Overview
Titanium dioxide nanoparticles (TiO2 NPs) are engineered particles with diameters typically ranging from 1 to 100 nanometers. Due to their small size, they exhibit enhanced surface area and unique quantum effects compared to bulk TiO2. These properties make them valuable in industries requiring high reactivity or UV-blocking capabilities. TiO2 NPs are synthesized through methods like sol-gel, hydrothermal, or flame pyrolysis. Their crystalline forms (anatase, rutile, or brookite) influence their performance in applications such as photocatalysis or pigment production. Regulatory bodies like the FDA and EU have guidelines for their safe use in consumer products.
Physical and Chemical Properties
TiO2 NPs are chemically inert under most conditions but become highly reactive under UV light due to their photocatalytic properties. Their optical characteristics allow them to scatter and absorb UV radiation effectively, making them ideal for sunscreens. The nanoparticles' high surface area-to-volume ratio enhances their catalytic efficiency in environmental remediation processes. Thermal stability is another key trait, with melting points near 1800°C. However, nanoparticle behavior can differ from bulk TiO2, particularly in dispersion stability and agglomeration tendencies. Surface modifications (e.g., silica coating) are often applied to improve compatibility with matrices like polymers or cosmetics.
Main Applications
In sunscreens, TiO2 NPs provide broad-spectrum UV protection without leaving a white residue. Their photocatalytic activity is leveraged in self-cleaning coatings for windows and building materials, where they break down organic pollutants under sunlight. Paints and coatings benefit from their opacity and durability. The environmental sector uses TiO2 NPs for water purification and air treatment, exploiting their ability to degrade contaminants. Emerging applications include photovoltaic cells and antibacterial surfaces. In food packaging, they may extend shelf life by blocking UV light and inhibiting microbial growth.
Safety and Storage
While TiO2 NPs are generally considered low-toxicity, inhalation risks during handling warrant precautions such as respirators and fume hoods. Environmental persistence is a concern, prompting research into eco-friendly disposal methods. Regulatory classifications vary; for example, the EU labels inhaled TiO2 as a Category 2 suspected carcinogen. Storage requires airtight containers to prevent moisture absorption and agglomeration. Avoid exposure to direct sunlight to maintain photocatalytic stability. Safety data sheets (SDS) should be reviewed for specific handling protocols, especially in industrial settings.
B2B Procurement Guide
When sourcing TiO2 NPs, prioritize suppliers that provide detailed technical specifications, including particle size distribution, crystalline phase, and surface area (BET). Certificates of Analysis (CoA) ensure compliance with industry standards like ISO or REACH. Bulk buyers should negotiate pricing for volumes exceeding 100 kg. Consider application-specific requirements: sunscreen manufacturers may need coated nanoparticles for better dispersion, while photocatalytic applications might require pure anatase. Lead times can vary due to customization needs, so plan procurement accordingly. Reputable suppliers often offer sample testing before large orders.
Related Manufacturers
- 主营：钛白粉、塑料跑道、工业涂料、二氧化钛钛白粉、颜料油漆填充料
- 主营：二氧化硅、乳化剂、分散剂、防水防油剂
- 主营：[]
- 主营：立德粉、钛白粉、氯化法钛白粉、锐钛型纳米钛白粉、氯化法型钛白粉
- 主营：白炭黑、胶粘剂、光触媒、纳米二氧化硅、锂电池涂料、粉末涂料密封胶
- 主营：氧化钼、半导体材料、钼粉、纳米、纳米钼、纳米钼粉、高纯钼粉、Mo
- 主营：钛白粉、通用级钛白粉、锐钛型钛白粉、二氧化钛、金红石型二氧化钛、二氧化钛TA-100、TR-215二氧化钛、TA-100二氧化钛、锐钛型二氧化钛、二氧化钛颜料、二氧化钛TR-215、TA-100钛白粉、TR-215钛白粉、钛白粉TR-215、金红石型钛白粉、锐钛型TA-100、TA-100、TR-215、锐钛钛白粉、颜料、无机颜料、TR-215金红石型、水性涂料、红金石型钛白粉、钛白粉TA-100
- 主营：钛白粉、金红石型钛白粉、锐钛型钛白粉、二氧化钛、高纯二氧化钛、耐高温二氧化钛、钛白粉厂家、高遮盖钛白粉、耐高温钛白粉、无机颜料、工业级钛白粉
- 主营：氧化铁颜料、沸石粉、铁砂、二氧化钛、电气石粉、氧化铁棕、除渣剂、橡胶粉、氧化铁灰、四氧化三铁、高岭土、玻璃粉、磁粉、氧化铁黑、滑石粉、减水剂、碳酸钙、萤石粉、红色颜料、氧化铁黄、硅微粉、耐火材料、氧化铁红、伊利石粉、氟化钙粉、贝壳粉
- 主营：硬脂酸、氧化锌、钛白粉、二氧化钛、石蜡、稳定剂、橡胶促进剂M、橡胶促进剂DM、橡胶促进剂TMTD、橡胶促进剂CZ、橡胶促进剂、乳胶促进剂
- 主营：二氧化钛、陶瓷粉体材料
- 主营：脱模剂、钛白粉、成核剂、润滑剂、镭雕助剂、抗氧剂、黑色母粒、扩链剂、增韧剂、阻燃剂、抗氧化剂、抗UV剂
- 主营：立德粉、钛白粉、金红石钛白粉、锐钛型钛白粉、出口钛白粉、进口钛白粉、氯化法钛白粉、硫酸钡
- 主营：钛白粉、异氟尔酮、油酸酰胺、二氧化钛、二辛酯、二丁酯、二甲基硅油、片碱、草酸、丙三醇、异丙醇、氨水、乙酸乙酯、氧化铁绿、氧化铁红、硬脂酸、马林酸树脂、钙粉、甘油、次氯酸钠、辛醇、乙醇、甲醇、荧光增白剂、甲基硅油
- 主营：钛白粉、金红石型钛白粉、锐钛型钛白粉、氯化法钛白粉、立德粉、硫酸钡、道路标线钛白粉、超细硫酸钡、高白立德粉、出口钛白粉、进口钛白粉、型材专用钛白粉、高白钛白粉、工业级钛白粉
- 主营：负离子液、水溶负离子、氧化铁颜料、二氧化钍、清除剂、碳酸钙、能量粉、粘土粉、陶土粉、金属硅、重钙粉、水溶负离子晶体、麦饭石粉、立德粉、石榴石砂、石英砂、蛭石、硫铁砂、火山石、石英粉、负离子粉、硅藻土、陶瓷球、钒铁、滑石粉
- 主营：药用级海藻糖、药用级蜂蜜、药用级甘油、药用级二甲基亚砜、药用级固体石蜡、药用级羟丙甲纤维素、药用级注射蔗糖、药用级羟苯乙酯、药用级硬脂酸
- 主营：L-半胱氨酸、L-苯丙氨酸、L-谷氨酸、二氧化钛厂家、L-蛋氨酸、维生素A、维生素B1、维生素B12、维生素B2、维生素B5、维生素B6、维生素C、维生素D3、维生素E、D-生物素、阿拉伯胶、刺槐豆胶、瓜尔豆胶、果胶 高酯果胶 低酯、海藻酸钠、黄原胶、结冷胶 低酰基结冷胶、聚丙烯酸钠、卡波姆
- 主营：碳酸钙、石英砂、金刚砂、滑石粉、矿粉、微硅粉、染色砂、陶瓷球、高岭土、鹅卵石
- 主营：轻质碳酸钙、4A沸石粉、膨润土、重晶石粉、配重铁粉 铁砂、氢氧化钙、红陶土 黄陶土、木粉、麦饭石粉、沸石粉、煅烧高岭土、水洗高岭土、滑石粉、负离子粉、硅藻土、白云石粉、玻璃鳞片、高铝耐火粉、蓝晶石粉