Synthesis of PbS Intercalated K4Nb6O17 Composite and Its Photocatalytic Activity for Hydrogen Production

doi:10.3724/SP.J.1077.2012.11682

Abstract

Abstract: Thelayered compound K₄Nb₆O₁₇ was prepared via high temperature solid reaction, and PbS intercalated K₄Nb₆O₁₇ (designated as K₄Nb₆O₁₇/PbS) photocatalyst was synthesized via direct ion exchange, alkylamines intercalation and sulfurization procedures. The as-prepared samples were characterized by X-ray diffraction (XRD), scanning electron microscope (SEM), ultraviolet-visible diffuse reflection spectra (UV-Vis) and photoluminescence measurement (PL), energy dispersive X-ray detector (EDS) and X-ray fluorescence spectrometer (XRF). The photocatalytic performance of these catalysts for hydrogen production was also investigated in the presence of Na₂S and Na₂SO₃ sacrificial reagents. The absorption edge of K₄Nb₆O₁₇ shifted to visible light region after the intercalation of PbS. K₄Nb₆O₁₇/PbS photocatalysts exhibit higher activities for photocatalytic hydrogen production under both UV light and visible light irradiation, and the amounts of hydrogen produced are 123.94 mmol/(g cat) and 0.66 mmol/(g cat) after 3 h irradiation, respectively. The mechanism of charge separation is also discussed.

Key words: potassium niobate, lead sulfide, intercalation, photocatalysis

CLC Number:

TB383

CUI Wen-Quan, LIU Yan-Fei, HU Jin-Shan, LIU Li, LIANG Ying-Hua. Synthesis of PbS Intercalated K₄Nb₆O₁₇ Composite and Its Photocatalytic Activity for Hydrogen Production[J]. Journal of Inorganic Materials, 2012, 27(9): 933-938.

References

[1] Chiarello G L, Ferri D, Selli E. Effect of the CH3OH/H2O ratio on the mechanism of the gas-phase photocatalytic reforming of methanol on noble metal-modified TiO2. J. Catal., 2011, 280(2): 168-177.

[2] Zhang L M, Shuo D, Nie Y F, et al. Photocatalytic patterning and modification of graphene. J. Am. Chem. Soc., 2011, 133(8): 2706-2713.

[3] Sasaki Y, Iwase A, Kato H, et al. The effect of co-catalyst for Z-scheme photocatalysis systems with an Fe3+/Fe2+ electorn me-diator on overall water splitting under visible light irradiation. J. Catal., 2008, 259(1): 133-137.

[4] Niu M T, Huang F, Cui L F, et al. Hydrothermal synthesis, structutal characteristics, and enhanced photocatalysis of SnO2/α-Fe2O3 semiconductor nanoheterostructures. ACS Nano, 2010, 4(2): 681-688.

[5] Cui E T, Lu G X. Resisitance difference to photocorrosion of CuxCd1-xS photocatalysts with various morphologies. Chinses J. Inorg. Chem., 2010, 26(12): 2143-2149.

[6] Maeda K, Eguchi M, Youngblood W J, et al. Niobium oxide nanoscrolls as building blocks for dye-sensitized hydrogen production from water under visible light irradiation. Chem. Mater., 2008, 20(21): 6770-6778.

[7] Allen M R, Thibert A, Sabio E M, et al. Evolution of phusical and photocatalytic properties in the layered titanates A2Ti4O9(A=K, H) and in nanosheets derived by chemical exfoliation. Chem. Mater., 2010, 22(3): 1220-1228.

[8] Maeda K, Eguchi M, Youngblood W, et al. Calcium niobate nano-sheets prepared by the polymerized complex method as catalytic materials for photochemical hydrogen evolution. Chem. Mater., 2009, 21(15): 3611-3617.

[9] Nakato T, Edakubo H, Shimomura T. Photoinduced electron transfer in nanostructured assemblies of layered semiconducting oxide and methylviologen: effect of the location of acceptor molecules. Microporous Mesoporous Mater., 2009, 123(1/2/3): 280-288.

[10] Yuan J, Tao W G, Chen M X, et al. Preparation and photocatalytic water cleavage properties of CdS intercalated K4Nb6O17 thin films. Rare Metal Mat. Eng., 2004, 33(3): 219-221.

[11] Tawkaew S, Fujishiro Y, Yin S, et al. Synthesis of cadmium sulfide pillared layered compounds and photocatalytic reduction of nitrate under visible light irradiation. Colloids Surf., A, 2001, 179(2/3): 139-144.

[12] Thangavel S, Ganesan S, Chandramohan S, et al. Band gap engi-neering in PbS nanostructured thin films from near-infrared down to visible range by in situ Cd-doping. J. Alloys Compd., 495(1): 234-237.

[13] Rosseti R, Hull R, Gibson J M, et al. Hybrid electronic properties between the molecular and solid state limits:lead sulfide and silver halide crystallites. J. Chem. Phys., 1985, 83(3): 1406-1411.

[14] Ratanatawanate C, Xiong C R, Balkus K J, et al. Fabrication of PbS quantum dot doped TiO2 nanotubes. ACS Nano, 2008, 2(8): 1682-1688.

[15] Kumar A, Jakhmola A, Chaudhary V. Synthesis and photophysics of colloidal ZnS/PbS/ZnS nanocomposites-ananalysis of dynamics of charge carriers. J. Photochem. Photobiol. A, 2009, 208: 195-202.

[16] Wang Z H, Zhu S Y, Zhao S P, et al. Synthesis of core-shell Fe3O4@SiO2@MS(M=Pb,Zn,and Hg)microspheres and their application as photocatalysts. J. Alloys Compd., 2011, 509(24): 6893-6898.

[17] Nakato T, Kameyama M, Wei Q M, et al. Structural response of organically modified layered niobate K4Nb6O17 to the adsorption of 2,4-dichlorophenol. Microporous Mesoporous Mater., 2008, 110(2/3): 223-231.

[18] Uchida S, Yamamoto Y, Fujishiro Y, et al. Intercalation of titanium oxide in layered H2Ti4O9 and H4Nb6O17 and photocatatic water cleavage with H2Ti4O9/(TiO2,Pt) and H4Nb6O17/(TiO2,Pt) na-nocomposites. J. Chem. Soc., Faraday Trans., 1997, 93: 3229-3234.

[19] Guan G Q, Kida T, Kusakabe K, et al. Photocatalytic activity of CdS nanoparticles incorporated in titanium silicate molecular sieves of ETS-4 and ETS-10. Appl. Catal. A: Gen., 2005(295): 71-78.

[20] Chen H W, Young K, Kuo Y L. Effect of Pt/TiO2 characteristics on temporal behavior of o-Cresol decomposition by visible light-induced photocatalysis. Water Res., 2007(41): 2067-2078.

[21] Wang Q Q, Lin B Z, Xu B H, et al. Preparation and photocatalytic properties of mesoporous SnO2-hexaniobate layered nanocompo-site. Microporous Mesoporous Mater., 2010(130): 344-351.

[22] Brahimi R, Bessekhouad Y, Bouguelia A, et al. Improvement of eosin visible light degradation using PbS-sensititized TiO2. J. Photochem and Photobiol., A, 2008, 194(2/3): 173-180.

[23] Lin H Y, Lee T H, Sie C Y. Photocatalytic hydrogen production with nickel oxide intercalated K4Nb6O17 under visible light irradiation. Int. J. Hydrogen Energy, 2008(33): 4055-4063.

Synthesis of PbS Intercalated K₄Nb₆O₁₇ Composite and Its Photocatalytic Activity for Hydrogen Production

RichHTML

PDF (PC)

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 4

Recommended Articles

Metrics

Comments

[1]	GENG Zhi-Ming, LI Kun, SHI Dong-liang, SHI Xia-Yu, HUANG Hai-Tao, CHAN Helen Lai Wa. Preparation and Performance of KNN-based Upconversion Transparent Ceramics [J]. Journal of Inorganic Materials, 2014, 29(12): 1265-1269.
[2]	LI Yue-Ming, XIAO Zu-Gui, SHEN Zong-Yang, WANG Zhu-Mei, HONG Yan, PAN Tie-Zheng, Wu Fen. Effect of BaZrO₃ Depant on the Structure and Electric Properties of (K_0.49Na_0.51)_0.98Li_0.02(Nb_0.77Ta_0.18Sb_0.05)O₃ Lead-free Piezoceramics [J]. Journal of Inorganic Materials, 2013, 28(06): 629-634.
[3]	CHU Rui-Qing, HAO Ji-Gong, XU Zhi-Jun, ZANG Guo-Zhong. Preparation and Characterization of (K_0.5Na_0.5)_0.94-2xLi_0.06Sr_xNb_0.98Sb_0.02O₃ Lead-free Piezoelectric Ceramics [J]. Journal of Inorganic Materials, 2010, 25(11): 1164-1168.
[4]	FAN Gui-Fen,LUWen-Zhong,RAO Yuan-Yuan. Structure and Properties of (K_0.5Na_0.5)_1-2xSr_x(Nb_0.94Sb_0.06)O₃ Lead-free Piezoelectric Ceramics [J]. Journal of Inorganic Materials, 2009, 24(3): 433-437.