通过离子液体/金属溅射控制氧化钼纳米颗粒的氧化态以增强等离子体激元诱导的电荷分离。

Controlling the oxidation state of molybdenum oxide nanoparticles prepared by ionic liquid/metal sputtering to enhance plasmon-induced charge separation.

作者信息

Akiyoshi Kazutaka, Kameyama Tatsuya, Yamamoto Takahisa, Kuwabata Susumu, Tatsuma Tetsu, Torimoto Tsukasa

机构信息

Graduate School of Engineering, Nagoya University Furo-cho, Chikusa-ku Nagoya 464-8603 Japan

Graduate School of Engineering, Osaka University 2-1 Yamada-oka Suita Osaka 565-0871 Japan.

出版信息

RSC Adv. 2020 Aug 3;10(48):28516-28522. doi: 10.1039/d0ra05165a.

Nanoparticles composed of molybdenum oxide, MoO , were successfully prepared by room-temperature ionic liquid (RTIL)/metal sputtering followed by heat treatment. Hydroxyl groups in RTIL molecules retarded the coalescence between MoO NPs during heat treatment at 473 K in air, while the oxidation state of Mo species in MoO nanoparticles (NPs) could be modified by changing the heat treatment time. An LSPR peak was observed at 840 nm in the near-IR region for MoO NPs of 55 nm or larger in size that were annealed in a hydroxyl-functionalized RTIL. Photoexcitation of the LSPR peak of MoO NPs induced electron transfer from NPs to ITO electrodes.