WO_3-ZrO_2/SBA-15的制备及其可见光催化分析
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摘要
通过溶胶凝胶法,分别制备了不同负载量的WO_3/SBA-15和WO_3-ZrO_2/SBA-15介孔材料,利用XRD、BET和TEM等表征手段对其进行表征,并对其光降解染料罗丹明B的活性进行比对研究分析。结果表明:Wx/SBA-15(x=20,30,40,50)和W_(40)Zry/SBA-15(y=3,5,7,9)均能在可见光下光降解罗丹明B,光催化活性W_(40)/SBA-15>W_(50)/SBA-15>W_(30)/SBA-15>W_(20)/SBA-15;引入ZrO_2后,光催化活性W_(40)Zr_5/SBA-15>W_(40)Zr_9/SBA-15>W_(40)Zr_7/SBA-15>W_(40)Zr_3/SBA-15。其中,W_(40)/SBA-15和W_(40)Zr_5/SBA-15的光降解效率最高,分别为73.4%和86.6%,ZrO_2的引入提高了光降解效率;同时,WO_3/SBA-15和WO_3-ZrO_2/SBA-15也具有很好的循环价值,可多次使用。
Different loadings of WO_3/SBA-15 and WO_3-ZrO_2/SBA-15 are prepared by sol-gel method and characterized by XRD,BET,TEM.The activity of photodegradation of rhodamine B and the adsorption of ammonia ability are investigated.The results show that the rhodamine B is photodegraded easily by using Wx/SBA-15(x=20,30,40,50)and W40 Zry/SBA-15(y=3,5,7,9).Photocatalytic activity from high to low is W_(40)/SBA-15>W_(50)/SBA-15>W_(30)/SBA-15>W_(20)/SBA-15,while doped into ZrO_2,Photocatalytic activity from high to low become W_(40)Zr_5/SBA-15>W_(40)Zr_9/SBA-15>W_(40)Zr_7/SBA-15>W_(40)Zr_3/SBA-15.The rate of photodegradation with W_(40)/SBA-15 and W_(40)Zr_5/SBA-15 are 73.4% and 86.6%respectively.WO_3/SBA-15 and WO_3-ZrO_2/SBA-15 also have good cycle efficiency and the advantage of reusability.
Different loadings of WO_3/SBA-15 and WO_3-ZrO_2/SBA-15 are prepared by sol-gel method and characterized by XRD,BET,TEM.The activity of photodegradation of rhodamine B and the adsorption of ammonia ability are investigated.The results show that the rhodamine B is photodegraded easily by using Wx/SBA-15(x=20,30,40,50)and W40 Zry/SBA-15(y=3,5,7,9).Photocatalytic activity from high to low is W_(40)/SBA-15>W_(50)/SBA-15>W_(30)/SBA-15>W_(20)/SBA-15,while doped into ZrO_2,Photocatalytic activity from high to low become W_(40)Zr_5/SBA-15>W_(40)Zr_9/SBA-15>W_(40)Zr_7/SBA-15>W_(40)Zr_3/SBA-15.The rate of photodegradation with W_(40)/SBA-15 and W_(40)Zr_5/SBA-15 are 73.4% and 86.6%respectively.WO_3/SBA-15 and WO_3-ZrO_2/SBA-15 also have good cycle efficiency and the advantage of reusability.
引文
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[4]Rahimnejad S,He J H,Pan F,et al.Enhancement of the photocatalytic efficiency of WO3 nanoparticles via hydrogen plasma treatment[J].Materials Research Express,2014,1(4):44-45.
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[7]Zhang H,Li S,Lu R,et al.Time-resolved study on xanthene dye-sensitized carbon nitride photocatalytic systems[J].Acs Applied Materials&Interfaces,2015,7(39):21868-21874.
[8]Bhattacharyya K,Majeed J,Dey K K,et al.Effect of Mo-incorporation in the TiO2lattice:a mechanistic basis for photocatalytic dye degradation[J].Journal of Physical Chemistry C,2014,118(29):15946-15962.
[9]He S,Han C,Wang H,et al.Uptake of arsenic(V)using alumina functionalized highly ordered mesoporous SBA-15(Alx-SBA-15)as an effective adsorbent[J].Journal of Chemical&Engineering Data,2015,60(5):1300-1310.
[10]Rajamanickam M,Pachamuthu M P,Ramanathan A,et al.Synthesis,characterization,and epoxidation activity of tungsten-incorporated SBA-16(W-SBA-16)[J].Industrial&Engineering Chemistry Research,2014,53(49):18833-18839.
[11]Enumula S S,Gurram V R B,Chada R R,et al.Clean synthesis of alkyl levulinates from levulinic acid over one pot synthesized WO3-SBA-16catalyst[J].Journal of Molecular Catalysis A Chemical,2017,426:30-38.
[12]Gondal M A,Suliman M A,Dastageer M A,et al.Visible light photocatalytic degradation of herbicide(Atrazine)using surface plasmon resonance induced in mesoporous Ag-WO3/SBA-15composite[J].Journal of Molecular Catalysis A Chemical,2016,425:208-216.
[13]Zhou H,Yi S,Xi J,et al.ZrO2-nanoparticle-modified graphite felt:bifunctional effects on vanadium flow batteries[J].Acs Applied Materials&Interfaces,2016,8(24):15369-15378.
[14]Liu C,Lee S,Su D,et al.Controlling the particle size of ZrO2 nanoparticles in hydrothermally stable ZrO2/MWCNT composites[J].Langmuir the Acs Journal of Surfaces&Colloids,2012,28(49):17159-17167.
[15]Wang W,Wu K,Liu P,et al.Hydrodeoxygenation of p-cresol over Pt/Al2O3catalyst promoted by ZrO2,CeO2and CeO2-ZrO2[J].Industrial&Engineering Chemistry Research,2016,55(28):7598-7603.
[16]Han L,Ruan J,Li Y,et al.Synthesis and characterization of the amphoteric amino acid bifunctional mesoporous silica[J].Chemistry of Materials,2007,19(11):2860-2867.