以海藻酸钠为基体的Ag/AgBr/TiO2整体式光催化剂的高效制备及其光催化性能

doi:10.15541/jim20160481

无机材料学报 ›› 2017, Vol. 32 ›› Issue (6): 637-642.DOI: 10.15541/jim20160481

以海藻酸钠为基体的Ag/AgBr/TiO₂整体式光催化剂的高效制备及其光催化性能

童琴¹, 董亚梅¹, 严良¹, 何丹农^{1, 2}

(1. 纳米技术及应用国家工程研究中心, 上海 200241; 2. 上海交通大学材料科学与工程学院, 上海 200240)

收稿日期:2016-08-29 修回日期:2016-11-03 出版日期:2017-06-20 网络出版日期:2017-05-27
作者简介:童琴(1986–), 女, 硕士研究生. E-mail: tongqin_7557@163.com
基金资助:
国家重大科学研究计划(2015CB931902);上海市青年科技启明星计划(B类)(16QB1402200)

High-efficient Synthesis and Photocatalytic Properties of Ag/AgBr/TiO₂ Monolithic Photocatalysts Using Sodium Alginate as Substrate

TONG Qin¹, DONG Ya-Mei¹, YAN Liang¹, HE Dan-Nong^{1, 2}

(1. National Engineering Research Center for Nanotechnology, Shanghai 200241, China; 2. School of Materials Science and Engineering, Shanghai Jiao Tong University, Shanghai 200240, China)

Received:2016-08-29 Revised:2016-11-03 Published:2017-06-20 Online:2017-05-27
About author:TONG Qin. E-mail: tongqin_7557@163.com
Supported by:
National Basic Research Program of China (2015CB931902);Shanghai Science and Technology Development Funds (16QB1402200)

摘要/Abstract

摘要：

以海藻酸钠为基体制备出尺寸均一的整体式光催化剂SA-Ag/AgBr/TiO₂, 通过SEM、TEM、HRTEM、XPS、FT-IR以及BET等手段对产物形貌、结构、比表面积和光学性质进行表征, 并测定了其对罗丹明B(RhB)溶液的光催化性能。结果表明, 整体式光催化剂SA12-Ag/AgBr/TiO₂(Ag/AgBr/TiO₂催化剂的质量分数为12%)的结构稳定, 且具有良好的光催化活性, 即在紫外光照60 min内, RhB溶液降解完全, 在可见光照120 min下RhB的降解率可达到54.1%, 且在5次重复试验中仍保持96%以上的催化活性, 稳定性良好。这种整体式光催化剂有效解决了粉体材料难回收、二次污染和固定化后光催化效率低等问题。

关键词: 海藻酸钠, Ag/AgBr/TiO₂复合光催化剂, 整体式光催化剂, 可见光

Abstract:

SA-Ag/AgBr/TiO₂ monolithic photocatalysts with uniform particle size distribution was synthesized by using sodium alginate as a substrate. Its structure and morphology were characterized by XRD, XPS, SEM, TEM, and HRTEM. The optical properties and the surface area of the SA-Ag/AgBr/TiO₂ monolithic photocatalysts were characterized by FT-IR and BET. The as-prepared photocatalyst with good stability exhibited enhanced photocatalytic performance for degradation of RhB solution under both UV and visible light. The SA-Ag/AgBr/TiO₂ monolithic photocatalyst with 12wt% Ag/AgBr/TiO₂ display optimum properties i.e. about 100% degradation rate for the RhB solution for 60 min under UV irradiation and 54.1% degradation rate for the RhB solution under visible light irradiation for 120 min. Besides, after 5 cycles, the RhB degradation rate still keeps higher than 96%, showing an excellent reusability of the photocatalysts. The as-prepared SA-Ag/ AgBr/TiO₂ monolithic photocatalysts may effectively solve the problems including photocatalytic activity, secondary pollution and photocatalyst recycling.

Key words: sodium alginate, Ag/AgBr/TiO₂ photocatlyst, monolithic photocatalysts, visible light

中图分类号:

O643

童琴, 董亚梅, 严良, 何丹农. 以海藻酸钠为基体的Ag/AgBr/TiO₂整体式光催化剂的高效制备及其光催化性能[J]. 无机材料学报, 2017, 32(6): 637-642.

TONG Qin, DONG Ya-Mei, YAN Liang, HE Dan-Nong. High-efficient Synthesis and Photocatalytic Properties of Ag/AgBr/TiO₂ Monolithic Photocatalysts Using Sodium Alginate as Substrate[J]. Journal of Inorganic Materials, 2017, 32(6): 637-642.

图/表 6

图1 Ag/AgBr/TiO2纳米晶的TEM(a)和HRTEM(b)照片

Fig. 1 TEM (a) and HRTEM (b) images of Ag/AgBr/TiO2 NCs

图2 以海藻酸钠为基体的整体式Ag/AgBr/TiO2光催化剂的不同倍率SEM照片

Fig. 2 Different magnification SEM images of the SA-Ag/AgBr/TiO2 monolithic photocatalysts

图3 Ag/AgBr/TiO2纳米晶的XRD图谱

Fig. 3 XRD pattern of Ag/AgBr/TiO2 NCs

图4 Ag/AgBr/TiO2纳米晶(a)和Ag3d(b)的XPS图谱

Fig. 4 XPS spectra of Ag/AgBr/TiO2 NCs (a) and Ag3d (b)

图5 不同Ag/AgBr/TiO2催化剂含量的海藻酸钠型整体式光催化剂的FT-IR图谱

Fig. 5 FT-IR spectra of the SA-Ag/AgBr/TiO2 monolithic photocatalysts with different contents of Ag/AgBr/TiO2

图6 不同Ag/AgBr/TiO2催化剂含量的海藻酸钠型整体式催化剂SA-Ag/AgBr/TiO2在紫外光(a)和可见光(b)下对RhB光催化降解曲线

Fig. 6 RhB photocatalytic degradation by the SA-Ag/AgBr/TiO2 monolithic photocatalysts with different contents of Ag/AgBr/TiO2 under UV irradiation (a) and visiblelight irradiation (b)

参考文献 23

[1]	LIU QIANG, ZHANG ZHI-BO, DONG CHANG-QING, et al.Improved visible-light photocatalytic activity of Bi-crystalline mesoporous titania codoped with carbon and silver.Journal of Inorganic Materials, 2014, 29(12): 1333-1338.
[2]	WANG HUI-LEI, LIU XIAO-HENG.Preparation of silver nanoparticle loaded mesoporous TiO2 and its photocatalytic property.Journal of Inorganic Materials, 2016, 31(5): 555-560.
[3]	WANG XIAO-PING, TANG YU-XIN, CHEN ZHONG, et al.Highly stable heterostructured Ag-AgBr/TiO2 composite: a bifunctional visible-light active photocatalyst for destruction of ibuprofen and bacteria.Journal of Materials Chemistry, 2012, 22(43): 23149-23158.
[4]	MAI LI-XIANG, WANG DA-WEI, ZHANG SHENG, et al.Synthesis and bactericidal ability of Ag/TiO2, composite films deposited on titanium plate.Applied Surface Science, 2010, 257(3): 974-978.
[5]	LANGLET M, KIM A, AUDIER M, et al.Sol-Gel preparation of photocatalytic TiO2, films on polymer substrates. Journal of Sol-Gel Science and Technology, 2002, 25(3): 223-234.
[6]	CHEN LIN, YANG SU-DONG, MÄDER EDITH, et al. Controlled synthesis of hierarchical TiO2 nanoparticles on glass fibres and their photocatalytic performance.Dalton Transactions, 2014, 43(33): 12743-12753.
[7]	FENG LI-LI, ZHAO WEI, LIU YANG, et al.Photocatalytic degradation of Rhodamine B by nanocrystalline TiO2 loaded into MCM-41 molecular sieves. Acta Phys. -Chim. Sin., 2009, 25(07): 1347-1351.
[8]	SU HUA-ZHI, PENG CHENG, WU JIAN-QING.A review of titanium dioxide photocatalytic material and its application in ceramics.Foshan Ceramics, 2016, 1(234): 1-9.
[9]	ORTELLI S, BLOSI M, ALBONETTI S, et al.TiO2 based nano-photocatalysis immobilized on cellulose substrates.Journal of Photochemistry & Photobiology A Chemistry, 2013, 276: 58-64.
[10]	RANOGAJEC JONJAUA, RADEKA MIROSLAVA, BAČKALIĆ ZORAN, et al. Photocatalytic and superhydrophilic phenomena of TiO2 coated clay roofing tiles.Chemical Industry & Chemical Engineering Quarterly, 2010, 16(2): 117-126.
[11]	WU SU-JUAN, WANG CONG, CUI YIN-FANG, et al.BiOCl nano/microstructures on substrates: Synthesis and photocatalytic properties.Materials Letters, 2011, 65(9): 1344-1347.
[12]	YANG MYUNG, HONG SEONG-HYEON.Gas sensing property of ITO/SnO2 hetero-structure deposited by RF magnetron sputter.Journal of Electrochemical Society, 2010, 157(11): J392-J396.
[13]	CORDER-ARIAS LUIS, BOCCACCINI ALDO R, VIRTANEN SANNAKAISA.Electrochemical behavior of nanostructured TiO2/ alginate composite coating on magnesium alloy AZ91D via electrophoretic deposition.Surface & Coatings Technology, 2015, 265: 212-217.
[14]	LI YOU-JI, LI XIAO-DONG, LI JUN-WEN, et al.Effects of active carbon carrier on phase transform and crystallite growth of titanium dioxide in TiO2/AC.Journal of Inorganic Materials, 2005, 20(2): 291-298.
[15]	KIM DONG SEOG, PARK YOUNG SEEK.Photocatalytic decol-orization of Rhodamine B by immobilized TiO2 onto silicone sealant.Chemical Engineering Journal, 2006, 116(2): 133-137.
[16]	RADEKA M, MARKOV S, LONČAR, E, et al. Photocatalytic effects of TiO2, mesoporous coating immobilized on clay roofing tiles.Journal of the European Ceramic Society, 2014, 34(1): 127-136.
[17]	YANG NA, LIU YI-JUN, FENG YUN-FANG.Preparation and characterization of thermosensitive photocatalyst: poly (N-isopropylacrylamide)/Nano-TiO2 hydrogel.Journal of Zhejiang Institute of Science and Technology, 2010, 27(4): 543-547.
[18]	HARAGUCHI KAZUTOSHI, TAKEHISA TORU, FAN SIMON.Effects of clay content on the properties of nanocomposite hydrogels composed of poly(N-isopropylacrylamide) and clay.Macromolecules, 2002, 35(27): 10162-10171.
[19]	HOU YANG, LI XIN-YONG, ZHAO QI-DONG, et al.TiO2 nanotube/Ag-AgBr three-component nanojunction for efficient photoconversion.Journal of Materials Chemistry, 2011, 21(44): 18067-18076.
[20]	YANG YU-XIN, GUO WAN, GUO YING-NA, et al.Fabrication of Z-scheme plasmonic photocatalyst Ag@AgBr/g-C3N4, with enhanced visible-light photocatalytic activity.Journal of Hazardous Materials, 2014, 271c(5): 150-159.
[21]	YU YI-JUN, ZHI-HUAI SI, CHEN SHUANG-JUN, et al.Facile synthesis of polyaniline-sodium alginate nanofibers.Langmuir, 2006, 22(8): 3899-3905.
[22]	LE-TIEN CANH, MILLETTE MATHIEU, LACROIX MONIQUE, et al.Modified alginate matrices for the immobilization of bioactive agents. Biotechnology &Applied Biochemistry, 2004, 39(2): 189-198.
[23]	HUANG R Y M, PAL R, MOON G Y. Characteristics of sodium alginate membranes for the pervaporation dehydration of ethanol-water and isopropanol-water mixtures.Journal of Membrane Science, 1999, 160(1): 101-113.

以海藻酸钠为基体的Ag/AgBr/TiO₂整体式光催化剂的高效制备及其光催化性能

High-efficient Synthesis and Photocatalytic Properties of Ag/AgBr/TiO₂ Monolithic Photocatalysts Using Sodium Alginate as Substrate

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