MWCNT/WO3 nanocomposite photoanode for visible light induced water splitting

Samira Yousefzadeh; Ali Reyhani; Naimeh Naseri; Alireza Z. Moshfegh

doi:10.1016/j.jssc.2013.06.017

MWCNT/WO₃ nanocomposite photoanode for visible light induced water splitting

Samira Yousefzadeh
, Ali Reyhani
, Naimeh Naseri
, Alireza Z. Moshfegh

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

35 Citations (Scopus)

Abstract

The Multi-walled carbon nanotube (MWCNT)/WO₃ nanocomposite thin films with different MWCNT's weight percentages were prepared by sol-gel method as visible light induced photoanode in water splitting reaction. Weight percentage of MWCNT in the all nanocomposite thin films was confirmed by TGA/DSC analysis. According to XPS analysis, oxygenated groups at the surface of the MWCNT and stoichiometric formation of WO₃ thin films were determined, while the crystalline structure of the nanocomposite samples was studied by XRD indicating (0 0 2) peak of MWCNT in the monoclinic phase of WO₃. The influence of different weight percentage (wt%) of MWCNT on WO₃ photoactivity showed that the electron conductivity, charge transfer and electron life time had improved as compared with the pure WO₃. Based on linear sweep voltammetry and chronoamperometry measurements, the (1 wt%) MWCNT/WO₃ nanocomposite thin films photoanode has a maximum photocurrent density of ~4.5 A/m² and electron life time of about 57 s.

Original language	English
Pages (from-to)	341-347
Number of pages	7
Journal	Journal of Solid State Chemistry
Volume	204
DOIs	https://doi.org/10.1016/j.jssc.2013.06.017
Publication status	Published - 2013
Externally published	Yes

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Keywords

Electron life time
Functionalized MWCNT
Photoelectrochemical performance

Access to Document

10.1016/j.jssc.2013.06.017

Cite this

@article{2df41c0385dd4334b2c6dc05f543879f,

title = "MWCNT/WO3 nanocomposite photoanode for visible light induced water splitting",

abstract = "The Multi-walled carbon nanotube (MWCNT)/WO3 nanocomposite thin films with different MWCNT's weight percentages were prepared by sol-gel method as visible light induced photoanode in water splitting reaction. Weight percentage of MWCNT in the all nanocomposite thin films was confirmed by TGA/DSC analysis. According to XPS analysis, oxygenated groups at the surface of the MWCNT and stoichiometric formation of WO3 thin films were determined, while the crystalline structure of the nanocomposite samples was studied by XRD indicating (0 0 2) peak of MWCNT in the monoclinic phase of WO3. The influence of different weight percentage (wt\%) of MWCNT on WO3 photoactivity showed that the electron conductivity, charge transfer and electron life time had improved as compared with the pure WO3. Based on linear sweep voltammetry and chronoamperometry measurements, the (1 wt\%) MWCNT/WO3 nanocomposite thin films photoanode has a maximum photocurrent density of \textasciitilde{}4.5 A/m2 and electron life time of about 57 s.",

keywords = "Electron life time, Functionalized MWCNT, Photoelectrochemical performance",

author = "Samira Yousefzadeh and Ali Reyhani and Naimeh Naseri and Moshfegh, \{Alireza Z.\}",

note = "Funding Information: This work was financially supported by Research and Technology Council of Sharif University of Technology . The authors would like to thank Dr. Moradlou and Dr. Ghasempour for useful discussion and Mr. S Rafiee for XPS measurements and Mrs. Vaseghinia for AFM images.",

year = "2013",

doi = "10.1016/j.jssc.2013.06.017",

language = "English",

volume = "204",

pages = "341--347",

journal = "Journal of Solid State Chemistry",

issn = "0022-4596",

publisher = "Elsevier BV",

}

TY - JOUR

T1 - MWCNT/WO3 nanocomposite photoanode for visible light induced water splitting

AU - Yousefzadeh, Samira

AU - Reyhani, Ali

AU - Naseri, Naimeh

AU - Moshfegh, Alireza Z.

N1 - Funding Information: This work was financially supported by Research and Technology Council of Sharif University of Technology . The authors would like to thank Dr. Moradlou and Dr. Ghasempour for useful discussion and Mr. S Rafiee for XPS measurements and Mrs. Vaseghinia for AFM images.

PY - 2013

Y1 - 2013

N2 - The Multi-walled carbon nanotube (MWCNT)/WO3 nanocomposite thin films with different MWCNT's weight percentages were prepared by sol-gel method as visible light induced photoanode in water splitting reaction. Weight percentage of MWCNT in the all nanocomposite thin films was confirmed by TGA/DSC analysis. According to XPS analysis, oxygenated groups at the surface of the MWCNT and stoichiometric formation of WO3 thin films were determined, while the crystalline structure of the nanocomposite samples was studied by XRD indicating (0 0 2) peak of MWCNT in the monoclinic phase of WO3. The influence of different weight percentage (wt%) of MWCNT on WO3 photoactivity showed that the electron conductivity, charge transfer and electron life time had improved as compared with the pure WO3. Based on linear sweep voltammetry and chronoamperometry measurements, the (1 wt%) MWCNT/WO3 nanocomposite thin films photoanode has a maximum photocurrent density of ~4.5 A/m2 and electron life time of about 57 s.

AB - The Multi-walled carbon nanotube (MWCNT)/WO3 nanocomposite thin films with different MWCNT's weight percentages were prepared by sol-gel method as visible light induced photoanode in water splitting reaction. Weight percentage of MWCNT in the all nanocomposite thin films was confirmed by TGA/DSC analysis. According to XPS analysis, oxygenated groups at the surface of the MWCNT and stoichiometric formation of WO3 thin films were determined, while the crystalline structure of the nanocomposite samples was studied by XRD indicating (0 0 2) peak of MWCNT in the monoclinic phase of WO3. The influence of different weight percentage (wt%) of MWCNT on WO3 photoactivity showed that the electron conductivity, charge transfer and electron life time had improved as compared with the pure WO3. Based on linear sweep voltammetry and chronoamperometry measurements, the (1 wt%) MWCNT/WO3 nanocomposite thin films photoanode has a maximum photocurrent density of ~4.5 A/m2 and electron life time of about 57 s.

KW - Electron life time

KW - Functionalized MWCNT

KW - Photoelectrochemical performance

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U2 - 10.1016/j.jssc.2013.06.017

DO - 10.1016/j.jssc.2013.06.017

M3 - Article

AN - SCOPUS:84885610051

SN - 0022-4596

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