Construction of II-type and Z-scheme binding structure in P-doped graphitic carbon nitride loaded with ZnO and ZnTCPP boosting photocatalytic hydrogen evolution

Xuan Xu; Xiangbo Feng; Wei Wang; Kunli Song; Dandan Ma; Yixuan Zhou; Jian-Wen Shi

doi:10.1016/j.jcis.2023.08.033

Construction of II-type and Z-scheme binding structure in P-doped graphitic carbon nitride loaded with ZnO and ZnTCPP boosting photocatalytic hydrogen evolution

J Colloid Interface Sci. 2023 Dec:651:669-677. doi: 10.1016/j.jcis.2023.08.033. Epub 2023 Aug 6.

Authors

Xuan Xu¹, Xiangbo Feng², Wei Wang³, Kunli Song⁴, Dandan Ma⁴, Yixuan Zhou⁴, Jian-Wen Shi⁵

Affiliations

¹ Xi'an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi'an 710123, Shaanxi, China; State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China.
² Xi'an Key Laboratory of Advanced Photo-electronics Materials and Energy Conversion Device, School of Electronic Information, Xijing University, Xi'an 710123, Shaanxi, China. Electronic address: fengxiangbo@xjtu.edu.cn.
³ Market Department, China Construction Third Bureau Green Industry Investment Co. Ltd, Wuhan 430056, China.
⁴ State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China.
⁵ State Key Laboratory of Electrical Insulation and Power Equipment, Center of Nanomaterials for Renewable Energy, School of Electrical Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China. Electronic address: jianwen.shi@mail.xjtu.edu.cn.

PMID: 37562308
DOI: 10.1016/j.jcis.2023.08.033

Abstract

A ternary heterostructure (ZnPPO) was constructed by loading ZnO and tetrakis (4-carboxyphenyl) zinc porphyrin (ZnTCPP) with P-doped g-C₃N₄ (PCN). In contrast to binary heterostructures (PCN-ZnO, ZnTCPP-ZnO and ZnTCPP-PCN) and single components (PCN, ZnTCPP and ZnO), ZnPPO has superior photocatalytic activity for H₂ generation from water splitting. It is revealed that a binding structure of Ⅱ-type and Z-scheme has been constructed in ZnPPO, which plays a vital role in transferring photo-excited charge carriers. The significant enhancement of photocatalytic activity in ZnPPO is attributed to the effective transfer of photo-generated electrons and holes between the components of the ternary heterostructure.

Keywords: H(2) generation; Photocatalysis; Ternary heterostructure; Water splitting; g-C(3)N(4).