A tin-zinc bimetallic oxide supported palladium nanoparticle, and a preparation method and application thereof

By loading Pd nanoparticles onto tin-zinc bimetallic oxide and preparing Pd/SnO2/ZnO nanoparticles using a solvothermal method, the problems of poor selectivity, low sensitivity, and poor moisture resistance of hydrogen sensors were solved, achieving low-temperature and high-efficiency hydrogen detection.

CN122403493APending Publication Date: 2026-07-17GUILIN UNIV OF ELECTRONIC TECH
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Patent Information

Application Number
CN202610685586.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-05-19
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing hydrogen sensors suffer from poor selectivity, low sensitivity, high operating temperature, and poor moisture resistance, making them unsuitable for portable integrated applications.

Method used

Palladium chloride was reduced in situ to highly dispersed Pd nanoparticles via a solvothermal method, which were then loaded onto a tin-zinc bimetallic oxide. The particle size of the Pd nanoparticles was controlled to improve hydrogen dissociation capacity and interfacial chemical bonding stability, thereby reducing excessive adsorption of water molecules.

Benefits of technology

It significantly improves hydrogen response and selectivity at low operating temperatures, maintains response stability under high humidity conditions, simplifies the preparation process, and reduces energy consumption.

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Abstract

本发明公开了一种锡锌双金属氧化物负载钯纳米颗粒SnZn‑Pd2以五水合四氯化锡、六水硝酸锌、二甲基咪唑和氯化钯为原料,甲醇为溶剂,通过搅拌离心干燥和煅烧后得到锡锌双金属氧化物,再通过溶剂热法将分散在SnO2 / ZnO上,同时实现将氯化钯还原为Pd单质;为n型半导体,化学组成为SnO2、ZnO和Pd;微观形貌为纳米颗粒结构,粒径范围为150‑450 nm。其制备方法包括以下步骤:1,锡锌双金属氧化物SnO2 / ZnO的制备;2,锡锌双金属氧化物负载钯纳米颗粒SnZn‑Pd2的制备。一种基于SnZn‑Pd2的氢气传感器,最佳工作温度范围为60‑90 ℃,响应值为250‑400,响应时间为1‑3 s,恢复时间为80‑100 s;对不同浓度的氢气具有不同的响应值;具有耐湿性,湿度为80%的条件下,响应值仍高达220‑240,保持率为65‑70%。
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