A mild H3BO3 environment for water splitting

作者：Yu, Zhuobin; Zhao, Qiang; Hao, Genyan; Yuan, Wen; Li, Jinping^*

来源：International Journal of Hydrogen Energy, 2013, 38(25): 10191-10195.

DOI：10.1016/j.ijhydene.2013.06.038

• Electrodeposition
• Oxygen-evolving catalyst
• Electrolyte
• Water splitting

A weakly acidic H3BO3 solution (pH = 5.1) was used to synthesize new oxygen-evolution catalysts for water splitting under mild conditions. Two novel oxygen-evolution catalysts, Co-BA(i) and Mn-BA(i) (BA(i) = inorganic boric acid), were obtained in the H3BO3 solution with added Co2+ and Mn2+, respectively. The average oxygen evolution rate in the H3BO3 solution with Co2+ was 0.3133 mu mol/h, about 70 times greater than the rate without a metal ion; the rate with Mn2+ was 1.13 mu mol/h, about 250 times greater. The phases, morphologies, and compositions of the Co-BA(i) and Mn-BA(i) catalysts were analysed by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy.

• 出版日期2013-8-21
• 单位太原理工大学; 太原师范学院