Metal organic framework-derived C-doped ZnO/TiO2 nanocomposite catalysts for enhanced photodegradation of Rhodamine B

Yingming Wang; Xiaoxiao Liu; Lin Guo; Linqing Shang; Shengsong Ge; Gang Song; Nithesh Naik; Qian Shao; Jing Lin; Zhanhu Guo

doi:10.1016/j.jcis.2021.03.167

Metal organic framework-derived C-doped ZnO/TiO₂ nanocomposite catalysts for enhanced photodegradation of Rhodamine B

Yingming Wang, Xiaoxiao Liu, Lin Guo, Linqing Shang, Shengsong Ge, Gang Song, Nithesh Naik, Qian Shao, Jing Lin, Zhanhu Guo

Department of Mechanical & Industrial Engineering Manipal Institute of Technology, Manipal

Research output: Contribution to journal › Article › peer-review

45 Citations (Scopus)

Abstract

A series of C-doped ZnO/TiO₂ composites with various molar ratios of ZnO to TiO₂ were synthesized by one-step controllable pyrolysis of Zn/Ti bimetallic metal-organic frameworks (Zn/Ti-MOF). The Zn/Ti-MOF was prepared using a facile microwave hydrothermal method. Electron microscopic analysis proved that the composites presented regularity cubic morphology with an edge length of about 1 μm and the C atoms were successfully doped into ZnO/TiO₂ composites. X-ray photoelectron spectroscopy (XPS) measurement results confirmed the C-doping in the ZnO/TiO_2. Comparative experimental studies showed that 2% ZnO/TiO₂ composites prepared with the calcination temperature of 600℃ displayed the best photocatalytic degradation efficiency (94%) of RhB under the simulated sunlight irradiation. Cyclical experiment indicated the high stability and reusability of 2% ZnO/TiO₂ composites. Electron spin resonance (ESR) and trapping experiments illustrated that the produced ^[rad]O₂⁻ served as the main active species for the efficient RhB removal. This work provides an efficient way for preparing C-doped bimetal oxides composites, which would have an important application prospect in the photocatalytic degradation of organic pollutants in environmental water.

Original language	English
Pages (from-to)	566-576
Number of pages	11
Journal	Journal of Colloid and Interface Science
Volume	599
DOIs	https://doi.org/10.1016/j.jcis.2021.03.167
Publication status	Published - 10-2021

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Biomaterials
Surfaces, Coatings and Films
Colloid and Surface Chemistry

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10.1016/j.jcis.2021.03.167

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title = "Metal organic framework-derived C-doped ZnO/TiO2 nanocomposite catalysts for enhanced photodegradation of Rhodamine B",

abstract = "A series of C-doped ZnO/TiO2 composites with various molar ratios of ZnO to TiO2 were synthesized by one-step controllable pyrolysis of Zn/Ti bimetallic metal-organic frameworks (Zn/Ti-MOF). The Zn/Ti-MOF was prepared using a facile microwave hydrothermal method. Electron microscopic analysis proved that the composites presented regularity cubic morphology with an edge length of about 1 μm and the C atoms were successfully doped into ZnO/TiO2 composites. X-ray photoelectron spectroscopy (XPS) measurement results confirmed the C-doping in the ZnO/TiO2. Comparative experimental studies showed that 2% ZnO/TiO2 composites prepared with the calcination temperature of 600℃ displayed the best photocatalytic degradation efficiency (94%) of RhB under the simulated sunlight irradiation. Cyclical experiment indicated the high stability and reusability of 2% ZnO/TiO2 composites. Electron spin resonance (ESR) and trapping experiments illustrated that the produced [rad]O2− served as the main active species for the efficient RhB removal. This work provides an efficient way for preparing C-doped bimetal oxides composites, which would have an important application prospect in the photocatalytic degradation of organic pollutants in environmental water.",

author = "Yingming Wang and Xiaoxiao Liu and Lin Guo and Linqing Shang and Shengsong Ge and Gang Song and Nithesh Naik and Qian Shao and Jing Lin and Zhanhu Guo",

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doi = "10.1016/j.jcis.2021.03.167",

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T1 - Metal organic framework-derived C-doped ZnO/TiO2 nanocomposite catalysts for enhanced photodegradation of Rhodamine B

AU - Wang, Yingming

AU - Liu, Xiaoxiao

AU - Guo, Lin

AU - Shang, Linqing

AU - Ge, Shengsong

AU - Song, Gang

AU - Naik, Nithesh

AU - Shao, Qian

AU - Lin, Jing

AU - Guo, Zhanhu

PY - 2021/10

Y1 - 2021/10

N2 - A series of C-doped ZnO/TiO2 composites with various molar ratios of ZnO to TiO2 were synthesized by one-step controllable pyrolysis of Zn/Ti bimetallic metal-organic frameworks (Zn/Ti-MOF). The Zn/Ti-MOF was prepared using a facile microwave hydrothermal method. Electron microscopic analysis proved that the composites presented regularity cubic morphology with an edge length of about 1 μm and the C atoms were successfully doped into ZnO/TiO2 composites. X-ray photoelectron spectroscopy (XPS) measurement results confirmed the C-doping in the ZnO/TiO2. Comparative experimental studies showed that 2% ZnO/TiO2 composites prepared with the calcination temperature of 600℃ displayed the best photocatalytic degradation efficiency (94%) of RhB under the simulated sunlight irradiation. Cyclical experiment indicated the high stability and reusability of 2% ZnO/TiO2 composites. Electron spin resonance (ESR) and trapping experiments illustrated that the produced [rad]O2− served as the main active species for the efficient RhB removal. This work provides an efficient way for preparing C-doped bimetal oxides composites, which would have an important application prospect in the photocatalytic degradation of organic pollutants in environmental water.

AB - A series of C-doped ZnO/TiO2 composites with various molar ratios of ZnO to TiO2 were synthesized by one-step controllable pyrolysis of Zn/Ti bimetallic metal-organic frameworks (Zn/Ti-MOF). The Zn/Ti-MOF was prepared using a facile microwave hydrothermal method. Electron microscopic analysis proved that the composites presented regularity cubic morphology with an edge length of about 1 μm and the C atoms were successfully doped into ZnO/TiO2 composites. X-ray photoelectron spectroscopy (XPS) measurement results confirmed the C-doping in the ZnO/TiO2. Comparative experimental studies showed that 2% ZnO/TiO2 composites prepared with the calcination temperature of 600℃ displayed the best photocatalytic degradation efficiency (94%) of RhB under the simulated sunlight irradiation. Cyclical experiment indicated the high stability and reusability of 2% ZnO/TiO2 composites. Electron spin resonance (ESR) and trapping experiments illustrated that the produced [rad]O2− served as the main active species for the efficient RhB removal. This work provides an efficient way for preparing C-doped bimetal oxides composites, which would have an important application prospect in the photocatalytic degradation of organic pollutants in environmental water.

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Metal organic framework-derived C-doped ZnO/TiO₂ nanocomposite catalysts for enhanced photodegradation of Rhodamine B

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