In situ Mo-doped ZnIn2S4/Ni-Ni Hofmann-type coordination polymer composites for photocatalytic hydrogen evolution reaction

Luyang Zuo; Rui Li; Qi Liu; Yabing Duan; Hongwei Wang; Huitao Fan; Bo Li; Liya Wang

doi:10.1016/j.jcis.2024.01.162

In situ Mo-doped ZnIn₂S₄/Ni-Ni Hofmann-type coordination polymer composites for photocatalytic hydrogen evolution reaction

J Colloid Interface Sci. 2024 May:661:207-218. doi: 10.1016/j.jcis.2024.01.162. Epub 2024 Jan 27.

Authors

Luyang Zuo¹, Rui Li¹, Qi Liu¹, Yabing Duan¹, Hongwei Wang¹, Huitao Fan², Bo Li³, Liya Wang⁴

Affiliations

¹ College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, 473601, PR China.
² College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, 473601, PR China. Electronic address: fanhuitao818@nynu.edu.cn.
³ College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, 473601, PR China. Electronic address: libony0107@nynu.edu.cn.
⁴ College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, 473601, PR China. Electronic address: wly@nynu.edu.cn.

PMID: 38301459
DOI: 10.1016/j.jcis.2024.01.162

Abstract

Solar energy-assisted hydrogen production technology is an essential tool for exploring hydrogen energy. To date, semiconductors have been used as the primary photocatalyst to generate hydrogen via photocatalytic water splitting. However, the high photogenerated electron-hole recombination rate of semiconductor photocatalysts results in a low hydrogen production rate. Herein, the synergistic effect of Mo-ion doping and the incorporation of Ni-based Hofmann-type coordination polymer (Ni-Ni HCP) on the photocatalytic performance of ZnIn₂S₄ (ZIS) is investigated. The hydrogen production rate of the prepared in-situ Mo doped ZnIn₂S₄ wrapped Ni-Ni HCP (Ni-Ni HCP/Mo-ZIS) sample under visible-light irradiation is 26.7 mmol g^-1h^-1, which is 10 times that of pure ZIS. Hydrogen production rate test, microscopic characterization, and density functional theory calculation confirm that the proposed dual modulation approach (combined ion doping and heterogeneous structure construction) could effectively increase the photocatalytic efficiency of ZIS. The stability of prepared samples is also examined by four-cycle photocatalytic hydrogen production tests. The proposed integrated method opens a new route for advancing renewable energy technology towards a sustainable future.

Keywords: Mo doping; Modified ZnIn(2)S(4); Ni–Ni HCP; Photocatalytic hydrogen evolution.