Spray-drying of milk for oxygen evolution electrocatalyst and solar water splitting

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• 作者：Chenyi Cai^a ; ¹ ; Min Kuang^b ; ¹ ; Xiling Chen^a ; Hao Wu^b ; Hongtao Ge^b ; Gengfeng Zheng^b ; ^{gfzheng@fudan.edu.cn" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Water splitting ; Electrocatalyst ; Oxygen evolution reaction ; Milk ; Overpotential
• 刊名：Journal of Colloid and Interface Science
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：487
• 期：Complete
• 页码：118-122
• 全文大小：1659 K

文摘

The development of efficient and robust electrocatalyst has been the central of the solar water splitting-based hydrogen fuel acquisition. In this work, we reported the use of cow milk, with addition of tetraethyl orthosilicate (TEOS) and melamine, for the synthesis of nitrogen-doped mesoporous carbon microspheres. Due to the large surface and enhanced charge transport behavior, the obtained samples enabled low overpotentials and a small Tafel slope toward oxygen evolution reaction, which were close or comparable to the best OER catalysts of carbon materials reported previously. Further incorporation of this catalyst and a Pt wire to a commercial solar cell, the direct solar-to-hydrogen conversion was realized, with a stability of over 30 h.