析氧
电催化剂
制氢
分解水
糠醇
材料科学
化学工程
可逆氢电极
纳米棒
双功能
无机化学
甲酸
电化学
催化作用
电极
化学
工作电极
纳米技术
有机化学
物理化学
光催化
工程类
作者
Meng Wei,Mingli Li,Qiongzhi Gao,Xin Cai,Shengsen Zhang,Yueping Fang,Feng Peng,Siyuan Yang
出处
期刊:Small
[Wiley]
日期:2023-10-19
卷期号:20 (9)
被引量:6
标识
DOI:10.1002/smll.202305906
摘要
Abstract Replacing traditional oxygen evoltion reaction (OER) with biomass oxidation reaction (BOR) is an advantageous alternative choice to obtain green hydrogen energy from electrocatalytic water splitting. Herein, a novel of extremely homogeneous Ni 3 S 2 nanosheets covered TiO 2 nanorod arrays are in situ growth on conductive Ni foam (Ni/TiO 2 @Ni 3 S 2 ). The Ni/TiO 2 @Ni 3 S 2 electrode exhibits excellent electrocatalytic activity and long‐term stability for both BOR and hydrogen evolution reaction (HER). Especially, taking glucose as a typical biomass, the average hydrogen production rate of the HER‐glucose oxidation reaction (GOR) two‐electrode system reached 984.74 µmol h −1 , about 2.7 times higher than that of in a common HER//OER two‐electrode water splitting system (365.50 µmol h −1 ). The calculated power energy saving efficiency of the GOR//HER system is about 13% less than that of the OER//HER system. Meanwhile, the corresponding selectivity of the value‐added formic acid produced by GOR reaches about 80%. Moreover, the Ni/TiO 2 @Ni 3 S 2 electrode also exhibits excellent electrocatalytic activity on a diverse range of typical biomass intermediates, such as urea, sucrose, fructose, furfuryl alcohol (FFA), 5‐hydroxymethylfurfural (HMF), and alcohol (EtOH). These results show that Ni/TiO 2 @Ni 3 S 2 has great potential in electrocatalysis, especially in replacing OER reaction with BOR reaction and promoting the sustainable development of hydrogen production.
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