Facile Synthesis of N-Doped SnO2 Nanoparticles: A Cocatalyst-Free Promising Photocatalyst for Hydrogen Generation

Bhawna, Akanksha Gupta, Prashant Kumar, Adish Tyagi, Ravinder Kumar, Ashwani Kumar, Prashant Singh, R. P. Singh, Vinod Kumar

Research output: Contribution to journalArticlepeer-review

21 Scopus citations

Abstract

A facile solution-based one-step synthetic approach has been employed for an easy introduction of Nitrogen (N) into SnO2 lattice under the mild condition for a cocatalyst free hydrogen generation by photocatalytic water splitting. The crystal structure and morphology of synthesized N doped SnO2 nanoparticles were confirmed by powder X-ray diffraction and electron microscopic techniques. Analysis by X-ray Photoelectron Spectroscopy confirms that 4.6 % N was present in SnO2 lattice, while broadband observed in the Raman spectrum reveals the presence of oxygen vacancies and disordered structure due to N-doping. The nanoparticles exhibit high surface area (139.7 m2/g) and bandgap close to 3.45 eV as deduced from Brunauer-Emmett-Teller (BET) measurement and Diffuse reflectance spectroscopic technique, respectively. The photocatalytic performance of the nanoparticles was evaluated by water splitting reaction for hydrogen generation using a photochemical reactor consisting of a Xenon lamp and was performed using different scavengers. It was found that out of various scavengers, maximum hydrogen yield, i. e., 169 μmol/g was achieved by N doped SnO2 nanoparticles with methanol and the order of scavengers for hydrogen generation using N doped SnO2 nanoparticles is Methanol>EDTA>TEOA.

Original languageEnglish
Pages (from-to)7775-7782
Number of pages8
JournalChemistrySelect
Volume5
Issue number26
DOIs
StatePublished - 15 Jul 2020
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2020 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim

Funding

The author thanks SERB (YSS/2015/001120) Govt. of India for financial support. The authors Bhawna and PK thanks UGC and IIT Bomaby for fellowship. The author also thanks USIC and Department of Chemistry, University of Delhi for various characterizations. . The author thanks SERB (YSS/2015/001120) Govt. of India for financial support. The authors Bhawna and PK thanks UGC and IIT Bomaby for fellowship. The author also thanks USIC and Department of Chemistry, University of Delhi for various characterizations

FundersFunder number
Department of Chemistry, University of Delhi
University Grants Committee
Science and Engineering Research BoardYSS/2015/001120

    Keywords

    • Doping
    • Photocatalyst
    • Scavenger
    • Water Splitting
    • XPS

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