01750nas a2200169   4500008004100000245012500041210006900166260000800235300001100243490000700254520109400261100002801355700001901383700001701402700003001419856013101449       2026                        eng d00aAll-inorganic CeO2-TiO2 artificial photosynthesis system with forced heterojunctions for methane to C-C coupled products0 aAllinorganic CeO2TiO2 artificial photosynthesis system with forc  cAUG  a1170010 v293 a<p>
	Sustainable and efficient photocatalytic conversion of small molecules to liquid fuels/chemicals needs a large extent of charge separation at heterojunctions and equal charge utilization at redox sites. Toward achieving this, visible-light absorbing CeO2 quantum dots (CeQDs) are directly assembled from the precursors (Ce3+ and OH-) into the TiO2 nanopores by the successive ionic layer adsorption and reaction method, and are subsequently integrated structurally and electronically. Assembly of CeQDs into TiO2 leads to a sub-trillion number of heterojunctions in 1 mg photocatalyst material. Concurrent activation of water and methane generates active radicals that help in selective ethanol and a minor amount of acetone formation. Product generation is further enhanced by deliberate reduction of the photocatalyst device, which enhances Ce3+ content and broadens the valence band with a significant change in electronic structure. The detailed analysis of the photocatalyst device and photocatalysis results reveals the charge transfer mechanism and the reaction pathway.</p>
1 aKanungo, Subhashree, S.1 aMurali, Akshay1 aVerma, Divya1 aGopinath, Chinnakonda, S.  uhttps://library.ncl.res.in/content/all-inorganic-ceo2-tio2-artificial-photosynthesis-system-forced-heterojunctions-methane-c-c