首页|Polar O-Co-P Surface for Bimolecular Activation in Catalytic Hydrogen Generation

Polar O-Co-P Surface for Bimolecular Activation in Catalytic Hydrogen Generation

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Boron hydrides release an abundant amount of hydrogen in the presence of a suitable catalyst.Accelerating bimolecular activation kinetics is the key to designing cost-effective catalysts for borohydride hydrolysis.In this study,the bimolecular activation of a polar O-Co-P site demonstrated superior hydrogen-generation kinetics(turnover frequency,TOF=37 min-1,298 K)and low activation energy(41.0 kJ mol-1)close to that of noble-metal-based catalysts.Through a combination of experiments and theoretical calculations,it was revealed that the activated dangling oxygen atom in the Co-O precursor effectively replaced via surface-phosphorization because of strong electronic interactions between the dangling oxygen and P atoms.This substitution modulated the local coordination environment and electronegativity around the surface Co sites and formed a new polar O-Co-P active site for optimizing the activation kinetics of ammonia borane and water.This strategy based on bimolecular activation may create new avenues in the field of catalysis.

bimolecular activationborohydride hydrolysishydrogen generationnoble-metal-free catalystspolar site

Huanhuan Zhang、Ke Zhang、Saima Ashraf、Yanping Fan、Shuyan Guan、Xianli Wu、Yushan Liu、Baozhong Liu、Baojun Li

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Research Center of Green Catalysis,College of Chemistry,Zhengzhou University,100 Science Road,Zhengzhou 450001,China

College of Chemistry and Chemical Engineering,Henan Polytechnic University,2001 Century Avenue,Jiaozuo 454000,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaPlan for Scientific Innovation Talent of Henan ProvinceKey Project of Educational Commission of Henan Province

220752545207113551871090U180413521805071516710802140116819420051001919A150025

2023

10.1002/eem2.12273

能源与环境材料(英文)

能源与环境材料(英文)

CSCD
ISSN：
年,卷(期)：2023.6(1)
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