Overview
Tin dioxide (SnO2) microparticles are a versatile inorganic material with a rutile crystalline structure, prized for its electrical conductivity and optical transparency in thin films. Produced via chemical vapor deposition or wet-chemical methods, micron-sized SnO2 is critical in industries requiring precise particle morphology. As an n-type semiconductor, it exhibits sensitivity to reducing gases, making it indispensable for sensor applications. Its inertness and high melting point also suit it for harsh environments, such as aerospace coatings or refractory ceramics.
Physical and Chemical Properties
SnO2 microparticles typically range from 1 to 10 µm in diameter, with a tetragonal crystal lattice contributing to their stability. The material’s bandgap of ~3.6 eV enables UV-blocking properties, useful in sunscreens and protective coatings. Chemically, SnO2 resists oxidation but reacts with strong acids or bases at elevated temperatures. Its resistivity can be tuned via doping (e.g., with antimony or fluorine), enhancing performance in transparent conductive oxides (TCOs) for touchscreens.
Main Applications
In gas sensors, SnO2 detects CO, NOx, and methane due to its surface redox reactivity. The automotive industry relies on it for exhaust monitoring systems. Transparent conductive films incorporating SnO2 are alternatives to indium tin oxide (ITO) in solar panels. Ceramic applications include opacifiers in glazes and enamel, where its high refractive index creates opacity. Catalytic uses span from methanol synthesis to wastewater treatment.
Safety and Storage
While SnO2 is non-flammable, airborne dust poses inhalation risks (TLV: 2 mg/m³). Use NIOSH-approved respirators and local exhaust ventilation during processing. Store in sealed containers away from acids. Moisture absorption can affect dispersion properties; some grades may require argon packaging for long-term stability. Spills should be vacuumed, not swept, to minimize dust generation.
B2B Procurement Guide
Buyers should prioritize suppliers offering batch consistency in particle size distribution (PSD), verified via laser diffraction analysis. Technical datasheets must include purity (>99.9% for electronics), surface area (BET method), and dopant concentrations if applicable. Bulk orders (100+ kg) often reduce costs by 20–30%. Sample testing for intended applications (e.g., sensor response curves) is recommended. Lead times vary from 2–6 weeks for custom grades.
Related Manufacturers
- 主营：多聚甲醛、环己胺、正硅酸乙酯28 40、正十二烷、二甲基甲酰胺、戊二酸二甲酯、邻苯二甲酸二乙酯、二甲苯、二氯甲烷、乙二醇乙醚醋酸酯、异丙醇、无水乙醇、铬酸酐、亚氯酸钠、硫酸羟胺、环己烷、四氯乙烯、环己酮、环氧氯丙烷、甲醇、甲酸、乙腈、苯酚、醋酸丁酯
- 主营：纳米二氧化锡、氧化铬绿
- 主营：钴粉、镍粉、铬粉、高纯氧化锡粉、钼粉、铜粉、铅粉、铌粉、硼粉、铟粉、锡粉、钴基合金粉、不锈钢合金粉、冶金 喷涂喷焊金属粉末、铁基合金粉、镍基合金粉
- 主营：肌氨酸钠、硫化锰、腰果酚缩水甘油醚、V50偶氮二异丁脒盐酸盐、二新癸酸二甲基锡、乙硫氮、三硫代碳酸钠、PX-4MP、芥酸PKO、四氧化三锰
- 主营：纯铜粉、纯镍粉、纯铬粉、碳化钨、钒铁粉、紫铜粉、钛铁粉、金属钨、钨粉纯、石墨粉、黄铜粉、合金粉、钼铁粉、青铜粉、纯铅粉、球形镍粉、纳米铅粉、电解锡粉、导电镍粉、铬粉用户、激光熔覆、铜粉需要、纳米铜粉、超细钴粉、铜粉预定
- 主营：耐磨涂层、陶瓷喷涂、喷涂碳化钨、耐磨合金刀片、防腐纳米涂层
- 主营：分散液、青铜粉、纳米碳、纳米二、二钽粉、微米铁粉、微米钴粉、超细硼、高纯硅、max陶瓷、纳米四、导电镍粉、纳米铜粉、高纯六硼、超细铁粉、超细钨粉、抗紫外线、纳米钽粉、磁性纳米、硬质合金、纳米铌粉、球形铋粉、氧化铁粉、纳米铬粉、超细铅粉
- 主营：熔覆修补、金属颗粒、合金粉末、耐磨陶瓷、金属涂层喷涂、绝缘陶瓷喷涂、氧化铝陶瓷粉、防腐陶瓷涂层
- 主营：氧化铝、镍铁粉、钨铁粉、二氧化锆、三氧化二、二硫化钨、白铅粉、氧化硼、锰铁粉、硅铁粉、氧化钛粉、球形磁粉、雾化铜粉、钒铁粉末、氧化铋粉、钛铁合金、三氧化钼、氧化镁粉、氧化钴粉、耐火材料、氧化铬绿、纳米氧化钛、纳米氧化锌、球形磁铁粉、四氧化三铁
- 主营：二氧化锡、锡条、锡丝、废锡回收
- 主营：焊锡条、焊锡丝、无铅锡锭、二氧化锡、免洗锡线
- 主营：废锡灰、锡焊条、锡箔纸、二氧化锡、锡箔灰、锡制品、今日锡、公司四、无铅锡、焊锡线、锡合金、焊锡丝、焊锡一、焊锡条、灰锡丝、氯化锡、锡废品、涂锡带、0307锡渣、锡膏回收、锡制茶漏、业收购锡、锡业焊锡、兴鸿泰锡、特级焊锡、收购锡渣
- 主营：高纯硒粉、高纯硅粉、进口硒粉、厂家氧化锡粉、铜粉
- 主营：镍粉、铜粉、合金粉末、二氧化粉SnO2、镍基合金粉末
- 主营：2d碳化钒、单层mbene、陶瓷材料、纳米氧化锡、mab相材料、mbene前驱体、ti3c2tx柔性膜、免疫因子纳米载体服务