以吡啶、丙磺酸内酯和钨磷酸为原料,合成了离子液体型多金属氧酸盐(POM-IL)化合物[PyPS]nH3-nPW12O40·xH2O(n=1,2,3),用FT-IR、UV-Vis、1H NMR和元素分析等对其进行了表征.结果显示,POM-IL化合物仍保持相应钨磷酸的Keggin结构,并存在吡啶丙磺酸的特征谱带,熔点均高于130℃,且随有机阳离子含量增加,熔点降低.在紫外光下,n为1和2的POM-IL对水溶液中甲基橙的光催化降解活性与钨磷酸相似;在可见光下,POM-IL对水溶液中靛红的光催化降解活性相近,且均远高于钨磷酸.
参考文献
[1] | Mylonas A,Hiskia A,Papaconstantinou E.Contribution to Water Purification Using Polyoxometalates.Aromatic Derivatives,Chloroacetic Acid[J].J Mol Catal A:Chem,1996,114 (1/3):191-200. |
[2] | DENG Lingjuan,YANG Chun.Synthesis of SnⅡ-Substituted Keggin-type Polyoxometalates and Their Photocatalytic Performance[J].Chinese J Appl Chem,2007,24(2):139-143 (in Chinese).邓玲娟,杨春.SnⅡ取代的Keggin型多金属氧酸盐的合成及光催化性能[J].应用化学,2007,24(2):139-143. |
[3] | Yang Y,Guo Y X,Hu C W,et al.Synergistic Effect of Keggin-type[Xn+ W11O39](12-n)-and TiO2 in Macroporous Hybrid Materials[Xn + W11O39](12-n)--TiO2 for the Photocatalytic Degradation of Textile Dyes[J].J Mater Chem,2003,13 (7):1686-1694. |
[4] | LI Li,GUO Yixing,ZHOU Ping,et al.Preparation of Porous H3 PW12 O40/TiO2 and Its Photocatalytic Activity for Degradation of Aqueous Dyes under Visible-Light[J].Chinese J Catal,2005,26 (3):209-215 (in Chinese).李莉,郭一荇,周萍,等.孔道结构H3 PW12O40/TiO2的制备及其可见光光催化降解水溶性染料的性能[J].催化学报,2005,26(3):209-215. |
[5] | Chen C C,Zhao W,Lei P X,et al.Photosensitized Degradation of Dyes in Polyoxometalate Solutions versus TiO2 Dispersions under Visible-Light Irradiation:Mechanistic Implications[J].Chem Eur J,2004,10 (8):1956-1965. |
[6] | Chen C C,Wang Q,Lei P X,et al.Photodegradation of Dye Pollutants Catalyzed by Porous K3PW12 O40 under Visible Irradiation[J].Environ Sci Technol,2006,40(12):3965-3970. |
[7] | Hiskia A,Mylonas A,Papaconstantinou E.Comparison of the Photoredox Properties of Polyoxometalates and Semiconducting Particles[J].Chem Soc Rev,2001,30(1):62-69. |
[8] | Huang W L,Zhu W S,Li H M,et al.Heteropolyanion-Based Ionic Liquid for Deep Desulfurization of Fuels in Ionic Liquids[J].Ind Eng Chem Res,2010,49(19):8998-9003. |
[9] | Leng Y,Wang J,Zhu D R,et al.Sulfonated Organic Heteropolyacid Salts:Recyclable Green Solid Catalysts for Esterifications[J].J Mol Catal A:Chem,2009,313(1/2):1-6. |
[10] | Li K X,Chen L,Wang H L,et al.Heteropolyacid Salts as Self-Separation and Recyclable Catalysts for Transesterification of Trimethylolpropane[J].Appl Catal A:Gen,2011,392(1/2):233-237. |
[11] | Zhang W H,Leng Y,Zhu D R,et al.Phosphotungstic Acid Salt of Triphenyl (3-sulfopropyl) Phosphonium:An Efficient and Reusable Solid Catalyst for Esterification[J].Catal Commun,2009,11 (3):151-154. |
[12] | Leng Y,Wang J,Zhu D R,et al.Heteropolyanion-Based Ionic Liquids:Reaction-Induced Self-Separation Catalysts for Esterification[J].Angew Chem Int Ed,2009,40(1):168-171. |
[13] | Qiao Y X,Hou Z S,Li H,et al.Polyoxometalate-Based Protic Alkylimidazolium Salts as Reaction-Induced Phase-Separation Catalysts for Olefin Epoxidation[J].Green Chem,2009,11 (12):1955-1960. |
[14] | Dong T,Chen F W,Cao M H,etal.Low Melting Point and High Stability Polyoxomolybdate-Based Ionic Liquids as Photocatalysts[J].Chem Res Chinese Univ,2011,27(1):11-14. |
[15] | Bi L H,Wang E B,Xu L,et al.Synthesis,Properties and Crystal Structure of Some Polyoxometalates Containing the Tris (hydroxymethyl)-Aminomethane Cation[J].Inorg Chim Acta,2000,305 (2):163-171. |
[16] | Gamelas J A F,Cavaleiro A M V,Gomes E de M,et al.Synthesis,Properties and Photochromism of Novel Charge Transfer Compounds with Keggin Anions and Protonated 2,2'-Biquinoline[J].Polyhedron,2002,21 (25/26):2537-2545. |
[17] | Niu J Y,You X Z,Duan C Y.A Novel Optical Complex Between an Organic Substrate and a Polyoxometalate:Crystal and Molecular Structure of α-H4SiWO40·4HMPA·2H2O (HMPA =Hexamethylphosphoramide)[J].Inorg Chem,1996,35(14):4211-4217. |
[18] | Zhang L J,Zhou Y S,Yu Z,et al.Synthesis and Structural Characterization of Two New Polyoxometalate-Based Organic/Inorganic Charge-Transfer Hybrids 4 (2,2'-DPA) · Pseudo-α-H4SiMo12O40 · 4DMF· 2 H2 O and 4 (2,2'-DPA) · Pseudo-α-H4SiMo12O40 ·2H2O(2,2'-DPA =2,2'-Dipyridylamine)[J].J Mol Struct,2001,570(1/3):83-90. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分:
-
10%
-
20%
-
30%
-
40%
-
50%