Article
Chemistry, Physical
Zunhang Lv, Kaihang Wang, Yingying Si, Zihan Li, Tianpeng Yu, Xin Liu, Guixue Wang, Guangwen Xie, Luhua Jiang
Summary: By judiciously engineering the electrocatalysts, the researchers successfully designed a Co-P/Ni-Fe-P/NF electrode with excellent electrocatalytic activity for hydrogen evolution reaction in alkaline medium. The electrode exhibited a low overpotential of 43.4 mV at 10 mA cm-2 and demonstrated long-term stability for 72 hours. This innovative work may contribute to further development of commercial electrocatalysts.
GREEN ENERGY & ENVIRONMENT
(2022)
Article
Chemistry, Physical
Jifeng Deng, Kurbannisa Kadeer, Chaoyuan Hu, Zewei Xie, Yu Shi, Xiao Liu, Lei Xie, Jinrong Xu, Jie Zheng, Xingguo Li
Summary: In this study, a sponge catalyst for hydrogen generation from liquid hydrogen carriers was developed. The commercial melamine formaldehyde (MF) sponge was modified by grafting polyvinyl alcohol (PVA) through acid-catalyzed acetalization with formaldehyde. The resulting polyvinyl formal/MF (PVF/MF) composite sponge exhibited excellent characteristics as a catalyst, including high activity, high hydrogen storage density, easy catalyst recycling, and quasi-solid state behavior during H-2 generation, as demonstrated in the applications of NaBH4 solution and thermal dehydrogenation of perhydro N-ethylcarbazole.
JOURNAL OF POWER SOURCES
(2023)
Article
Chemistry, Physical
Burcu Kiren, Nezihe Ayas
Summary: Hydrogen is expected to play a crucial role as an environmentally friendly and flexible energy carrier in future energy systems. This study investigates the effects of catalyst composition and reaction conditions on hydrogen yield in the hydrolysis of NaBH4, and identifies that a catalyst with 40 wt% Ni content exhibits the best performance under specific conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Bohyeon Kim, Gautam Das, Jihyeon Kim, Hyon Hee Yoon, Dal Ho Lee
Summary: A free-standing catalyst electrode for urea electrolysis was synthesized by electroless plating of NiCoB alloy onto a flexible carbon felt. The synthesized NiCoB@C catalyst showed high catalytic activity and low cell voltage for urea and urine electrolysis.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Physical
Neslihan Erat, Gamze Bozkurt, Abdulkadir Ozer
Summary: This paper presents the catalytic effect of Co doping on different oxide supports (single, bimetallic, and trimetallic) for the hydrolysis of NaBH4 aqueous solutions. The Co/CuO-NiO-Al2O3 catalyst shows high reaction activity at 25 degrees C and exhibits good reusability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Review
Chemistry, Physical
Dongyan Xu, Yan Zhang, Qingjie Guo
Summary: This review summarizes recent advances in metallic and nonmetallic catalysts for the alcoholysis of NaBH4, discusses the advantages and disadvantages of various catalysts, and explores the catalytic mechanisms related to NaBH4 methanolysis.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Fahriye Donmez, Nezihe Ayas
Summary: In this study, Ni/TiO2 catalysts were synthesized using the sol-gel technique and characterized through various methods, while the effects of different factors on hydrogen production performance were investigated. It was found that high hydrogen yield and production rate could be achieved under specific reaction conditions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Mohammad Hassan Loghmani, Mona Jalali Rad
Summary: In this study, the use of extracted Glucomannan from Orchis Mascula as a matrix for stable cobalt catalysts in the hydrolysis of sodium borohydride for hydrogen generation was explored. The size, morphology, and activity of Co-glucomannan powders were studied by varying MAA/MBA ratios, with characterization done using XRD, XPS, FE-SEM, and TEM techniques. The catalytic activity of Co-glucomannan was tested on the hydrolysis of sodium borohydride, and kinetic studies were used to determine the partial order respect to catalyst dosage and initial concentration of sodium borohydride. The activation energy of the reaction was calculated using the Arrhenius equation.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Valentina G. Minkina, Stanislav I. Shabunya, Vladimir I. Kalinin, Vladimir V. Martynenko
Summary: This study investigated the catalytic hydrolysis of aqueous NaBH4 solutions and found that the catalyst used showed stable catalytic activity. It was also observed that conducting the hydrolysis under near adiabatic conditions significantly reduced the hydrolysis time.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Tzu-Ho Wu, Zi-Ting Qiu, Chih-Ning Hsieh
Summary: This study successfully synthesized a NiP/CNTs/NF electrocatalyst through a simple method and demonstrated its excellent electrocatalytic performance in urea electrolysis, paving the way for obtaining highly efficient electrocatalysts.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
A. Balciunaite, Z. Sukackiene, K. Antanaviciute, J. Vaiciuniene, A. Naujokaitis, L. Tamasauskaite-Tamasiunaite, E. Norkus
Summary: Effective Co/Cu, CoB/Cu, and CoBM (M = Mo,Zn,Fe)/Cu catalysts were prepared on the copper surface using a simple electroless deposition method. These catalysts showed catalytic activity for hydrogen generation from an alkaline sodium borohydride solution. The CoBMo/Cu catalyst exhibited the lowest activation energy and highest hydrogen generation rate, with excellent reusability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Wenkai Huang, Fuhua Xu, Xiang Liu
Summary: Adding nonprecious metal Co or Ni to Ru enhances the H2 generation efficiency synergistically, while alloying with Fe or Cu impedes it. Among them, Co-Ru/C exhibits the highest catalytic activity for H2 generation, with a TOF of 117.69 mol(H2)•molRu-1•min-1, significantly higher than Ru/C's 57.08 mol(H2)•molRu-1•min-1. Moreover, Co-Ru/C shows a TOF of 436.51 mol(H2)•molRu-1•min-1 (96.7 L(H2)•gRu-1•min-1) in the presence of NaOH.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Su Sang Yu, Tae Hoon Lee, Taek Hyun Oh
Summary: In this study, an Ag-Ni electrocatalyst supported on multiwalled carbon nanotubes was investigated for direct borohydride-hydrogen peroxide fuel cells. The Ag41Ni59/MWCNTs catalyst exhibited the highest catalytic activity and selectivity among the investigated catalysts. The prepared Ag-Ni bimetallic electrocatalyst has moderate catalytic activity and selectivity and is cost effective.
Article
Materials Science, Multidisciplinary
Huanhuan Zhang, Ke Zhang, Saima Ashraf, Yanping Fan, Shuyan Guan, Xianli Wu, Yushan Liu, Baozhong Liu, Baojun Li
Summary: In this study, a strategy based on bimolecular activation was found to optimize the activation kinetics of borohydride hydrolysis catalysts. By replacing the surface Co sites through surface-phosphorization, a new active site was formed, which modulated the coordination environment and electronegativity around the Co sites, resulting in improved hydrogen-generation kinetics. This strategy may have important implications in the field of catalysis.
ENERGY & ENVIRONMENTAL MATERIALS
(2023)
Article
Chemistry, Physical
A. Kytsya, V Berezovets, Yu Verbovytskyy, L. Bazylyak, V Kordan, I Zavaliy, V. A. Yartys
Summary: In this study, Ni-Co bimetallic nanoparticles were successfully synthesized, and the effects of different Ni contents on particle size and polydispersity were observed. Ni50Co50 showed the highest catalytic activity for the hydrolysis of alkaline NaBH4 solutions. The kinetic studies revealed that the hydrolysis rate increased with higher NaBH4 concentration and decreased with higher pH value of the solution. The activation energy of the reaction decreased with decreasing NaBH4 and catalyst contents.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Yongsheng Wei, Wei Meng, Yan Wang, Yanxin Gao, Kezhen Qi, Ke Zhang
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2017)
Article
Chemistry, Physical
Yongsheng Wei, Ru Wang, Liyuan Meng, Yan Wang, Guode Li, Shigang Xin, Xinsheng Zhao, Ke Zhang
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2017)
Article
Chemistry, Physical
Yongsheng Wei, Xingkai Huang, Junyan Wang, Haiyan Yu, Xinsheng Zhao, Daojian Cheng
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2017)
Article
Chemistry, Physical
Yongsheng Wei, Yan Wang, Lu Wei, Xinsheng Zhao, Xiangyang Zhou, Hongtan Liu
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2018)
Article
Chemistry, Multidisciplinary
Lu Wei, Yu-Jie Mao, Yong-Sheng Wei, Jian-Wei Li, Xin-Ming Nie, Xin-Sheng Zhao, You-Jun Fan, Shi-Gang Sun
CRYSTAL GROWTH & DESIGN
(2019)
Article
Chemistry, Physical
Maosen Wang, Wenying Fu, Lei Du, Yongsheng Wei, Peng Rao, Lu Wei, Xinsheng Zhao, Yun Wang, Shuhui Sun
APPLIED SURFACE SCIENCE
(2020)
Article
Chemistry, Physical
Yongsheng Wei, Maosen Wang, Wenying Fu, Lu Wei, Xinsheng Zhao, Xiangyang Zhou, Meng Ni, Haijiang Wang
JOURNAL OF ALLOYS AND COMPOUNDS
(2020)
Article
Nanoscience & Nanotechnology
Yongsheng Wei, Peichao Zou, Yuanchao Yue, Maosen Wang, Wenying Fu, Si Si, Lu Wei, Xinsheng Zhao, Guangzhou Hu, Huolin L. Xin
Summary: In this study, a quaternary B/P-codoped transition metal Co-Mo hybrid was reported as an efficient alternative catalyst for overall water splitting, exhibiting high catalytic activity and long-term stability in 1.0 M KOH solution.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Materials Science, Multidisciplinary
Yongsheng Wei, Maoseng Wang, Wenying Fu, Si Si, Lu Wei, Xinsheng Zhao, Yan Wang
Summary: An effective strategy was developed to synthesize a nanostructured MnCoP catalyst on nickel foam for the hydrolysis of NaBH4 solution, demonstrating outstanding catalytic performance with high stability.
Article
Chemistry, Multidisciplinary
Feng Liu, Xin Jiang, Hong-Hui Wang, Cheng Chen, Yu-Han Yang, Tian Sheng, Yong-Sheng Wei, Xin-Sheng Zhao, Lu Wei
Summary: This study explores the use of high-index faceted Au nanocrystals as efficient catalysts in the electrocatalytic hydrazine oxidation reaction (HzOR). Theoretical calculations reveal that the Au(551) surface is more active than the Au (111) surface, and the step atoms on the Au(551) surface enhance HzOR. Experimentally, concave trioctahedral Au nanocrystals enclosed by {551} high-index facets showed excellent electrocatalytic performance for HzOR. The study provides new insights into electrocatalytic HzOR over Au high-index facets and presents a rational design of high-performance electrocatalysts.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Yu-Chen Jiang, Yu-Jie Mao, Jin Zou, Hong-Hui Wang, Feng Liu, Yong-Sheng Wei, Tian Sheng, Xin-Sheng Zhao, Lu Wei
CHEMICAL COMMUNICATIONS
(2020)
Article
Chemistry, Physical
Lu Wei, Yu-Jie Mao, Feng Liu, Tian Sheng, Yong-Sheng Wei, Jian-Wei Li, You-Jun Fan, Xin-Sheng Zhao
ACS APPLIED ENERGY MATERIALS
(2019)
Article
Chemistry, Multidisciplinary
Yu-Jie Mao, Lu Wei, Xin-Sheng Zhao, Yong-Sheng Wei, Jian-Wei Li, Tian Sheng, Fu-Chun Zhu, Na Tian, Zhi-You Zhou, Shi-Gang Sun
CHEMICAL COMMUNICATIONS
(2019)
Article
Materials Science, Multidisciplinary
Wei Lu, Mao Yujie, Zhao Xinsheng, Wei Yongsheng, Li Jianwei
RARE METAL MATERIALS AND ENGINEERING
(2019)