Synthesis of PbS nanoflowers by biomolecule-assisted method in the presence of supercritical carbon dioxide

被引：33

作者：

Jiao, Jiqing ^{[1
]}

Liu, Xin ^{[1
]}

Gao, Wei ^{[1
]}

Wang, Chengwei ^{[1
]}

Feng, Huajie ^{[1
]}

Zhao, Xiaolan ^{[1
]}

Chen, Liuping ^{[1
]}

机构：

[1] Sun Yat Sen Univ, Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China

来源：

SOLID STATE SCIENCES | 2009年 / 11卷 / 05期

关键词：

Nanostructures; Semiconductors; Supercritical carbon dioxide; Biomolecule-assisted; NANOCRYSTALS; SULFIDE; GROWTH;

D O I：

10.1016/j.solidstatesciences.2009.01.010

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The cubic PbS nanoflowers were successfully synthesized by the biomolecule-assisted method in the presence of supercritical carbon dioxide. This is an effective, simple and green synthetic method for the preparation of nanomaterials. It is noteworthy that the dosage of cetyltrimethylammonium bromide (CTAB) and chitosan as well as appropriate reaction time and pressure of system are crucial to form the unusual nanoflower structured PbS. The unique nanoflowers have numerous petals, which grow along the (100) direction as a single crystal. Especially, the nanoflower PbS indicates better sensitivity to the laser power via Raman spectra. Although the product size of PbS obtained is larger than the Bohr radius, its UV-vis absorption spectrum shows a remarkable blue-shift from that of bulk PbS due to quantum-confinement effects. (C) 2009 Elsevier Masson SAS. All rights reserved.

引用

页码：976 / 981

页数：6

共 31 条

[1]

Batonneau Y, 2000, J RAMAN SPECTROSC, V31, P1113, DOI 10.1002/1097-4555(200012)31:12<1113::AID-JRS653>3.0.CO

[2]

2-E

[3] Hyperbranched PbS and PbSe nanowires and the effect of hydrogen gas on their synthesis [J].

Bierman, Matthew J. ;

Lau, Y. K. Albert ;

Jin, Song .

NANO LETTERS, 2007, 7 (09) :2907-2912

[4] Deposition of conformal copper and nickel films from supercritical carbon dioxide [J].

Blackburn, JM ;

Long, DP ;

Cabañas, A ;

Watkins, JJ .

SCIENCE, 2001, 294 (5540) :141-145

[5] Liposome fluidization and melting point depression by pressurized CO2 determined by fluorescence anisotropy [J].

Bothun, GD ;

Knutson, BL ;

Strobel, HJ ;

Nokes, SE .

LANGMUIR, 2005, 21 (02) :530-536

[6] SYNTHESIS AND STRUCTURE OF AN IRON(III) SULFIDE-FERRITIN BIOINORGANIC NANOCOMPOSITE [J].

DOUGLAS, T ;

DICKSON, DPE ;

BETTERIDGE, S ;

CHARNOCK, J ;

GARNER, CD ;

MANN, S .

SCIENCE, 1995, 269 (5220) :54-57

[7]

Douglas T, 2002, ADV MATER, V14, P415, DOI 10.1002/1521-4095(20020318)14:6<415::AID-ADMA415>3.0.CO

[8]

2-W

[9] Symmetry-controlled colloidal nanocrystals: Nonhydrolytic chemical synthesis and shape determining parameters [J].

Jun, YW ;

Lee, JH ;

Choi, JS ;

Cheon, J .

JOURNAL OF PHYSICAL CHEMISTRY B, 2005, 109 (31) :14795-14806

[10]

Kowshik M, 2002, ADV MATER, V14, P815, DOI 10.1002/1521-4095(20020605)14:11<815::AID-ADMA815>3.0.CO

← 1 2 3 4 →