Article
Chemistry, Multidisciplinary
Mingna Liao, Debashree Banerjee, Tomas Hallberg, Christina akerlind, Md Mehebub Alam, Qilun Zhang, Hans Kariis, Dan Zhao, Magnus P. Jonsson
Summary: Cellulose is a sustainable material with high thermal emissivity and low solar absorptance. By introducing additives such as carbon black, solar absorptance can be achieved. However, the high thermal emissivity of such materials leads to counteractive radiative cooling when exposed to the sky. To address this issue, a cellulose-carbon black composite with low mid-infrared (MIR) emissivity and a transparent IR-reflecting indium tin oxide coating is used. This composite material provides opposite optical properties compared to solar-reflecting electrospun cellulose, resulting in spontaneous temperature differences when exposed to the sky.
Article
Thermodynamics
Yupu Yu, Fengwu Bai, Zhifeng Wang
Summary: The interest in high-temperature solar receivers is increasing in industrial fields. Solid particles are promising heat transfer fluids for high-temperature receivers due to their advantages of direct absorption, low cost, and high allowable temperature. This paper proposed a mathematical model to describe the heat transfer behaviors of a gravity-driven solid particle solar receiver with a quartz tube cover. On-sun tests were conducted to verify the model. The analysis results could be used for the optimal design and operation of gravity-driven solid particle solar receivers.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Chemistry, Physical
Gunwoo Kim, Kyuin Park, Kyungjun Hwang, Chulmin Choi, Zengwei Zheng, Roland Seydel, Aurel Coza, Sungho Jin
Summary: In this study, a solar-adaptive-textile (SAT) has been developed, which effectively reduces solar irradiance and thermal radiation to achieve a cooling effect under sunlight. The inclusion of a nanoscale sputtered thin aluminum metal film in the textile layer facing the skin has shown outstanding performance in blocking solar energy and maintaining textile properties.
Article
Energy & Fuels
Olga Kasian, Tong Li, Andrea M. Mingers, Kevin Schweinar, Alan Savan, Alfred Ludwig, Karl Mayrhofer
Summary: Iridium is considered the best catalyst material for the oxygen evolution reaction (OER) in acidic media, but its scarcity has led to strategies for efficient utilization through mixtures with more stable metals or metal oxides. The study demonstrates that Ir-Ti mixtures can be promising OER catalysts with both high activity and high stability.
JOURNAL OF PHYSICS-ENERGY
(2021)
Article
Physics, Applied
Mingrao Liu, Shuai Zhang, Fuxi Li, Canying Zhang, Haitao Zhu, Daxiong Wu
Summary: Passive daytime radiative cooling (PDRC) is an environmentally friendly cooling strategy that requires no electricity or fossil energy. In this study, a low-cost PDRC coating was prepared using a simple process, consisting of polymethylmethacrylate and CaSiO3. The coating exhibited high solar reflectivity, atmospheric window emissivity, and achieved effective radiative cooling performance. The experimental results suggest potential applications of this coating in dew condensation and retarding ice melting.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2022)
Article
Energy & Fuels
Xianze Ao, Jie Liu, Mingke Hu, Bin Zhao, Gang Pei
Summary: The study demonstrates the use of a rigid spectral selective cover for solar heating and radiative sky cooling systems, which has high transmissivity and vacuum effect, significantly enhancing system performance.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2021)
Article
Chemistry, Physical
Hak-Joo Lee, Deok-Hye Park, Woo-Jun Lee, Sang-Beom Han, Min-Ha Kim, Jeong-Hyeon Byeon, Kyung-Won Park
Summary: The Ir-doped NiCo2O4 catalyst shows enhanced electrocatalytic activity for the oxygen evolution reaction due to the oxygen vacancies formed by Ir doping, leading to improved electrical conductivity and tunable adsorption energies. Compared to IrO2, the doped catalyst exhibits better OER performance and stability in both individual and overall water splitting tests.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Engineering, Chemical
Andreja Zgajnar Gotvajn, Ula Rozman, Teja Antoncic, Teja Urbanc, Martin Vrabel, Jan Derco
Summary: The study aimed to determine the oxidation potential of selected antibiotics to reduce environmental emissions. Indirect ozonation and photocatalytic oxidation with Fe2+ and UV radiation were found to be the most efficient methods, with high mineralization rates. Amoxicillin was the only drug completely mineralized, suggesting potential for improving efficiency in antibiotic removal processes using ozonation with Fe2+ and UV radiation.
Article
Chemistry, Physical
Meng Wang, Zhi Wan, Xinying Meng, Zhihao Li, Xiaogang Ding, Pan Li, Can Li, Jian-Gan Wang, Zhen Li
Summary: This study demonstrates a new approach for cost-effective solar water splitting system towards green hydrogen production. By elaborately implanting polyoxometalate, an efficient oxygen evolution reaction catalyst is created, which is successfully integrated into a solar cell-electrode system, achieving high solar energy utilization efficiency.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Nanoscience & Nanotechnology
Jiali Wang, Hsiao-Chien Chen, Hui-Ying Tan, Cher Ming Tan, Yanping Zhu, Hao Ming Chen
Summary: This article focuses on the variations in surface chemical state under working conditions in CO2RR and systematically summarizes the regulation of chemical state and its relation to product profile in catalysts with varying metal centers. The debates over the effects of chemical state on product profile during CO2RR are also discussed. The study highlights the importance of surface chemical state sensitivity to product profile during CO2RR.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Shusaku Karasawa, Kamal Prasad Sharma, Takahiro Saida, Shigeya Naritsuka, Yuichi Haruyama, Toru Asaka, Takahiro Maruyama
Summary: In situ XAFS analysis revealed that the chemical states of catalyst particles during SWCNT growth are closely related to the metal properties.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Chemistry, Applied
Lijie Pei, Jianxin Cao, Fei Liu, Anjie Yang, Mengqin Yao, Tianxiang Zhao, Xiaodan Wang, Sibudjing Kawi
Summary: The catalytic properties of bifunctional ZSM-5@t-ZrO2 catalyst for methanol thiolation were studied. It was found that the acid sites of ZSM-5 and the base sites of t-ZrO2 played important roles in the adsorption and dissociation of methanol and H2S molecules, respectively. Pre-sulfurization improved the initial activity of methanol thiolation, and the special structure of ZSM-5@t-ZrO2 reduced the formation rate of carbon and sulfur deposits.
Article
Chemistry, Physical
Ali Hussain Motagamwala, James A. Dumesic
Summary: The paper examines the reaction kinetics of steady-state catalytic reactions on heterogeneous catalysts, utilizing a generalized two-step reaction scheme to derive expressions for surface coverages and validate their applicability through case studies.
JOURNAL OF CATALYSIS
(2021)
Article
Materials Science, Multidisciplinary
Zedong Zhang, Min Zhou, Yuanjun Chen, Shoujie Liu, Haifeng Wang, Jian Zhang, Shufang Ji, Dingsheng Wang, Yadong Li
Summary: The study introduces a simple and practical method to synthesize a monolithic single-atom catalyst supported on nitrogen-doped carbon foams, showing excellent activity and selectivity in semi-hydrogenation reactions. The catalyst's great integrity and mechanical strength allow for easy separation and recycling, demonstrating high reusability and stability. The discovery of isolated site effect offers a new pathway for designing highly selective catalysts, while the development of monolithic single-atom catalysts opens up new opportunities for practical applications.
SCIENCE CHINA-MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Seungbeom Park, Woomin Park, Kangjoo Lee, Sun-Joon Min, Kwang-Suk Jang
Summary: A network structure of solar-thermal materials has been developed for zero energy heating of a solvent under 1 sun illumination, which successfully accelerated catalytic reactions. The network structure material exhibited excellent sunlight absorption properties, reduced heat loss, increased reaction solution temperature, and demonstrated easy and low-energy-consuming multicycle use.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Thermodynamics
Yan Dong, Fuqiang Wang, Yaqi Zhang, Xuhang Shi, Aoyu Zhang, Yong Shuai
Summary: The emergence of bionics in engineering technology has provided new ideas for innovation, particularly in the fields of energy storage and heat transfer enhancement. By utilizing biomimetic oval structures for heat storage units with phase change material capsules, improvements in flow characteristics and thermal performance have been achieved. Experimental and numerical analyses indicate that oval shaped capsules have shorter melting times and higher Nusselt numbers compared to sphere capsules.
Article
Thermodynamics
Hao Zhang, Yong Shuai, Bachirou Guene Lougou, Boshu Jiang, Dazhi Yang, Qinghui Pan, Fuqiang Wang, Xing Huang
Summary: This study establishes a numerical model to find the optimal structural parameters of ceramic foam for solar thermochemistry applications. The results show that using ceramic foam with high porosity and large cell size can attain the best thermochemical characteristics.
Article
Chemistry, Physical
Xuhang Shi, Yimeng Xun, Yan Dong, Fuqiang Wang, Xinping Zhang, Ziming Cheng
Summary: This study proposes the idea of regulating the radiation field to match the solar thermochemical energy conversion on-demand, and introduces a biomimetic hierarchical porous structure as a solar thermochemical reactor to improve the conversion efficiency.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Thermodynamics
Wang Fuqiang, Zhang Xinping, Dong Yan, Yi Hongliang, Xuhang Shi, Li Yang, Cheng Ziming
Summary: Porous medium with high porosity and large specific surface area is widely used in various fields, especially in solar energy conversion and high-temperature applications where radiative transfer plays a dominant role. Further research is needed to address the criteria for judging the limits of independent scattering in porous medium and to develop accurate high-temperature radiative property measurement systems.
APPLIED THERMAL ENGINEERING
(2022)
Article
Thermodynamics
Zhang Aoyu, Wang Fuqiang, Cheng Ziming, Liang Huaxu, Shi Xuhang
Summary: This study investigates the effects of non-uniform particle size distribution and dependent scattering on the radiative transfer in dispersed particulate media, and proposes a method that combines these two effects. The authors develop a multiple sphere T-matrix (MSTM) method and incorporate measured non-uniform particle size distribution to accurately calculate the radiative properties of dispersed particulate media.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2022)
Article
Materials Science, Multidisciplinary
Xinping Zhang, Xiang Li, Fuqiang Wang, Weizhe Yuan, Ziming Cheng, Huaxu Liang, Yuying Yan
Summary: This study proposes the concept of utilizing biomimetic beetle cuticle structure for efficient radiative regulation and presents a low-cost biomimetic radiative cooling glass. The glass achieves multi-band spectral regulation, high transparency, esthetics, and energy conservation.
ADVANCED OPTICAL MATERIALS
(2022)
Article
Energy & Fuels
Xuhang Shi, Fuqiang Wang, Bachirou Guene Lougou, Hao Zhang, Xiudong Wei, Dong Li, Jie Xu
Summary: This research proposes the use of a biomimetic bone porous structure as a catalyst carrier to achieve flow and energy matching in a thermochemical reactor. Experimental results show that optimizing flow and energy matching can improve energy storage efficiency and methane conversion rate.
JOURNAL OF ENERGY STORAGE
(2022)
Article
Electrochemistry
Xutong Ren, Jianfeng Wang, Na Yang, Mengyu Shi, Fen Liu, Fuqiang Wang
Summary: This study aimed to achieve a clear understanding of the response characteristics of soft pack battery extrusion conditions under various situations, including the repeatability of extrusion tests, the impact of extrusion speed on battery thermal runaway, and the influence of SOC on battery response. Experimental results showed that different extrusion speeds and SOC levels have effects on the thermal runaway performance of the battery.
Article
Thermodynamics
Hao Zhang, Xiaomi Zhang, Dazhi Yang, Yong Shuai, Bachirou Guene Lougou, Qinghui Pan, Fuqiang Wang
Summary: This study compares the thermochemical reaction characteristics of six common ferrites and four metal dopants through thermogravimetric analysis. A modified oxygen carrier with low reaction temperature requirements and excellent reaction performance is found, achieving dual optimization in terms of thermal efficiency and chemical efficiency. A foam-structured material with SiC as support is prepared and experimentally tested, showing optimal reaction performance with the highest CO yield of 439 mu mol/g and a peak CO yield of 7.0 mL min-1 g-1 and CO2 conversion of 45.5% at a reduction temperature of only 1100 degrees C.
ENERGY CONVERSION AND MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Xuhang Shi, Jintao Song, Ziming Cheng, Huaxu Liang, Yan Dong, Fuqiang Wang, Wenjing Zhang
Summary: To improve the energy conversion efficiency of solar to fuel, this study proposes a method of regulating radiative intensity to match energy conversion demand in solar methane dry reforming. The design of solar spots and biomimetic leaf hierarchical porous structures is optimized, resulting in a better radiative intensity field matching. Experimental and numerical studies show that by using this method, the methane conversion rate and solar thermochemical energy storage efficiency can be increased by 4.6% and 6.1%, respectively, achieving ideal synergy between real temperature field distribution and theoretical temperature requirement.
Article
Nanoscience & Nanotechnology
Xinping Zhang, Ziming Cheng, Dongling Yang, Yan Dong, Xuhang Shi, Huaxu Liang, Fuqiang Wang, Han Han, Weifeng Meng, Yong Shuai, Yuying Yan
Summary: Passive daytime radiative cooling (PDRC) is a zero-energy cooling technology that aims to reduce global fossil energy consumption and has gained significant interest. However, balancing the pursuit of ultrahigh dual-band optical properties and compatibility with multiple functional requirements remains a major challenge for PDRC.
Article
Energy & Fuels
Yan Dong, Yanan Zou, Xiang Li, Fuqiang Wang, Ziming Cheng, Weifeng Meng, Lingling Chen, Yang Xiang, Tong Wang, Yuying Yan
Summary: The idea of introducing a masking layer to prepare a water-based double-layer PDRC coating with high optical performance and thin thickness is proposed in this study. The PDRC coating achieved high solar reflectance and atmospheric transparent spectrum window emittance, with only 40% of the thickness and 60% of the cost compared to existing water-based PDRC coating. The coating demonstrated efficient cooling performance in large-scale outdoor applications and energy savings in container rooftops, providing compelling evidence for its ability to mitigate carbon emissions and address global climate change.
Article
Thermodynamics
Xue Chen, Jinxin Lyu, Chuang Sun, Xinlin Xia, Fuqiang Wang
Summary: A pore-scale flow and heat transfer model is developed to investigate the thermal and hydrodynamic performance of a volumetric solar receiver under highly concentrated irradiation. Three-dimensional simulations are conducted based on the Weaire-Phelan structure modeling an open-cell ceramic foam absorber. The study predicts and compares the energy conversion characteristics of two ceramic materials (SiC and Al2O3). Various control approaches for the optical property of the solar absorber are introduced and analyzed. Results show that SiC absorber outperforms Al2O3 absorber and the optical property of the absorber front region significantly affects overall performance. Decreasing absorptivity and spectral selective design have positive impacts, with spectral selective improvement showing the highest effectiveness. Additionally, adding a porous fused silica as the front absorber layer effectively shifts the high-temperature area inward with a slight decrement in efficiency, and honeycomb structure exhibits advantages over foam silica.
Article
Chemistry, Multidisciplinary
Yan Dong, Weifeng Meng, Fuqiang Wang, Han Han, Huaxu Liang, Xiang Li, Yanan Zou, Chun Yang, Zenghui Xu, Yuying Yan, Ziming Cheng
Summary: This study combines temperature-adaptive solar absorption and passive daytime radiative cooling (PDRC) technology to achieve warm in winter and cool in summer. The temperature-adaptive radiative cooling coating (TARCC) with color variability is designed and fabricated, showing high solar reflectance and atmospheric transmission window emittance in summer, and heat absorption in winter. It has the potential to save energy and increase suitable human hours.
Article
Optics
Aoyu Zhang, Ziming Cheng, Fuqiang Wang, Weixin Xie, Huaxu Liang
Summary: This article investigates the spectral radiative transfer between particles in dispersed particulate medium, highlighting the importance of considering the effects of host medium absorption and dependent scattering. Using metal nanoparticles embedded in the absorption layer for thin-film solar cells as an example, the authors propose a method that combines the localized surface plasmon resonance effect, dependent scattering, and host medium absorption to accurately calculate the radiative properties. Compared to conventional methods, this approach significantly reduces the maximum relative error and average error between experimental and calculated data.
OPTICS COMMUNICATIONS
(2023)
