新型 CuO-ZnO 纳米棒的基于室温敏化光致发光的 H2S 传感研究。
Sensitive Room Temperature Photoluminescence-Based Sensing of H2S with Novel CuO-ZnO Nanorods.
机构信息
Condensed Matter Science and Technology Institute, School of Science, Harbin Institute of Technology , Harbin 150080, China.
State Key Laboratory of Urban Water Resource and Environment, School of Chemical Engineering and Technology, Harbin Institute of Technology , Harbin 150001, China.
出版信息
ACS Appl Mater Interfaces. 2016 Jun 29;8(25):16379-85. doi: 10.1021/acsami.6b02455. Epub 2016 Jun 15.
Novel CuO nanoparticle-capped ZnO nanorods have been produced using a pulsed laser deposition (PLD) method. These nanorods are shown to grow by a CuO-nanoparticle-assisted vapor-solid-solid (V-S-S) mechanism. The photoluminescence (PL) accompanying ultraviolet illumination of these capped nanorod samples shows large variations upon exposure to trace quantities of H2S gas. The present data suggest that both the Cu-doped ZnO stem and the CuO capping nanoparticle contribute to optical H2S sensing with these CuO-ZnO nanorods. This study represents the first demonstration of PL-based H2S gas sensing, at room temperature, with sub-ppm sensitivity. It also opens the way to producing CuO-ZnO nanorods by a V-S-S mechanism using gas-phase methods other than PLD.
使用脉冲激光沉积（PLD）方法制备了新型氧化铜纳米粒子封端的氧化锌纳米棒。这些纳米棒的生长机制是氧化铜纳米粒子辅助的气-固-固（V-S-S）机制。在紫外光照射下，这些封端纳米棒样品的光致发光（PL）在暴露于痕量硫化氢气体时会发生很大变化。目前的数据表明，掺杂铜的氧化锌茎和氧化铜盖帽纳米粒子都有助于这些氧化铜-氧化锌纳米棒的光学硫化氢传感。本研究首次在室温下基于 PL 实现了对硫化氢气体的传感，具有亚 ppm 的灵敏度。它还为使用除 PLD 之外的气相方法通过 V-S-S 机制制备氧化铜-氧化锌纳米棒开辟了道路。
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