Issue 5, 2022

Mo-Doped/Ni-supported ZnIn2S4-wrapped NiMoO4 S-scheme heterojunction photocatalytic reforming of lignin into hydrogen

Abstract

The photocatalytic reforming of lignin for H2 evolution can simultaneously overcome environmental and energy issues. However, the photocatalytic activity is still far from useful, considering lignin's complex structure. Therefore, this poses a huge challenge for the design of photocatalysts via ingredient/heterojunction regulation synergistic effects. Herein, in situ Mo-doped and metallic Ni-supported ZnIn2S4-wrapped NiMoO4 step-scheme (S-scheme) heterojunctions (NMO@M–ZIS–N) were developed via a reduction strategy assisted by thermal dissolution. The introduction of NMO can significantly inhibit the agglomeration of ZIS and expose more active sites. The close contact of the two phases helps to form a S-scheme heterojunction, which effectively promotes the separation and transport of photogenerated electron–hole pairs. Due to its unique structural design, the optimal hybrid heterojunction can exhibit excellent photocatalytic hydrogen evolution reaction (HER) activity (5.14 mmol h−1 g−1 for TEOA and 0.53 mmol h−1 g−1 for lignin). The superior photocatalytic performance can be mainly attributed to the synergistic effect of S-scheme heterojunctions coupled with Mo doping and metallic Ni supports to broaden the light absorption, enhance the kinetic process of charge transport, and retain strong redox ability, thereby promoting the photocatalytic HER activity.

Graphical abstract: Mo-Doped/Ni-supported ZnIn2S4-wrapped NiMoO4 S-scheme heterojunction photocatalytic reforming of lignin into hydrogen

Associated articles

Supplementary files

Article information

Article type
Paper
Submitted
25 Nov 2021
Accepted
21 Jan 2022
First published
27 Jan 2022

Green Chem., 2022,24, 2027-2035

Mo-Doped/Ni-supported ZnIn2S4-wrapped NiMoO4 S-scheme heterojunction photocatalytic reforming of lignin into hydrogen

H. Su, C. Rao, L. Zhou, Y. Pang, H. Lou, D. Yang and X. Qiu, Green Chem., 2022, 24, 2027 DOI: 10.1039/D1GC04397H

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements