2015
DOI: 10.1039/c4dt03345k
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Direct synthesis of size-tunable PbS nanocubes and octahedra and the pH effect on crystal shape control

Abstract: A one-pot synthesis for the growth of PbS nanocubes and octahedra has been developed by heating an aqueous mixture of cetyltrimethylammonium bromide (CTAB), thioacetamide (TAA), lead acetate, and nitric acid at 90 °C for 3 h. The method allows for direct large-scale production of small and uniform PbS nanocubes. The PbS cubes and octahedra exhibit different surface properties, as evidenced by zeta potential measurements and stability tests in methyl orange and methylene blue solutions. Examination of the reage… Show more

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Cited by 21 publications
(24 citation statements)
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“…For the above precipitation reactions, it should be possible to introduce an acid to tune the reaction equilibrium for more controlled growth of PbSe nanocrystals. Such a strategy was found to be useful for polyhedral PbS crystal growth …”
Section: Resultsmentioning
confidence: 99%
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“…For the above precipitation reactions, it should be possible to introduce an acid to tune the reaction equilibrium for more controlled growth of PbSe nanocrystals. Such a strategy was found to be useful for polyhedral PbS crystal growth …”
Section: Resultsmentioning
confidence: 99%
“…Such as trategy was found to be useful for polyhedral PbS crystal growth. [7,8] For the synthesis of PbSe nanocrystals with tunable sizes at room temperature, a0 .1 m Na 2 SeSO 3 solutionw as prepared first by mixing an aqueous Na 2 SO 3 solution with selenium powdera nd heating the mixture at reflux at 90-100 8Cf or 30 min. Next, 100 mLo fa0.1 m Pb(OAc) 2 solution were added to vials containing different volumes of deionized water,s o that the final total solutionv olume was 10 mL.…”
Section: Resultsmentioning
confidence: 99%
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“…First, monocrystalline nanocubes are synthesized in solution, purified, and resuspended to make a colloidal ink. Colloidal synthesis of a wide range of metal, semiconductor, and dielectric nanocubes has been reported previously; here we use 70 nm {100}‐faceted silver nanocubes to demonstrate the concept. These nanocubes are assembled into nanoscale trenches patterned in a flexible PDMS template (Figure A).…”
mentioning
confidence: 89%