Convenient synthesis of twin-Christmas tree-like PbWO4 microcrystals and their photocatalytic properties
Jin ZHANG, Li-Li PENG, Ying TANG, Huijie WU
Convenient synthesis of twin-Christmas tree-like PbWO4 microcrystals and their photocatalytic properties
Novel twin-Christmas tree-like PbWO4 microcrystals have been prepared via a convenient aqueous solution route at room temperature under the assistance of β-cyclodextrin (β-CD). The product was characterized by XRD, EDX, SEM, TEM, UV-vis and PL and BET techniques. It was found that β-CD plays an important role in the forming of twin-Christmas tree-like PbWO4 microcrystals. A five-step growth mechanism was proposed to explain the formation of such twin-Christmas tree-like structures. The photocatalytic performance of PbWO4 microcrystals was evaluated by measuring the decomposition rate of methylene blue (MB) and malachite green (MG) solution under the UV irradiation, and the photocatalytic results indicated that as-prepared PbWO4 microcrystals exhibit good and versatile photocatalytic activity as well as excellent recyclability.
PbWO4 / twin-Christmas tree-like / growth mechanism / UV irradiation / photocatalyst
[1] |
Tian P, Zhang Y, Senevirathne K,
CrossRef
Pubmed
Google scholar
|
[2] |
Mak A C, Yu C L, Yu J C,
CrossRef
Google scholar
|
[3] |
Sun Y, Xia Y. Shape-controlled synthesis of gold and silver nanoparticles. Science, 2002, 298(5601): 2176–2179
CrossRef
Pubmed
Google scholar
|
[4] |
Tang H, Chang S F, Jiang L Y,
CrossRef
Google scholar
|
[5] |
Yang X, Chen Z, Xu J,
CrossRef
Pubmed
Google scholar
|
[6] |
Barth J V, Costantini G, Kern K. Engineering atomic and molecular nanostructures at surfaces. Nature, 2005, 437(7059): 671–679
CrossRef
Pubmed
Google scholar
|
[7] |
Cerný P, Jelinkova H, Zverev P G,
CrossRef
Google scholar
|
[8] |
Angloher G, Bruckmayer M, Bucci C,
CrossRef
Google scholar
|
[9] |
Sundaram R, Nagaraja K S. Electrical and humidity sensing properties of lead(II) tungstate–tungsten(VI) oxide and zinc(II) tungstate–tungsten(VI) oxide composites. Materials Research Bulletin, 2004, 39(4–5): 581–590
CrossRef
Google scholar
|
[10] |
Faure N, Borel C, Couchaud M,
|
[11] |
Arora S K, Chudasama B. Flux growth and optoelectronic study of PbWO4 single crystals. Crystal Growth & Design, 2007, 7(2): 296–299
CrossRef
Google scholar
|
[12] |
Neiman Y, Guseva A F, Sharafutdinov A R. Origin of potential difference selfgenerated by reaction and transport processes. Solid State Ionics, 1997, 101–103: 367–372
CrossRef
Google scholar
|
[13] |
Zeng H C. Rectangular vacancy island formation and self-depletion in Czochralski-grown PbMoO4 single crystal during heat treatment. Journal of Crystal Growth, 1996, 160(1–2): 119–128
CrossRef
Google scholar
|
[14] |
Yu C L, Cao F F, Li X,
CrossRef
Google scholar
|
[15] |
Tang H, Li C S, Song H,
CrossRef
Google scholar
|
[16] |
Wang G Z, Hao C C. Fast synthesis and morphology control of lead tungstate microcrystals via a microwave-assisted method. Materials Research Bulletin, 2009, 44(2): 418–421
CrossRef
Google scholar
|
[17] |
Wang Y G, Yang L L, Wang Y J,
CrossRef
Google scholar
|
[18] |
Fu H B, Pan C S, Zhang L W,
CrossRef
Google scholar
|
[19] |
Zhang Q, Yao W T, Chen X Y,
|
[20] |
Crane M, Frost R L, Williams P A,
CrossRef
Google scholar
|
[21] |
Frost R L, Duong L, Weier M. Raman microscopy of selected tungstate minerals. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2004, 60(8–9): 1853–1859
CrossRef
Pubmed
Google scholar
|
[22] |
Bastians S, Crump G, Griffith W P,
CrossRef
Google scholar
|
[23] |
Jin R C, Chen G, Pei J,
CrossRef
Google scholar
|
[24] |
Li Q, Yam V W W. High-yield synthesis of selenium nanowires in water at room temperature. Chemical Communications, 2006, 9(9): 1006–1008
CrossRef
Pubmed
Google scholar
|
[25] |
Bonini M, Rossi S, Karlsson G,
CrossRef
Pubmed
Google scholar
|
[26] |
Penn R L, Banfield J F. Imperfect oriented attachment: dislocation generation in defect-free nanocrystals. Science, 1998, 281(5379): 969–971
CrossRef
Pubmed
Google scholar
|
[27] |
Banfield J F, Welch S A, Zhang H,
CrossRef
Pubmed
Google scholar
|
[28] |
Li Q, Shao M W, Yu G H,
CrossRef
Google scholar
|
[29] |
Fu H B, Pan V S, Zhang L W,
CrossRef
Google scholar
|
[30] |
Yu J G, Yu J C, Ho W K,
CrossRef
Google scholar
|
[31] |
Thongtem T, Phuruangrat A, Thongtem S. Preparation and characterization of nanocrystalline SrWO4 using cyclic microwave radiation. Current Applied Physics, 2008, 8(2): 189–197
CrossRef
Google scholar
|
[32] |
Zhang H, Fan X, Quan X,
CrossRef
Pubmed
Google scholar
|
[33] |
Feng X, Guo H, Patel K,
CrossRef
Google scholar
|
/
〈 | 〉 |