TY - JOUR
T1 - Crystal-facet-dependent catalysis of anatase TiO2 on hydrogen storage of MgH2
AU - Ma, Zhongliang
AU - Liu, Jiangchuan
AU - Zhu, Yunfeng
AU - Zhao, Yingyan
AU - Lin, Huaijun
AU - Zhang, Yao
AU - Li, Haiwen
AU - Zhang, Jiguang
AU - Liu, Yana
AU - Gao, Wentian
AU - Li, Shanshan
AU - Li, Liquan
N1 - Funding Information:
This work was supported by the National Natural Science Foundation of China ( 51771092 , 51601090 and 21975125 ), Postgraduate Research & Practice Innovation Program of Jiangsu Province ( KYCX19_0834 ), Six Talent Peaks Project in Jiangsu Province ( 2018, XNY-020 ), Guangdong Basic and Applied Basic Research Foundation (No. 2019A1515011985 ), the Program of China Scholarships Council (CSC, No. 201908320406 ) and the Priority Academic Program Development (PAPD) of Jiangsu Higher Education Institutions . Appendix A
PY - 2020/5/5
Y1 - 2020/5/5
N2 - Various catalysts are developed to enhance the hydrogen storage performances of magnesium based hydride. In particular, the morphology of catalysts governs their surface energy and chemical interactions with Mg and hydrogen, which makes it possible to adjust the hydrogen reaction kinetics of MgH2 through morphological design of the catalysts. Here, we report a novel crystal-facet-dependent catalysis of TiO2 on hydrogen storage of MgH2. Different facets dominant anatase TiO2 (named TFx, x = 0, 10, 30, 50, 70 and 80) are prepared via a hydrothermal synthesis approach and then doped into MgH2 via ball milling. Results show anatase TiO2 with high percentage {001} facets has much better catalytic effect than that with low percentage {001} facets. The MgH2-TF70 exhibits the best hydrogen sorption kinetics, showing apparent activation energy for dehydriding of only 76.1 ± 1.6 kJ mol−1. The present study constructs a new bridge between the catalytic effect of catalysts with different crystal facets and the hydrogen storage property of MgH2.
AB - Various catalysts are developed to enhance the hydrogen storage performances of magnesium based hydride. In particular, the morphology of catalysts governs their surface energy and chemical interactions with Mg and hydrogen, which makes it possible to adjust the hydrogen reaction kinetics of MgH2 through morphological design of the catalysts. Here, we report a novel crystal-facet-dependent catalysis of TiO2 on hydrogen storage of MgH2. Different facets dominant anatase TiO2 (named TFx, x = 0, 10, 30, 50, 70 and 80) are prepared via a hydrothermal synthesis approach and then doped into MgH2 via ball milling. Results show anatase TiO2 with high percentage {001} facets has much better catalytic effect than that with low percentage {001} facets. The MgH2-TF70 exhibits the best hydrogen sorption kinetics, showing apparent activation energy for dehydriding of only 76.1 ± 1.6 kJ mol−1. The present study constructs a new bridge between the catalytic effect of catalysts with different crystal facets and the hydrogen storage property of MgH2.
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U2 - 10.1016/j.jallcom.2019.153553
DO - 10.1016/j.jallcom.2019.153553
M3 - Article
AN - SCOPUS:85077066029
SN - 0925-8388
VL - 822
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
M1 - 153553
ER -