细菌视紫红质-氧化锌杂化物作为用于乙醇蒸汽低温检测的潜在传感元件。
Bacteriorhodopsin-ZnO hybrid as a potential sensing element for low-temperature detection of ethanol vapour.
作者信息
Kumar Saurav, Bagchi Sudeshna, Prasad Senthil, Sharma Anupma, Kumar Ritesh, Kaur Rishemjit, Singh Jagvir, Bhondekar Amol P
机构信息
CSIR-Central Scientific Instruments Organisation, Sector 30C, Chandigarh 160030, India; Academy of Scientific and Innovative Research, Rafi Marg, New Delhi 110011, India.
CSIR- Institute of Microbial Technology, Sector 39A, Chandigarh 160036, India.
出版信息
Beilstein J Nanotechnol. 2016 Apr 4;7:501-10. doi: 10.3762/bjnano.7.44. eCollection 2016.
Zinc oxide (ZnO) and bacteriorhodopsin (bR) hybrid nanostructures were fabricated by immobilizing bR on ZnO thin films and ZnO nanorods. The morphological and spectroscopic analysis of the hybrid structures confirmed the ZnO thin film/nanorod growth and functional properties of bR. The photoactivity results of the bR protein further corroborated the sustainability of its charge transport property and biological activity. When exposed to ethanol vapour (reducing gas) at low temperature (70 °C), the fabricated sensing elements showed a significant increase in resistivity, as opposed to the conventional n-type behaviour of bare ZnO nanostructures. This work opens up avenues towards the fabrication of low temperature, photoactivated, nanomaterial-biomolecule hybrid gas sensors.
通过将细菌视紫红质（bR）固定在氧化锌（ZnO）薄膜和ZnO纳米棒上，制备了ZnO与bR的混合纳米结构。对混合结构的形态和光谱分析证实了ZnO薄膜/纳米棒的生长以及bR的功能特性。bR蛋白的光活性结果进一步证实了其电荷传输特性和生物活性的可持续性。与裸露的ZnO纳米结构的传统n型行为相反，当在低温（70°C）下暴露于乙醇蒸气（还原性气体）时，制备的传感元件的电阻率显著增加。这项工作为制备低温、光激活的纳米材料-生物分子混合气体传感器开辟了道路。
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