钕负载二氧化钛-炭杂化气凝胶的制备及其光催化性能

邵霞; 潘峰; 郑励; 张睿; 张文雅

doi:10.1016/S1872-5805(18)60329-4

钕负载二氧化钛-炭杂化气凝胶的制备及其光催化性能

doi: 10.1016/S1872-5805(18)60329-4

邵霞¹,
潘峰²,
郑励¹,
张睿^1,,
张文雅¹

1.
上海应用技术大学, 材料科学与工程学院, 上海 201418;
2.
上海应用技术大学, 化学与环境工程学院, 上海 201418

基金项目: 上海地方高校能力建设项目（12160503600）；上海市一流学科建设项目（J201212）；国家自然科学基金项目（U1332107）；上海应用技术大学复合材料重点学科建设项目（10210Q140001）.

详细信息

作者简介:
邵霞,讲师.E-mail:shaoxia@sit.edu.cn

通讯作者:
张睿,教授.E-mail:zhangrui@sit.edu.cn

中图分类号: TB333
计量
- 文章访问数: 385
- HTML全文浏览量: 84
- PDF下载量: 307
- 被引次数: 0
出版历程
- 收稿日期: 2018-01-23
- 录用日期: 2018-04-28
- 修回日期: 2018-04-10
- 刊出日期: 2018-04-28

Nd-doped TiO₂-C hybrid aerogels and their photocatalytic properties

1.
School of Materials Science and Engineering, Shanghai Institute of Technology, Shanghai 201418, China;
2.
School of Chemical and Environmental Engineering, Shanghai Institute of Technology, Shanghai 201418, China

Funds: Capacity Building Program of Shanghai Local Universities (12160503600);The First-Class Discipline Construction Fund of Shanghai Municipal Education Commission (J201212);Natinal Natural Science Foundation of China (U1332107);Key Discipline Construction Fund of Composite Materials of Shanghai Institute of Technology (10210Q140001).

摘要

摘要: 采用溶胶凝胶法和浸渍法制备了不同钕掺量负载的二氧化钛/炭（TiO₂-C）杂化气凝胶。通过XRD，SEM，FTIR，XPS及氮气吸附脱附等温线表征了样品的微观结构、形貌及表面元素状态。在500 W汞灯照射下，以亚甲基蓝为目标降解物，研究了样品的光催化活性。结果表明，所制样品为不规则颗粒，钕的掺杂抑制了TiO₂颗粒的生长，TiO₂为锐钛矿型且炭呈现不定型态，同时Nd³⁺进入TiO₂内形成Ti-O-Nd键。在紫外光波段，样品具有较强的吸收性能，表现出紫外光照下对亚甲基蓝良好的光催化性能。当钕的负载量为3%-4%时，样品具有最佳的光催化活性，此时亚甲基蓝在紫外光照160 min后被完全降解。
- 光催化性 /
- 降解 /
- 钕负载 /
- 亚甲基蓝 /
- 溶胶凝胶法
Abstract: Nd-doped TiO₂-C hybrid aerogels with different Nd doping levels were prepared by a combined sol-gel and impregnation method. The microstructure, morphology and photocatalytic activities of the samples were investigated by XRD, SEM, FTIR, XPS, nitrogen adsorption and the photocatalytic degradation of methylene blue (MB) under UV irradiation. Results showed that the samples are composed of irregular-shaped nanoparticles and the Nd dopant inhibits their growth. The TiO₂ in the samples is anatase, the carbon is amorphous and Nd³⁺ is in a Ti-O-Nd bond form. The samples had strong absorption in the ultraviolet region and exhibited good degradation activity for MB in aqueous solutions under UV light. The best activity was achieved when the ratio of Nd to Ti is 3-4 wt%, in which case MB was completely degraded under UV irradiation for 160 min.
- Photo-catalysts /
- Degradation /
- Nd-doped /
- MB /
- Sol-gel method

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参考文献(32)

James L G, John D S, Clemens B, et al. Highly efficient formation of visible light tunable TiO_2-xN_x photocatalysts and their transformation at the nanoscale[J]. ChemInform, 2006, 35:1230-1240.

Baia L, Diamandescu L, Barbu-Tudoran L, et al. Efficient dual functionality of highly porous nanocomposites based on TiO₂ and noble metal particles[J]. Journal of Alloys & Compounds, 2011, 509:2672-2678.

Sharma M, Jain T, Singh S, et al. Photocatalytic degradation of organic dyes under UV-Visible light using capped ZnS nanoparticles[J]. Solar Energy, 2012, 86:626-633.

Martha M, Wilson F. Remediation of pesticide contaminated soil using TiO₂ mediated by solar light[J]. Catalysis Today, 2002, 76:201-207.

Ramacharyulu P, Prasad G, Ganesan K, et al. Photocatalytic decontamination of sulfur mustard using titania nanomaterials[J]. Journal of Molecular Catalysis A Chemical, 2012, s353-354:132-137.

Sahoo C, Gupta A K. Characterization and photocatalytic performance evaluation of various metal ion-doped microstructured TiO₂ under UV and visible light[J]. Journal of Environmental Science and Health, Part A, 2015, 50:659-668.

Wahi R K, William W Y, Liu Y P, et al. Photodegradation of congo red catalyzed by nanosized TiO₂[J]. Journal of Molecular Catalysis A Chemical, 2005, 242:48-56.

Anuja B, Mrinal R P, Anjali A, et al. Surface modified Nd doped TiO₂ nanoparticles as photocatalysts in UV and solar light irradiation[J]. Solar Energy, 2013, 91:111-119.

Singh D P, Ali N. Synthesis of TiO₂ and CuO nanotubes and nanowires[J]. Science of Advanced Materials, 2010, 2:295-335.

Periyat P, Suresh C P, Declan E, et al. Improved high-temperature stability and sun-light-driven photocatalytic activity of sulfur-doped anatase TiO₂[J]. J.Phys.Chem.C, 2008, 112:7644-7652.

Yang X, Ma F, Li K, et al. Mixed phase titania nanocomposite codoped with metallic silver and vanadium oxide:new efficient photocatalyst for dye degradation[J]. Journal of Hazardous Materials, 2010, 175:429-38.

Hoffmann M R, Choi W Y, Bahnemann. Environmental applications of semiconductor photocatalysis[J]. Chemical Reviews, 1995, 95:69-96.

Grabowska E, Reszczyńska J, Zaleska A. Mechanism of phenol photodegradation in the presence of pure and modified-TiO₂:A review[J]. Water Research, 2012, 46:5453-71.

Obregon S, Kubacka A, Fernandez-Garcia M, et al. High-performance Er³⁺-TiO₂ system:Dual up-conversion and electronic role of the lanthanide[J]. Journal of Catalysis, 2013, 299:298-306.

de la Cruz Romero D, Torres Torres G, Arévalo J C. et al. Synthesis and characterization of TiO₂ doping with rare earths by sol-gel method:photocatalytic activity for phenol degradation[J]. Journal of Sol-Gel Science and Technology, 2010, 56:219-226.

Du J M, Chen H J, Yang H, et al. A facile sol-gel method for synthesis of porous Nd-doped TiO₂ monolith with enhanced photocatalytic activity under UV-Vis irradiation[J]. Nanotechnology & Precision Engineering, 2013, 182:87-94.

Zhang Q W, Wang J S, Tang Q, et al. Preparation of nitrogen-doped titania with high visible light induced photocatalytic activity by mechanochemical reaction of titania and hexamethylenetetramine[J]. Journal of Materials Chemistry, 2003, 13:2996-3001.

Shao X, Lu W C, Zhang R. et al. Enhanced photocatalytic activity of TiO₂-C hybrid aerogels for methylene blue degradation[J]. Scientific Reports, 2013, 3:3018.

Carolina S M, Javier R D, Carlos J L, et al. Low concentration Fe-doped alumina catalysts using sol-gel and impregnation methods:the synthesis, characterization and catalytic performance during the combustion of trichloroethylene[J]. Materials 2014, 7:2062-2086.

Pavasupree, Sorapong, et al. Synthesis of titanate, TiO₂ (B), and anatase TiO₂ nanofibers from natural rutile sand[J]. Journal of Solid State Chemistry, 2005, 24:3110-3116.

Bart R, Karl C G, Sandeep P, et al. Enhanced efficiency and stability of perovskite solar cells through Nd-doping of mesostructured TiO₂[J]. Advanced Energy Materials, 2016, 6:1501868.

Xu A W, Gao Y, Liu H Q, The preparation, characterization, and their photocatalytic activities of rare-earth-doped TiO₂ nanoparticles[J]. Journal of Catalysis, 2002, 207:151-157.

Meng Z H, Wan L H, Zhang L J, et al. One-step fabrication of Ce-N-codoped TiO₂ nano-particle and its enhanced visible light photocatalytic performance and mechanism[J]. Journal of Industrial & Engineering Chemistry, 2014, 20:4102-4107.

Zhang X H, Luo L T, Duana Z H, Preparation and application of Ce-doped mesoporous TiO₂ oxide[J]. Reaction Kinetics, Mechanisms and Catalysis, 2005, 87:43-50.

Biswajit C, Bikash B, Amarjyoti C, Ce-Nd codoping effect on the structural and optical properties of TiO₂ nanoparticles[J]. Materials Science & Engineering B, 2013, 178:239-247.

Erdem B, Hunsicker R A, Simmons G W, et al. XPS and FTIR surface characterization of TiO₂ particles used in polymer encapsulation[J]. Langmuir, 2001. 17:2664-2669.

Wu Y M, Zhang J L, Xiao L,et al. Properties of carbon and iron modified TiO₂ photocatalyst synthesized at low temperature and photodegradation of acid orange 7 under visible light[J]. Applied Surface Science, 2010. 256:4260-4268.

Liu J K, An T C, Li G Y, et al. Preparation and characterization of highly active mesoporous TiO₂ photocatalysts by hydrothermal synthesis under weak acid conditions[J]. Microporous & Mesoporous Materials, 2009, 124:197-203.

Shi H X, Zhang T Y, An T C, et al. Enhancement of photocatalytic activity of nano-scale TiO₂ particles co-doped by rare earth elements and heteropolyacids[J]. Journal of Colloid & Interface Science, 2012, 380:121-127.

Pan L, Zou J J, Zhang X, et al. Water-mediated promotion of dye sensitization of TiO₂ under visible light[J]. Journal of the American Chemical Society, 2011, 133:10000.

Mills A, An overview of the methylene blue ISO test for assessing the activities of photocatalytic films[J]. Applied Catalysis B Environmental, 2012, 128:144-149.

Du J, Gu X, Wu Q, et al. Hydrophilic and photocatalytic activities of Nd-doped titanium dioxide thin films[J]. Transactions of Nonferrous Metals Society of China, 2015, 25:2601-2607.

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