首页|Phytic acid-derivative Co2B-CoPOx coralloidal structure with delicate boron vacancy for enhanced hydrogen generation from sodium borohydride

Phytic acid-derivative Co2B-CoPOx coralloidal structure with delicate boron vacancy for enhanced hydrogen generation from sodium borohydride

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Application of transition metal boride(TMB)catalysts towards hydrolysis of NaBH4 holds great signifi-cance to help relieve the energy crisis.Herein,we present a facile and versatile metal-organic framework(MOF)assisted strategy to prepare Co2B-CoPOx with massive boron vacancies by introducing phytic acid(PA)cross-linked Co complexes that are acquired from reaction of PA and ZIF-67 into cobalt boride.The PA etching effectively breaks down the structure of ZIF-67 to create more vacancies,favoring the maxi-mal exposure of active sites and elevation of catalytic activity.Experimental results demonstrate a drastic electronic interaction between Co and the dopant phosphorous(P),thereby the robustly electronega-tive P induces electron redistribution around the metal species,which facilitates the dissociation of B-H bond and the adsorption of H2O molecules.The vacancy-rich Co2B-CoPOx catalyst exhibits scalable per-formance,characterized by a high hydrogen generation rate(HGR)of 7716.7 mL min-1 g-1 and a low activation energy(Ea)of 44.9kJ/mol,rivaling state-of-the-art catalysts.This work provides valuable in-sights for the development of advanced catalysts through P doping and boron vacancy engineering and the design of efficient and sustainable energy conversion systems.

Co2B-CoPOx catalystP dopingBoron vacancyNaBH4 hydrolysisHydrogen generation

Luyan Shi、Ke Zhu、Yuting Yang、Qinrui Liang、Qimin Peng、Shuqing Zhou、Tayirjan Taylor Isimjan、Xiulin Yang

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Guangxi Key Laboratory of Low Carbon Energy Materials,School of Chemistry and Pharmaceutical Sciences,Guangxi Normal University,Guilin 541004,China

Saudi Arabia Basic Industries Corporation(SABIC)at King Abdullah University of Science and Technology(KAUST),Thuwal 23955-6900,Saudi Arabia

国家自然科学基金广西自然科学基金Guangxi Tech-nology Base and Talent SubjectGuangxi Tech-nology Base and Talent SubjectInnovation Project of Guangxi Graduate Educa-tionInnovation Project of Guangxi Graduate Educa-tion

219650052021GXNSFAA076001GUIKE AD18126001GUIKE AD20297039YCSW2023140YCBZ2023062

2024

10.1016/j.cclet.2023.109222

中国化学快报(英文版)
中国化学会

中国化学快报(英文版)

CSTPCD
影响因子：0.771
ISSN：1001-8417
年,卷(期)：2024.35(4)
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