山东化工
山東化工
산동화공
SHANDONG CHEMICAL INDUSTRY
2011年
12期
4-6
,共3页
可见光催化剂%金红石型纳米TiO2%低温
可見光催化劑%金紅石型納米TiO2%低溫
가견광최화제%금홍석형납미TiO2%저온
visible -light -active photocatalyst%nanosize futile titania%low temperature
对TiO2纳米晶进行了研究。采用”低温水热法”在室温附近的低温下处理无定型的TiO2前驱体制备出了纳米TiO2，制备温度比传统的水热法和溶胶一凝胶法要低很多，在低于50℃的温度下即可得到金红石型TiO2。研究了TiO2的相组成与温度的关系以及TiO2的形貌。实验表明，在波长大于400nm的可见光照射下，棒状的金红石型TiO2具有良好的可见光光催化性能。
對TiO2納米晶進行瞭研究。採用”低溫水熱法”在室溫附近的低溫下處理無定型的TiO2前驅體製備齣瞭納米TiO2，製備溫度比傳統的水熱法和溶膠一凝膠法要低很多，在低于50℃的溫度下即可得到金紅石型TiO2。研究瞭TiO2的相組成與溫度的關繫以及TiO2的形貌。實驗錶明，在波長大于400nm的可見光照射下，棒狀的金紅石型TiO2具有良好的可見光光催化性能。
대TiO2납미정진행료연구。채용”저온수열법”재실온부근적저온하처리무정형적TiO2전구체제비출료납미TiO2，제비온도비전통적수열법화용효일응효법요저흔다，재저우50℃적온도하즉가득도금홍석형TiO2。연구료TiO2적상조성여온도적관계이급TiO2적형모。실험표명，재파장대우400nm적가견광조사하，봉상적금홍석형TiO2구유량호적가견광광최화성능。
The aim was to study on the titania nanocrystals. Titania nanocrystals were prepared by a ＂low temperature hydrothermal process＂ in liquid media. The crystallization of amorphous precursor could proceed at low temperature around room temperature, which was much lower than those of conventional hydrothermal process and Sol - Gel reactions. The rutile formed at low temperature below 50℃, The phase composition, microstructure, and morphology were also studied, The phase composition of titania changed significantly depending on the temperatures. Experiments showed that the needle -like nanosize rutile crystals possessed high photocatalytic activities under visible light irradiation of wavelength 〉 400nm.
