Solar Energy最新文献_第2页

Seasonal thermal performance of geopolymer wall with phase change material and green façade: Southern Italy study 相变材料和绿色外墙地聚合物墙体的季节性热性能：意大利南部研究

IF 6 2区工程技术 Q2 ENERGY & FUELS

Solar Energy

Pub Date : 2026-03-15 Epub Date: 2026-01-27 DOI: 10.1016/j.solener.2026.114372

Rosa Francesca De Masi , Valentino Festa , Antonio Gigante , Silvia Ruggiero , Francesca Villano

This study presents a comprehensive experimental assessment of a full-scale geopolymer wall system enhanced with phase change material (PCM) and a vertical green façade, tested under real-world climatic conditions in Southern Italy. The research focuses on the synergistic thermal behavior of this hybrid passive system across transitional and winter seasons, an area underexplored in current literature. A geopolymer-based panel was monitored in two configurations—standard and PCM-enhanced—on a rotating test cell equipped with high-resolution heat flux and temperature sensors. Additionally, the PCM-enhanced panel was coupled with a modular green façade system using evergreen vegetation. Over a five-month monitoring period (September–January), detailed measurements revealed that the integrated system effectively reduced thermal fluxes by up to 3 W/m² and surface temperature amplitudes by 12% during warmer months, while offering significant thermal inertia and buffering capacity during colder periods—even when the PCM remained inactive. Violin plots and cumulative energy analyses demonstrate that PCM integration reduced heat release into the indoor environment by 16% and enhanced overall energy moderation. The green façade further improved microclimatic conditions by delaying thermal peaks and mitigating surface temperature extremes. A complementary simulation analysis further quantifies the annual energy implications of each façade configuration, extending the experimental evidence. This study contributes rare empirical data supporting the co-deployment of PCMs and green envelopes as a viable, passive, multi-seasonal strategy for energy-efficient building envelopes.

本研究对相变材料（PCM）和垂直绿色外墙增强的全尺寸地聚合物墙体系统进行了全面的实验评估，并在意大利南部的真实气候条件下进行了测试。该研究的重点是这种混合被动系统在过渡季节和冬季的协同热行为，这是目前文献中未充分探索的领域。在配备高分辨率热流通量和温度传感器的旋转测试单元上，对基于地聚合物的面板进行了两种配置（标准配置和pcm增强配置）的监测。此外，pcm增强面板与使用常绿植被的模块化绿色遮阳系统相结合。在为期5个月的监测期间（9月至1月），详细的测量结果显示，在较温暖的月份，集成系统有效地减少了高达3 W/m2的热通量和12%的地表温度幅值，同时在较冷的时期提供了显著的热惯性和缓冲能力，即使在PCM处于不活动状态时也是如此。小提琴图和累积能量分析表明，PCM集成减少了16%的热量释放到室内环境，并增强了整体能量调节。绿色farade通过延迟热峰值和减轻地表极端温度进一步改善了小气候条件。补充的模拟分析进一步量化了每个farade配置的年度能量影响，扩展了实验证据。本研究提供了罕见的经验数据，支持pcm和绿色围护结构的共同部署是一种可行的、被动的、多季节的节能建筑围护结构策略。

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引用次数: 0

Integrating solar driven solutions for food processing and urban environment: : Economic and thermal evaluation of radiofrequency assisted pasteurization and reflective coating technologies for Cooling and Heat Island Mitigation 将太阳能驱动的解决方案整合到食品加工和城市环境中；*对用于冷却和缓解热岛的射频辅助巴氏灭菌和反射涂层技术进行经济和热评估

IF 6 2区工程技术 Q2 ENERGY & FUELS

Solar Energy

Pub Date : 2026-03-15 Epub Date: 2026-01-30 DOI: 10.1016/j.solener.2026.114317

Yan Jiang , RuiXia Zhang , Yong Hao

This study was aimed at establishing the effectiveness of solar thermal energy, conventional pasteurization techniques, and radiofrequency (RF) pasteurization in the processing of salmeterol, a thick vegetable homogenate in a sustainable and energy-saving process. It was a pilot-scale pasteurization model that was conducted at IRTA premises in China’s agri-food sector, Shandong, China, in 2022. The aim of this study was to compare solar-assisted pasteurization with a conventional system that will utilize an electric steam boiler, and to determine seasonal energy consumption and the percentage of solar achieved during the process. Results established that the energy consumption by the two technologies was reduced by a large margin upon the incorporation of the solar thermal, especially during the summers when the percentage of solar was up to 90. This works to the advantage of Salmeterol which is a seasonal fruit because it is during the summer months that it is produced most. Radiofrequency pasteurization was not restricted by low solar irradiance because it was compatible with renewable energy sources and volumetric heating; thus, when solar levels were low, solar percentages remained high, and the overall energy and thermal efficiency were high. The results of this research reveal that solar-RF hybrid systems are highly promising in reducing the carbon footprint of food processing and achieving higher energy savings. The approach offers a better environmental friendly and resource efficient thermal treatment process on agri-food products especially on those that are sensitive to heat or even on those that are seasonal.

本研究旨在确定太阳能热能、传统巴氏灭菌技术和射频（RF）巴氏灭菌在沙美特罗（一种浓稠的蔬菜匀浆）加工过程中的可持续和节能效果。这是一个中试规模的巴氏杀菌模型，于2022年在中国山东农业食品部门的IRTA场所进行。本研究的目的是比较太阳能辅助巴氏灭菌与利用电蒸汽锅炉的传统系统，并确定季节性能源消耗和在此过程中实现的太阳能百分比。结果表明，两种技术的能源消耗在太阳能热的结合后大大减少，特别是在夏季，当太阳能的百分比高达90%时。沙美特罗是一种季节性水果，因为它在夏季生产最多。射频巴氏灭菌不受低太阳辐照度的限制，因为它与可再生能源和体积加热兼容；因此，当太阳能水平低时，太阳能百分比仍然很高，整体能源和热效率也很高。这项研究的结果表明，太阳能-射频混合系统在减少食品加工的碳足迹和实现更高的能源节约方面非常有前途。该方法为农产品提供了一种更好的环境友好型和资源高效的热处理工艺，特别是对那些对热敏感的农产品，甚至是季节性的农产品。

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引用次数: 0

Saharan dust and cirrus clouds: Dominating indirect impact of dust events on photovoltaic energy generation in Hungar y (2019–2024) 撒哈拉沙尘和卷云：沙尘事件对匈牙利光伏发电的主要间接影响（2019-2024）

IF 6 2区工程技术 Q2 ENERGY & FUELS

Solar Energy

Pub Date : 2026-03-15 Epub Date: 2026-01-28 DOI: 10.1016/j.solener.2026.114385

György Varga , Fruzsina Gresina , András Gelencsér , Adrienn Csávics , Ágnes Rostási

Saharan dust outbreaks increasingly affect Europe, yet their full impact on photovoltaic (PV) performance remains insufficiently represented in models. We investigate Saharan dust events over Hungary, a country with the highest share of PV-based electricity generation (2024: 25%). Using 2019–2024 PV production for Hungary, combined with MERRA-2, MODIS and CAMS datasets, we show that the dominant losses arise not from the direct radiative attenuation of dust, but from dust-induced enhancement of cirrus clouds, which substantially increases atmospheric extinction.

Across the study period, PV performance ratio during high-dust and high-cirrus conditions fell to 46%, compared to > 75% on low-dust days. Cirrus reflectance increased by 55%, and cirrus coverage by 60–85% during high-dust episodes, highlighting a robust aerosol-cloud interaction (ACI) signal.

Seasonal analyses reveal that these indirect impacts peak in the transitional seasons (spring and autumn), when thermodynamic conditions favour heterogeneous ice nucleation. In these seasons, PV performance ratio exhibits a clear sensitivity to dust load (R²≈0.94–0.96), and cirrus optical thickening is most pronounced. Bootstrap-based mediation analysis also demonstrates that the dominant impact of dust on performance operates indirectly through dust-induced cirrus enhancement rather than through direct aerosol attenuation alone.

This study provides the first quantitative separation of direct dust effects and cirrus-mediated indirect pathways in national-scale photovoltaic performance, revealing that ACI dominate PV losses during dust intrusions. By moving beyond correlation-based analyses, it introduces a transferable, statistically robust framework for diagnosing dust impacts on solar energy systems under real-world operating conditions.

撒哈拉沙尘疫情日益影响欧洲，但其对光伏（PV）性能的全面影响在模型中仍未充分体现。我们调查了匈牙利的撒哈拉沙尘事件，匈牙利是一个光伏发电份额最高的国家（2024年：25%）。利用匈牙利2019-2024年的光伏产量，结合MERRA-2、MODIS和CAMS数据集，我们发现主要的损失不是来自尘埃的直接辐射衰减，而是来自尘埃引起的卷云增强，这大大增加了大气消光。在整个研究期间，高沙尘和高卷云条件下的PV性能比下降到46%，而低沙尘条件下的PV性能比为75%。在高沙尘期，卷云反射率增加了55%，卷云覆盖率增加了60-85%，突出了一个强大的气溶胶-云相互作用（ACI）信号。季节分析表明，这些间接影响在过渡季节（春季和秋季）达到峰值，此时热力学条件有利于非均质冰核。在这些季节，PV性能比对粉尘负荷表现出明显的敏感性（R2≈0.94-0.96），卷云光学增厚最为明显。基于bootstrap的中介分析还表明，粉尘对性能的主要影响间接地通过粉尘引起的卷云增强而不是直接的气溶胶衰减来实现。该研究首次定量分离了国家尺度光伏性能中的直接粉尘效应和卷云介导的间接途径，揭示了ACI在粉尘入侵期间主导光伏损失。通过超越基于相关性的分析，它引入了一个可转移的、统计上可靠的框架，用于诊断在实际操作条件下对太阳能系统的尘埃影响。

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引用次数: 0

Improving the effectiveness of photovoltaic thermal systems with nanofluids and NePCM in tropical climates 利用纳米流体和NePCM提高热带气候下光伏热系统的有效性

IF 6 2区工程技术 Q2 ENERGY & FUELS

Solar Energy

Pub Date : 2026-03-15 Epub Date: 2026-01-18 DOI: 10.1016/j.solener.2026.114337

Singgih Dwi Prasetyo

This manuscript examines advancements in photovoltaic/thermal (PV/T) systems enhanced with nanofluids and phase change materials (PCMs), with a focus on identifying research gaps and promoting commercial viability. A systematic literature review synthesizes findings from 50 empirical studies, highlighting substantial thermal and electrical improvements associated with the integration of these technologies in diverse operational contexts, particularly in tropical environments. The analysis reveals that thermal efficiency gains range from 5% in minimally optimized configurations to 72% in systems utilizing advanced hybrid nanofluids and conductivity-enhanced NePCM. Electrical efficiency improvements consistently fall between 5% and 12%, primarily attributed to reduced panel temperatures and enhanced heat removal. Notably, tropical regions are shown to achieve average thermal gains exceeding 25%, with peak values surpassing 60% under high-irradiation conditions. The study highlights critical future research directions, including the standardization of nanoparticle synthesis protocols, the expansion of long-term stability assessments, and the optimization of nanofluid formulations that balance heat transfer with pumping power. The integration of hybrid renewable systems and circular economy models for nanoparticle production also warrants further exploration. By outlining these findings and recommendations, this manuscript informs ongoing research efforts and establishes a comprehensive agenda for future investigations aimed at maximizing the performance and sustainability of PV/T systems. Ultimately, the insights provided in this review help bridge the gap between laboratory advancements and real-world applications, thereby fostering the adoption of innovative thermal-enhancement technologies in the energy sector.

本文研究了纳米流体和相变材料（PCMs）增强的光伏/热（PV/T）系统的进展，重点是确定研究差距和促进商业可行性。一项系统的文献综述综合了50项实证研究的结果，强调了在不同的操作环境中，特别是在热带环境中，与这些技术的整合相关的大量热电改进。分析表明，热效率的提高范围从最低优化配置的5%到使用先进的混合纳米流体和电导率增强的NePCM系统的72%。电气效率的提高一直在5%到12%之间，这主要归功于面板温度的降低和散热的增强。值得注意的是，热带地区的平均热增益超过25%，在高辐照条件下的峰值超过60%。该研究强调了未来关键的研究方向，包括纳米颗粒合成方案的标准化，长期稳定性评估的扩展，以及平衡传热和泵送功率的纳米流体配方的优化。纳米颗粒生产的混合可再生系统和循环经济模型的整合也值得进一步探索。通过概述这些发现和建议，本文为正在进行的研究工作提供了信息，并为未来的研究建立了一个全面的议程，旨在最大限度地提高光伏/T系统的性能和可持续性。最终，本综述提供的见解有助于弥合实验室进展与实际应用之间的差距，从而促进能源部门采用创新的热增强技术。

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引用次数: 0

Machine learning guided optimization of lead free K2TlSbCl6/Na2ScAuI6 dual absorber double perovskite solar cells 机器学习指导下无铅K2TlSbCl6/Na2ScAuI6双吸收体双钙钛矿太阳能电池的优化

IF 6 2区工程技术 Q2 ENERGY & FUELS

Solar Energy

Pub Date : 2026-03-15 Epub Date: 2026-01-19 DOI: 10.1016/j.solener.2026.114348

Asadul Islam Shimul , Bipul Chandra Biswas , Laboni Rani Keya , Sahjahan Islam , Md.Azizur Rahman , Karim KRIAA , Mohamed Benghanem , Noureddine Elboughdiri

This research examines a dual absorber double perovskite layer (DADPL) arrangement that integrates K₂TlSbCl₆ and Na₂ScAuI₆, evaluated by SCAPS-1D simulations. The proposed device incorporates eight electron transport layers (ETLs) and eight hole transport layers (HTLs), which were systematically examined across four device topologies, resulting in a total of 88 unique layer combinations. Findings demonstrate that the integration of HTL significantly improves charge extraction and diminishes recombination losses, resulting in superior photovoltaic performance relative to single-layer perovskite solar cells (PSCs). The impacts of layer thickness, doping concentrations, and defect densities were thoroughly analyzed. The optimized DADPL attained a peak PCE of 27.26 %, whilst single absorbers achieved 23.16 % and 22.58 % respectively. The Al/FTO/WS₂/(K₂TlSbCl₆/Na₂ScAuI₆)/V₂O₅/Ni configuration achieved the highest efficiency of 30.16 %, with a V_OC of 0.99 V, a J_SC of 34.59 mA/cm², and an FF of 87.85 %. A machine learning (ML)-based prediction framework was developed to accurately estimate and anticipate photovoltaic performance, complementing simulation results. Five regression methods were trained and validated using SCAPS-1D datasets. The Random Forest Regressor exhibited superior predictive performance, attaining R² > 0.97 across all evaluation metrics with negligible error margins. Feature importance and SHAP analysis indicated that absorber doping density is the primary factor influencing device efficiency. Additional diagnostic plots and ROC-AUC evaluations validated the model’s little bias, strong classification capability, and excellent reliability across various performance levels. These findings illustrate the capability of combining DADPL perovskites with ML-assisted modeling for the swift enhancement of high-efficiency, economical PSCs.

本研究考察了一种双吸收剂双钙钛矿层（DADPL）布置，该布置集成了K2TlSbCl6和Na2ScAuI6，并通过SCAPS-1D模拟进行了评估。该器件包含8个电子传输层（ETLs）和8个空穴传输层（HTLs），在4种器件拓扑中对其进行了系统检查，总共得到88个独特的层组合。研究结果表明，HTL的集成显著改善了电荷提取，减少了复合损失，从而使光伏性能优于单层钙钛矿太阳能电池（PSCs）。深入分析了层厚、掺杂浓度和缺陷密度的影响。优化后的双吸光体峰值PCE为27.26%，单吸光体峰值PCE分别为23.16%和22.58%。Al/FTO/WS2/(K2TlSbCl6/Na2ScAuI6)/V2O5/Ni结构的效率最高，为30.16%，VOC为0.99 V， JSC为34.59 mA/cm2， FF为87.85%。开发了基于机器学习（ML）的预测框架，以准确估计和预测光伏性能，补充模拟结果。使用SCAPS-1D数据集对五种回归方法进行了训练和验证。随机森林回归器表现出优越的预测性能，在所有评估指标中达到R2 >； 0.97，误差范围可以忽略不计。特征重要性和SHAP分析表明，吸收剂掺杂密度是影响器件效率的主要因素。附加的诊断图和ROC-AUC评估验证了该模型的小偏差、强分类能力和跨各种性能水平的出色可靠性。这些发现说明了将DADPL钙钛矿与ml辅助建模相结合的能力，可以快速增强高效，经济的psc。

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引用次数: 0

Grain boundary orientation-dependent performance of polycrystalline thin-film solar cells 多晶薄膜太阳能电池的晶界取向依赖性性能

IF 6 2区工程技术 Q2 ENERGY & FUELS

Solar Energy

Pub Date : 2026-03-15 Epub Date: 2026-01-21 DOI: 10.1016/j.solener.2026.114350

Muzaffar Imam , Mukul Kumar Das

Carrier recombination at grain boundaries (GBs) has been a crucial factor in determining the performance of polycrystalline material-based thin-film solar cells. In this work, a theoretical model has been developed to investigate the impact of GB orientation on the performance of polycrystalline thin-film solar cells. The developed model considers a Gaussian-distribution of donor- and acceptor-like GB-traps. Moreover, the model considers a single GB interface oriented in the clockwise direction between 0° and 90° within the cell. 2-dimensional TCAD numerical simulations were also conducted to validate the theoretical results. The model has been calibrated against available reported data. The results show that GBs oriented normal to the directed motion of carrier flow has significant impact on the performance of the device. Furthermore, a marked reduction in efficiency is observed when the GB orientation approaches 90° and the trap density reaches 10¹³ cm⁻². These findings suggest that controlling GB orientation through growth kinetics could offer a viable pathway to enhance polycrystalline solar cell efficiency.

晶界载流子复合是决定多晶材料基薄膜太阳能电池性能的关键因素。在这项工作中，建立了一个理论模型来研究GB取向对多晶薄膜太阳能电池性能的影响。所开发的模型考虑了类似供体和受体的gb陷阱的高斯分布。此外，该模型考虑了单元内沿顺时针方向在0°到90°之间的单个GB接口。通过二维TCAD数值模拟验证了理论结果。该模型已根据现有的报告数据进行了校准。结果表明，与载流子方向运动方向正相关的gb对器件的性能有显著影响。此外，当GB取向接近90°，陷阱密度达到1013 cm−2时，效率显著降低。这些发现表明，通过生长动力学控制GB取向可以为提高多晶太阳能电池效率提供一条可行的途径。

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引用次数: 0

A lightweight autoencoder for photovoltaic module defect segmentation from electroluminescence images 一种轻型自编码器用于光电组件缺陷的电致发光图像分割

IF 6 2区工程技术 Q2 ENERGY & FUELS

Solar Energy

Pub Date : 2026-03-15 Epub Date: 2026-01-21 DOI: 10.1016/j.solener.2026.114362

Mohamed Elbahri , Nasreddine Taleb , Mahmoud Fahsi , Fatima Taousser , Sid Ahmed El Mehdi Ardjoun

The automatic diagnosis of photovoltaic (PV) cells during production or deployment in fields is crucial. In this work, we propose an autoencoder to segment electroluminescence images for enhancing the visibility of defects. The proposed autoencoder replaces the more complex architectures previously used in this domain, such as U-Net or PSP-Net. Our model is relatively shallow and lightweight, making it favourable for deployment in edge devices within IoT diagnostic systems. In addition, we have introduced in this work a custom objective function designed to reduce false positive and false negative detection instead of the traditional loss function used in the segmentation process. The training of the proposed autoencoder is based on a data batching strategy to avoid overfitting and other training issues. We conducted experiments and compared the results with state-of-the-art methods, evaluating the model’s efficiency in terms of parameter count, speed, and accuracy. The proposed autoencoder achieves an Intersection over Union (IoU) of 92 % for defect segmentation while ensuring fast inference (0.076 s per frame, compared to 1.67 s for U-Net). In addition, the model attains 96.6 % accuracy for binary classification of cell state.

光伏电池在生产或野外部署过程中的自动诊断至关重要。在这项工作中，我们提出了一种自动编码器来分割电致发光图像，以提高缺陷的可见性。提出的自动编码器取代了以前在该领域使用的更复杂的架构，如U-Net或PSP-Net。我们的模型相对较浅且重量轻，有利于在物联网诊断系统中的边缘设备中部署。此外，我们在这项工作中引入了一个定制的目标函数，旨在减少假阳性和假阴性检测，而不是传统的分割过程中使用的损失函数。所提出的自动编码器的训练基于数据批处理策略，以避免过拟合和其他训练问题。我们进行了实验，并将结果与最先进的方法进行了比较，从参数计数、速度和准确性方面评估了模型的效率。所提出的自编码器在保证快速推理（每帧0.076秒，而U-Net为1.67秒）的同时，实现了92%的缺陷分割交叉点（IoU）。此外，该模型对细胞状态的二元分类准确率达到96.6%。

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引用次数: 0

Investigation of various smart switchable double glazing systems for reducing air conditioning expenses and carbon emissions in smart and sustainable buildings 各种智能可切换双层玻璃系统的研究，以减少智能和可持续建筑中的空调费用和碳排放

IF 6 2区工程技术 Q2 ENERGY & FUELS

Solar Energy

Pub Date : 2026-03-15 Epub Date: 2026-01-30 DOI: 10.1016/j.solener.2026.114374

K.Joel Ashirvadam, Saboor Shaik

Energy-efficient measures have gained significant momentum in recent times. Buildings are adapting to this trend by controlling artificial methods of cooling, heating, and lighting. Double-pane glass effectively manages solar radiation in buildings by reducing the cooling loads. Smart switchable PDLC glazing, which adjusts from transparent to translucent based on an electric field, also aids in solar regulation. The spectral properties in the UV-VIS-NIR region were measured for seven samples: clear glass, double-pane glass with 4mm, 8mm, and 12mm air gaps, and PDLC with double-pane glass at the same gaps. The study focused on Lucknow (hot-arid) and Jamshedpur (hot-humid). A real time building model is considered to investigate the heat gains, air conditioning cost reductions, carbon emissions and payback periods. The double pane glazing which is attached by PDLC showed reliable results. For daylighting analysis, the simulation tool Design builder is used. The heat gain is reduced about 31.14% when clear glazing is replaced with double glazing with PDLC-ON and air gap of 12mm.The operating cost of the same is 4.35 $/m² for Lucknow and 5.84 $/m² for Jamshedpur which is very economical. In addition to that, it also mitigates carbon emissions by 21.9 tCO₂/year and 15.41 tCO₂/year, respectively. For this glazing in Lucknow climatic condition, the payback period is less than 14 years. For both climates it provides adequate daylight in all orientations also offering the color rendering index of over 90 which indicates high quality light. The results are useful for designing smart and energy conscious buildings.

近年来，节能措施取得了显著进展。建筑通过控制人工制冷、供暖和照明的方法来适应这一趋势。双层玻璃通过减少冷却负荷有效地控制建筑物内的太阳辐射。智能可切换PDLC玻璃，根据电场从透明到半透明调节，也有助于太阳能调节。对透明玻璃、具有4mm、8mm和12mm气隙的双层玻璃和具有相同气隙的双层玻璃七种样品的紫外-可见-近红外光谱特性进行了测量。这项研究的重点是勒克瑙（炎热干旱）和贾姆谢德布尔（炎热潮湿）。一个实时的建筑模型被认为是调查热量增益，空调成本降低，碳排放和投资回收期。采用PDLC贴附双层玻璃，效果可靠。对于采光分析，使用仿真工具Design builder。采用PDLC-ON双层玻璃，气隙为12mm，取代纯玻璃，热增益降低约31.14%。同样的运营成本，勒克瑙是4.35美元/平方米，贾姆谢德布尔是5.84美元/平方米，非常经济。除此之外，它还减少了21.9 tCO2/年和15.41 tCO2/年的碳排放。在勒克瑙的气候条件下，这种玻璃的投资回收期不到14年。对于这两种气候，它在所有方向都提供充足的日光，并提供超过90的显色指数，这表明高质量的光。研究结果对设计智能节能建筑很有帮助。

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引用次数: 0

S-scheme designed CoTiO3/rGO/g-C3N4 nanohybrid for photodegradation of organic pollutants and transformation of 2,4,6-trichlorophenol s方案设计的CoTiO3/rGO/g-C3N4纳米杂化物用于有机污染物的光降解和2,4,6-三氯苯酚的转化

IF 6 2区工程技术 Q2 ENERGY & FUELS

Solar Energy

Pub Date : 2026-03-15 Epub Date: 2026-01-25 DOI: 10.1016/j.solener.2026.114367

Mohammad Saud Athar, Arshi Abad, Mohammad Muneer

Organic pollutants owing to their high toxicity and resistance present a significant environmental challenge. To mitigate this issue, a visible-light-responsive perovskite-based metal free graphitic carbon nitride functionalized with rGO was hydrothermally developed. The developed materials were characterized by standard analytical techniques such as UV–Vis DRS, XRD, FTIR, SEM, FESEM, HRTEM, BET, XPS, and EDX-mapping. The characterization results demonstrate the successful construction of nanohybrid photocatalysts with well-integrated interfaces among pristine materials, which results in significantly improved photocatalytic activity. The photocatalytic degradation study was evaluated using all the synthesized materials, whereas, 10 wt% CoTiO₃/rGO/g-C₃N₄ (10CGG) nanohybridrevealed superior photocatalytic performance, achieving 95% degradation ofrhodamine B in 30 min and 93.5% degradation of 4-nitrophenol in 125 min under visible light.Additionally, the photocatalytic efficiency of 10CGG nanohybrid was further confirmed by phototransformation of 2,4,6-trichlorophenol and mineralization study. The mechanistic insights were supported by radical quenching experiments, terephthalic acid versus NaOH and NBT tests. The enhanced photocatalytic performance is attributed to more efficient separation of photoinduced electron (e⁻) − hole (h⁺) pairs. Consequently, a direct S-scheme mechanism was proposed to explain efficient charge carrier separation for improved photocatalytic outcomes, which was further supported by PL, EIS, Mott-Schottky and ESR results.

有机污染物由于其高毒性和抗性，对环境提出了重大挑战。为了解决这个问题，研究人员通过水热法开发了一种可见光响应的钙钛矿基无金属石墨化碳氮化物。采用UV-Vis DRS、XRD、FTIR、SEM、FESEM、HRTEM、BET、XPS、EDX-mapping等标准分析技术对材料进行了表征。表征结果表明，纳米杂化光催化剂的成功构建具有良好集成的原始材料界面，从而显著提高了光催化活性。结果表明，10 wt% CoTiO3/rGO/g-C3N4 （10CGG）纳米杂糅物表现出优异的光催化性能，在可见光下30 min降解罗丹明B 95%， 125 min降解4-硝基苯酚93.5%。此外，通过2,4,6-三氯苯酚的光转化和矿化研究，进一步证实了10CGG纳米杂化物的光催化效率。自由基猝灭实验、对苯二甲酸对氢氧化钠和NBT实验支持了机理的认识。光催化性能的增强是由于光诱导电子(e−)-空穴（h+）对更有效的分离。因此，我们提出了一个直接的S-scheme机制来解释有效的载流子分离对改善光催化效果的影响，并得到了PL、EIS、Mott-Schottky和ESR结果的进一步支持。

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引用次数: 0

Bionic marine seaweed evaporator for effective seawater desalination 仿生海藻蒸发器，有效淡化海水

IF 6 2区工程技术 Q2 ENERGY & FUELS

Solar Energy

Pub Date : 2026-03-15 Epub Date: 2026-01-12 DOI: 10.1016/j.solener.2026.114327

Xinzhe Liu , Ting Chen , Tiezhi Wang , Jinliang Xu , Ying He , Guohua Liu

This study proposes the “marine seeding” concept and develops an interfacial evaporator based on it for efficient seawater desalination. polyvinyl alcohol and graphene oxide are uniformly coated on cotton fibers to harden them, and self-floating is achieved with the help of polystyrene foam. The porous interconnected structure of the PVA/GO/cotton composite can shorten the water molecule transport path and achieve rapid water transport to meet the water supply demand during the evaporation process. And the gradient heat distribution formed on the evaporator surface due to photothermal conversion will drive the natural convection of brine, accelerate the diffusion of salt ions into the bulk solution, and effectively avoid surface salt accumulation. The marine seeding evaporator can reach a seawater evaporation rate as high as 2.451 kg·m⁻²·h⁻¹ and shows no salt crystallization during 6 days long-term test. Moreover, the reduction in the evaporation enthalpy of water in the evaporator and the changes in water state have been confirmed through dark evaporation tests, Differential Scanning Calorimetry, and Raman spectroscopy. And the freshwater collection device assembled with the evaporator has a daily freshwater collection of up to 10.18 L·m⁻². This research paves the way for a more efficient and sustainable seawater desalination solution.

本研究提出了“海洋播种”的概念，并在此基础上开发了一种高效海水淡化的界面蒸发器。将聚乙烯醇和氧化石墨烯均匀涂在棉纤维上使其硬化，并借助聚苯乙烯泡沫实现自浮。PVA/GO/棉复合材料的多孔互联结构可以缩短水分子的运输路径，实现快速的输水，满足蒸发过程中的供水需求。而蒸发器表面因光热转换而形成的梯度热分布，将驱动卤水的自然对流，加速盐离子向体溶液的扩散，有效避免表面盐的积聚。在6 d的长期试验中，海水蒸发速率高达2.451 kg·m−2·h−1，无盐结晶现象。此外，通过暗蒸发试验、差示扫描量热法和拉曼光谱法证实了蒸发器中水的蒸发焓降低和水态的变化。与蒸发器组装的淡水收集装置，每日淡水收集量可达10.18 L·m−2。这项研究为更有效和可持续的海水淡化解决方案铺平了道路。

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引用次数: 0