Acidification and bubble template derived porous g-C3N4 for efficient photodegradation and hydrogen evolution

Document Type

Journal Article

Publication Title

Chinese Chemical Letters

ISSN

10018417

First Page

2668

Last Page

2672

Publisher

Elsevier

School

School of Engineering

RAS ID

32895

Funders

National Science and Technology Major Project China Scholarship Council

Comments

Wang, Y., He, F., Chen, L., Shang, J., Wang, J., Wang, S., ... Sun, H. (2020). Acidification and bubble template derived porous g-C3N4 for efficient photodegradation and hydrogen evolution. Chinese Chemical Letters, 31(10), 2668-2672. https://doi.org/10.1016/j.cclet.2020.08.003

Abstract

© 2020 Graphitic carbon nitride (g-C3N4) as a metal-free candidate of photocatalyst has received worldwide attention because of its great potentials in solar light-induced degradation and hydrogen evolution, yet the industrial application is seriously hindered by the small specific surface area and rapid recombination rate of carriers. Herein, we demonstrate that porous g-C3N4 (HCl-CNU-X) can be prepared via the co-polymerization of acidified melamine and a green bubble template (urea). Transmission electron microscopy and nitrogen sorption characterization results show that the prepared HCl-CNU-X possesses an in-plane porous structure and large specific surface area, enabling the exposure of more accessible active sites. As a result, HCl-CNU-X exhibits both enhanced photocatalytic tetracycline hydrochloride degradation and higher hydrogen evolution than bulk g-C3N4. The boosted photocatalytic performance was ascribed to the formation of the porous structure, which dramatically promotes the separation of charge-carriers and facilitates the electron transfer. This work demonstrates that the acidification of nitrogen-rich precursors combined with a bubble-template can develop a new paradigm of highly porous photocatalysts for environmental remediation and water splitting.

DOI

10.1016/j.cclet.2020.08.003

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