Article
Chemistry, Multidisciplinary
Lele Cui, Bin Chen, Longshun Zhang, Chen He, Chen Shu, Hongyu Kang, Jian Qiu, Wenheng Jing, Kostya (Ken) Ostrikov, Zhenghua Zhang
Summary: This study demonstrates an anti-electrowetting carbon film electrode with self-sustained aeration, which is assembled using structurally discontinuously fractured conventional electrocatalyst films. It achieves highly selective and durable electrochemical two-electron oxygen reduction, providing a promising direction for developing cheap and scalable metal-free electrodes for industry-scale H2O2 electrosynthesis.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Article
Chemistry, Physical
Yechen Wang, Yaru Wang, Jianjun Zhao, Min Chen, Xubo Huang, Yiming Xu
Summary: Efficient production of H2O2 was achieved through oxygen reduction reaction on modified WO3 with Au nanoparticles. Au/WO3 showed superior performance due to selective ORR to H2O2 and release of protons into aqueous solution for H2O2 protection from decomposition.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Physical
Hongcen Yang, Fei Ma, Niandi Lu, Shuhao Tian, Guo Liu, Ying Wang, Zhixia Wang, Di Wang, Kun Tao, Hong Zhang, Shanglong Peng
Summary: By embedding transition metal single atoms (TM SAs) in g-C3N4 nanosheets (CNNS), the selectivity and activity for the 2e(-) ORR can be enhanced, leading to the production of H2O2. Ni0.10 SA/CNNS exhibits the best selectivity and highest yield among the TM SA/CNNS catalysts.
NANOSCALE HORIZONS
(2023)
Article
Chemistry, Physical
Qingjia Sun, Guanxing Xu, Bingyan Xiong, Lisong Chen, Jianlin Shi
Summary: Electrocatalytic 2e(-) oxygen reduction reaction (2e(-) ORR) is a promising method for H2O2 production in acidic media. In this study, a novel and high-performance 2e(-) ORR electrocatalyst, NiSe2, was developed and the influence of different anion species on the catalyst performance was investigated. The synthesized NiSe2 exhibited outstanding 2e(-) ORR performance and long-term durability.
Article
Chemistry, Physical
Xiao Huang, Min Song, Jian Zhang, Jingjing Zhang, Wei Liu, Chang Zhang, Wang Zhang, Deli Wang
Summary: This study investigates the H2O2 electrosynthesis performance of three MXene materials and finds that MXenes exhibit excellent two-electron ORR catalytic activity and high stability. Among them, Nb2CTx catalyst shows the best performance with high H2O2 production and rapid organic dye decoloration ability.
Article
Chemistry, Multidisciplinary
Ao Yu, Guoming Ma, Longtao Zhu, Yajing Hu, Ruiling Zhang, Hsien-Yi Hsu, Ping Peng, Fang-Fang Li
Summary: Defects on carbon nanotubes can be used to promote catalytic reactions, and a method involving reduction of CO2 in Li2CO3-based molten salts has been developed to synthesize defect-rich CNTs in an eco-friendly and controllable manner. The degree of defects in CNTs can be adjusted by changing the applied electrolysis current, with lower current favoring the synthesis of CNTs with more defect sites. These defect-rich CNTs, particularly the ones synthesized under 300 mA cm(-2) electrolysis, exhibit superior performance in the oxygen reduction reaction compared to those synthesized under higher current densities.
Article
Nanoscience & Nanotechnology
Guilherme Fortunato, Leticia S. Bezerra, Eduardo S. F. Cardoso, Matheus S. Kronka, Alexsandro J. Santos, Anderson S. Greco, Jorge L. R. Junior, Marcos R. Lanza, Gilberto Maia
Summary: This study reports the synthesis and characterization of low metal-loaded catalysts for the electrocatalytic production of H2O2. The catalysts exhibited high catalytic activity, good selectivity, and improved long-term stability. By optimizing factors such as geometry, metal content, interparticle distance, and site-blocking effects, the catalytic activity and electrochemical stability can be further enhanced.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Chang Liu, Zixun Yu, Fangxin She, Jiaxiang Chen, Fangzhou Liu, Jiangtao Qu, Julie M. Cairney, Chongchong Wu, Kailong Liu, Weijie Yang, Huiling Zheng, Yuan Chen, Hao Li, Li Wei
Summary: By constructing heterogeneous molecular catalysts using cobalt porphyrins and carbon nanotubes, the catalytic properties and activity were successfully modulated, resulting in sustainable production of hydrogen peroxide with high selectivity and activity.
ENERGY & ENVIRONMENTAL SCIENCE
(2023)
Review
Chemistry, Physical
Chaohui He, Chenfeng Xia, Fu-Min Li, Jian Zhang, Wei Guo, Bao Yu Xia
Summary: This review succinctly summarizes the strategies employed to regulate the adsorption state of oxygen species on non-noble metal catalyst surfaces, encompassing insights into the adsorption mechanism and state regulation of oxygen intermediates, with a particular focus on the 2e- oxygen reduction reaction pathway for the production of H2O2.
ADVANCED ENERGY MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Chang Liu, Hao Li, Junsheng Chen, Zixun Yu, Qiang Ru, Shuzhou Li, Graeme Henkelman, Li Wei, Yuan Chen
Summary: The study demonstrates that divalent 3d transition metal cations can control the catalytic activity and selectivity of columbite nanoparticles for efficient electrosynthesis of hydrogen peroxide. The optimal NiNb2O6 catalyst exhibits excellent H2O2 selectivity and Faradaic efficiency in alkaline electrolyte, outperforming other transition metal oxide catalysts. In application demonstrations, NiNb2O6 shows high productivity in producing H2O2 and efficient decomposition of organic dyes, highlighting the great potential of low-cost 3d transition-metal-mediated columbite catalysts.
Article
Chemistry, Physical
Zhe Wang, Qin-Kun Li, Chenhao Zhang, Zhihua Cheng, Weiyin Chen, Emily A. McHugh, Robert A. Carter, Boris Yakobson, James M. Tour
Summary: A metal-free catalyst synthesized from commercial carbon black using plasma treatment was found to exhibit high efficiency in electrochemical generation of hydrogen peroxide. The catalyst showed a high onset potential and the highest mass activity among state-of-the-art catalysts, even after removal of oxygen-containing groups, due to its defective structure after plasma treatment.
Article
Chemistry, Physical
Yang Gao, Xiaohui Xu, Yue Niu, Xinran Hu, Zeyu Li, Longkun Yang, Linjie Zhi, Bin Wang
Summary: A series of viologen-based heterogeneous catalysts with the same molecular skeleton but different substituent groups were synthesized and used as model catalysts to investigate the structure-function relationship for small molecules-based H2O2 electrosynthesis. Viologens can produce H2O2 in a synergistic manner, acting as both oxygen reduction catalysts and redox mediators. Among the samples, a benzyl-substituted viologen (BV) showed the best electrocatalytic performance, with the highest H2O2 selectivity of 96.9% at 0.6 V and the largest ring current density of about 13.6 mA center dot mmol(-1). Density functional theory (DFT) calculations revealed that the carbon atoms bonded with positively charged N are the active sites, and the small HOMO-LUMO energy gap of BV promotes the synergistic mechanism for H2O2 production.
Article
Chemistry, Physical
Minsu Gu, Do-Yeon Lee, Jinhong Mun, Dongseok Kim, Hae-in Cho, Bupmo Kim, Wooyul Kim, Geunsik Lee, Byeong-Su Kim, Hyoung-il Kim
Summary: This article presents a solar-driven photocatalytic process for hydrogen peroxide (H2O2) production using carbon dots as catalysts. The performance of H2O2 production was significantly improved by functionalizing the carbon dots, offering insights for the design of efficient photocatalysts for future solar-to-H2O2 conversion systems.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Physical
Wang Wang, Yanxing Zheng, Youcheng Hu, Yucheng Liu, Shengli Chen
Summary: By introducing a three-dimensional carbon framework with abundant intrinsic defects and oxygen functional groups, outstanding catalytic activity and selectivity towards H2O2 electrosynthesis was achieved. It was successfully determined that intrinsic carbon defects and oxygen functional groups serve as active sites.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2022)
Article
Chemistry, Physical
Zunxing Liu, Dong Wang, Mengqiong Zhang, Hongchao Ma, Guowen Wang
Summary: We evaluated a facile and efficient approach of improving the activity and selectivity of Co-N-C catalysts by introducing O functional groups at different pyrolysis temperatures. H-cell test showed a H2O2 output of 2170 ppm within 6 hours, meeting the in-situ degradation of antibiotics (Ofloxacin) and offering a reliable on-site environmental treatment option.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)