Room-temperature synthesis of TiO2 nanospheres and their solar driven photoelectrochemical hydrogen production

Vidya Avasare; Zhongai Zhang; Dnyaneshwar Avasare; Ibrahim Khan; Ahsanulhaq Qurashi

doi:10.1002/er.3372

Room-temperature synthesis of TiO₂ nanospheres and their solar driven photoelectrochemical hydrogen production

Vidya Avasare, Zhongai Zhang, Dnyaneshwar Avasare, Ibrahim Khan, Ahsanulhaq Qurashi

Research output: Journal Publication › Article › peer-review

48 Citations (Scopus)

Abstract

Highly monodisperse and crystalline anatase phase TiO₂ nanospheres have been synthesized at room temperature from organometallic precursor, titanocene dichloride and sodium azide. The photoelectrochemical (PEC) water splitting performance on the TiO₂ nanospheres was studied under illumination of AM 1.5G. The optimized photocurrent density and photoconversion efficiency of TiO₂ NSPs were observed ~0.95mAcm^-2 at 1.23V and 0.69%, respectively. The transient photocurrent response measurements on the TiO₂ NSPs during repeated ON/OFF visible light illumination cycles at 1.23V vs RHE show that both samples exhibited fast and reproducible photocurrent responses. The TiO₂ NSPs show excellent catalytic stability, and significant dark current was not observed even at high potentials (2.0V vs RHE).

Original language	English
Pages (from-to)	1714-1719
Number of pages	6
Journal	International Journal of Energy Research
Volume	39
Issue number	12
DOIs	https://doi.org/10.1002/er.3372 https://doi.org/10.1002/er.3372
Publication status	Published - 10 Oct 2015
Externally published	Yes

Keywords

Hydrogen production
Organometallic synthesis titanocene dichloride
Room temeprature synthesis
TiO nanospheres

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Nuclear Energy and Engineering
Fuel Technology
Energy Engineering and Power Technology

UN SDGs

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

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Cite this

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title = "Room-temperature synthesis of TiO2 nanospheres and their solar driven photoelectrochemical hydrogen production",

abstract = "Highly monodisperse and crystalline anatase phase TiO2 nanospheres have been synthesized at room temperature from organometallic precursor, titanocene dichloride and sodium azide. The photoelectrochemical (PEC) water splitting performance on the TiO2 nanospheres was studied under illumination of AM 1.5G. The optimized photocurrent density and photoconversion efficiency of TiO2 NSPs were observed ~0.95mAcm-2 at 1.23V and 0.69%, respectively. The transient photocurrent response measurements on the TiO2 NSPs during repeated ON/OFF visible light illumination cycles at 1.23V vs RHE show that both samples exhibited fast and reproducible photocurrent responses. The TiO2 NSPs show excellent catalytic stability, and significant dark current was not observed even at high potentials (2.0V vs RHE).",

keywords = "Hydrogen production, Organometallic synthesis titanocene dichloride, Room temeprature synthesis, TiO nanospheres",

author = "Vidya Avasare and Zhongai Zhang and Dnyaneshwar Avasare and Ibrahim Khan and Ahsanulhaq Qurashi",

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AU - Avasare, Vidya

AU - Zhang, Zhongai

AU - Avasare, Dnyaneshwar

AU - Khan, Ibrahim

AU - Qurashi, Ahsanulhaq

PY - 2015/10/10

Y1 - 2015/10/10

N2 - Highly monodisperse and crystalline anatase phase TiO2 nanospheres have been synthesized at room temperature from organometallic precursor, titanocene dichloride and sodium azide. The photoelectrochemical (PEC) water splitting performance on the TiO2 nanospheres was studied under illumination of AM 1.5G. The optimized photocurrent density and photoconversion efficiency of TiO2 NSPs were observed ~0.95mAcm-2 at 1.23V and 0.69%, respectively. The transient photocurrent response measurements on the TiO2 NSPs during repeated ON/OFF visible light illumination cycles at 1.23V vs RHE show that both samples exhibited fast and reproducible photocurrent responses. The TiO2 NSPs show excellent catalytic stability, and significant dark current was not observed even at high potentials (2.0V vs RHE).

AB - Highly monodisperse and crystalline anatase phase TiO2 nanospheres have been synthesized at room temperature from organometallic precursor, titanocene dichloride and sodium azide. The photoelectrochemical (PEC) water splitting performance on the TiO2 nanospheres was studied under illumination of AM 1.5G. The optimized photocurrent density and photoconversion efficiency of TiO2 NSPs were observed ~0.95mAcm-2 at 1.23V and 0.69%, respectively. The transient photocurrent response measurements on the TiO2 NSPs during repeated ON/OFF visible light illumination cycles at 1.23V vs RHE show that both samples exhibited fast and reproducible photocurrent responses. The TiO2 NSPs show excellent catalytic stability, and significant dark current was not observed even at high potentials (2.0V vs RHE).

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KW - Room temeprature synthesis

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