Ag/TiO 2-x Nx纳米管的光电催化性能

doi:10.3724/SP.J.1077.2010.00285

摘要/Abstract

摘要： 在0.5wt％NaF +1mol/L Na₂SO₄溶液中, 20V电压下, 通过阳极氧化的方法, 在纯Ti片表面制备出与基底垂直、排列整齐有序的TiO₂纳米管, 将制得的TiO₂纳米管在500℃、氨气的气氛下退火2h, 然后, 在0.5mol/L AgNO₃溶液中用12W的紫外灯照射24h, 制备出Ag/TiO _2-x N_x纳米管, 并用XRD, SEM 和 XPS进行表征. 实验结果显示, 在紫外光下, Ag/TiO _2-x N_x纳米管的光电催化降解效率比TiO2纳米管的光电催化降解效率提高了39.68%; 在可见光下, Ag/TiO _2-x N_x纳米管的光电催化降解效率比TiO _2-x N_x纳米管可见光光电催化的降解效率提高了12%. 可见光光电催化16h后, 初始浓度为10×10^-6 mol/L的亚甲基蓝降解率达到50.53%.

关键词: 阳极氧化, TiO₂纳米管, 掺杂, 光电催化降解

Abstract: High density, well ordered,vertically aligned and uniform titanium oxide nanotube arrays were fabricated on the surface of pure titanium sheet by direct electrochemical anodic oxidation under 20V in electrolyte of 0.5wt％NaF +1mol/L Na₂SO₄. Then TiO₂nano-tube array were annealed in ammonia for 2h, Ag nano-particles were deposited photocatalytically on the N-doped TiO₂ nanotube surface. XRD, SEM and XPS techniques were used to characterize titanium oxide nanotube arrays. Results show that photoelectrondegradation efficiency of Ag/TiO _2-x N_x nano-tubes under UV-light is about 39.68% higher than that of TiO2 nanotubes; and photoelectrodegradation efficiency of Ag/TiO _2-x N_x nano-tubes under visible light is 12% higher than that of TiO₂nano-tubes. After photoelectrondegradation under visible hight for 16h, the degradation rate of mathylene blue with initial concentration of 10×10^-6 mol/L is 50.53%.

Key words: anodic oxidation, TiO₂ nano-tubes, doping, photoelectrocatalytic degradation

中图分类号:

万斌,陈鸣波,周细应,王伟,李文戈. Ag/TiO _2-x N_x纳米管的光电催化性能[J]. 无机材料学报, DOI: 10.3724/SP.J.1077.2010.00285.

WAN Bin,CHEN Ming-Bo,ZHOU Xi-Ying,WANG Wei,LI Wen-Ge. Photoelectrocatalytic Performance of Ag/TiO_2-xN_x Nanotube[J]. Journal of Inorganic Materials, DOI: 10.3724/SP.J.1077.2010.00285.

参考文献

［1］Kudo A, Sekizawa M. Photocatalytic H₂evolution under visible light irradiation on Ni-doped ZnS photocatalyst. J.Chem. Commun., 2000: 1371-1372.

［2］Sayama K, Arakawa H. Effect of carbonate salt addition on the photocatalytic decomposition of liquid water over Pt-TiO₂ catalyst. J. Chem.Soc., Faraday Trans., 1997, 93(8): 1647-1655.

［3］Yamashita H, Harada M, Misaka J, et al. Degradation of propanol diluted in water under visible light irradiation using metal ion-implanted titanium dioxide photocatalysts. Journal of Photochemistry and Photobiology A:Chemistry, 2002,148(1/2/3):257-261.

［4］Hagfeldt A, Gratze M. Light-induced redox reactions in nanocrystalline systems. Chem. Rev., 1995, 95(1): 49-68.

［5］Asahi R, Morikawa T, Ohwaki T, et al. Visiblelight photocatalysis in nitrogen-doped titanium oxides. Science, 2001, 293(5528): 269-271.

［6］Spanhel L, Weller H, Henglein A. Photochemistry of semiconductor colloids. 22. Electron injection from illuminated CdS into attached TiO₂and ZnO particles. J. Am. Chem. Soc., 1987, 109(22): 6632-6635.

［7］Yang J C, Kim Y C, Shul Y G, et al. Characterization of photoreduced Pt/TiO₂ and decomposition of dichloroacetic acid over photoreduced Pt/TiO₂catalysts.Appl. Surf.Sci., 1997, 121/122: 525-529.

［8］Vamathevan V, Tse H, Amal R, et al. Effects of Fe ³⁺ and Ag⁺ ions on the photocatalytic degradation of sucrose in water. Catal. Today, 2001, 68(1/2/3): 201-208.

［9］Xi C, Chen Z, Li Q, et al. Effects of H⁺ , Cl^- and CH3COOH on the photocatalytic conversion of PtCl2-6 in aqueous TiO2 dispersion. Journal of Photochemistry and Photobiology A:Chemistry, 1995, 87 (3): 249-255.

［10］Li X Z, Li F B. Study of Au/Au ³⁺-TiO₂ photocatalysts toward visible photooxidation for water and wastewater treatment. Environ. Sci. Tech., 2001, 35(11): 2381-2387.

［11］Dalven R. Introduction to Applied Solid State Physics, 2nd ed. New York: Plenum Press, 1990, Chapter4:111-128.

［12］万斌, 沈嘉年, 陈鸣波, 等(WAN Bin, et al). 阳极氧化制备TiO₂ 纳米管及其光催化性能. 化学学报(Acta Chim. Sinica), 2008, 66(11): 1301-1306.

［13］万斌, 沈嘉年,陈鸣波, 等. 阳极氧化制备TiO₂ 纳米管及其光催化性能. 应用化学, 2008, 25(6): 665-668

[1]	孔国强, 冷明哲, 周战荣, 夏池, 沈晓芳. Sb掺杂O3型Na_0.9Ni_0.5Mn_0.3Ti_0.2O₂钠离子电池正极材料[J]. 无机材料学报, 2023, 38(6): 656-662.
[2]	杨颖康, 邵怡晴, 李柏良, 吕志伟, 王路路, 王亮君, 曹逊, 吴宇宁, 黄荣, 杨长. Cl掺杂对CuI薄膜发光性能增强研究[J]. 无机材料学报, 2023, 38(6): 687-692.
[3]	李悦, 张旭良, 景芳丽, 胡章贵, 吴以成. 铈掺杂硼酸钙镧晶体的生长与性能研究[J]. 无机材料学报, 2023, 38(5): 583-588.
[4]	齐占国, 刘磊, 王守志, 王国栋, 俞娇仙, 王忠新, 段秀兰, 徐现刚, 张雷. GaN单晶的HVPE生长与掺杂进展[J]. 无机材料学报, 2023, 38(3): 243-255.
[5]	王志强, 吴济安, 陈昆峰, 薛冬峰. 大尺寸Er,Yb:YAG单晶的生长及其性能[J]. 无机材料学报, 2023, 38(3): 329-334.
[6]	陆晨辉, 葛万银, 宋盼盼, 张盼锋, 徐美美, 张伟. 用于白光LED稀土Eu掺杂SiAlON基荧光粉的发光性能[J]. 无机材料学报, 2023, 38(1): 97-104.
[7]	王洋, 范广新, 刘培, 尹金佩, 刘宝忠, 朱林剑, 罗成果. 钾离子掺杂提高锂离子电池正极锰酸锂性能的微观机制[J]. 无机材料学报, 2022, 37(9): 1023-1029.
[8]	柳琪, 朱璨, 谢贵震, 王俊, 张东明, 邵刚勤. Ce掺杂SrMgF₄超结构多晶体的吸收/光致发光光谱[J]. 无机材料学报, 2022, 37(8): 897-902.
[9]	邹顺, 何夕云, 曾霞, 仇萍荪, 凌亮, 孙大志. 掺铋钇铁石榴石磁光陶瓷的热压烧结及其性能研究[J]. 无机材料学报, 2022, 37(7): 773-779.
[10]	焦博新, 刘兴翀, 全子威, 彭永姗, 周若男, 李海敏. L-精氨酸掺杂钙钛矿太阳电池性能研究[J]. 无机材料学报, 2022, 37(6): 669-675.
[11]	王新健, 朱逸璇, 张鹏, 杨文龙, 王挺, 郇宇. (Ba_0.85Ca_0.15)(Ti_0.9Zr_0.1-_xSn_x)O₃无铅压电陶瓷的相结构与压电性能[J]. 无机材料学报, 2022, 37(5): 513-519.
[12]	安琳, 吴淏, 韩鑫, 李耀刚, 王宏志, 张青红. 非贵金属Co_5.47N/N-rGO助催化剂增强TiO₂光催化制氢性能[J]. 无机材料学报, 2022, 37(5): 534-540.
[13]	李高然, 李红阳, 曾海波. 硼基材料在锂硫电池中的研究进展[J]. 无机材料学报, 2022, 37(2): 152-162.
[14]	娄许诺, 邓后权, 李爽, 张青堂, 熊文杰, 唐国栋. Ge掺杂MnTe材料的热电输运性能[J]. 无机材料学报, 2022, 37(2): 209-214.
[15]	刘鼎伟, 曾江涛, 郑嘹赢, 满振勇, 阮学政, 时雪, 李国荣. BiAlO₃掺杂PZT陶瓷的高压电性能和低电场应变滞后[J]. 无机材料学报, 2022, 37(12): 1365-1370.