Microwave synthesised Pd–TiO2 for photocatalytic ammonia production

Jake M. Walls; Jagdeep S. Sagu; K. G. Upul Wijayantha

doi:10.1039/C8RA09762C

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Microwave synthesised Pd–TiO₂ for photocatalytic ammonia production†

Jake M. Walls,

*^a Jagdeep S. Sagu^a and K. G. Upul Wijayantha

Author affiliations

* Corresponding authors

^a Energy Research Laboratory, Department of Chemistry, Loughborough University, Loughborough, UK
E-mail: j.m.walls2@lboro.ac.uk

Abstract

Palladium doped anatase TiO₂ nanoparticles were synthesised by a rapid (3 min) one-pot microwave synthesis technique at low temperature and pressure. After being fully characterised by SEM, XRD, Raman, XPS and EDX, photocatalytic nitrate reduction and ammonia production were studied over various dopant levels between 0–3.97 wt% Pd and compared to similar previous literature. Improved yields of ammonia were observed with most dopant levels when compared to non-doped microwave synthesised TiO₂ with 2.65 wt% found to be the optimum dopant level producing 21.2 μmol NH₃. Electrochemical impedance spectroscopy of TiO₂ and Pd–TiO₂ photoelectrodes revealed improvements in charge transfer characteristics at high Pd dopant levels.

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Article information

DOI: https://doi.org/10.1039/C8RA09762C
Article type: Paper
Submitted: 27 Nov 2018
Accepted: 12 Feb 2019
First published: 22 Feb 2019
This article is Open Access

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RSC Adv., 2019,9, 6387-6394

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Microwave synthesised Pd–TiO₂ for photocatalytic ammonia production

J. M. Walls, J. S. Sagu and K. G. Upul Wijayantha, RSC Adv., 2019, 9, 6387 DOI: 10.1039/C8RA09762C

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