摘要
以五氧化二铌和硝酸银为原料,利用固相法制备了Ag_(x)NbO_(2.5+x/2)(x=0.95,0.98,1.00,1.02和1.05)体系的粉体,通过XRD和UV-VIS分析表明:其结晶较完整、纯度较高,当Ag过量时其Ag_(x)NbO_(2.5+x/2)的禁带宽度(Eg)有所减小,达到2.71 eV。对亚甲基蓝溶液进行光催化降解实验,结果表明:在18W日光灯光照射200 min后,pH值为中性条件下,其过量的银即x=1.05的Ag_(x)NbO_(2.5+x/2)样品对亚甲基蓝溶液光催化降解效果最好,其降解率为82.10%。
Using Nb_(2)O_(5) and silver nitrate as raw materials,the powders of Ag_(x)NbO_(2.5+x/2)(x=0.95,0.98,1.00,1.02 and 1.05)was prepared,and the XRD and UV-vis analysis showed that the crystal was complete and the purity was higher.When the Ag content was excessive,the bandgap(Eg)of Ag_(x)NbO_(2.5+x/2) was reduced,which was 2.71 eV.The results showed that under the condition of the 18W fluorescent lamp and neutral pH value,the excessive silver of Ag_(x)NbO_(2.5+x/2) sample with x=1.05 had the best photocatalytic degradation effect for methylene blue solution,with a degradation rate of 82.10%.
作者
廖润华
肖林锋
王静
肖春林
曾婧文
李月明
王竹梅
LIAO Runhua;XIAO Linfeng;WANG Jing;XIAO Chunlin;ZENG Jingwen;LI Yueming;WANG Zhumei(School of Materials Science and Engineering,Jingdezhen Ceramic Institute,Jingdezhen 333403,China)
出处
《中国陶瓷》
CAS
CSCD
北大核心
2021年第3期29-33,共5页
China Ceramics
基金
江西省级大学生创新创业项目(No:213/20503056)
关键词
铌酸银
可见光催化
固相法
Niobium acid silver
Visible light catalysis
Solid phase method
