Article
Chemistry, Physical
Xiaofa Su, Sifang Li
Summary: A new type of PVP-stabilized bimetallic Co-Ni nanoparticles as catalyst for hydrogen production from methanolysis of ammonia borane showed good catalytic performance, magnetic recyclability, and synergistic effect between Co and Ni.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Zi-Hao Zhang, Lin -Chang Liu, Chen -Xi Zhang, Hong -Lin Zhu, Yue-Qing Zheng
Summary: A series of Rh1-xCox/Ni@Ni-N-C catalysts were prepared, and the optimized Rh0.75Co0.25/Ni@Ni-N-C catalyst showed good catalytic performance but decreased compared to Rh/Ni@Ni-N-C, possibly due to the loading of RhCo alloy nanoparticles at the defect position of Ni@Ni-N-C and the occupation of Co nanoparticles between Rh and the defective site of the carrier, which weakened the catalytic activity of ammonia borane hydrolysis. The catalytic mechanism of the activation of RhCo-H species was proposed, providing a new strategy for designing alloy-supported nanocatalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Sehrish Mehdi, Yanyan Liu, Huijuan Wei, Huanhuan Zhang, Ruofan Shen, Shuyan Guan, Xianli Wu, Tao Liu, Hao Wen, Zhikun Peng, Chengming Wang, Zhongyi Liu, Huaqiang Cao, Baojun Li
Summary: Co-based interfacial phosphides Co-CoP-NC/NF were prepared through PH3-phosphorization. The uniform growth of CoCoP nanoparticles with turmeric-like morphology was confirmed. P-induced synergistically increases the number of catalytic active sites and electronic modulation of metallic sites, leading to excellent catalytic activity. This work provides a potential avenue for developing monolithic catalysts for industrial applications in the field of heterogeneous catalysis and sustainable energy.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Inorganic & Nuclear
Yao Tian, Chunmei Zeng, Shiyu Yang, Yang Luo, Lunhong Ai, Jing Jiang
Summary: In this study, a cobalt-defective Co3O4 catalyst was synthesized and showed outstanding catalytic activity for the hydrolysis of ammonia borane, along with high hydrogen production rate and low activation energy. The catalyst's performance was well maintained for consecutive cycles.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Jia Chen, Bo Long, Haibin Hu, Ziqing Zhong, Ibrahim Lawa, Fan Zhang, Liwei Wang, Zhanhui Yuan
Summary: A new type of Co-B/copper nanowires/cetyl trimethyl ammonium bromide (Co-B/CuNWs/CTAB) catalyst with high catalytic activity was prepared by chemical reduction. The insertion of CuNWs avoided particle agglomeration and increased the specific surface area of the catalysts, promoting electron transportation and improving catalytic activity.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Naixin Kang, Xiaorong Wei, Ruofan Shen, Baojun Li, Eduardo Guisasola Cal, Sergio Moya, Lionel Salmon, Changlong Wang, Emerson Coy, Murielle Berlande, Jean-Luc Pozzo, Didier Astruc
Summary: This study reports the efficient performance of AuNi@ZIF-8 alloys as nanocatalysts for H2 evolution from ammonia borane hydrolysis under visible-light illumination. The catalytic activity of AuNi@ZIF-8 alloys under visible light was found to be 3.4 times higher than that of the monometallic Ni catalyst in the dark. This improvement is attributed to the superior support of ZIF-8 in Au0.5Ni0.5@ZIF-8 and the localized surface plasmon resonance induced between 450 and 620 nm. The results also reveal that the activation of water is always the rate-determining step.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2023)
Article
Chemistry, Physical
Bin Qu, Ye Tao, Lan Yang, Yihui Liu
Summary: Transition metal phosphide based orange-like Pd@Co@P nanoparticles supported on reduced graphene oxide have been synthesized by a one-pot co-reduction method. The catalyst exhibits higher catalytic activity for the hydrolytic production of ammonia borane, attributed to its unique structure and synergistic electron interactions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Yafei Xu, Jun Wang, Rui Xu, Wuke Li
Summary: The smart catalyst shows temperature-controlled catalytic activity in releasing hydrogen from ammonia borane, with high catalytic activity at room temperature and significantly suppressed hydrogen generation at high temperature. The switchable red luminescence of the composite hydrogel in solution at high/low temperatures offers the possibility to track the catalyst and understand the catalytic mechanism. This thermo-controllable system of hydrogen generation has great potential applications in the safe hydrolysis from chemical hydride fuel.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Dharman Ranjith Kumar, Samikannu Prabu, Kung-Yuh Chiang, Tae Hwan Oh
Summary: This study focuses on the efficient hierarchical catalysts for the hydrolysis of ammonia borane to produce hydrogen. The fabrication of hierarchical Co@Ni metal-organic framework nanocolumn arrays on nickel foam showed outstanding catalytic performance. The synergy between Co and Ni-MOF NCA was found to be the key factor contributing to the enhanced catalytic activity.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Patryk Blaszczak, Marcin Zajac, Agata Ducka, Krzysztof Matlak, Barbara Wolanin, Sea-Fue Wang, Anna Mandziak, Beata Bochentyn, Piotr Jasinski
Summary: In this study, a series of SOECs modified with a small amount of Co ions were used to investigate the synergy between transition metals for enhancing electrochemical and chemical activity. The addition of Co significantly increased the concentration of CH4 and improved the electrochemical efficiency of water and CO2 co-electrolysis. The characterization analysis revealed the mechanism of synergy between Ni and Co host metals and identified the causes of increased activity. Additionally, a novel discovery was made regarding the catalytic performance of NiCo2O4 spinel structure.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Deniz Lim, Goksel Ozkan, Gulay Ozkan
Summary: This study investigates the catalytic hydrolysis of sodium borohydride and ammonia boranes mixtures, focusing on the effect of Zr additive in the catalyst, different catalyst types, molar ratio of the mixture, and temperature. In-situ synthesized Zr-Ni-B catalyst shows better results compared to Ni-B catalyst and improves efficiency at lower temperatures. The addition of Zr increases the surface area of the catalyst. SEM, BET, XPS analyses are used to characterize the catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Inorganic & Nuclear
David Decker, Zhihong Wei, Jabor Rabeah, Hans-Joachim Drexler, Angelika Brueckner, Haijun Jiao, Torsten Beweries
Summary: In this study, a Co(ii) PNNH pincer catalyst system was applied for the highly E-selective transfer semihydrogenation of internal diaryl alkynes. The catalyst system showed high activity, short reaction times, and operated under mild conditions.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Physical
Yong Cheng, Dan Wang, Xiuxiu Wang, Ying-Hua Zhou
Summary: In this study, a high-efficiency tandem catalyst CuO-Ru-0.3@Co3O4 was synthesized for the hydrolytic dehydrogenation of ammonia borane (AB) and the hydrogenation of nitrobenzenes (NBs). The catalyst showed high activity and good cyclic stability.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Bilge Coskuner Filiz, Beyza Nur Kinsiz, Serpil Kilic Depren, Aysel Kanturk Figen
Summary: This study presents a catalyst regeneration strategy based on solvent washing to restore the high initial catalytic activity of Co-based catalysts. The results showed that solvent washing at optimal conditions was an effective method for restoring the activity. This research is significant for the application of ammonia borane as a hydrogen storage medium and the release of hydrogen for hydrogen energy systems.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Nanoscience & Nanotechnology
Sehrish Mehdi, Yanyan Liu, Huijuan Wei, Hao Wen, Ruofan Shen, Zhikun Peng, Huanhuan Zhang, Xianli Wu, Chengming Wang, Shuyan Guan, Tao Liu, Baojun Li
Summary: In this study, Co-NC/NF monolithic catalyst was prepared by the pyrolysis of ZIF-67/NF precursor on Ni foam using manual coating. The catalyst exhibited excellent catalytic activity and stability in the hydrolysis of ammonia borane reaction. This research has the potential for application in industrial fields such as energy storage and conversion.
ACS APPLIED NANO MATERIALS
(2022)