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学者姓名：韩昌报
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Abstract ：
Replacing the oxygen evolution reaction (OER) with the anodic formaldehyde oxidation reaction (FOR) is crucial for achieving low-voltage dual-electrode hydrogen evolution. However, existing FOR catalysts face challenges such as low activity, high transition state barriers, and unclear reaction mechanisms. In this study, a three-dimensional nano-composite Cu2O/Cu/Mn2O3 heterogeneous catalyst with enhanced hydrogen spillover effect was synthesized through hydrothermal and photosensitive oxidation treatment techniques. The catalyst consists of similar to 20 nm Cu2O/Cu and 30-70 nm Mn2O3 nanoparticles. The hydrogen spillover effect enhanced Cu2O/Cu/Mn2O3 (1:1) electrocatalyst demonstrated outstanding FOR performance, with an anode potential of only 0.128 V at a current density of 100 mA cm-2 , significantly lower than that of the Cu2O/Cu-CC catalyst (0.25 V) and the OER potential (1.726 V). Moreover, the Faraday efficiency of the Cu2O/Cu/Mn2O3 (1:1) electrocatalyst reached similar to 100%. The electrocatalyst's FOR performance remains stable over 50 h without decay, and its hydrogen evolution reaction (HER) performance surpasses that of Cu and MnOx electrocatalysts. Density functional theory (DFT) calculations suggested that the Cu2O/Cu/Mn2O3 catalyst significantly lowers the energy barriers for C-H bond breaking (0.48 eV) and H-H bond formation (-0.99 eV) by promoting the hydrogen spillover effect. This study provides theoretical support for designing efficient and stable low-energy dual-electrode hydrogen evolution catalysts and validates their potential through experiments. (c) 2025 Science Press and Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. and Science Press. All rights are reserved, including those for text and data mining, AI training, and similar technologies.
Keyword ：
Heterostructure Heterostructure Hydrogen spillover effect Hydrogen spillover effect Formaldehyde oxidation reaction (FOR) Formaldehyde oxidation reaction (FOR) Lower energy barriers Lower energy barriers Dual-electrode hydrogen evolution Dual-electrode hydrogen evolution
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| GB/T 7714 | Zhao, Wen-Kang , Han, Chang-Bao , Ma, Zi-Qiang et al. Hydrogen spillover effect enhanced Cu2O/Cu/Mn2O3 catalyst for dual-electrode electrocatalytic hydrogen evolution [J]. | JOURNAL OF ENERGY CHEMISTRY , 2025 , 106 : 291-301 . |
| MLA | Zhao, Wen-Kang et al. "Hydrogen spillover effect enhanced Cu2O/Cu/Mn2O3 catalyst for dual-electrode electrocatalytic hydrogen evolution" . | JOURNAL OF ENERGY CHEMISTRY 106 (2025) : 291-301 . |
| APA | Zhao, Wen-Kang , Han, Chang-Bao , Ma, Zi-Qiang , Chang, Li-Hong , Zheng, Jia-Yu , Hao, Ming-Yang et al. Hydrogen spillover effect enhanced Cu2O/Cu/Mn2O3 catalyst for dual-electrode electrocatalytic hydrogen evolution . | JOURNAL OF ENERGY CHEMISTRY , 2025 , 106 , 291-301 . |
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Abstract ：
The combination of materials with different functions is an optimal strategy for synchronously removing various indoor pollutants. For multiphase composites, exposing all components and their phase interfaces fully to the reaction atmosphere is a critical problem that needs to be solved urgently. Here, a bimetallic oxide Cu2O@MnO2 with exposed phase interfaces was prepared by a surfactant-assisted two-step electrochemical method, which shows a composite structure of non-continuously dispersed Cu2O particles anchored on flower-like MnO2. Compared with the pure catalyst MnO2 and bacteriostatic agent Cu2O, Cu2O@MnO2 respectively shows superior dynamic formaldehyde (HCHO) removal efficiency (97.2% with a weight hourly space velocity of 120 000 mL g(-1) h(-1)) and pathogen inactivation ability (the minimum inhibitory concentration for 10(4) CFU mL(-1)Staphylococcus aureus is 10 mu g mL(-1)). According to material characterization and theoretical calculation, its excellent catalytic-oxidative activity is attributable to the electron-rich region at the phase interface which is fully exposed to the reaction atmosphere, inducing the capture and activation of O-2 on the material surface, and then promoting the generation of reactive oxygen species that can be used for the oxidative-removal of HCHO and bacteria. Additionally, as a photocatalytic semiconductor, Cu2O further enhances the catalytic ability of Cu2O@MnO2 under the assistance of visible light. This work will provide efficient theoretical guidance and a practical basis for the ingenious construction of multiphase coexisting composites in the field of multi-functional indoor pollutant purification strategies.
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| GB/T 7714 | Zheng, Jia Yu , Zhang, Hao , He, Jun Da et al. Bimetallic oxide Cu2O@MnO2 with exposed phase interfaces for dual-effect purification of indoor formaldehyde and pathogenic bacteria [J]. | NANOSCALE ADVANCES , 2023 , 5 (7) : 2027-2037 . |
| MLA | Zheng, Jia Yu et al. "Bimetallic oxide Cu2O@MnO2 with exposed phase interfaces for dual-effect purification of indoor formaldehyde and pathogenic bacteria" . | NANOSCALE ADVANCES 5 . 7 (2023) : 2027-2037 . |
| APA | Zheng, Jia Yu , Zhang, Hao , He, Jun Da , Tian, Bo Hai , Han, Chang Bao , Cui, Zhixiang et al. Bimetallic oxide Cu2O@MnO2 with exposed phase interfaces for dual-effect purification of indoor formaldehyde and pathogenic bacteria . | NANOSCALE ADVANCES , 2023 , 5 (7) , 2027-2037 . |
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Abstract ：
The accumulation of intermediates is an important reason for the inactivation of many catalysts including formaldehyde (HCHO) degradation materials. Herein, self-powered triboelectric catalysts (MnOx-PMMA-SSM) with a three-dimensional nanocomposite structure self-assembled by nanoflowered MnOx inlaid porous poly methyl methacrylate (PMMA) nanofibers based on stainless steel mesh (SSM) substrate, is fabricated by electrostatic spinning and hydrolysis methods. The self-powered triboelectric catalysts can promote the generation of reactive oxygen species (O*) under the action of triboelectric charges from the friction between PMMA fibers and SSM driven by the wind, thus promoting the catalytic oxidation of HCHO and intermediates. In the 15 ppm HCHO atmosphere, the CO2 production efficiency for the self-powered triboelectric catalysts can improve 36.25% up to78.93% compared with traditional MnOx catalysts, and the catalyst life is as high as 72 h without evident decay. This research provides a new strategy for high-efficiency, long-term and zero-energy degradation HCHO at room temperature.
Keyword ：
Formaldehyde (HCHO) Formaldehyde (HCHO) Manganese oxide (MnOx) Manganese oxide (MnOx) Intermediates Intermediates Triboelectric charges Triboelectric charges Catalytic oxidation Catalytic oxidation
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| GB/T 7714 | Zhao, Wen Kang , Zheng, Jia Yu , Han, Chang Bao et al. MnOx-PMMA self-powered triboelectric catalysts based on three-dimensional nanocomposite structures for formaldehyde degradation at room temperature [J]. | CHEMICAL ENGINEERING JOURNAL , 2022 , 440 . |
| MLA | Zhao, Wen Kang et al. "MnOx-PMMA self-powered triboelectric catalysts based on three-dimensional nanocomposite structures for formaldehyde degradation at room temperature" . | CHEMICAL ENGINEERING JOURNAL 440 (2022) . |
| APA | Zhao, Wen Kang , Zheng, Jia Yu , Han, Chang Bao , Ruan, Jun , Lu, Yuangang , Zhou, Kai Ling et al. MnOx-PMMA self-powered triboelectric catalysts based on three-dimensional nanocomposite structures for formaldehyde degradation at room temperature . | CHEMICAL ENGINEERING JOURNAL , 2022 , 440 . |
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Abstract ：
Perovskite solar cells (PSCs) have received tremendous attention because of their advantages of low fabrication cost and rising power conversion efficiency (PCE). However, the poor crystalline quality of perovskite materials leads to nonradiative recombination, which hinders the fabrication of high-performance PSCs. Herein, a new method is provided to improve the crystalline quality of perovskite films by applying an external electric field (EEF) during the two-step deposition process. High-quality films were obtained by regulating ion (MA(+) and FA(+)) migration behavior in lead iodide (PbI2) with an similar to MV m(-1) electric field. The results show that the trap density can yield an similar to 22.63% drop to 2.82 x 10(15) cm(-3) after the EEF-assisted process. Meanwhile, the solar cell has shown a nearly 5% improvement of PCE to 19.76% and an similar to 86.7% mitigation of the hysteresis index to 3.49%, compared with the pristine one. The results can be ascribed to the ion (MA(+) and FA(+)) migration to PbI2 under the EEF, thereby forming a film with few defects at surfaces and between grain boundaries, which will effectively reduce the photo-generated electron-hole nonradiative recombination in PSCs. This work provides a new physical approach to fabricate high-quality perovskite materials for enhancing the performance of photovoltaic devices.
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| GB/T 7714 | Wang, Man Qi , Zhang, Xiaobo , Yan, Shaoxin et al. An electric-field regulated crystallization process for enhanced performance of perovskite solar cells [J]. | SUSTAINABLE ENERGY & FUELS , 2022 , 6 (4) : 1121-1130 . |
| MLA | Wang, Man Qi et al. "An electric-field regulated crystallization process for enhanced performance of perovskite solar cells" . | SUSTAINABLE ENERGY & FUELS 6 . 4 (2022) : 1121-1130 . |
| APA | Wang, Man Qi , Zhang, Xiaobo , Yan, Shaoxin , Ouedraogo, Nabonswende Aida Nadege , Zhang, Yongzhe , Yan, Hui et al. An electric-field regulated crystallization process for enhanced performance of perovskite solar cells . | SUSTAINABLE ENERGY & FUELS , 2022 , 6 (4) , 1121-1130 . |
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Abstract ：
Indoor formaldehyde (HCHO) pollution has become a serious issue to threaten human health. Therefore, it is urgent to develop long-term and efficient HCHO removal materials and technology with low energy consumption. In this study, the MnOx was deposited in-situ by hydrothermal synthesis on the hydrolyzed PI fibers. By harvesting the kinetic energy of wind, triboelectric charges and electric field are generated between MnOx-PI and nylon fibers. The employment of triboelectric charges on the catalyst is an effective way to increase conversion rates of O*, which may help to accelerate the decomposition of intermediates, enhance efficiency, and enlarge the life of the catalyst. As a result, during the static testing, the HCHO removal efficiency reached 92.4% of MnOx-PI-1.0 h-nylon within 1100 mins at room temperature, which was much higher than that of the MnOx-PI-1.0 h sample (56.3%). In addition, the removal efficiency of the MnOx-PI-2.0 h-nylon remained above 95% during the 48-hours dynamic test. The present study provides a new route to achieve long-term efficient removal of HCHO in the indoor environment and extended the application for the nano-triboelectric in the catalytic field. © 2020
Keyword ：
Formaldehyde Formaldehyde Kinetics Kinetics Energy utilization Energy utilization Polyamides Polyamides Rayon Rayon Triboelectricity Triboelectricity Kinetic energy Kinetic energy Electric fields Electric fields Catalysts Catalysts Manganese compounds Manganese compounds Hydrothermal synthesis Hydrothermal synthesis
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| GB/T 7714 | Zhao, Wen Kang , Zheng, Jia Yu , Wang, Xinxin et al. Removal of formaldehyde by triboelectric charges enhanced MnOx-PI at room temperature [J]. | Applied Surface Science , 2021 , 541 . |
| MLA | Zhao, Wen Kang et al. "Removal of formaldehyde by triboelectric charges enhanced MnOx-PI at room temperature" . | Applied Surface Science 541 (2021) . |
| APA | Zhao, Wen Kang , Zheng, Jia Yu , Wang, Xinxin , Ma, Tiejun , Zhou, Kai Ling , Wang, Hao et al. Removal of formaldehyde by triboelectric charges enhanced MnOx-PI at room temperature . | Applied Surface Science , 2021 , 541 . |
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Abstract ：
Single-atom catalysts (SACs) have exhibited extraordinary catalytic performance due to the utmost atom utilization efficiency and unique electronic statesviametal-support interactions. Rationally designing SACs at the atomic level by structural engineering is desirable for an efficient hydrogen evolution reaction (HER). Herein, single-atom Pt was anchored on two-dimensional (2D) Co(OH)(2)nanosheets growing on Ag nanowires (Pt-SA-Co(OH)(2)@Ag NW) to construct a seamlessly conductive network hybrid catalystviaelectrochemical phase transformation from metallic Co@Ag NW. The Ag NW network provides a continuous electron transport pathway through metal active sites, contributing to an extremely low charge transfer resistance (R-ct, 0.7 omega), and the hierarchical nanostructure has a large electrochemical surface area for high atom utilization efficiency and rich mass transport pathways for hydrogen generation and release. Moreover, Co(OH)(2)tailored Pt sites induce a local tip-enhancement electric field region around the Pt site and more d contribution for boosting H adsorption and H2O adsorption. Thus, the synthesized Pt-SA-Co(OH)(2)@Ag NW catalyst shows outstanding HER activity with only 29 mV overpotential in 1.0 M KOH at 10 mA cm(-2)and 22.5-fold higher mass activity than the commercial Pt/C catalyst.
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| GB/T 7714 | Zhou, Kai Ling , Wang, Changhao , Wang, Zelin et al. Seamlessly conductive Co(OH)(2)tailored atomically dispersed Pt electrocatalyst with a hierarchical nanostructure for an efficient hydrogen evolution reaction [J]. | ENERGY & ENVIRONMENTAL SCIENCE , 2020 , 13 (9) : 3082-3092 . |
| MLA | Zhou, Kai Ling et al. "Seamlessly conductive Co(OH)(2)tailored atomically dispersed Pt electrocatalyst with a hierarchical nanostructure for an efficient hydrogen evolution reaction" . | ENERGY & ENVIRONMENTAL SCIENCE 13 . 9 (2020) : 3082-3092 . |
| APA | Zhou, Kai Ling , Wang, Changhao , Wang, Zelin , Han, Chang Bao , Zhang, Qianqian , Ke, Xiaoxing et al. Seamlessly conductive Co(OH)(2)tailored atomically dispersed Pt electrocatalyst with a hierarchical nanostructure for an efficient hydrogen evolution reaction . | ENERGY & ENVIRONMENTAL SCIENCE , 2020 , 13 (9) , 3082-3092 . |
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Abstract ：
Flexible perovskite solar cells (F-PSCs) are attracting tremendous research interest due to their light weight and flexibility. However, the poor quality of perovskite films caused by deformation of flexible substrates during a general heat treatment process hinders the fabrication of high efficiency flexible cells. Here, a simple gradient heat treatment (GHT) process is developed to effectively improve the crystal quality of perovskite films and the efficiency of F-PSCs. The results show that a smaller temperature fall-off gradient will be beneficial to the further growth of perovskite films, which helps to further enhance the crystalline quality. Compared with the conventional method, the power conversion efficiency (PCE) of F-PSCs fabricated by a GHT process with a relatively small gradient significantly improved by 31%, and the maximum PCE increased to 17.37%. This work provides a new idea for ameliorating the quality of perovskite films and enhancing the performances of F-PSCs.
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| GB/T 7714 | Xiao, Yue Yue , Meng, Yongqiang , Gao, Hongli et al. Flexible perovskite solar cells fabricated by a gradient heat treatment process [J]. | SUSTAINABLE ENERGY & FUELS , 2020 , 4 (2) : 824-831 . |
| MLA | Xiao, Yue Yue et al. "Flexible perovskite solar cells fabricated by a gradient heat treatment process" . | SUSTAINABLE ENERGY & FUELS 4 . 2 (2020) : 824-831 . |
| APA | Xiao, Yue Yue , Meng, Yongqiang , Gao, Hongli , Chen, Yichuan , Meng, Qi , Bai, Yanjie et al. Flexible perovskite solar cells fabricated by a gradient heat treatment process . | SUSTAINABLE ENERGY & FUELS , 2020 , 4 (2) , 824-831 . |
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Abstract ：
The poor stability of perovskite solar cells is a crucial obstacle for its commercial applications. Here, we investigate the thermal stability of the mixed cation organic-inorganic lead halide perovskites (FAPbI(3))(1-x)MAPb(Br3-yCly)(x) films and devices in air atmosphere. The results show that with the increase of heat treatment from 25 to 250 degrees C, the MA-perovskite decomposed into PbI2 firstly and the efficiency of corresponding solar cells reduced linearly. For the perovskite film, the increased heat treatment temperature can bring the redshift of the absorption edge leading to the decrease of band gap from 1.569 to 1.508 eV and increase of defect density from 3.87 x 10(17) cm(-3) to 9.03 x 10(17) cm(-3). However, a proper heat treatment time (10 min) at certain temperature (85 degrees C) can passivate defects effectively and improve the efficiency to 16.50%, realizing a 15% relative improvement of average efficiency. This work reveals a detailed thermal decomposition behavior of perovskite material and solar cells, which may provide insights into the stability of perovskite solar cells.
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| GB/T 7714 | Meng, Qi , Chen, Yichuan , Xiao, Yue Yue et al. Effect of temperature on the performance of perovskite solar cells [J]. | JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS , 2020 , 32 (10) : 12784-12792 . |
| MLA | Meng, Qi et al. "Effect of temperature on the performance of perovskite solar cells" . | JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS 32 . 10 (2020) : 12784-12792 . |
| APA | Meng, Qi , Chen, Yichuan , Xiao, Yue Yue , Sun, Junjie , Zhang, Xiaobo , Han, Chang Bao et al. Effect of temperature on the performance of perovskite solar cells . | JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS , 2020 , 32 (10) , 12784-12792 . |
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Abstract ：
A GaN/Si nanoheterostructure array was synthesized using the functional substrate of silicon nanoporous pillar array (Si-NPA) by CVD method. An n-GaN nanocolumnar/p-Si nanocrystalline nanoheterojuction array solar cell was fabricated and the GaN nanocolumnar grew along the 10001] direction. The device has an average integrated reflection of similar to 4.79% at the range of 300-1200 nm. The solar cell showed a Voc of 0.82 V, a Jsc of 23.21 mA, a FF of 38.3% and a maximum power conversion efficiency of 7.29%. The results provide a new conception of mass-nanoheterojuctions for photovoltaic filed.
Keyword ：
Nanoheterostructure array Nanoheterostructure array Silicon nanoporous pillar array (Si-NPA) Silicon nanoporous pillar array (Si-NPA) Gallium nitride (GaN) Gallium nitride (GaN) Solar cells Solar cells
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| GB/T 7714 | Han, Chang Bao . Opto-electrical Properties of GaN/Si Nanoheterostructure Array Device [J]. | 2018 IEEE 7TH WORLD CONFERENCE ON PHOTOVOLTAIC ENERGY CONVERSION (WCPEC) (A JOINT CONFERENCE OF 45TH IEEE PVSC, 28TH PVSEC & 34TH EU PVSEC) , 2018 : 2013-2017 . |
| MLA | Han, Chang Bao . "Opto-electrical Properties of GaN/Si Nanoheterostructure Array Device" . | 2018 IEEE 7TH WORLD CONFERENCE ON PHOTOVOLTAIC ENERGY CONVERSION (WCPEC) (A JOINT CONFERENCE OF 45TH IEEE PVSC, 28TH PVSEC & 34TH EU PVSEC) (2018) : 2013-2017 . |
| APA | Han, Chang Bao . Opto-electrical Properties of GaN/Si Nanoheterostructure Array Device . | 2018 IEEE 7TH WORLD CONFERENCE ON PHOTOVOLTAIC ENERGY CONVERSION (WCPEC) (A JOINT CONFERENCE OF 45TH IEEE PVSC, 28TH PVSEC & 34TH EU PVSEC) , 2018 , 2013-2017 . |
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