Microwave-assisted synthesis of Mo-doped H1-xSr2Nb3-xMoxO10 (x=0, 0.05, 0.1, 0.15 and 0.2) with high photocatalytic activity

Jing Xu; Yuelin Wei; Yunfang Huang; Jing Wang; A'xiang Chen; Leqing Fan; Jihuai Wu

doi:10.1088/1674-4926/35/8/083001

J. Semicond. > 2014, Volume 35 > Issue 8 > 083001

SEMICONDUCTOR MATERIALS

Microwave-assisted synthesis of Mo-doped H_1-xSr₂Nb_3-xMo_xO₁₀ (x=0, 0.05, 0.1, 0.15 and 0.2) with high photocatalytic activity

Jing Xu^{1, 2}, Yuelin Wei¹, Yunfang Huang^{1, 2,}, Jing Wang^{1, 2}, A'xiang Chen², Leqing Fan¹ and Jihuai Wu¹

+ Author Affiliations

Corresponding author: Huang Yunfang, Email:huangyf@hqu.edu.cn

DOI: 10.1088/1674-4926/35/8/083001

Abstract: H_1-xSr₂Nb_3-xMo_xO₁₀ photocatalysts were synthesized using a microwave-irradiation-assisted ion-exchange reaction. The physicochemical properties of the photocatalysts were analyzed by field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and ultraviolet-visible spectroscopy (UV-Vis). The photocatalytic activity of the H_1-xSr₂Nb_3-xMo_xO₁₀ was evaluated by degrading methyl orange (MO) dye under light irradiation from a 40-W mercury lamp. The results proved that the Mo doping amount had an important effect on the photocatalytic activity of the catalysts. The highest photocatalytic activity was obtained when the doping amount was 15 mol%. Furthermore, the complex preparation process and lengthy time was simplified and shortened greatly.

Key words: photocatalysis, H_1-xSr₂Nb_3-xMo_xO₁₀, microwave-assisted

References

[1]	Chen X B, Shen S H, Guo L J, et al. Semiconductor-based photocatalytic hydrogen generation. Chem Rev, 2010, 110:6503 doi: 10.1021/cr1001645
[2]	Kudo A, Miseki Y. Heterogeneous photocatalyst materials for water splitting. Chem Soc Rev, 2009, 38:253 doi: 10.1039/B800489G
[3]	Shinde S S, Bhosale C H, Rajpure K Y. Solar light assisted photocatalysis of water using a zinc oxide semiconductor. J Semicomd, 2013, 34:043002 http://kns.cnki.net/KCMS/detail/detail.aspx?filename=bdtx201304005&dbname=CJFD&dbcode=CJFQ
[4]	Sapkal R T, Shinde S S, Rajpure K Y, Photoelectrocatrocatalytic hydrolysis of starch by using sprayed ZnO thin films. J Semicomd, 2013, 34:053001 http://kns.cnki.net/KCMS/detail/detail.aspx?filename=bdtx201305005&dbname=CJFD&dbcode=CJFQ
[5]	Gopalakrishnan J, Bhat V. A₂Ln₂Ti₃O₁₀ (A = K or Rb; Ln = La or rare earth):a new series of layered perovskites exhibiting ion exchange. Inorg Chem, 1987, 26:4299 doi: 10.1021/ic00273a001
[6]	Uma S, Raju AR, Gopalakrishnan J. Bridging the Ruddlesden-Popper and the Dion-Jacobson series of layered perovskites:synthesis of layered oxides, A_2-xLa₂Ti_3-xNb_xO₁₀ (A = K, Rb), exhibiting ion exchange. J Mater Chem, 1993, 3:709 doi: 10.1039/JM9930300709
[7]	Machida M, Mitsuyama T, Ikeue K, et al. Photocatalytic property and electronic structure of triple-layered perovskite tantalates, MCa₂Ta₃O₁₀ (M = Cs, Na, H, and C₆H₁₃NH₃). J Phys Chem B, 2005, 109:7801 doi: 10.1021/jp044833d
[8]	Wang J S, Yin S, Sato T. Characterization of H₂Ti₄O₉ with high specific surface area prepared by a delamination/reassembling process. Mater Sci Eng B, 2006, 126:53 doi: 10.1016/j.mseb.2005.08.083
[9]	Sarahan M C, Carroll E C, Allen M, et al. K₄Nb₆O₁₇-derived photocatalysts for hydrogen evolution from water:nanoscrolls versus nanosheets. J Solid State Chem, 2008, 181:1678 doi: 10.1016/j.jssc.2008.06.021
[10]	Tai Y W, Chen J S, Yang C C, et al. Preparation of nano-gold on K₂La₂Ti₃O₁₀ for producing hydrogen from photo-catalytic water splitting. Cat Today, 2004, 97:95 doi: 10.1016/j.cattod.2004.04.054
[11]	Wu J H, Cheng Y H, Lin J M, et al. Fabrication and photocatalytic properties of HLaNb₂O₇/(Pt, Fe₂O₃) pillared nanomaterial. J Phys Chem C, 2007, 111:3624 doi: 10.1021/jp0674930
[12]	Kleiman-Shwarsctein A, Hu Y S, Forman A J, et al. Electrodeposition of α-Fe₂O₃ doped with Mo or Cr as photoanodes for photocatalytic water splitting. J Phys Chem C, 2008, 112:15900 doi: 10.1021/jp803775j
[13]	Zong X, Yan H J, Wu G P, et al. Enhancement of photocatalytic H₂ evolution on CdS by loading MoS₂ as cocatalyst under visible light irradiation. J Am Chem Soc, 2008, 130:7176 doi: 10.1021/ja8007825
[14]	Joshi U A, Jang J S, Borse P H, et al. Microwave synthesis of single-crystalline perovskite BiFeO₃ nanocubes for photoelectrode and photocatalytic applications. Appl Phys Lett, 2008, 92:242106 doi: 10.1063/1.2946486
[15]	Wu H Q, Wang Q Y, Yao Y Z, et al. Microwave-assisted synthesis and photocatalytic properties of carbon nanotube/zinc sulfide heterostructures. J Phys Chem C, 2008, 112:16779 doi: 10.1021/jp8069018
[16]	Zhang P L, Yin S, Sato T. Synthesis of high-activity TiO₂ photocatalyst via environmentally friendly and novel microwave assisted hydrothermal process. Appl Catal B:Environ, 2009, 89:118 doi: 10.1016/j.apcatb.2008.12.002
[17]	Liu X G, Geng D Y, Wang X L, et al. Enhanced photocatalytic activity of Mo-{001}TiO₂ core-shell nanoparticles under visible light. Chem Commun, 2010, 46:6956 doi: 10.1039/c0cc02034f
[18]	Xu Z C, Li Q, Gao S A, et al. Synthesis and characterization of niobium-doped TiO₂ nanotube arrays by anodization of Ti₂₀Nb Alloys. J Mater Sci Technol, 2012, 28:865 doi: 10.1016/S1005-0302(12)60144-3
[19]	Feng L L, Zou X X, Zhao J, et al. Nanoporous Sr-rich strontium titanate:a stable andsuperior photocatalyst for H₂ evolution. Chem Commun, 2013, 49:9788 doi: 10.1039/c3cc45795h
[20]	Hu Y C, Guo P H, Guo L J. Synthesis and photocatalytic properties of Cr-doped KSr₂Nb₃O₁₀ for hydrogen production. Int J Hydrogen Energy, 2012, 37:1007 doi: 10.1016/j.ijhydene.2011.03.050
[21]	Maeda K, Mallouk T E. Comparison of two-and three-layer restacked Dion-Jacobson phase niobate nanosheets as catalysts for photochemical hydrogen evolution. J Mater Chem, 2009, 19:4813 doi: 10.1039/b903692j
[22]	Gao G, Rabenberg L K, Nunn C M, et al. Formation of quantum-size semiconductor particles in a layered metal phosphonate host lattice. Chem Mater, 1991, 3:149 doi: 10.1021/cm00013a032
[23]	Linsebigler A L, Lu G Q, Yates J T. Photocatalysis on TiO₂ surfaces:principles, mechanisms, and selected results. Chem Rev, 1995, 95:735 doi: 10.1021/cr00035a013
[24]	Gao P, Zhang X J, Zhou W F, et al. First-principle study on anatase TiO₂ codoped with nitrogen and ytterbium. J Semicomd, 2010, 3:032001 http://kns.cnki.net/KCMS/detail/detail.aspx?filename=bdtx201003003&dbname=CJFD&dbcode=CJFQ
[25]	Pleskov Y V. Conversion of luminous energy into electrical and chemical energy in photoelectrochemical cells with semiconductor electrodes. Sov Electrochem, 1981, 17:1 https://www.researchgate.net/publication/279611302_CONVERSION_OF_LUMINOUS_ENERGY_INTO_ELECTRICAL_AND_CHEMICAL_ENERGY_IN_PHOTOELECTROCHEMICAL_CELLS_WITH_SEMICONDUCTOR_ELECTRODES_REVIEW
[26]	Takata T, Furumi Y, Shinohara K, et al. Photocatalytic decomposition of water on spontaneously hydrated layered perovskites. Chem Mater, 1997, 9:1063 doi: 10.1021/cm960612b
[27]	Zhou J K, Zhang Y X, Zhao X S. Photodegradation of benzoic acid over metal-doped TiO₂. Ind Eng Chem Res, 2006, 45:3503 doi: 10.1021/ie051098z

Fig. 1. Powder X-ray diffraction patterns of K$_{1-x}$Sr$_{2}$Nb$_{3-x}$Mo$_{x}$O$_{10}$ ($x =$ 0, 0.05, 0.1, 0.15, 0.2). $a$: KSr$_{2}$Nb$_{3}$O$_{10}$, $b$: K$_{0.95}$Sr$_{2}$Nb$_{2.95}$Mo$_{0.05}$O$_{10}$, $c$: K$_{0.9}$Sr$_{2}$Nb$_{2.9}$Mo$_{0.1}$O$_{10}$, $d$: K$_{0.85}$Sr$_{2}$Nb$_{2.85}$Mo$_{0.15}$O$_{10}$ and $e$: K$_{0.8}$Sr$_{2}$Nb$_{2.8}$Mo$_{0.8}$O$_{10}$.

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Fig. 2. Powder X-ray diffraction patterns of H$_{1-x}$Sr$_{2}$Nb$_{3-x}$Mo$_{x}$O$_{10}$ ($x =$ 0, 0.05, 0.1, 0.15, 0.2). $a$: HSr$_{2}$Nb$_{3}$O$_{10}$, $b$: H$_{0.95}$Sr$_{2}$-Nb$_{2.95}$Mo$_{0.05}$O$_{10}$, $c$: H$_{0.9}$Sr$_{2}$Nb$_{2.9}$Mo$_{0.1}$O$_{10}$, $d$: H$_{0.85}$Sr$_{2}$-Nb$_{2.85}$Mo$_{0.15}$O$_{10}$ and $e$: H$_{0.8}$Sr$_{2}$Nb$_{2.8}$Mo$_{0.8}$O$_{10}$.

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Fig. 3. Crystal structure of (a) KSr$_{2}$Nb$_{3}$O$_{10}$ and (b) HSr$_{2}$Nb$_{3}$O$_{10}$.

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Fig. 4. SEM images of K/H$_{1-x}$Sr$_{2}$Nb$_{3-x}$Mo$_{x}$O$_{10}$ ($x =$ 0, 0.05, 0.1, 0.15, 0.2). (a) KSr$_{2}$Nb$_{3}$O$_{10}$, (b) K$_{0.95}$Sr$_{2}$Nb$_{2.95}$Mo$_{0.05}$O$_{10}$, (c) K$_{0.9}$Sr$_{2}$Nb$_{2.9}$Mo$_{0.1}$O$_{10}$, (d) K$_{0.85}$Sr$_{2}$Nb$_{2.85}$Mo$_{0.15}$O$_{10}$, (e) K$_{0.8}$Sr$_{2}$Nb$_{2.8}$Mo$_{0.8}$O$_{10}$, (f) HSr$_{2}$Nb$_{3}$O$_{10}$, (g) H$_{0.95}$Sr$_{2}$Nb$_{2.95}$Mo$_{0.05}$O$_{10}$, (h) H$_{0.9}$Sr$_{2}$Nb$_{2.9}$Mo$_{0.1}$O$_{10}$, (i) H$_{0.85}$Sr$_{2}$Nb$_{2.85}$Mo$_{0.15}$O$_{10}$ and (j) H$_{0.8}$Sr$_{2}$Nb$_{2.8}$Mo$_{0.8}$O$_{10}$.

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Fig. 5. UV-visible diffuse reflection spectra of (a) K$_{1-x}$Sr$_{2}$Nb$_{3-x}$Mo$_{x}$O$_{10}$ ($x =$ 0, 0.05, 0.1, 0.15, 0.2) and (b) H$_{1-x}$Sr$_{2}$Nb$_{3-x}$Mo$_{x}$O$_{10}$ ($x =$ 0, 0.05, 0.1, 0.15, 0.2).

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Fig. 6. Estimated band gap of (a) K$_{1-x}$Sr$_{2}$Nb$_{3-x}$Mo$_{x}$O$_{10}$ ($x =$ 0, 0.05, 0.1, 0.15, 0.2), (b) H$_{1-x}$Sr$_{2}$Nb$_{3-x}$Mo$_{x}$O$_{10}$ ($x =$ 0, 0.05, 0.1, 0.15, 0.2), The band gaps of samples are determined at ($h \nu )^{2}$ $=$ 0, respectively.

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Fig. 7. Organic dye degradation ratio using (a) K$_{1-x}$Sr$_{2}$-Nb$_{3-x}$Mo$_{x}$O$_{10}$ ($x =$ 0, 0.05, 0.1, 0.15, 0.2) and (b) H$_{1-x}$Sr$_{2}$-Nb$_{3-x}$Mo$_{x}$O$_{10}$ ($x =$ 0, 0.05, 0.1, 0.15, 0.2) as a photocatalyst, respectively.

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Fig. 8. Photocatalytic degradation rate of methyl orange for H$_{0.85}$Sr$_{2}$Nb$_{2.85}$Mo$_{0.15}$O$_{10}$ used for different times.

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Table 1. Characteristics of samples.

[1]	Chen X B, Shen S H, Guo L J, et al. Semiconductor-based photocatalytic hydrogen generation. Chem Rev, 2010, 110:6503 doi: 10.1021/cr1001645
[2]	Kudo A, Miseki Y. Heterogeneous photocatalyst materials for water splitting. Chem Soc Rev, 2009, 38:253 doi: 10.1039/B800489G
[3]	Shinde S S, Bhosale C H, Rajpure K Y. Solar light assisted photocatalysis of water using a zinc oxide semiconductor. J Semicomd, 2013, 34:043002 http://kns.cnki.net/KCMS/detail/detail.aspx?filename=bdtx201304005&dbname=CJFD&dbcode=CJFQ
[4]	Sapkal R T, Shinde S S, Rajpure K Y, Photoelectrocatrocatalytic hydrolysis of starch by using sprayed ZnO thin films. J Semicomd, 2013, 34:053001 http://kns.cnki.net/KCMS/detail/detail.aspx?filename=bdtx201305005&dbname=CJFD&dbcode=CJFQ
[5]	Gopalakrishnan J, Bhat V. A₂Ln₂Ti₃O₁₀ (A = K or Rb; Ln = La or rare earth):a new series of layered perovskites exhibiting ion exchange. Inorg Chem, 1987, 26:4299 doi: 10.1021/ic00273a001
[6]	Uma S, Raju AR, Gopalakrishnan J. Bridging the Ruddlesden-Popper and the Dion-Jacobson series of layered perovskites:synthesis of layered oxides, A_2-xLa₂Ti_3-xNb_xO₁₀ (A = K, Rb), exhibiting ion exchange. J Mater Chem, 1993, 3:709 doi: 10.1039/JM9930300709
[7]	Machida M, Mitsuyama T, Ikeue K, et al. Photocatalytic property and electronic structure of triple-layered perovskite tantalates, MCa₂Ta₃O₁₀ (M = Cs, Na, H, and C₆H₁₃NH₃). J Phys Chem B, 2005, 109:7801 doi: 10.1021/jp044833d
[8]	Wang J S, Yin S, Sato T. Characterization of H₂Ti₄O₉ with high specific surface area prepared by a delamination/reassembling process. Mater Sci Eng B, 2006, 126:53 doi: 10.1016/j.mseb.2005.08.083
[9]	Sarahan M C, Carroll E C, Allen M, et al. K₄Nb₆O₁₇-derived photocatalysts for hydrogen evolution from water:nanoscrolls versus nanosheets. J Solid State Chem, 2008, 181:1678 doi: 10.1016/j.jssc.2008.06.021
[10]	Tai Y W, Chen J S, Yang C C, et al. Preparation of nano-gold on K₂La₂Ti₃O₁₀ for producing hydrogen from photo-catalytic water splitting. Cat Today, 2004, 97:95 doi: 10.1016/j.cattod.2004.04.054
[11]	Wu J H, Cheng Y H, Lin J M, et al. Fabrication and photocatalytic properties of HLaNb₂O₇/(Pt, Fe₂O₃) pillared nanomaterial. J Phys Chem C, 2007, 111:3624 doi: 10.1021/jp0674930
[12]	Kleiman-Shwarsctein A, Hu Y S, Forman A J, et al. Electrodeposition of α-Fe₂O₃ doped with Mo or Cr as photoanodes for photocatalytic water splitting. J Phys Chem C, 2008, 112:15900 doi: 10.1021/jp803775j
[13]	Zong X, Yan H J, Wu G P, et al. Enhancement of photocatalytic H₂ evolution on CdS by loading MoS₂ as cocatalyst under visible light irradiation. J Am Chem Soc, 2008, 130:7176 doi: 10.1021/ja8007825
[14]	Joshi U A, Jang J S, Borse P H, et al. Microwave synthesis of single-crystalline perovskite BiFeO₃ nanocubes for photoelectrode and photocatalytic applications. Appl Phys Lett, 2008, 92:242106 doi: 10.1063/1.2946486
[15]	Wu H Q, Wang Q Y, Yao Y Z, et al. Microwave-assisted synthesis and photocatalytic properties of carbon nanotube/zinc sulfide heterostructures. J Phys Chem C, 2008, 112:16779 doi: 10.1021/jp8069018
[16]	Zhang P L, Yin S, Sato T. Synthesis of high-activity TiO₂ photocatalyst via environmentally friendly and novel microwave assisted hydrothermal process. Appl Catal B:Environ, 2009, 89:118 doi: 10.1016/j.apcatb.2008.12.002
[17]	Liu X G, Geng D Y, Wang X L, et al. Enhanced photocatalytic activity of Mo-{001}TiO₂ core-shell nanoparticles under visible light. Chem Commun, 2010, 46:6956 doi: 10.1039/c0cc02034f
[18]	Xu Z C, Li Q, Gao S A, et al. Synthesis and characterization of niobium-doped TiO₂ nanotube arrays by anodization of Ti₂₀Nb Alloys. J Mater Sci Technol, 2012, 28:865 doi: 10.1016/S1005-0302(12)60144-3
[19]	Feng L L, Zou X X, Zhao J, et al. Nanoporous Sr-rich strontium titanate:a stable andsuperior photocatalyst for H₂ evolution. Chem Commun, 2013, 49:9788 doi: 10.1039/c3cc45795h
[20]	Hu Y C, Guo P H, Guo L J. Synthesis and photocatalytic properties of Cr-doped KSr₂Nb₃O₁₀ for hydrogen production. Int J Hydrogen Energy, 2012, 37:1007 doi: 10.1016/j.ijhydene.2011.03.050
[21]	Maeda K, Mallouk T E. Comparison of two-and three-layer restacked Dion-Jacobson phase niobate nanosheets as catalysts for photochemical hydrogen evolution. J Mater Chem, 2009, 19:4813 doi: 10.1039/b903692j
[22]	Gao G, Rabenberg L K, Nunn C M, et al. Formation of quantum-size semiconductor particles in a layered metal phosphonate host lattice. Chem Mater, 1991, 3:149 doi: 10.1021/cm00013a032
[23]	Linsebigler A L, Lu G Q, Yates J T. Photocatalysis on TiO₂ surfaces:principles, mechanisms, and selected results. Chem Rev, 1995, 95:735 doi: 10.1021/cr00035a013
[24]	Gao P, Zhang X J, Zhou W F, et al. First-principle study on anatase TiO₂ codoped with nitrogen and ytterbium. J Semicomd, 2010, 3:032001 http://kns.cnki.net/KCMS/detail/detail.aspx?filename=bdtx201003003&dbname=CJFD&dbcode=CJFQ
[25]	Pleskov Y V. Conversion of luminous energy into electrical and chemical energy in photoelectrochemical cells with semiconductor electrodes. Sov Electrochem, 1981, 17:1 https://www.researchgate.net/publication/279611302_CONVERSION_OF_LUMINOUS_ENERGY_INTO_ELECTRICAL_AND_CHEMICAL_ENERGY_IN_PHOTOELECTROCHEMICAL_CELLS_WITH_SEMICONDUCTOR_ELECTRODES_REVIEW
[26]	Takata T, Furumi Y, Shinohara K, et al. Photocatalytic decomposition of water on spontaneously hydrated layered perovskites. Chem Mater, 1997, 9:1063 doi: 10.1021/cm960612b
[27]	Zhou J K, Zhang Y X, Zhao X S. Photodegradation of benzoic acid over metal-doped TiO₂. Ind Eng Chem Res, 2006, 45:3503 doi: 10.1021/ie051098z

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Received: 08 October 2013 Revised: 02 April 2014 Online: Published: 01 August 2014

Article Navigation > Journal of Semiconductors > 2014 > 35(8): 083001

Jing Xu, Yuelin Wei, Yunfang Huang, Jing Wang, A'xiang Chen, Leqing Fan, Jihuai Wu. Microwave-assisted synthesis of Mo-doped H1-xSr2Nb3-xMoxO10 (x=0, 0.05, 0.1, 0.15 and 0.2) with high photocatalytic activity[J]. Journal of Semiconductors, 2014, 35(8): 083001. doi: 10.1088/1674-4926/35/8/083001 ****J Xu, Y L Wei, Y F Huang, J Wang, A Chen, L Q Fan, J H Wu. Microwave-assisted synthesis of Mo-doped H1-xSr2Nb3-xMoxO10 (x=0, 0.05, 0.1, 0.15 and 0.2) with high photocatalytic activity[J]. J. Semicond., 2014, 35(8): 083001. doi: 10.1088/1674-4926/35/8/083001.

Citation:

Jing Xu, Yuelin Wei, Yunfang Huang, Jing Wang, A'xiang Chen, Leqing Fan, Jihuai Wu. Microwave-assisted synthesis of Mo-doped H_1-xSr₂Nb_3-xMo_xO₁₀ (x=0, 0.05, 0.1, 0.15 and 0.2) with high photocatalytic activity[J]. Journal of Semiconductors, 2014, 35(8): 083001. doi: 10.1088/1674-4926/35/8/083001 ****

J Xu, Y L Wei, Y F Huang, J Wang, A Chen, L Q Fan, J H Wu. Microwave-assisted synthesis of Mo-doped H1-xSr2Nb3-xMoxO10 (x=0, 0.05, 0.1, 0.15 and 0.2) with high photocatalytic activity[J]. J. Semicond., 2014, 35(8): 083001. doi: 10.1088/1674-4926/35/8/083001.

Citation:

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Microwave-assisted synthesis of Mo-doped H_1-xSr₂Nb_3-xMo_xO₁₀ (x=0, 0.05, 0.1, 0.15 and 0.2) with high photocatalytic activity

DOI: 10.1088/1674-4926/35/8/083001

1.
Engineering Research Center of Environment-Friendly Functional Materials, Ministry of Education, Huaqiao University, Xiamen 361021, China
2.
College of Chemical Engineering, Huaqiao University, Xiamen 361021, China

Funds:

Project supported by the National Natural Science Foundation of China (No. 61306077), the Provincial National Science Foundation of Fujian Province (No. 2013J01188), the National Science Foundation of Quanzhou City (No. 2011G4), and the Fundamental Research Funds for the Central Universities (Nos. JB-ZR1109, JB-ZR1212)

the Provincial National Science Foundation of Fujian Province 2013J01188

the Fundamental Research Funds for the Central Universities JB-ZR1212

the National Natural Science Foundation of China 61306077

the National Science Foundation of Quanzhou City 2011G4

the Fundamental Research Funds for the Central Universities JB-ZR1109

More Information

Corresponding author: Huang Yunfang, Email:huangyf@hqu.edu.cn
Received Date: 2013-10-08
Revised Date: 2014-04-02
Published Date: 2014-08-01

Abstract

Abstract

H_1-xSr₂Nb_3-xMo_xO₁₀ photocatalysts were synthesized using a microwave-irradiation-assisted ion-exchange reaction. The physicochemical properties of the photocatalysts were analyzed by field-emission scanning electron microscopy (FE-SEM), X-ray diffraction (XRD) and ultraviolet-visible spectroscopy (UV-Vis). The photocatalytic activity of the H_1-xSr₂Nb_3-xMo_xO₁₀ was evaluated by degrading methyl orange (MO) dye under light irradiation from a 40-W mercury lamp. The results proved that the Mo doping amount had an important effect on the photocatalytic activity of the catalysts. The highest photocatalytic activity was obtained when the doping amount was 15 mol%. Furthermore, the complex preparation process and lengthy time was simplified and shortened greatly.
- photocatalysis,
- H_1-xSr₂Nb_3-xMo_xO₁₀,
- microwave-assisted

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References(27)

References

[1]	Chen X B, Shen S H, Guo L J, et al. Semiconductor-based photocatalytic hydrogen generation. Chem Rev, 2010, 110:6503 doi: 10.1021/cr1001645
[2]	Kudo A, Miseki Y. Heterogeneous photocatalyst materials for water splitting. Chem Soc Rev, 2009, 38:253 doi: 10.1039/B800489G
[3]	Shinde S S, Bhosale C H, Rajpure K Y. Solar light assisted photocatalysis of water using a zinc oxide semiconductor. J Semicomd, 2013, 34:043002 http://kns.cnki.net/KCMS/detail/detail.aspx?filename=bdtx201304005&dbname=CJFD&dbcode=CJFQ
[4]	Sapkal R T, Shinde S S, Rajpure K Y, Photoelectrocatrocatalytic hydrolysis of starch by using sprayed ZnO thin films. J Semicomd, 2013, 34:053001 http://kns.cnki.net/KCMS/detail/detail.aspx?filename=bdtx201305005&dbname=CJFD&dbcode=CJFQ
[5]	Gopalakrishnan J, Bhat V. A₂Ln₂Ti₃O₁₀ (A = K or Rb; Ln = La or rare earth):a new series of layered perovskites exhibiting ion exchange. Inorg Chem, 1987, 26:4299 doi: 10.1021/ic00273a001
[6]	Uma S, Raju AR, Gopalakrishnan J. Bridging the Ruddlesden-Popper and the Dion-Jacobson series of layered perovskites:synthesis of layered oxides, A_2-xLa₂Ti_3-xNb_xO₁₀ (A = K, Rb), exhibiting ion exchange. J Mater Chem, 1993, 3:709 doi: 10.1039/JM9930300709
[7]	Machida M, Mitsuyama T, Ikeue K, et al. Photocatalytic property and electronic structure of triple-layered perovskite tantalates, MCa₂Ta₃O₁₀ (M = Cs, Na, H, and C₆H₁₃NH₃). J Phys Chem B, 2005, 109:7801 doi: 10.1021/jp044833d
[8]	Wang J S, Yin S, Sato T. Characterization of H₂Ti₄O₉ with high specific surface area prepared by a delamination/reassembling process. Mater Sci Eng B, 2006, 126:53 doi: 10.1016/j.mseb.2005.08.083
[9]	Sarahan M C, Carroll E C, Allen M, et al. K₄Nb₆O₁₇-derived photocatalysts for hydrogen evolution from water:nanoscrolls versus nanosheets. J Solid State Chem, 2008, 181:1678 doi: 10.1016/j.jssc.2008.06.021
[10]	Tai Y W, Chen J S, Yang C C, et al. Preparation of nano-gold on K₂La₂Ti₃O₁₀ for producing hydrogen from photo-catalytic water splitting. Cat Today, 2004, 97:95 doi: 10.1016/j.cattod.2004.04.054
[11]	Wu J H, Cheng Y H, Lin J M, et al. Fabrication and photocatalytic properties of HLaNb₂O₇/(Pt, Fe₂O₃) pillared nanomaterial. J Phys Chem C, 2007, 111:3624 doi: 10.1021/jp0674930
[12]	Kleiman-Shwarsctein A, Hu Y S, Forman A J, et al. Electrodeposition of α-Fe₂O₃ doped with Mo or Cr as photoanodes for photocatalytic water splitting. J Phys Chem C, 2008, 112:15900 doi: 10.1021/jp803775j
[13]	Zong X, Yan H J, Wu G P, et al. Enhancement of photocatalytic H₂ evolution on CdS by loading MoS₂ as cocatalyst under visible light irradiation. J Am Chem Soc, 2008, 130:7176 doi: 10.1021/ja8007825
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Microwave-assisted synthesis of Mo-doped H_1-xSr₂Nb_3-xMo_xO₁₀ (x=0, 0.05, 0.1, 0.15 and 0.2) with high photocatalytic activity

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Microwave-assisted synthesis of Mo-doped H_1-xSr₂Nb_3-xMo_xO₁₀ (x=0, 0.05, 0.1, 0.15 and 0.2) with high photocatalytic activity

DOI: 10.1088/1674-4926/35/8/083001

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Microwave-assisted synthesis of Mo-doped H1-xSr2Nb3-xMoxO10 (x=0, 0.05, 0.1, 0.15 and 0.2) with high photocatalytic activity

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Microwave-assisted synthesis of Mo-doped H1-xSr2Nb3-xMoxO10 (x=0, 0.05, 0.1, 0.15 and 0.2) with high photocatalytic activity

DOI: 10.1088/1674-4926/35/8/083001

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Microwave-assisted synthesis of Mo-doped H_1-xSr₂Nb_3-xMo_xO₁₀ (x=0, 0.05, 0.1, 0.15 and 0.2) with high photocatalytic activity

Microwave-assisted synthesis of Mo-doped H_1-xSr₂Nb_3-xMo_xO₁₀ (x=0, 0.05, 0.1, 0.15 and 0.2) with high photocatalytic activity