用于低浓度氢气检测的超灵敏TiO<sub>2</sub>传感材料高通量筛选方法研究

doi:10.11896/cldb.23040092

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Abstract With the strategy of combinatorial materials science, 121 types of TiO₂ gas-sensitive material films decorated with rare and noble metals were prepared rapidly via the parallel material synthesis platform and characterized by high-throughput screening effectly. The micromorphology of samples was analyzed by means of X-ray diffraction (XRD), field emission scanning electron microscope (FESEM) and energy dispersive spectrometer (EDS). The screening result indicates that the response of TiO₂ decorated with 0.5mol% Eu, 0.1mol% Gd, 0.1mol% V, 0.1mol% Rb, 0.5mol% Pt and 0.4mol% Pd can reach 334, 192, 1 074,1 120, 62 778 and 39 643 at 350 ℃ to 1 000×10^-6 H₂, respectively. Among them, the concentration detection limit of TiO₂-0.5mol% Pt can be to 2×10^-6 (0.002‰), while the response of TiO₂-0.4mol% Pd is 15 at 50 ℃ to 1 000×10^-6 H₂. It is founded that the screening materials have the good selectivity and long-term stability. The materials have broad application prospects in low-concentration hydrogen detection fields such as hydrogen energy storage and transportation safety monitoring and early warning of battery failure in the future.

Key words： TiO₂ surface modification of rare and noble metals H₂ sensor high-throughput

Published: Online: 2024-10-12

CLC number:	U461
	TP308

Fund:This work was financially supported by Yunnan Province Science and Technology Major Project for Materials Genetic Engineering of Rare and Precious Metal (202002AB080001), Science Research Foundation of Yunnan Provincial Education Department (2022J0441), Sichuan Science and Technology Program (22QYCX0097).

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	Articles by authors
	MA Yanjia
	YANG Li
	GUO Shenghui
	HOU Ming
	ZHU Ye
	ZHANG Deqi
	GAO Jiyun

Cite this article:

MA Yanjia,YANG Li,GUO Shenghui, et al. High-throughput Screening Methods for Ultrasensitive TiO₂ Sensing Materials to Low-concentration Hydrogen Detection[J]. Materials Reports, 2024, 38(18): 23040092-7.

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http://www.mater-rep.com/EN/10.11896/cldb.23040092 OR http://www.mater-rep.com/EN/Y2024/V38/I18/23040092

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