journal article·2020-07-27

Solution-Based Comproportionation Reaction for Facile Synthesis of Black TiO2 Nanotubes and Nanoparticles

Zebiao Li, Haidong Bian, Zhengtao Xu, Jian Lu, Yang Yang Li

ACS Applied Energy Materials· Volume 3· Issue 7
Publisher page

Abstract

A convenient and efficient strategy is disclosed for blackening anodic TiO2 nanotubes and commercial P25 powders through an easy solution-soaking treatment at mild conditions (e.g., 60 °C) in polyol (e.g., glycerol, ethylene glycol) solutions. The F– ions, acidic polyol solvents, and contact between the TiO2 and Ti components are discovered to be the prerequisites for the water-promoted comproportionation between TiO2 and Ti, which generate Ti(III) species that effectively blacken different TiO2 nanomaterials, including the anodic nanotube arrays and P25 nanoparticles. The black TiO2 thus obtained from this convenient soaking method displays improved photoelectrochemical performance.
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Research context

OpenAlex topics: TiO2 Photocatalysis and Solar Cells · Advanced Photocatalysis Techniques · Electronic and Structural Properties of Oxides

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Hong Kong Branch of National Precious Metals Material Engineering Research Centre, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, China

Center of Super-Diamond and Advanced Films (COSDAF), City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, China

Department of Materials Science and Engineering, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, China

Department of Mechanical Engineering, City University of Hong Kong, Greater Bay Joint Division, Shenyang National Laboratory for Materials Science, Tat Chee Avenue, Kowloon, Hong Kong, China

Department of Chemistry, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong, China

Centre for Advanced Structural Materials, City University of Hong Kong Shenzhen Research Institute, Greater Bay Joint Division, Shenyang National Laboratory for Materials Science, 8 Yuexing First Road, Shenzhen Hi-Tech Industrial Park, Nanshan District, Shenzhen 518057, China

Funding

Ministry of Science and Technology of the People's Republic of China · Innovation and Technology Commission · National Natural Science Foundation of China · Centre for Functional Photonics, City University of Hong Kong

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