Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Efficient Photocatalytic Core/Shell of Titanate Nanowire/rGO

Xiaofang Ye
,
Yang Tian
ORCID logo ,
Mengyao Gao
,
Fangjun Cheng
,
Jinshen Lan
,
Han Chen
ORCID logo ,
Mark Lanoue
ORCID logo ,
Shengli Huang
* ,
Ryan Tian
*
Version 1 : Received: 26 February 2024 / Approved: 4 March 2024 / Online: 4 March 2024 (12:13:05 CET)

A peer-reviewed article of this Preprint also exists.

Ye, X.; Tian, Y.; Gao, M.; Cheng, F.; Lan, J.; Chen, H.; Lanoue, M.; Huang, S.; Tian, Z.R. Efficient Photocatalytic Core–Shell Synthesis of Titanate Nanowire/rGO. Catalysts 2024, 14, 218. Ye, X.; Tian, Y.; Gao, M.; Cheng, F.; Lan, J.; Chen, H.; Lanoue, M.; Huang, S.; Tian, Z.R. Efficient Photocatalytic Core–Shell Synthesis of Titanate Nanowire/rGO. Catalysts 2024, 14, 218.

Abstract

Wide bandgap semiconductors-based photocatalysts are usually limited by their low solar energy conversion efficiency due to their limited absorption solar wavelength, surface’s fast recombination of photoelectron–hole pairs and low charge-carrier mobility. Here we report a new stepwise solution synthesis for making a new photocatalytic core/shell of titanate nanowire/reduced graphene oxide shell (or titanate/rGO) 1D-nanocomposite. The new core/shell nanocomposite maximized the specific surface area, largely reduced the charge transfer resistance and reaction energy barrier, and significantly improved the absorption of the visible light. The core/shell nanocomposites’ large on/off current ratio and rapid photo-responses boosted the photocurrent by 30.0%, the photocatalysis rate by 50.0%, and the specific surface area by 16.4%, when comparing with the pure titanate nanowire core. Our numerical simulations support the effective charge separation on the new core-shell nanostructure, which can help further advance the new photocatalysis.

Keywords

Core-shell nanostructure; graphene; Titanate nanowire; photocatalysis, wide bandgap

Subject

Chemistry and Materials Science, Nanotechnology

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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