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Fabrication of TiO on Porous G-CN by ALD for Improved Solar-driven Hydrogen Evolution

Overview
Journal RSC Adv
Publisher Royal Society of Chemistry
Specialty Chemistry
Date 2022 May 13
PMID 35548760
Authors
Wei-Szu Liu
Li-Chen Wang
Tzu-Kang Chin
Yin-Cheng Yen
Tsong-Pyng Perng
Affiliations
Soon will be listed here.
Abstract

Porous graphitic carbon nitride (P-g-CN) thin sheets were fabricated by a one-step calcination of a mixture of urea, melamine, and ammonia chloride at 550 °C. P-g-CN showed 48% higher photocatalytic H production from methanol aqueous solution than conventional urea-derived graphitic carbon nitride (g-CN) because the existence of numerous pores reduces the recombination rate of charge carriers. In order to further enhance the photocatalytic activity, TiO was uniformly deposited on P-g-CN by 60-300 cycles of atomic layer deposition (ALD) to form the TiO@P-g-CN composite. They exhibited much higher photocatalytic hydrogen production rates than both TiO and P-g-CN. Among all composites, the sample deposited with 180 ALD cycles of TiO showed the highest H production because of optimal diffusion length for electrons and holes. It also performed better than the sample of g-CN deposited with 180 cycles of TiO.

Citing Articles

Highly Mesoporous g-CN with Uniform Pore Size Distribution via the Template-Free Method to Enhanced Solar-Driven Tetracycline Degradation.

Phoon B, Lai C, Pan G, Yang T, Juan J Nanomaterials (Basel). 2021; 11(8).

PMID: 34443873 PMC: 8398958. DOI: 10.3390/nano11082041.

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