PHOTOELECTROCHEMICAL WATER SPLITTING AND HYDROGEN PRODUCTION BY REDUCED GRAPHENE OXIDE/ ZNXCD1-XS NANOCOMPOSITE UNDER VISIBLE LIGHT IRRADIATION

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TEDADI NEDA; MORADLOU OMRAN

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Seminar Paper

Paper Information

Seminar: IRANIAN BIENNIAL ELECTROCHEMISTRY SEMINAR
Year:2014 | Issue:11

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Title

PHOTOELECTROCHEMICAL WATER SPLITTING AND HYDROGEN PRODUCTION BY REDUCED GRAPHENE OXIDE/ ZNXCD1-XS NANOCOMPOSITE UNDER VISIBLE LIGHT IRRADIATION

Author(s)

TEDADI NEDA | MORADLOU OMRAN | Issue Writer Certificate

Keywords

PHOTOELECTROCHEMICAL

GRAPHENE OXIDE/ ZNXCD1-XS

HYDROGEN PRODUCTION

Abstract

PHOTO ELECTROCHEMICAL HYDROGEN PRODUCTION FROM WATER SPLITTING UNDER VISIBLE-LIGHT IRRADIATION IS CONSIDERED TO BE AN ATTRACTIVE WAY TO SOLVE THE INCREASING GLOBAL ENERGY CRISIS AND ENVIRONMENTAL POLLUTION IN MODERN LIFE [1-3]. PHOTOELECTROCHEMISTRY (PEC) IS THE MOST PROMISING SYSTEM TO SUSTAINABLY PRODUCE HYDROGEN FUEL .IN THIS STUDY, THE PECH2-PRODUCTION ACTIVITY OVER THE REDUCED GRAPHENE OXIDE/ZNXCD1-XS NANOCOMPOSITES UNDER SIMULATED SOLAR IRRADIATION HAS BEEN REPORTED. AT FIRST, THE ELECTROPHORETIC METHOD WAS APPLIED TO DEPOSIT CHEMICALLY SYNTHESIZED GRAPHENE OXIDE (GRO) NANOSHEETS ONTO A TITANIUM MESH AS A SUITABLE SUBSTRATE. DURING THE ELECTROPHORETIC DEPOSITION, GRO IS REDUCED TO REDUCED GRAPHENE OXIDE (RGO). THEN, BY USING A FEASIBLE CO-PRECIPITATION HYDROTHERMAL STRATEGY, RGO-ZNXCD1-XS PHOTOANODE WAS SYNTHESIZED. IN THIS WAY, GRAPHENE/TITANIUM MESH WAS PLACED IN AN OUTOCLAVE INCLUDED CERTAIN AMOUNTS OF THIOUREA, ZN(NO3)2 AND CD(NO3)2. FOR OBTAINING HIGH EFFICIENCY IN H2 PRODUCTION, THE EXPERIMENTAL CONDITIONS SUCH AS REAGENTS RATIO, REACTION TEMPERATURE AND TIME WERE EXAMINED UNDER THE OPTIMIZED CONDITIONS (INCLUDING ZN: CD RATIO OF 4:1, THE REACTION TEMPERATURE OF 180OC, AND THE REACTION TIME OF 24H) ZNXCD1-XS NANOCOMPOSITE WERE DEPOSITED ON RGO/TI .THE PHOTO ELECTROCHEMICAL MEASUREMENTS WERE CARRIED OUT USING A GALVANOSTAT/POTENTIOSTAT AUTOLAB PGSTAT101 INSTRUMENT AND A THREE-ELECTRODE ELECTROCHEMICAL CELL WITH RGO-ZNXCD1-XS PHOTOANODE AS A WORKING ELECTRODE, A PLATINUM PLATE AS A COUNTER ELECTRODE, AND A AG/AGCL (KCL 3.0 M) AS A REFERENCE ELECTRODE. A HIGH-INTENSITY XE LAMP WITH UV FILTER WAS USED AS THE SOURCE OF THE VISIBLE LIGHT IRRADIATION. DURING ALL MEASUREMENTS, 0.1 M NA2SO4 WAS USED AS ELECTROLYTE. THE PHOTOCURRENT RESPONSE OF THE RGO-ZN0.8CD0.2S NANOCOMPOSITE PHOTOANODE WERE RECORDED 1.5 MA UNDER THE APPLIED POTENTIAL OF 0.5 V WITH SWITCHING-ON AND -OFF MODEL. THE PHOTOCURRENTS OF ZNXCD1-XS WERE ALTERED BY VARYING THE ZN/CD RATIO. IT WAS OBTAINED THAT UNDER THE SAME EXPERIMENTAL CONDITIONS, RGO-ZN0.8CD0.2S NANOCOMPOSITE WITH HIGHER PHOTOCURRENT HAS HIGHER EFFICIENCY IN H2 PRODUCTION.

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APA: Copy

TEDADI, NEDA, & MORADLOU, OMRAN. (2014). PHOTOELECTROCHEMICAL WATER SPLITTING AND HYDROGEN PRODUCTION BY REDUCED GRAPHENE OXIDE/ ZN_XCD_1-XS NANOCOMPOSITE UNDER VISIBLE LIGHT IRRADIATION. IRANIAN BIENNIAL ELECTROCHEMISTRY SEMINAR. SID. https://sid.ir/paper/912115/en

Vancouver: Copy

TEDADI NEDA, MORADLOU OMRAN. PHOTOELECTROCHEMICAL WATER SPLITTING AND HYDROGEN PRODUCTION BY REDUCED GRAPHENE OXIDE/ ZN_XCD_1-XS NANOCOMPOSITE UNDER VISIBLE LIGHT IRRADIATION. 2014. Available from: https://sid.ir/paper/912115/en

IEEE: Copy

NEDA TEDADI, and OMRAN MORADLOU, “PHOTOELECTROCHEMICAL WATER SPLITTING AND HYDROGEN PRODUCTION BY REDUCED GRAPHENE OXIDE/ ZN_XCD_1-XS NANOCOMPOSITE UNDER VISIBLE LIGHT IRRADIATION,” presented at the IRANIAN BIENNIAL ELECTROCHEMISTRY SEMINAR. 2014, [Online]. Available: https://sid.ir/paper/912115/en

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