Article
Multidisciplinary Sciences
Chao Feng, Faze Wang, Zhi Liu, Mamiko Nakabayashi, Yequan Xiao, Qiugui Zeng, Jie Fu, Qianbao Wu, Chunhua Cui, Yifan Han, Naoya Shibata, Kazunari Domen, Ian D. Sharp, Yanbo Li
Summary: The study finds that cobalt can promote the self-healing of leached iron centers in borate-intercalated nickel-iron-cobalt oxyhydroxides, leading to the synthesis of an active borate-intercalated NiCoFe-LDH catalyst with self-healing ability under harsh OER conditions. The presence of both ferrous ions and borate ions in the electrolyte is crucial to the catalyst's self-healing, demonstrating its potential for integration into photoelectrochemical devices.
NATURE COMMUNICATIONS
(2021)
Article
Nanoscience & Nanotechnology
Peikun Zhang, Pai Wang, Wei Wang, Qianbao Wu, Mengjun Xiao, Roger Alberto, Yanning Zhang, Chunhua Cui
Summary: A nickel pseudo-complex catalyst exhibited high OER activity and long-term stability in alkaline electrolytes, outperforming other nickel-based catalysts. Coordination of active ligands was found to sustain highly active nickel sites for water oxidation, offering a novel strategy for improving the efficiency of transition metal sites.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Green & Sustainable Science & Technology
Yeol-Lim Lee, Kyoung-Jin Kim, Ga-Ram Hong, Seon-Yong Ahn, Beom-Jun Kim, Jae-Oh Shim, Hyun-Seog Roh
Summary: The study demonstrated the use of water-gas shift reaction to upcycle waste-derived synthesis gas containing sulfur impurities. Pt/CeO2 catalyst showed stable catalytic activity at high sulfur concentrations and exhibited rapid regeneration capabilities.
Article
Chemistry, Multidisciplinary
Kexin Wang, Yali Wang, Bin Yang, Zhongjian Li, Xuetao Qin, Qinghua Zhang, Lecheng Lei, Ming Qiu, Gang Wu, Yang Hou
Summary: Designing acid-stable oxygen evolution reaction (OER) electrocatalysts with low noble-metal content is crucial for green hydrogen generation. In this study, a rutile-structured ruthenium-manganese solid solution oxide with oxygen vacancies (Mn0.73Ru0.27O2-delta) was developed using an electron-feeding modulation strategy. The catalyst exhibited optimal electronic structure and enhanced electrical conductivity, leading to low overpotential and improved OER kinetics. The incorporation of Mn components and O vacancies modulated the adsorption and desorption energy barriers, improving the overall OER kinetics.
ENERGY & ENVIRONMENTAL SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Jiaxin Li, Yajun Chang, Dongze Li, Ligang Feng, Baogang Zhang
Summary: The efficient synergism between high valence state V and Pd nanoparticles enhances their catalytic performance and anti-poisoning ability for alkaline methanol electrooxidation.
CHEMICAL COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Dan Wang, Xiangping Feng, Huan He, Zhiyuan Wang, Runguo Zheng, Hongyu Sun, Yanguo Liu, Chunli Liu
Summary: An amorphous FeCoNiBOx catalyst, fabricated through low-temperature chemical-reduction, exhibits remarkable oxygen evolution reaction (OER) electrocatalytic properties due to the synergistic effects of multiple elements, amorphous nanostructure, and in situ reconstructed surface triggered by borate leaching.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
V. Iacono, C. Lo Po, S. Scalese, S. Boninelli, G. G. Condorelli, M. G. Grimaldi, F. Ruffino
Summary: This study investigated the synthesis of copper and nickel nanoparticles as catalysts for alkaline water splitting reactions. The performance of these catalysts in hydrogen evolution and oxygen evolution reactions was evaluated, and the results showed that both copper and nickel nanoparticles exhibited good catalytic activity. The ultra-low amount of catalyst material used in this study achieved higher mass activity compared to existing technologies.
Article
Chemistry, Physical
Xuelan Hou, Lijun Fan, Yicheng Zhao, Peter D. Lund, Yongdan Li
Summary: This study successfully achieved a highly active and stable photo cathode for hydrogen evolution reaction (HER) through stepwise cathodic reduction of anodic titanium dioxide nanotube without loading any cocatalyst, demonstrating good electrochemical performance in aqueous solution.
JOURNAL OF POWER SOURCES
(2022)
Article
Chemistry, Physical
Biswanath Das, Esteban A. Toledo-Carrillo, Guoqi Li, Jonas Stahle, Thomas Thersleff, Jianhong Chen, Lin Li, Fei Ye, Adam Slabon, Mats Gothelid, Tsu-Chien Weng, Jodie A. Yuwono, Priyank V. Kumar, Oscar Verho, Markus D. Karkas, Joydeep Dutta, Bjorn Akermark
Summary: In this study, a bifunctional and electrochemically regenerable molecular electrode was successfully developed for the stable production of hydrogen. By anchoring a highly active ruthenium electrocatalyst onto modified fluorine-doped carbon cloth, the electrode exhibited high activity for both oxygen evolution reaction and hydrogen evolution reaction in acidic conditions. The electrode design showed excellent electrochemical regeneration performance after prolonged use.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Multidisciplinary
S. Swathi, R. Yuvakkumar, G. Ravi, Abdullah G. Al-Sehemi, Dhayalan Velauthapillai
Summary: In this study, samarium-doped nickel manganese oxide was synthesized using a straightforward co-precipitation method. The crystal structure and bond characteristics of NiMnO3 were confirmed, and the synthesized material exhibited excellent electrochemical oxygen evolution reaction performance. The results suggest that NiMnO3 doped with high concentrations of samarium is a suitable material for next-generation water splitting applications.
NANOSCALE ADVANCES
(2022)
Article
Multidisciplinary Sciences
Mojtaba Amini, Younes Mousazade, Zahra Zand, Mojtaba Bagherzadeh, Mohammad Mahdi Najafpour
Summary: Ultra-small and highly dispersive iron oxide hydroxide has been characterized and shown to exhibit high efficiency and stability in chemical reactions, making it a promising catalyst with potential applications in various fields. The compound is effective for alcohol oxidation, organic sulfide oxidation, and alkene epoxidation reactions, and demonstrates good catalytic activity in water oxidation.
SCIENTIFIC REPORTS
(2021)
Article
Multidisciplinary Sciences
Xinghui Liu, Shibo Xi, Hyunwoo Kim, Ashwani Kumar, Jinsun Lee, Jian Wang, Ngoc Quang Tran, Taehun Yang, Xiaodong Shao, Mengfang Liang, Min Gyu Kim, Hyoyoung Lee
Summary: This study successfully enhanced the stability and performance of catalysts in acidic media by introducing electron-deficient metal surfaces, providing a new strategy for the design of other metal-semiconductor nanocatalysts.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Physical
Su Yan, Wenying Liao, Mengxiao Zhong, Weimo Li, Ce Wang, Nicola Pinna, Wei Chen, Xiaofeng Lu
Summary: This study demonstrates a general strategy to prepare partially oxidized three-dimensional porous ruthenium aerogel and shows its exceptional electrocatalytic performance and potential for water splitting applications.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Zongshan Zhao, Yanhen Wu, Wei Ran, Huachao Zhao, Xiaotian Yu, Jie-fang Sun, Guangzhi He, Jingfu Liu, Rui Liu, Guibin Jiang
Summary: In this study, AuFe3@Pd/gamma-Fe2O3 nanosheets were developed as an in situ regenerable and highly active hydrogenation catalyst. The Pd monolayer sites could be fully regenerated under ambient conditions, initiated by center dot OH radicals from gamma-Fe2O3 nanosheets. The nanosheets exhibited high activity in hydrogenating the carbon-halogen bond and withstand ten rounds of regeneration.
Article
Chemistry, Multidisciplinary
Sakila Khatun, Poulomi Roy
Summary: By inserting vanadium as a third metal into cobalt chromium layered double hydroxides, it not only increases the catalytic activity of the oxygen evolution reaction, but also suppresses the competing cathodic reactions.
CHEMICAL COMMUNICATIONS
(2022)
Article
Engineering, Environmental
Junshan Li, Xiang Wang, Congcong Xing, Luming Li, Shijia Mu, Xu Han, Ren He, Zhifu Liang, Paulina Martinez, Yunan Yi, Qianbao Wu, Huiyan Pan, Jordi Arbiol, Chunhua Cui, Yu Zhang, Andreu Cabot
Summary: This study focuses on the electrochemical reforming of ethanol in alkaline media. By synthesizing a series of Ni1-xCoxSe2 electrocatalysts, the electrocatalytic activity and selectivity for the production of acetate from ethanol can be optimized. The best performance is achieved when low concentrations of Ni are substituted by Co in the cubic NiSe2 phase.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Multidisciplinary Sciences
Shijia Mu, Honglei Lu, Qianbao Wu, Lei Li, Ruijuan Zhao, Chang Long, Chunhua Cui
Summary: This study reveals the important role of Cu delta+ sites on the surface of oxide-derived copper in electrochemical CO2 reduction reaction. The researchers demonstrate that hydroxyl radicals formed in HCO3- solutions can oxidize metallic Cu to surface Cu delta+ species.
NATURE COMMUNICATIONS
(2022)
Article
Materials Science, Multidisciplinary
Xiaobing Shi, Qianbao Wu, Chunhua Cui
Summary: Photoelectrochemical (PEC) water splitting in acid has potential, but stable photoanodes and effective nonprecious cocatalysts are lacking. In this study, the fast photocurrent decay of WO3 and WO3/SnO2 photoanodes under illumination is attributed to hydroxyl radicals generated at electrode/electrolyte interfaces. Introduction of cobalt (Co2+) ions into the electrolyte solves this issue, improving oxygen evolution efficiency and stabilizing the photocurrent density. The scavenging of hydroxyl radicals by vitamin C demonstrates the importance of Co2+ ions. This study provides an ideal model for water oxidation in strong acid.
SCIENCE CHINA-MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yuheng Jiang, Siyang Li, Shikun Wang, Yin Zhang, Chang Long, Jun Xie, Xiaoyu Fan, Wenshi Zhao, Peng Xu, Yingying Fan, Chunhua Cui, Zhiyong Tang
Summary: Selective and efficient CH4 oxidation to CH3OH and HCHO was achieved by precisely controlling the type of as-formed radicals through rational design on photocatalysts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
Xiaobing Shi, Qianbao Wu, Chunhua Cui
Summary: This study reveals that quenching-treated WO3 with preferred (021) facets exhibits highly improved Faradaic efficiency and stability, while untreated WO3 generates abundant (OH)· radicals and suffers from performance degradation.
Article
Nanoscience & Nanotechnology
Honglei Lu, Lei Li, Qianbao Wu, Shijia Mu, Ruijuan Zhao, Xia Zheng, Chang Long, Qing Li, Hongfei Liu, Chunhua Cui
Summary: Selective electrochemical upgrading of CO2 to multicarbon (C2+) products requires a C-C coupling process involving Cu oxidation states. This study reveals the critical role of Cu+ in promoting C-C coupling through coordination with a CO intermediate. Cu+ is dynamically stabilized by the presence of iodide (I-) in HCO3- electrolytes, leading to an increased C2+ Faradaic efficiency. Introducing CuI into I--containing HCO3- electrolytes enables a higher C2+ selectivity for direct CO electroreduction.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Multidisciplinary Sciences
Qianbao Wu, Junwu Liang, Mengjun Xiao, Chang Long, Lei Li, Zhenhua Zeng, Andraz Mavric, Xia Zheng, Jing Zhu, Hai-Wei Liang, Hongfei Liu, Matjaz Valant, Wei Wang, Zhengxing Lv, Jiong Li, Chunhua Cui
Summary: Non-bonding interaction between ligands and oxides can enhance the population of high-valence metal sites, which improves the water oxidation ability of metal oxides.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Physical
Jiawei Du, Shuaihu Jiang, Ruya Zhang, Pai Wang, Chao Ma, Ruijuan Zhao, Chunhua Cui, Yanning Zhang, Yijin Kang
Summary: Electrochemical production of H2O2 via 2e- ORR using Pd with Cu electrodeposition as model material shows promising potential in terms of safety, efficiency, and decentralization. The introduction of Cu promotes the production of H2O2 by stabilizing Pd-O and improving 2e- ORR activity according to spectroscopic analysis and computation. PdCu nanowire synthesis demonstrates high selectivity and production rate towards H2O2.
Article
Chemistry, Physical
Lei Li, Qianbao Wu, Shi-kai Xiang, Shijia Mu, Ruijuan Zhao, Mengjun Xiao, Chang Long, Xia Zheng, Chunhua Cui
Summary: Oxidizing species or radicals generated in water play a vital role in catalysis, the environment, and biology. This study presents a nontrapping chemical transformation pathway to track the formation of water radical cation (H2O+center dot) species, which is sensitive to environmental factors. The researchers discovered that H2O+center dot can react with various compounds, leading to the formation of important intermediates and derivatives. These findings provide a new perspective on radicals in water redox chemistry.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Multidisciplinary Sciences
Mengjun Xiao, Qianbao Wu, Ruiqi Ku, Liujiang Zhou, Chang Long, Junwu Liang, Andraz Mavric, Lei Li, Jing Zhu, Matjaz Valant, Jiong Li, Zhenhua Zeng, Chunhua Cui
Summary: In this study, an amorphous CoOxCly catalyst was deposited in situ in an acidic saline electrolyte containing Co2+ and Cl- ions to enhance the selectivity and stability of chlorine evolution in the chlor-alkali industry. In situ spectroscopic studies and theoretical calculations revealed that Cl- acted as a promoter to enhance the chlorine evolution by preventing the higher oxidation state of Co sites, thus suppressing the oxygen evolution reaction.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Yuheng Jiang, Siyang Li, Shikun Wang, Yin Zhang, Chang Long, Jun Xie, Xiaoyu Fan, Wenshi Zhao, Peng Xu, Yingying Fan, Chunhua Cui, Zhiyong Tang
Summary: We have achieved high selectivity and high productivity of CH3OH and HCHO in CH4 photooxidation for the first time by precisely controlling the type of as-formed radicals through rational design on photocatalysts. By tuning the band structure and active sites (single atoms or nanoparticles) on Au/In2O3 catalysts, we can generate two different radicals, center dot OOH and center dot OH, leading to the formation of CH3OH and HCHO, respectively. The results show remarkable selectivity and yield of HCHO (97.62% and 6.09 mmol g(-1)) on In2O3-supported Au single atoms (Au-1/In2O3) and exceptional selectivity and yield of CH3OH (89.42% and 5.95 mmol g(-1)) on In2O3-supported Au nanoparticles (AuNPs/In2O3) during photocatalytic CH4 oxidation at room temperature for 3 hours. This work opens up a new avenue for efficient and selective CH4 oxidation through the design of composite photocatalysts.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)