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Photoactivity of MWCNTs modified α-Fe2O3 photoelectrode towards efficient solar water splitting

Author

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  • Rai, Snigdha
  • Ikram, Ashi
  • Sahai, Sonal
  • Dass, Sahab
  • Shrivastav, Rohit
  • Satsangi, Vibha R.

Abstract

MWCNTs (Multiwalled Carbon Nanotubes) modified α-Fe2O3 (hematite) photoelectrodes have been investigated for their possible application in hydrogen generation via photoelectrochemical (PEC) splitting of water. Enhanced photoresponse seen in comparison to the pristine α-Fe2O3 films is credited to the effective charge facilitation and charge separation provided by MWCNT conducting support. 0.2 wt% MWCNTs modified α-Fe2O3 thin film exhibited the maximum photocurrent density of 2.8 mA/cm2 at 0.75 V/SCE. Measured values of flat band potential, donor density, resistance, Applied bias photon-to-current efficiency (ABPE) and Incident-photon-to current-conversion efficiency (IPCE) support the observed enhancement in photocurrent.

Suggested Citation

  • Rai, Snigdha & Ikram, Ashi & Sahai, Sonal & Dass, Sahab & Shrivastav, Rohit & Satsangi, Vibha R., 2015. "Photoactivity of MWCNTs modified α-Fe2O3 photoelectrode towards efficient solar water splitting," Renewable Energy, Elsevier, vol. 83(C), pages 447-454.
    • Handle: RePEc:eee:renene:v:83:y:2015:i:c:p:447-454
    DOI: 10.1016/j.renene.2015.04.053
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    References listed on IDEAS

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    1. Singh, Nirupama & Kumari, Babita & Sharma, Shailja & Chaudhary, Surbhi & Upadhyay, Sumant & Satsangi, Vibha R. & Dass, Sahab & Shrivastav, Rohit, 2014. "Electrodeposition and sol–gel derived nanocrystalline N–ZnO thin films for photoelectrochemical splitting of water: Exploring the role of microstructure," Renewable Energy, Elsevier, vol. 69(C), pages 242-252.
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    Cited by:

    1. Bai, Shouli & Han, Jingyi & Zhao, Yingying & Chu, Haomiao & Wei, Shiqiang & Sun, Jianhua & Sun, Lixia & Luo, Ruixian & Li, Dianqing & Chen, Aifan, 2020. "rGO decorated BiVO4/Cu2O n-n heterojunction photoanode for photoelectrochemical water splitting," Renewable Energy, Elsevier, vol. 148(C), pages 380-387.

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