Tailoring of ZnSe/GCN/MoS2 ternary heterojunction with enhanced photoelectrochemical activity for water oxidation

This research endeavor aims to fabricate a novel ternary heterojunction interface to enhance photoelectrochemical water Oxidation. ZnSe/GCN/MoS2 heterostructure series is prepared via the ultrasonication method. Confirmation of as-prepared heterostructures was done through FTIR, XRD, SEM, EDS, XPS,...

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Bibliographic Details
Published inSurfaces and interfaces Vol. 37; p. 102632
Main Authors Sitara, Effat, Nasir, Habib, Iram, Sadia, Bukhari, Syeda Aqsa Batool, Akhtar, Tehmina, Mumtaz, Sameena
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.04.2023
Subjects
Graphitic carbon nitride
MoS2
PEC water oxidation
Ternary heterostructures
Zinc selenide
Zinc selenide
PEC water oxidation
MoS2
Ternary heterostructures
Graphitic carbon nitride
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Summary:This research endeavor aims to fabricate a novel ternary heterojunction interface to enhance photoelectrochemical water Oxidation. ZnSe/GCN/MoS2 heterostructure series is prepared via the ultrasonication method. Confirmation of as-prepared heterostructures was done through FTIR, XRD, SEM, EDS, XPS, Raman, UV-DRS, and PL techniques. The best photoresponse among the ternary series was found for 1% ZnSe/GCN/MoS2 (1ZGM), showing the highest photocurrent density of 1.73 mA during linear sweep voltammetric studies. This is an increase of 7 times in the photoresponse than the pure GCN. These outcomes are reinforced by the EIS results, showing the smallest semicircle for 1ZGM in a Nyquist plot and an enhanced lifetime of 100.7 ms in a bode plot. The smallest Tafel slope, higher donor density, and reduced electron-hole recombination, suggest that a ternary heterojunction is successfully fabricated for PEC water oxidation.
ISSN:2468-0230
2468-0230
DOI:10.1016/j.surfin.2023.102632