Cobalt Carbonate Hydroxide Nanowire Array on Ti Mesh: An Efficient and Robust 3D Catalyst for On-Demand Hydrogen Generation from Alkaline NaBH4 Solution

Liang Cui; Xuping Sun; Yuanhong Xu; Wenrong Yang; Jingquan Liu

doi:10.1002/chem.201603087

Cobalt Carbonate Hydroxide Nanowire Array on Ti Mesh: An Efficient and Robust 3D Catalyst for On-Demand Hydrogen Generation from Alkaline NaBH₄ Solution

Chemistry. 2016 Oct 10;22(42):14831-14835. doi: 10.1002/chem.201603087. Epub 2016 Sep 9.

Authors

Liang Cui¹, Xuping Sun², Yuanhong Xu¹, Wenrong Yang³, Jingquan Liu⁴

Affiliations

¹ College of Materials Science and Engineering, Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, Qingdao University, Qingdao, 266071, P. R. China.
² College of Chemistry, Sichuan University, Chengdu, 610064, Sichuan, P. R. China.
³ School of Life and Environmental Sciences, Deakin University, Geelong, 3217, VIC, Australia.
⁴ College of Materials Science and Engineering, Laboratory of Fiber Materials and Modern Textile, The Growing Base for State Key Laboratory, Qingdao University, Qingdao, 266071, P. R. China. jliu@qdu.edu.cn.

PMID: 27513921
DOI: 10.1002/chem.201603087

Abstract

In this work, for the first time, a cobalt carbonate hydroxide (Co(CO₃ )_0.5 (OH)⋅0.11 H₂ O) nanowire array on Ti mesh (CHNA/Ti) was applied to drive the dehydrogenation of alkaline NaBH₄ solution for on-demand hydrogen production. Compared with other nanostructured Co-based catalyst systems, CHNA/Ti can be activated more quickly and separated easily from fuel solutions. This self-supported cobalt salt nanowire array catalyst works as an efficient and robust 3D catalyst for the hydrolysis reaction of NaBH₄ with a hydrogen generation rate of 4000 mL min^-1 g_Co^-1 and a low apparent activation energy of 39.78 kJ mol^-1 and offers an attractive system for on-demand hydrogen generation.

Keywords: cobalt carbonate hydroxide; on-demand hydrogen generation; self-supported catalyst; sodium borohydride.