Preparation and photocatalytic activity of BiOX–TiO2 composite films (X=Cl, Br, I)

Yang, Jing; Wang, Xixin; Lv, Xiaowei; Xu, Xingru; Mi, Yingjuan; Zhao, Jianling

doi:10.1016/j.ceramint.2014.01.077

Cited by 33 publications

(8 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Degradation rates as low as 30% in 15 h for of azo dyes have been reported using TiO 2 -InVO 4 thin films [66], although the efficiency can be improved by the deposition of noble metal nanoparticles on the film surface. Conversely, in other study [67], the complete degradation of methyl orange was achieved in 8 h of visible light irradiation by using BiOCl-TiO 2 thin films. This study reveals the importance of the charge carrier transference in the immobilized photocatalyst material.…”

Section: Photocatalytic Activity Of Tio 2 -Based Heterostructures Undmentioning

confidence: 78%

TiO2-Low Band Gap Semiconductor Heterostructures for Water Treatment Using Sunlight-Driven Photocatalysis

Angel¹,

Durán–Álvarez²,

Zanella³

2018

Titanium Dioxide - Material for a Sustainable Environment

View full text Add to dashboard Cite

Heterogeneous photocatalysis is a promising advanced oxidation process for water purification, given its potential to fully oxidize organic pollutants and to inactivate microorganisms. Due to its versatility and high performance in a broad range of conditions, titanium dioxide (TiO 2)-based photocatalysis has been systematically used at laboratory scale to treat water of different quality. Even though TiO 2 is an exceptional photocatalyst, its broad band gap value (3.2 eV) makes necessary the use of UV light to achieve the photoactivation. This results in the underutilization of the material in sunlight-driven photocatalysis schemes. In order to overcome this handicap, the synthesis of heterostructures using low band gap semiconductors coupled with TiO 2 has brought exceptional materials for visible light-driven photocatalysis. In this chapter, the fundamentals of the synthesis and photoactivation of TiO 2-low band gap semiconductor heterostructures are explored. The mechanisms leading to the increase of the photocatalytic activity of such heterostructures are described. A summary of the available data on the photocatalytic performance of TiO 2-based heterostructures is presented, in terms of degradation of organic pollutants in water using visible light and sunlight. A comparison of the depuration performance of powdered and thin film heterostructures is given at the end of the chapter.

show abstract

Section: Photocatalytic Activity Of Tio 2 -Based Heterostructures Undmentioning

confidence: 78%

TiO2-Low Band Gap Semiconductor Heterostructures for Water Treatment Using Sunlight-Driven Photocatalysis

Angel¹,

Durán–Álvarez²,

Zanella³

2018

Titanium Dioxide - Material for a Sustainable Environment

View full text Add to dashboard Cite

show abstract

“…3.1. Characterisation: For BiOX, it is well known that two major crystal planes of (110) and (102) matched with the [Bi 2 O 2 ] 2+ and X − slabs structure, respectively [15]. The difference of halogen ions radius makes the corresponding crystalline interplanar spacing and the diffraction angles different.…”

Section: Resultsmentioning

confidence: 99%

“…As far as we know, there are abundant reports about BiOX/TiO 2 films and its applications on photocatalysis. However, the reported BiOX/TiO 2 materials were the composite materials of BiOX with one or two halogen elements and TiO 2 [14][15][16][17][18][19].…”

mentioning

confidence: 99%

New BiOXs/TiO ₂ heterojunction photocatalyst towards efficient degradation of organic pollutants under visible‐light irradiation

Song

Wang

et al. 2019

Micro & Nano Letters

View full text Add to dashboard Cite

A new heterojunction BiOXs/TiO 2 photocatalyst was firstly prepared by a mixed solvothermal method. Several tools were used to characterise the structure and morphologies of as-obtained samples. The results of photocatalytic experiments indicated that flower-like BiOXs/TiO 2 fabricated by the thinner nanosheets exhibited excellent degradation properties towards methyl orange, bisphenol A and tetracycline under visible-light irradiation. The reasons could be the good absorption of organic pollutants and light, and the high separation efficiency of photogenic electrons and holes attributed to the construction of BiOXs/TiO 2 heterojunction with large special surface areas. The photocatalytic mechanism was proposed. This Letter could provide new ideas to design the visible-light catalysts.

show abstract

“…As one of the many well-known types of semiconductor materials, bismuth iodide oxide (Bi x O y I z ) is a promising visible light responsive photocatalyst with narrow band gap, excellent photocatalytic performance, and good stability [8]. Bi x O y I z has a particular alternating layer crystal structure with interleaved [Bi 2 O 2 ] 2+ layers, which provides an interior electrostatic field vertical to each layer and enhances the separation of photogenerated carriers [9]. The variations in the x, y, and z ratios lead to a significant difference in the photocatalytic property of Bi x O y I z .…”

Section: Introductionmentioning

confidence: 99%

ZnO@Bi5O7I Heterojunction Derived from ZIF-8@BiOI for Enhanced Photocatalytic Activity under Visible Light

Tang

Duan

et al. 2022

Materials

View full text Add to dashboard Cite

In the study, ZIF-8@BIOI composites were synthesized by the hydrothermal method and then calcined to acquire the ZnO@Bi5O7I composite as a novel composite for the photocatalytic deterioration of the antibiotic tetracycline (TC). The prepared ZnO@Bi5O7I composites were physically and chemically characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), Brunauer–Emmet–Teller (BET) surface area, UV–Vis diffuse reflectance spectroscopy (DRS), emission fluorescence spectra, transient photocurrent response, electrochemical impedance spectra and Mott–Schottky. Among the composites formed an n–n heterojunction, which increased the separation efficiency of electrons and holes and the efficiency of charge transfer. After the photocatalytic degradation test of TC, it showed that ZnO@Bi5O7I (2:1) had the best photodegradation effect with an 86.2% removal rate, which provides a new approach to the treatment of antibiotics such as TC in wastewater.

show abstract

Preparation and photocatalytic activity of BiOX–TiO2 composite films (X=Cl, Br, I)

Cited by 33 publications

References 20 publications

TiO2-Low Band Gap Semiconductor Heterostructures for Water Treatment Using Sunlight-Driven Photocatalysis

TiO2-Low Band Gap Semiconductor Heterostructures for Water Treatment Using Sunlight-Driven Photocatalysis

New BiOXs/TiO ₂ heterojunction photocatalyst towards efficient degradation of organic pollutants under visible‐light irradiation

ZnO@Bi5O7I Heterojunction Derived from ZIF-8@BiOI for Enhanced Photocatalytic Activity under Visible Light

Contact Info

Product

Resources

About

Preparation and photocatalytic activity of BiOX–TiO2 composite films (X=Cl, Br, I)

Cited by 33 publications

References 20 publications

TiO2-Low Band Gap Semiconductor Heterostructures for Water Treatment Using Sunlight-Driven Photocatalysis

TiO2-Low Band Gap Semiconductor Heterostructures for Water Treatment Using Sunlight-Driven Photocatalysis

New BiOXs/TiO 2 heterojunction photocatalyst towards efficient degradation of organic pollutants under visible‐light irradiation

ZnO@Bi5O7I Heterojunction Derived from ZIF-8@BiOI for Enhanced Photocatalytic Activity under Visible Light

Contact Info

Product

Resources

About

New BiOXs/TiO ₂ heterojunction photocatalyst towards efficient degradation of organic pollutants under visible‐light irradiation