Towards environment friendly hydrothermally synthesized Li+, Rb+, In3+ intercalated phosphotungstate (PW12O40) thin films

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Nadaf, Sameer N. and Patil, Satish S. and Kalantre, Vilasrao A. and Mali, Sawanta S. and Patil, Jyoti V. and Hong, Chang Kook and Patil, Sharadchandra S. and Bhosale, Popatrao N. and Mane, Sambhaji R. (2023) Towards environment friendly hydrothermally synthesized Li+, Rb+, In3+ intercalated phosphotungstate (PW12O40) thin films. Materials, 16 (3). 888. ISSN 1996-1944 (https://doi.org/10.3390/ma16030888)

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Abstract

In the present investigation, a one-step hydrothermal approach is proposed to synthesize Li+, Rb+, and In3+intercalated PW12O40 (PTA) thin films. The photoelectrochemical performance of the deposited Li3PW12O40 (Li−PTA), Rb3PW12O40 (Rb−PTA), and In3PW12O40 (In−PTA) photocathodes were investigated using a two-electrode cell configuration of FTO/Li3PW12O40/(0.1 M I−/I3−)aq./Graphite. The energy band gaps of 2.24, 2.11, and 2.13 eV were observed for the Li−PTA, Rb−PTA, and In−PTA films, respectively, as a function of Li+, Rb+, and In3+. The evolution of the spinal cubic crystal structure with increased crystallite size was observed for Rb+ intercalation within the PTA Keggin structure, which was confirmed by X-ray diffraction (XRD). Scanning electron microscopy (SEM) revealed a modification in the surface morphology from a rod-like structure to a densely packed, uniform, and interconnected microsphere to small and large-sized microspheres for Li−PTA, Rb−PTA, and In−PTA, respectively. Compositional studies confirmed that the composing elements of Li, Rb, In, P, W, and O ions are well in accordance with their arrangement for Li+, Rb+, In3+, P5+, W6+, and O2− valence states. Furthermore, the J-V performance of the deposited photocathode shows power conversion efficiencies (PCE) of 1.25%, 3.03%, and 1.62%, as a function of the incorporation of Li+, Rb+, and In3+ ions. This work offers a one-step hydrothermal approach that is a prominent way to develop Li+, Rb+, and In3+ ions intercalated PTA, i.e., Li3PW12O40, Rb3PW12O40, and In3PW12O40 photocathodes for competent solar energy harvesting.

ORCID iDs

Nadaf, Sameer N., Patil, Satish S., Kalantre, Vilasrao A., Mali, Sawanta S. ORCID logoORCID: https://orcid.org/0000-0002-4973-4203, Patil, Jyoti V., Hong, Chang Kook, Patil, Sharadchandra S., Bhosale, Popatrao N. and Mane, Sambhaji R.;
  • Item type:Article
    ID code:89966
    Dates:
    Date
    Event
    17 January 2023
    Published
    11 January 2023
    Accepted
    13 November 2022
    Submitted
    Subjects:Science > Chemistry
    Department:Faculty of Science > Pure and Applied Chemistry
    Depositing user: Pure Administrator
    Date deposited:19 Jul 2024 15:54
    Last modified:11 Nov 2024 14:23
    URI:https://strathprints.strath.ac.uk/id/eprint/89966
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