DataVXACS Materials LettersPaper
journal article·2023-09-04Open access

Low-Temperature Microwave-Assisted Hydrothermal Synthesis of Pb2Ti2O5.4F1.2 Photocatalyst for Improved H2 Evolution under Visible Light

Kenta Aihara, Ryusuke Mizuochi, Megumi Okazaki, Shunta Nishioka, Shuhei Yasuda, Toshiyuki Yokoi, Fumitaka Ishiwari, Akinori Saeki, Miki Inada, Kazuhiko Maeda

ACS Materials Letters· Volume 5· Issue 9
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Abstract

High Resolution Image Download MS PowerPoint Slide Mixed-anion compounds are promising candidates as visible-light-driven photocatalysts; however, their synthesis is generally difficult compared to that of their ordinary single-anion counterparts such as oxides. This difficulty is often an obstacle in maximizing the performance of mixed-anion photocatalysts. In this work, Pb 2 Ti 2 O 5.4 F 1.2 particles having a well-defined octahedral shape were successfully synthesized by a microwave-assisted hydrothermal (MHT) method at 473 K. The MHT-Pb 2 Ti 2 O 5.4 F 1.2 exhibited a greater specific surface area and improved hydrophilicity compared with its analogue synthesized by a conventional solid-state reaction (SSR). Compared with the SSR-Pb 2 Ti 2 O 5.4 F 1.2, the MHT-Pb 2 Ti 2 O 5.4 F 1.2 exhibited 6-fold greater activity toward visible-light H 2 evolution from water. A postheating treatment of the MHT-derived material in air at 573 K further improved its activity 3–4 fold. The optimized MHT-Pb 2 Ti 2 O 5.4 F 1.2 also achieved a nonsacrificial H 2 evolution in the presence of a reversible electron donor.
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Research context

Catalysis & surfaces

OpenAlex topics: Advanced Photocatalysis Techniques · Luminescence Properties of Advanced Materials · Covalent Organic Framework Applications

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

Affiliations

Department of Chemistry, School of Science, Tokyo Institute of Technology, 2-12-1-NE-2 Ookayama, Meguro-ku, Tokyo 152-8550, Japan

Nanospace Catalysis Unit, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama 226-8503, Japan

Department of Applied Chemistry, Graduate School of Engineering, Osaka University, 1-1 Yamadaoka, Suita, Osaka 565-0871, Japan

Innovative Catalysis Science Division, Institute for Open and Transdisciplinary Research Initiatives (ICS-OTRI), Osaka University, 1-1 Yamadaoka, Suita, Osaka 565-0871, Japan

PRESTO, Japan Science and Technology Agency (JST), Kawaguchi, Saitama 332-0012, Japan

Center of Advanced Instrumental Analysis, Kyushu University, 6-1 Kasuga-koen, Kasuga, Fukuoka 816-8580, Japan

Living Systems Materialogy (LiSM) Research Group, International Research Frontiers Initiative (IRFI), Tokyo Institute of Technology, 4259 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8502, Japan

Funding

Core Research for Evolutional Science and Technology · Japan Society for the Promotion of Science · Japan Science and Technology Agency

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