摘要
选用六水合硝酸镧(La(NO_3)_3·6H_2O)及六水合硝酸钴(Co(NO_3)_2·6H_2O)为掺杂剂,以钛酸四丁酯(TBOT)为原料,采用水热法制备了稀土La及过渡金属Co共掺杂的二氧化钛(TiO_2)复合光催化剂,并通过XRD、SEM、EDS、FT-IR表征手段对样品进行了分析。以甲基橙为模型污染物,研究La及Co共掺杂量对复合光催化剂活性的影响。结果表明:通过水热法制备的催化剂为球型结构的金红石相,掺杂La和Co并未改变TiO_2的晶体结构;(La/Co)/TiO_2复合材料对甲基橙的降解能力相比纯TiO_2有显著提高,当La及Co的共掺杂量为1%(mol,摩尔含量)时,降解效果最好,最高降解率可达到98.2%。
Preparation of TiO2 photocatalyst Co-doped with the rare earth La and transition metal Co by hydrother- mal method with TBOT as raw material, La（NO3 ）3· 6 H2O and Co（NO3 ）2· 6 H2 O as doping agent. , and the catalysts were characterized by XRD,SEM,EDS and FT-IR. Using methyl orange as a model pollutant, the effects of co-doping elements （La/Co） on the structure and performance of experimental catalysts were evaluated. The results showed that the catalysts prepared by hydrothermal method was formed in the ruffle phase with a sphericaI structure, doping La and Co did not change the crystal structure of TiO2. It showed that doping La and Co enhanced the catalyst activity. The results indicated that （La/Co）/TiO2 composites prepared with 1% of La and Co had the greatest photocatalytic activity, the degradation rate of methylorange was 98.2%.
作者
李沙沙
吴刚
王红艳
史洪伟
Li Shasha Wu Gang Wang Hongyan Shi Hongwei(Anhui Key Laboratory of Spin Electron and Nanomaterials, Suzhou 234000 School of Chemistry ＆ Chemical Engineering,Suzhou University, Suzhou 234000)
出处
《化工新型材料》
CAS
CSCD
北大核心
2016年第10期113-115,共3页
New Chemical Materials
基金
国家自然科学基金(21272008)
自旋电子与纳米材料安徽省重点实验室(2014YKF47)
安徽省高校自然科学研究项目(KJ2016A888)
国家级大学生创新训练项目(201610379019)
宿州学院产学研项目(2015hx024)
关键词
稀土镧
过渡金属钴
掺杂
光催化
rare earth La, transition metal Co, doped, photocatalytic activity
