Facile hydrothermal synthesis of rod-like Nb2O5/Nb2CTx composites for visible-light driven photocatalytic degradation of organic pollutants

Ce Cui; Ronghui Guo; Erhui Ren; Hongyan Xiao; Xiaoxu Lai; Qin Qin; Shouxiang Jiang; Hong Shen; Mi Zhou; Wenfeng Qin

doi:10.1016/j.envres.2020.110587

Facile hydrothermal synthesis of rod-like Nb₂O₅/Nb₂CT_x composites for visible-light driven photocatalytic degradation of organic pollutants

Ce Cui
, Ronghui Guo
, Erhui Ren
, Hongyan Xiao
, Xiaoxu Lai
, Qin Qin
, Shouxiang Jiang
, Hong Shen
, Mi Zhou
, Wenfeng Qin

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

70 Citations (Scopus)

Abstract

The MXene-based transition metal oxide composite is a potential candidate for photocatalysts. Rod-like pseudohexagonal phase Nb₂O₅/Nb₂CT_x composites were synthesized by a simple hydrothermal oxidation of 2D layered Nb₂CT_x. The Nb₂O₅/Nb₂CT_x composites show superior photocatalytic activity for 98.5% of degradation of Rhodamine B (RhB) for 120 min and 91.2% of tetracycline hydrochloride (TC-HCl) for 180 min under visible light irradiation. The Schottky junction is formed between Nb₂O₅ nanorods and Nb₂CT_x and the photo-generated carriers are effectively separated, enhancing the photocatalytic activity of the Nb₂O₅/Nb₂CT_x. High photoactivity and cycle stability of Nb₂O₅/Nb₂CT_x composites indicate that hydrothermal oxidation of 2D layered Nb₂CT_x is an alternative to prepare efficient photocatalyst for degradation of organic pollutants.

Original language	English
Article number	110587
Journal	Environmental Research
Volume	193
DOIs	https://doi.org/10.1016/j.envres.2020.110587
Publication status	Published - Feb 2021

Keywords

Hydrothermal oxidation
NbCT
Organic pollutants
Photocatalytic degradation
Rod-like NbO/NbCT

ASJC Scopus subject areas

Biochemistry
General Environmental Science

More information

10.1016/j.envres.2020.110587

Cite this

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title = "Facile hydrothermal synthesis of rod-like Nb2O5/Nb2CTx composites for visible-light driven photocatalytic degradation of organic pollutants",

abstract = "The MXene-based transition metal oxide composite is a potential candidate for photocatalysts. Rod-like pseudohexagonal phase Nb2O5/Nb2CTx composites were synthesized by a simple hydrothermal oxidation of 2D layered Nb2CTx. The Nb2O5/Nb2CTx composites show superior photocatalytic activity for 98.5\% of degradation of Rhodamine B (RhB) for 120 min and 91.2\% of tetracycline hydrochloride (TC-HCl) for 180 min under visible light irradiation. The Schottky junction is formed between Nb2O5 nanorods and Nb2CTx and the photo-generated carriers are effectively separated, enhancing the photocatalytic activity of the Nb2O5/Nb2CTx. High photoactivity and cycle stability of Nb2O5/Nb2CTx composites indicate that hydrothermal oxidation of 2D layered Nb2CTx is an alternative to prepare efficient photocatalyst for degradation of organic pollutants.",

keywords = "Hydrothermal oxidation, NbCT, Organic pollutants, Photocatalytic degradation, Rod-like NbO/NbCT",

author = "Ce Cui and Ronghui Guo and Erhui Ren and Hongyan Xiao and Xiaoxu Lai and Qin Qin and Shouxiang Jiang and Hong Shen and Mi Zhou and Wenfeng Qin",

note = "Funding Information: This work was financially supported by The National Natural Science Foundation of China and The Civil Aviation Administration of China (NO. U1833118 ), Sichuan Science and Technology Program ( 2019YFG0244 ). Funding Information: This work was financially supported by The National Natural Science Foundation of China and The Civil Aviation Administration of China (NO. U1833118), Sichuan Science and Technology Program (2019YFG0244). Publisher Copyright: {\textcopyright} 2020 Elsevier Inc.",

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doi = "10.1016/j.envres.2020.110587",

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volume = "193",

journal = "Environmental Research",

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AU - Cui, Ce

AU - Guo, Ronghui

AU - Ren, Erhui

AU - Xiao, Hongyan

AU - Lai, Xiaoxu

AU - Qin, Qin

AU - Jiang, Shouxiang

AU - Shen, Hong

AU - Zhou, Mi

AU - Qin, Wenfeng

N1 - Funding Information: This work was financially supported by The National Natural Science Foundation of China and The Civil Aviation Administration of China (NO. U1833118 ), Sichuan Science and Technology Program ( 2019YFG0244 ). Funding Information: This work was financially supported by The National Natural Science Foundation of China and The Civil Aviation Administration of China (NO. U1833118), Sichuan Science and Technology Program (2019YFG0244). Publisher Copyright: © 2020 Elsevier Inc.

PY - 2021/2

Y1 - 2021/2

N2 - The MXene-based transition metal oxide composite is a potential candidate for photocatalysts. Rod-like pseudohexagonal phase Nb2O5/Nb2CTx composites were synthesized by a simple hydrothermal oxidation of 2D layered Nb2CTx. The Nb2O5/Nb2CTx composites show superior photocatalytic activity for 98.5% of degradation of Rhodamine B (RhB) for 120 min and 91.2% of tetracycline hydrochloride (TC-HCl) for 180 min under visible light irradiation. The Schottky junction is formed between Nb2O5 nanorods and Nb2CTx and the photo-generated carriers are effectively separated, enhancing the photocatalytic activity of the Nb2O5/Nb2CTx. High photoactivity and cycle stability of Nb2O5/Nb2CTx composites indicate that hydrothermal oxidation of 2D layered Nb2CTx is an alternative to prepare efficient photocatalyst for degradation of organic pollutants.

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