一步水热合成贵金属掺杂的二氧化钛-氧化石墨烯复合材料用于光催化将CO转化为乙醇

One-Step Hydrothermal Synthesis of Precious Metal-Doped Titanium Dioxide-Graphene Oxide Composites for Photocatalytic Conversion of CO to Ethanol.

作者信息

Lertthanaphol Napat, Pienutsa Natpichan, Chusri Kittapas, Sornsuchat Thirawit, Chanthara Prowpatchara, Seeharaj Panpailin, Kim-Lohsoontorn Pattaraporn, Srinives Sira

机构信息

Nanocomposite Engineering Laboratory (NanoCEN), Department of Chemical Engineering, Faculty of Engineering, Mahidol University, Salaya, Nakornpathom 73170, Thailand.

Advanced Materials Research Unit, Department of Chemistry, Faculty of Science, King Mongkut's Institute of Technology Ladkrabang, Bangkok 10520, Thailand.

出版信息

ACS Omega. 2021 Dec 15;6(51):35769-35779. doi: 10.1021/acsomega.1c05799. eCollection 2021 Dec 28.

We utilized a one-step hydrothermal process for the synthesis of precious metal-doped titanium dioxide (TiO)/graphene oxide (GO) composites. The metal-doped TiO/GO composites, including silver-TiO/GO (Ag-TiO/GO), palladium-TiO/GO (Pd-TiO/GO), and copper-TiO/GO (Cu-TiO/GO), were synthesized by mixing a metal precursor, titanium butoxide, and graphene oxide in a water-ethanol mixture in an autoclave hydrothermal reactor. The photocatalytic performance of the composites was tested in the photoreduction of carbon dioxide (CO) to ethanol. Ag-TiO/GO, Pd-TiO/GO, and Cu-TiO/GO exhibited an ethanol production rate of 109, 125, and 233 μmol/g h, respectively. The outstanding performances of Cu-TiO/GO can be attributed to a combined effect of key parameters, including optical band gap, crystallite size, and BET surface area.