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Updated: Sep 28, 2025
Chemical Precipitation Method for the Synthesis of Nb2O5 Modified Bulk Nickel Catalysts with High Specific Surface Area
Published on: February 19, 2018
The crystal structure and oxygen reduction reaction of Ni(II)-complex templated borate-sulfate and borate
Shu-Sheng Xin1, Yan-Ling Deng1, Chun-Yang Pan1
1School of Light Industry and Chemical Engineering, Guangdong University of Technology, Guangzhou, Guangdong 510006, China. panchuny@gdut.edu.cn.
Abstract:
Three nickel borate compounds, [Ni(1-MI)6]·[B(OH)3]4·SO4 (1-MI = 1-methylimidazole) (1), [Ni(H2O)3(1-MI)3]·[B5O6(OH)4]2 (2) and [Ni(DMA3)]·[B6O7(OH)6]·3.5H2O (DMA3 = N,N-dimethylethylenediamine) (3), have been synthesized. It is noteworthy that the structures of 1 and 2 can be adjusted by varying the ratio of amine. Compound 3 has shown an unexpected example of unique water clusters in its structure. The three frameworks exhibit different interlinkage modes, resulting in channels varying in their size and shape. These compounds have been characterized by FTIR, UV-vis and PXRD. In addition, 1, 2, and 3 exhibited different wide band gaps (4.4 eV for 1, 4.5 eV for 2 and 4.4 eV for 3), and ORR activities with a half-wave potential of 0.78 V for 1, 0.74 V for 2 and 0.79 V for 3.
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