Selective photoelectrochemical oxidation of glucose to glucaric acid by single atom Pt decorated defective TiO<sub>2</sub>.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 36627303.
- Also identified by DOI 10.1038/s41467-023-35875-9 and PMC identifier 9831984.
- Licence recorded as CC BY.
- The licence permits redistribution, so the abstract is shown in full and the full text is available from the publisher.
Abstract
Photoelectrochemical reaction is emerging as a powerful approach for biomass conversion. However, it has been rarely explored for glucose conversion into value-added chemicals. Here we develop a photoelectrochemical approach for selective oxidation of glucose to high value-added glucaric acid by using single-atom Pt anchored on defective TiO<sub>2</sub> nanorod arrays as photoanode. The defective structure induced by the oxygen vacancies can modulate the charge carrier dynamics and band structure, simultaneously. With optimized oxygen vacancies, the defective TiO<sub>2</sub> photoanode shows greatly improved charge separation and significantly enhanced selectivity and yield of C<sub>6</sub> products. By decorating single-atom Pt on the defective TiO<sub>2</sub> photoanode, selective oxidation of glucose to glucaric acid can be achieved. In this work, defective TiO<sub>2</sub> with single-atom Pt achieves a photocurrent density of 1.91 mA cm<sup>-2</sup> for glucose oxidation at 0.6 V versus reversible hydrogen electrode, leading to an 84.3 % yield of glucaric acid under simulated sunlight irradiation.
Medical subject headings
- Glucaric Acid
- Glucose