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

被引：11
作者：
Akiyoshi, Kazutaka [1 ]
Kameyama, Tatsuya [1 ]
Yamamoto, Takahisa [1 ]
Kuwabata, Susumu [2 ]
Tatsuma, Tetsu [3 ]
Torimoto, Tsukasa [1 ]
机构：
[1] Nagoya Univ, Grad Sch Engn, Chikusa Ku, Furo Cho, Nagoya, Aichi 4648603, Japan
[2] Osaka Univ, Grad Sch Engn, 2-1 Yamada Oka, Suita, Osaka 5650871, Japan
[3] Univ Tokyo, Inst Ind Sci, Meguro Ku, 4-6-1 Komaba, Tokyo 1538505, Japan
来源：
RSC ADVANCES | 2020年 / 10卷 / 48期
关键词：
METAL NANOPARTICLES; ALLOY NANOPARTICLES; GOLD NANOPARTICLES; OXYGEN VACANCIES; ROOM-TEMPERATURE; DEPOSITION; LIQUIDS; SIZE; FILMS; NANOCOMPOSITES;
D O I：
10.1039/d0ra05165a
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Nanoparticles composed of molybdenum oxide, MoOx, 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(x)NPs during heat treatment at 473 K in air, while the oxidation state of Mo species in MoO(x)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(x)NPs of 55 nm or larger in size that were annealed in a hydroxyl-functionalized RTIL. Photoexcitation of the LSPR peak of MoO(x)NPs induced electron transfer from NPs to ITO electrodes.
引用
收藏
页码：28516 / 28522
页数：7
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