Issue 35, 2023

Hydrogen production and degradation of organic pollutants catalyzed by C/Ti3C2/g-C3N4 hollow microsphere Schottky junctions with a built-in electric field in organic wastewater

Abstract

C/Ti3C2/g-C3N4 hollow microspheres (HM) were prepared by the template method to construct Ti3C2/g-C3N4 Schottky junctions on the spherical surface. The C/Ti3C2/g-C3N4 HM Schottky junctions presented excellent photocatalytic properties for producing hydrogen and decomposing organic pollutants simultaneously from wastewater without the addition of a sacrifice agent. The research revealed that the built-in electric field between g-C3N4 and Ti3C2 MXene could decrease the charge transfer resistance, leading to efficient photo charge separation, and the organic pollutant tetracycline (TC) could act as a sacrifice agent for splitting water. The H2 evolution rate of the CN-TCM-3 sample in deionized water with a sacrifice agent reached 105.4 μmol g−1 h−1, and the TC removal rate reached 100% within 120 min. The hydrogen production efficiency of CN-TCM-3 in the natural water of Slender West Lake without or with TC as a sacrifice agent was 2.3 μmol g−1 h−1 and 3.2 μmol g−1 h−1, respectively. The addition of TC improved the hydrogen production efficiency by 39%. This research indicated that the C/Ti3C2/g-C3N4 HM Schottky junctions could be a potential photocatalyst for producing hydrogen and decomposing organic pollutants in sewage simultaneously.

Graphical abstract: Hydrogen production and degradation of organic pollutants catalyzed by C/Ti3C2/g-C3N4 hollow microsphere Schottky junctions with a built-in electric field in organic wastewater

Supplementary files

Article information

Article type
Paper
Submitted
28 jun 2023
Accepted
08 aug 2023
First published
09 aug 2023

New J. Chem., 2023,47, 16345-16352

Hydrogen production and degradation of organic pollutants catalyzed by C/Ti3C2/g-C3N4 hollow microsphere Schottky junctions with a built-in electric field in organic wastewater

X. Qin, L. Ji and A. Zhu, New J. Chem., 2023, 47, 16345 DOI: 10.1039/D3NJ03007E

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