Synthesis of TiO2/g-C3N4 nanocomposites as efficient photocatalysts dependent on the enhanced photogenerated charge separation

Fazal Raziq, Chengming Li, Muhammad Humayun, Yang Qu, Amir Zada, Haitao Yu, Liqiang Jing

Research output: Contribution to journalArticlepeer-review

82 Scopus citations

Abstract

We have synthesized different mass ratios of effectively-contacted TiO2/bulk g-C3N4 composites (T/CN) by a wet chemical method, and evaluated their photocatalytic activities for degrading acetaldehyde and producing H2. It is clearly demonstrated by means of surface photovoltage responses and photoluminescence spectra that the photogenerated charge carriers in the T/CN nanocomposites with a proper mass ratio of T display much higher separation in comparison to CN alone. This is well responsible for the enhanced photocatalytic activities of CN after coupling with nanocrystalline anatase TiO2. Interestingly, it is also applicable to the resulting CN nanosheet (about 3 nm) with higher photoactivity than the bulk one. As a result, the TiO2/CN-nanosheet composites as efficient photocatalysts have been successfully developed. Moreover, it is confirmed that the enhanced photoactivity for resulting nanocomposites are attributed to the promoted charge transfer and separation from CN to TiO2.
Original languageEnglish (US)
Pages (from-to)494-499
Number of pages6
JournalMaterials Research Bulletin
Volume70
DOIs
StatePublished - May 25 2015
Externally publishedYes

ASJC Scopus subject areas

  • Mechanics of Materials
  • General Materials Science
  • Mechanical Engineering
  • Condensed Matter Physics

Fingerprint

Dive into the research topics of 'Synthesis of TiO2/g-C3N4 nanocomposites as efficient photocatalysts dependent on the enhanced photogenerated charge separation'. Together they form a unique fingerprint.

Cite this