A novel Z-scheme WO3/CdWO4 photocatalyst with enhanced visible-light photocatalytic activity for the degradation of organic pollutants

Imran Aslam; Chuanbao Cao; M. Tanveer; M. Hassan Farooq; Waheed S. Khan; Muhammad Tahir; Faryal Idrees; Syed Khalid

doi:10.1039/c4ra15847d

A novel Z-scheme WO₃/CdWO₄ photocatalyst with enhanced visible-light photocatalytic activity for the degradation of organic pollutants

Imran Aslam, Chuanbao Cao^*, M. Tanveer, M. Hassan Farooq, Waheed S. Khan, Muhammad Tahir, Faryal Idrees, Syed Khalid

^*Corresponding author for this work

School of Material Science and Engineering

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

106 Citations (Scopus)

Abstract

A novel Z-scheme WO₃/CdWO₄ photocatalyst has been fabricated with sheet-like tungsten trioxide (WO₃) hybridized by rod-like cadmium tungstate (CdWO₄) via a hydrothermal and chemisorption method. The as-synthesized WO₃/CdWO₄ photocatalyst exhibited enhanced photocatalytic efficiency for the degradation of different organic dyes under visible light irradiation. It was found that the photocatalytic performance of the composite WO₃/CdWO₄ was much higher than that of either WO₃ or CdWO₄ for the degradation of each organic dye. The highest activity of the composite was recorded for the degradation of MB which was about 7 times greater than pure CdWO₄ and 2.3 times that of pure WO₃. The enhanced performance of the photocatalyst was mainly attributed to the increased surface area and introduction of WO₃ into the composite sample, which can induce higher adsorption activity for organic dyes and increased electron-hole separation at the interface between two semiconductors by establishing an inner electric field.

Original language	English
Pages (from-to)	6019-6026
Number of pages	8
Journal	RSC Advances
Volume	5
Issue number	8
DOIs	https://doi.org/10.1039/c4ra15847d
Publication status	Published - 2015

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title = "A novel Z-scheme WO3/CdWO4 photocatalyst with enhanced visible-light photocatalytic activity for the degradation of organic pollutants",

abstract = "A novel Z-scheme WO3/CdWO4 photocatalyst has been fabricated with sheet-like tungsten trioxide (WO3) hybridized by rod-like cadmium tungstate (CdWO4) via a hydrothermal and chemisorption method. The as-synthesized WO3/CdWO4 photocatalyst exhibited enhanced photocatalytic efficiency for the degradation of different organic dyes under visible light irradiation. It was found that the photocatalytic performance of the composite WO3/CdWO4 was much higher than that of either WO3 or CdWO4 for the degradation of each organic dye. The highest activity of the composite was recorded for the degradation of MB which was about 7 times greater than pure CdWO4 and 2.3 times that of pure WO3. The enhanced performance of the photocatalyst was mainly attributed to the increased surface area and introduction of WO3 into the composite sample, which can induce higher adsorption activity for organic dyes and increased electron-hole separation at the interface between two semiconductors by establishing an inner electric field.",

author = "Imran Aslam and Chuanbao Cao and M. Tanveer and Farooq, {M. Hassan} and Khan, {Waheed S.} and Muhammad Tahir and Faryal Idrees and Syed Khalid",

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year = "2015",

doi = "10.1039/c4ra15847d",

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AU - Aslam, Imran

AU - Cao, Chuanbao

AU - Tanveer, M.

AU - Farooq, M. Hassan

AU - Khan, Waheed S.

AU - Tahir, Muhammad

AU - Idrees, Faryal

AU - Khalid, Syed

PY - 2015

Y1 - 2015

N2 - A novel Z-scheme WO3/CdWO4 photocatalyst has been fabricated with sheet-like tungsten trioxide (WO3) hybridized by rod-like cadmium tungstate (CdWO4) via a hydrothermal and chemisorption method. The as-synthesized WO3/CdWO4 photocatalyst exhibited enhanced photocatalytic efficiency for the degradation of different organic dyes under visible light irradiation. It was found that the photocatalytic performance of the composite WO3/CdWO4 was much higher than that of either WO3 or CdWO4 for the degradation of each organic dye. The highest activity of the composite was recorded for the degradation of MB which was about 7 times greater than pure CdWO4 and 2.3 times that of pure WO3. The enhanced performance of the photocatalyst was mainly attributed to the increased surface area and introduction of WO3 into the composite sample, which can induce higher adsorption activity for organic dyes and increased electron-hole separation at the interface between two semiconductors by establishing an inner electric field.

AB - A novel Z-scheme WO3/CdWO4 photocatalyst has been fabricated with sheet-like tungsten trioxide (WO3) hybridized by rod-like cadmium tungstate (CdWO4) via a hydrothermal and chemisorption method. The as-synthesized WO3/CdWO4 photocatalyst exhibited enhanced photocatalytic efficiency for the degradation of different organic dyes under visible light irradiation. It was found that the photocatalytic performance of the composite WO3/CdWO4 was much higher than that of either WO3 or CdWO4 for the degradation of each organic dye. The highest activity of the composite was recorded for the degradation of MB which was about 7 times greater than pure CdWO4 and 2.3 times that of pure WO3. The enhanced performance of the photocatalyst was mainly attributed to the increased surface area and introduction of WO3 into the composite sample, which can induce higher adsorption activity for organic dyes and increased electron-hole separation at the interface between two semiconductors by establishing an inner electric field.

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A novel Z-scheme WO₃/CdWO₄ photocatalyst with enhanced visible-light photocatalytic activity for the degradation of organic pollutants

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