Bifunctional Ni Foam Supported TiO2@Ni3S2 core@shell Nanorod Arrays for Boosting Electrocatalytic Biomass Upgrading and H2 Production Reactions

Author:

Wei Meng1,Li Mingli1,Gao Qiongzhi1,Cai Xin1,Zhang Shengsen1,Fang Yueping1ORCID,Peng Feng2ORCID,Yang Siyuan1ORCID

Affiliation:

1. Key Laboratory for Biobased Materials and Energy of Ministry of Education Guangdong Laboratory for Lingnan Modern Agriculture College of Materials and Energy South China Agricultural University Guangzhou 510642 China

2. School of Chemistry and Chemical Engineering Guangzhou University Guangzhou 51006 China

Abstract

AbstractReplacing 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 Ni3S2 nanosheets covered TiO2 nanorod arrays are in situ growth on conductive Ni foam (Ni/TiO2@Ni3S2). The Ni/TiO2@Ni3S2 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/TiO2@Ni3S2 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/TiO2@Ni3S2 has great potential in electrocatalysis, especially in replacing OER reaction with BOR reaction and promoting the sustainable development of hydrogen production.

Funder

Natural Science Foundation of Guangdong Province

National Natural Science Foundation of China

Publisher

Wiley

Subject

Biomaterials,Biotechnology,General Materials Science,General Chemistry

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