A visible light active, carbon-nitrogen-sulfur co-doped TiO2/g-C3N4Z-scheme heterojunction as an effective photocatalyst to remove dye pollutants

Zhen Huang, Shuai Jia, Jie Wei, Ziqiang Shao*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Citations (Scopus)

Abstract

Heterojunction formation and heteroatom doping could be viewed as promising strategies for constructing composite photocatalysts with high visible light catalytic activity. In this work, we fabricated a carbon, nitrogen and sulfur co-doped TiO2/g-C3N4 (CNS-TiO2/g-C3N4) Z-scheme heterojunction photocatalyst composite via one-step hydrothermal and calcination methods. Compared with pure TiO2 and g-C3N4, the CNS-TiO2/g-C3N4 Z-scheme heterojunction photocatalyst possessed excellent degradation performance under visible light irradiation. Due to the formation of the Z-scheme heterostructure, the utilization rate of the photogenerated electrons-holes generated by the catalyst was increased, which enhanced the catalytic activity. Moreover, the heteroatom doping (C, N and S) could efficiently tailor the band gap of TiO2 and facilitate electron transition, contributing to enhancing the degradation ability under visible light. The CNS-TiO2/g-C3N4-2 exhibited a superior photocatalytic degradation efficiency (k = 0.069 min-1) for methyl orange dye (MO), which is higher than those of pure TiO2 (k = 0.001 min-1) and g-C3N4 (k = 0.012 min-1), showing excellent photocatalytic activity against organic pollutants.

Original languageEnglish
Pages (from-to)16747-16754
Number of pages8
JournalRSC Advances
Volume11
Issue number27
DOIs
Publication statusPublished - 6 Apr 2021

Fingerprint

Dive into the research topics of 'A visible light active, carbon-nitrogen-sulfur co-doped TiO2/g-C3N4Z-scheme heterojunction as an effective photocatalyst to remove dye pollutants'. Together they form a unique fingerprint.

Cite this