Activating oxygen deficient TiO2 in the visible region by Bi2MoO6 for CO2 photoreduction to methanol

Risov Das; Kousik Das; Sathyapal R Churipard; Sebastian C Peter

doi:10.1039/d2cc00490a

Activating oxygen deficient TiO₂ in the visible region by Bi₂MoO₆ for CO₂ photoreduction to methanol

Chem Commun (Camb). 2022 Jun 8;58(46):6638-6641. doi: 10.1039/d2cc00490a.

Authors

Risov Das^{1

2}, Kousik Das^{1

2}, Sathyapal R Churipard^{1

2}, Sebastian C Peter^{1

2}

Affiliations

¹ New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore-560064, India. sebastiancp@jncasr.ac.in.
² School of Advanced Materials, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore-560064, India.

PMID: 35588261
DOI: 10.1039/d2cc00490a

Abstract

Fast photogenerated charge recombination and inappropriate bandgap for visible light driven charge generation hinders the performance of TiO₂. In this study, TiO₂ was activated for visible light driven CO₂ reduction in the presence of Bi₂MoO₆ as an electron donor. Furthermore, the introduction of oxygen vacancies resulted in enhanced CO₂ adsorption and conversion. The best catalyst gives 27.1 μmol g^-1 h^-1 methanol formation. DRIFTS was used to explain the methanol formation mechanism on oxygen deficient TiO₂.