Photocatalytic degradation of indigo carmine by hydrothermally synthesized Bi2MoO6 in presence of EDTA

详细信息    查看全文

• 作者：C. Sánchez Trinidad ; A. Martínez-de la Cruz…
• 关键词：Bi2MoO6 ; Photocatalysis ; Indigo carmine ; Hydrothermal
• 刊名：Environmental Science and Pollution Research
• 出版年：2015
• 出版时间：January 2015
• 年：2015
• 卷：22
• 期：2
• 页码：792-799
• 全文大小：947 KB
• 参考文献：1. Bhakoo A, Bond GC, Rees RD, Sauerhammer B, Taylor AO, York I (1999) Supported binary oxide monolayers as selective oxidation catalysts: Bib class="a-plus-plus">2b>Mob class="a-plus-plus">3b>Ob class="a-plus-plus">12b>/TiOb class="a-plus-plus">2b>. Catal Lett 57:55-0 lass="external" href="http://dx.doi.org/10.1023/A:1019018825975" target="_blank" title="It opens in new window">CrossRef <br> 2. Bi J, Wu L, Li J, Li Z, Wang X, Fu X (2007) Simple solvothermal routes to synthesize nanocrystalline Bib class="a-plus-plus">2b>MoOb class="a-plus-plus">6b> photocatalysts with different morphologies. Acta Mater 55:4699-705 lass="external" href="http://dx.doi.org/10.1016/j.actamat.2007.04.034" target="_blank" title="It opens in new window">CrossRef <br> 3. He D, Ueda W, Moro-Oka Y (1992) Promotion effect of molybdate support on Bib class="a-plus-plus">2b>Mob class="a-plus-plus">3b>Ob class="a-plus-plus">12b> catalyst in the selective oxidation of propylene. Catal Lett 12:35-4 lass="external" href="http://dx.doi.org/10.1007/BF00767186" target="_blank" title="It opens in new window">CrossRef <br> 4. Kim N, Vannier RN, Grey CP (2005) Detecting different oxygen-ion jump pathways in Bib class="a-plus-plus">2b>WOb class="a-plus-plus">6b> with 1- and 2-dimensional ^{lass="a-plus-plus">17}O MAS NMR spectroscopy. Chem Mater 17:1952-958 lass="external" href="http://dx.doi.org/10.1021/cm048388a" target="_blank" title="It opens in new window">CrossRef <br> 5. Kubacka A, Fernández-García M, Colón G (2012) Advanced nanoarchitectures for solar photocatalytic applications. Chem Rev 112:1555-614 lass="external" href="http://dx.doi.org/10.1021/cr100454n" target="_blank" title="It opens in new window">CrossRef <br> 6. Li HH, Li KW, Wang H (2009) Hydrothermal synthesis and photocatalytic properties of bismuth molybdate materials. Mater Chem Phys 116:134-42 lass="external" href="http://dx.doi.org/10.1016/j.matchemphys.2009.02.058" target="_blank" title="It opens in new window">CrossRef <br> 7. López Cuéllar E, Martínez-de la Cruz A, Lozano Rodríguez KH, Ortiz Méndez U (2011) Preparation of γ-Bib class="a-plus-plus">2b>MoOb class="a-plus-plus">6b> thin films by thermal evaporation deposition and characterization for photocatalytic applications. Catal Today 166:140-45 lass="external" href="http://dx.doi.org/10.1016/j.cattod.2010.05.005" target="_blank" title="It opens in new window">CrossRef <br> 8. Martell AE, Motekaitis RJ, Fried AR, Wilson JS, MacMillan DT (1975) Thermal decomposition of EDTA, NTA, and nitrilotrimethylenephosphonic acid in aqueous solution. Can J Chem 53:3471-476 lass="external" href="http://dx.doi.org/10.1139/v75-498" target="_blank" title="It opens in new window">CrossRef <br> 9. Martínez-de la Cruz A, Obregón Alfaro S (2010) Synthesis and characterization of γ-Bib class="a-plus-plus">2b>MoOb class="a-plus-plus">6b> prepared by co-precipitation: photoassisted degradation of organic dyes under vis-irradiation. J Mol Catal A Chem 320:85-1 lass="external" href="http://dx.doi.org/10.1016/j.molcata.2010.01.008" target="_blank" title="It opens in new window">CrossRef <br> 10. Martínez-de la Cruz A, Obregón Alfaro S, López Cuéllar E, Ortiz Méndez U (2007) Photocatalytic properties of Bib class="a-plus-plus">2b>MoOb class="a-plus-plus">6b> nanoparticles prepared by an amorphous complex precursor. Catal Today 129:194-99 lass="external" href="http://dx.doi.org/10.1016/j.cattod.2007.08.004" target="_blank" title="It opens in new window">CrossRef <br> 11. Murugan R (2004) Investigation on ionic conductivity and Raman spectra of γ-Bib class="a-plus-plus">2b>MoOb class="a-plus-plus">6b>. Phys B 352:227-32 lass="external" href="http://dx.doi.org/10.1016/j.physb.2004.07.015" target="_blank" title="It opens in new window">CrossRef <br> 12. Xie L, Ma J, Xu G (2008) Preparation of a novel Bib class="a-plus-plus">2b>MoOb class="a-plus-plus">6b> flake-like nanophotocatalyst by molten salt method and evaluation for photocatalytic decomposition of rhodamine B. Mater Chem Phys 110:197-00 lass="external" href="http://dx.doi.org/10.1016/j.matchemphys.2008.01.035" target="_blank" title="It opens in new window">CrossRef <br> 13. Zhao X, Xu T, Yao W, Zhu Y (2009) Photodegradation of dye pollutants catalyzed by γ-Bib class="a-plus-plus">2b>MoOb class="a-plus-plus">6b> nanoplate under visible light irradiation. Appl Surf Sci 255:8036-040 lass="external" href="http://dx.doi.org/10.1016/j.apsusc.2009.05.010" target="_blank" title="It opens in new window">CrossRef <br>
• 刊物类别：Earth and Environmental Science
• 刊物主题：Environment<br>Environment<br>Atmospheric Protection, Air Quality Control and Air Pollution<br>Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollution<br>Industrial Pollution Prevention<br>
• 出版者：Springer Berlin / Heidelberg
• ISSN：1614-7499

文摘

Bi2b>MoO6b> oxide was synthesized by hydrothermal reaction in the presence of EDTA under different experimental conditions (time of reaction and EDTA concentration) in order to obtain materials with specific textural properties. It was determined that the addition of EDTA influences the final physical properties of Bi2b>MoO6b>. The photocatalytic activity of Bi2b>MoO6b> samples was evaluated in the degradation reaction of indigo carmine (IC) in aqueous solution under solar radiation type. The best results as photocatalyst were obtained with the sample hydrothermally synthesized at 150 oC for 4h in presence of a 0.031 M EDTA solution. This sample was able to whiten a solution of IC in a 94% after 120 min of lamp irradiation with t 1/2b>--1?min. In general, the samples prepared with lower concentrations of EDTA were the best photocatalysts. A gradual decrease in the activity was observed in the samples prepared with the same EDTA concentration as was increased in the reaction time. Beyond differences in morphology and textural properties of the samples prepared, the presence of EDTA by-products on the samples and the decomposition degree of it were important factors in determining the activity of the photocatalysts. Analysis of total organic carbon (TOC) of samples irradiated for 100?h confirmed that Bi2b>MoO6b> oxide is able to mineralize the complex organic molecule of IC to CO2b> and H2b>O in 55?%.