摘要
在醋酸溶剂中,以氢氟酸和氨水活化得到的铌酸(Nb2O5·nH2O)为前驱物,溶剂热合成出一种纳米线状结构氧化铌,结合在400℃下焙烧样品1h,制备了Nb2O5纳米棒。通过XRD、SEM、TEM分析表明,制备的Nb2O5纳米棒为六方晶相结构,晶型单一,沿c轴[001]方向结晶生长。以亚甲基蓝和罗丹明B为例,测试焙烧后的Nb2O5纳米棒光催化活性,发现Nb2O5纳米棒对两种有机染料均具有较高的光催化效果;染料浓度增高,催化效率降低。同时发现,由于存在对亚甲基蓝强吸附作用,所以对亚甲基蓝移除效果优于对罗丹明B的移除效果。
Nb205 nanorods were fabricated by acetic acid solvothermal route combined with heat treatment of as- obtained one dimensional（1D） niobium oxide nanowires at 400℃ for lb. XRD, SEM, TEM analyses indicate that Nb205 nanorods prepared by calcination have hexagonal phase and crystalize along[001 ] direction. These Nb205 nanorods can be used as catalysis for the degradation of methylene blue （ MB ） and rbodamine B （ RhB ） aqueous solution under UV light illumination. Experimental results show that Nb205 nanorods possess well photoeatalytic activity for the degradation of both MB and RhB under UV light, which is of great interest in environmental purification. Photocatalytic efficiency decreases with the increase of dye concentration, and the removal effect of MB is better than tnat of RhB due to strong adsorption of MB onto Nb205 nanorods.
出处
《粉末冶金技术》
CAS
CSCD
北大核心
2014年第1期7-13,共7页
Powder Metallurgy Technology
基金
中国博士后科学基金资助项目(2012M510005)
北京市博士后工作经费资助项目(2012ZZ-10)
国家杰出青年基金资助项目(51225402)
国家自然科学基金资助项目(51002004)
北京创新人才项目(PHR201006101)
北京教委基金资助项目(KZ201010005001
KM201110005003)
