TY - JOUR
T1 - Bi-Doped Ti-Oxide Cluster Photocatalyst with High Performance in the Selective Transformation of Benzyl Alcohols to Benzaldehydes
AU - Liu, Caiyun
AU - Niu, Huihui
AU - Wang, Dexin
AU - Liu, Yanshu
AU - Said, Amir
AU - Wang, Guo
AU - Tung, Chen Ho
AU - Wang, Yifeng
N1 - Publisher Copyright:
© 2023 American Chemical Society.
PY - 2023/9/6
Y1 - 2023/9/6
N2 - Selective oxidation utilizing sunlight and O2 is a cost-effective technique for converting organic raw materials into value-added products. We present a novel Bi-doped Ti-oxide cluster (TOC), Ti19Bi2, for the selective conversion of benzyl alcohols to benzaldehydes under sunlight irradiation. It is prepared as single crystals and precisely characterized by single-crystal X-ray diffraction. A structure-activity study is performed by combining experiments and density functional theory. Bi mainly contributes to the LUMO + 1 of Ti19Bi2, with a minor effect on the band gap energy. Bi doping causes the accumulation of photogenerated electrons at Bi sites, resulting in potent reducing power and high O2 activation ability, promoting charge separation and interfacial charge transfer. The Ti19Bi2 solar system showed good activity, selectivity, substrate scope, and catalyst recyclability in the selective oxidation of benzyl alcohols. It outperforms reference TOCs free of Bi, such as Ti8O8Bz16 (Bz = benzoate) and commercial TiO2 P25. Additionally, Ti19Bi2 is effective in photocatalytic CO2/epoxide cycloaddition and dye degradation reactions.
AB - Selective oxidation utilizing sunlight and O2 is a cost-effective technique for converting organic raw materials into value-added products. We present a novel Bi-doped Ti-oxide cluster (TOC), Ti19Bi2, for the selective conversion of benzyl alcohols to benzaldehydes under sunlight irradiation. It is prepared as single crystals and precisely characterized by single-crystal X-ray diffraction. A structure-activity study is performed by combining experiments and density functional theory. Bi mainly contributes to the LUMO + 1 of Ti19Bi2, with a minor effect on the band gap energy. Bi doping causes the accumulation of photogenerated electrons at Bi sites, resulting in potent reducing power and high O2 activation ability, promoting charge separation and interfacial charge transfer. The Ti19Bi2 solar system showed good activity, selectivity, substrate scope, and catalyst recyclability in the selective oxidation of benzyl alcohols. It outperforms reference TOCs free of Bi, such as Ti8O8Bz16 (Bz = benzoate) and commercial TiO2 P25. Additionally, Ti19Bi2 is effective in photocatalytic CO2/epoxide cycloaddition and dye degradation reactions.
UR - http://www.scopus.com/inward/record.url?scp=85169895126&partnerID=8YFLogxK
U2 - 10.1021/acs.cgd.3c00695
DO - 10.1021/acs.cgd.3c00695
M3 - Article
AN - SCOPUS:85169895126
SN - 1528-7483
VL - 23
SP - 6866
EP - 6875
JO - Crystal Growth and Design
JF - Crystal Growth and Design
IS - 9
ER -