ORCID Profile
0000-0003-2262-7958
Current Organisation
State Key Laboratory of Crystal Materials
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Publisher: Wiley
Date: 13-11-2008
Publisher: American Chemical Society (ACS)
Date: 30-10-2009
DOI: 10.1021/LA902987W
Abstract: We demonstrate a simple and reproducible way to produce quasi-spherical Au nanoparticles (NPs) with a fairly narrow size distribution in water by rapidly adding a mixture solution of HAuCl(4), sodium citrate, and a trace amount of silver nitrate into boiling water. The sizes of quasi-spherical Au NPs obtained increases from 12 +/- 1 nm to 18 +/- 3, 25 +/- 3, and 36 +/- 3 nm with decrease of the citrate concentration in a fairly linear way. The present protocol can efficiently minimize the effect of citrate to buffer the pH of the reaction media and thus change the type and reactive activity of auric ions and significantly speed up the nucleation and growth rate of Au NPs. The presence of Ag(+) ions can not only suppress the secondary nucleation but also reshape the polycrystalline Au NPs into a quasi-spherical shape. In the case of synthesis of Au NPs of sizes ranging from 10 to 36 nm, our approach efficiently makes up the shortages of the classical Turkevich method with respect to the reproducibility and uniformity of the NP size and shape.
Publisher: Royal Society of Chemistry (RSC)
Date: 2023
DOI: 10.1039/D3TA02783J
Abstract: The electrocatalytic activity of gold and gold-based bimetallic nanoparticles depends on their surface topography, especially the defects on (111) facets.
Publisher: American Chemical Society (ACS)
Date: 10-08-2020
Publisher: American Chemical Society (ACS)
Date: 21-06-2018
Abstract: It is well known that the activity and stability of electrocatalysts are largely dependent on their surface facets. In this work, we have successfully regulated surface facets of three-dimensional (3D) metallic Au
Publisher: Wiley
Date: 17-06-2009
Abstract: In the swim: Colloidal nanoparticles coated with polylactide (PLA, red) and poly(ethylene glycol) brushes (PEG, black) can transfer from organic to aqueous phases across liquid/liquid or liquid/gel interfaces during degradation of the PLA coating (see picture: first step), which is driven selectively by the hydrogen bonding of the PEG coating with the aqueous phase (second step).
Publisher: Elsevier BV
Date: 12-2022
Publisher: American Chemical Society (ACS)
Date: 27-10-2014
DOI: 10.1021/NN503382V
Abstract: Janus particles, consisting of Fe3O4 nanoparticles and organic particles of the complexes of α-cyclodextrin and polyethylene glycol (5) nonylphenyl ether, have been successfully fabricated via strain-driven microphase separation, which is distinct from conventional surface wetting-driven microphase separation. The as-prepared Janus particles can self-assemble into hollow spheres, which draw a clear analogy with self-assembly of lipids to vesicles.
Publisher: American Chemical Society (ACS)
Date: 27-02-2014
DOI: 10.1021/LA404602H
Abstract: In this Article, high-quality gold nanocrystals (Au NCs) with various shapes including concave cubic, trisoctahedral, cubic, rod-like, and quasi-spherical have been successfully produced in high yield via adding a trace amount of NaBH4 solution into growth solutions mainly composed of HAuCl4, ascorbic acid, and surfactants. The sizes and shapes of as-prepared Au NCs can be tuned by the compositions of the growth solutions and the amount of NaBH4 added. The electrocatalytic performance of differently shaped Au NCs for methanol oxidation was studied as-prepared trisoctahedral or concave cubic Au NCs are more highly active electrocatalysts for methanol oxidation due to the presence of high-index facets on their surface.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5SM00900F
Abstract: This review is an overview of the current developments in directed self-assembly of metal nanoparticles with tailored plasmonic properties.
Publisher: American Chemical Society (ACS)
Date: 20-08-2019
Publisher: American Chemical Society (ACS)
Date: 28-12-2022
Publisher: American Chemical Society (ACS)
Date: 25-02-2014
DOI: 10.1021/LA4047148
Abstract: Monodisperse, quasi-spherical silver nanoparticles (Ag NPs) with controlled sizes have been produced directly in water via adding the aqueous solutions of the mixtures of AgNO3 and sodium citrate to boiling aqueous solutions of ascorbic acid (AA). Different compounds, including NaCl, NaBr, KI, Na2SO4, Na2CO3, Na2S, and Na3PO4, are added to the AgNO3/citrate mixture solutions to form new silver compounds with fairly low solubility in water, which are used as precursors instead of soluble Ag(+) ions to synthesize Ag NPs via AA/citrate reduction. This enables us not only to produce monodisperse, quasi-spherical Ag NPs but also to tune the sizes of the resulting NPs from 16 to 30 nm according to the potential of new silver precursors as well as the concentrations of anions.
Publisher: American Chemical Society (ACS)
Date: 17-09-2012
DOI: 10.1021/LA3027804
Abstract: In this report, we demonstrate a rapid and simple seeded growth method for synthesizing monodisperse, quasi-spherical, citrate-stabilized Au nanoparticles (Au NPs) via H(2)O(2) reduction of HAuCl(4). Au NPs with diameter ranging from 30 to 230 nm can be synthesized by simply adding 12 nm citrate stabilized Au NP seeds to an aqueous solution of H(2)O(2) and HAuCl(4) under ambient conditions. The diameter of the resulting Au NPs can be quantitatively controlled by the molar ratio of HAuCl(4) to the Au seeds. The standard deviation of the Au NP sizes is less than 10%, and the ellipticity (ratio of major to minor axes) of the NPs is less than 1.1. Compared to existing ones, the present seeded growth approach is implemented within 1 min under ambient condition, and no unfavorable additives are involved because H(2)O(2) can readily decompose into H(2)O during storage or via boiling.
Publisher: American Chemical Society (ACS)
Date: 11-07-2007
DOI: 10.1021/CM070918Q
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C4TA04940C
Abstract: Well-dispersed, core–shell Au–Pt nanodendrites were synthesized via overgrowth of platinum on in situ 5.5 nm gold nanoparticles at room temperature.
Publisher: American Chemical Society (ACS)
Date: 12-04-2013
DOI: 10.1021/LA400214X
Abstract: Monodisperse, quasi-spherical silver nanocrystals (Ag NCs) have been produced directly in water via adding the aqueous solution of a mixture of AgNO3, sodium citrate, and KI into the boiling aqueous solutions of ascorbic acid (AA). The AA is used to significantly accelerate reduction of AgNO3 in order to promote a very fast nucleation, and the KI is used to tailor the growth of the Ag NCs into a quasi-spherical shape via its preferential adsorption on the NC {111} facets. The major role of citrate is to stabilize the newly formed NCs, whereas it has a minor contribution to reduction of AgNO3. The synergy of the effects of AA, citrate, and KI can significantly narrow the size distributions of the Ag NCs obtained so and transform the NC shapes to be truly quasi-spherical.
Publisher: Royal Society of Chemistry (RSC)
Date: 2019
DOI: 10.1039/C9TB01653H
Abstract: Au 6–50 aerogels with {110}-rich facets (35.5%) are fabricated for glucose detection by size-dependent surface reconstruction between two differently-sized gold nanoparticles.
Publisher: Wiley
Date: 18-02-2013
Publisher: Royal Society of Chemistry (RSC)
Date: 2013
DOI: 10.1039/C3TA01540H
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4CE00334A
Publisher: Royal Society of Chemistry (RSC)
Date: 2010
DOI: 10.1039/C0CP00128G
Abstract: In this paper, various nanostructured poly(aniline) (PANI) particles have been prepared via redox polymerization of aniline in the presence of tri(ethylene glycol) bis(1,5-dihydroxy-naphthalene-2,6- disulfate) ether (TBE). The morphology evolution of the resulting PANI particles was carefully monitored by electron microscopy, clearly underlining the structure-directing role of TBE during the agglomeration of PANI primary nanoparticles (NPs) in the course of polymerization. Various interactions exerted on the PANI primary NPs were assessed based on extended Derjaguin-Landau-Verwey-Overbeek (DLVO) theory, and the thermodynamic balance of these interactions was used to analyze the effect of the TBE concentration on the morphology of the nanostructured PANI particles.
Publisher: Royal Society of Chemistry (RSC)
Date: 2014
DOI: 10.1039/C4RA03363A
Abstract: We present a simple strategy for synthesis of water-soluble, monodisperse, highly fluorescent gold nanoclusters (Au NCs) with sizes of 1.8 nm by co-reduction of glutathione and citrate for 24 h at 50 °C. The fluorescence intensity of the GS/C–Au NCs obtained is pH-dependent and can be reversibly adjusted in the pH range from 4.1 to 8.6.
Publisher: Royal Society of Chemistry (RSC)
Date: 2015
DOI: 10.1039/C5SC01088H
Abstract: Open-mouthed, yolk–shell Au@AgPd nanoparticles are successfully produced via galvanic replacement reaction in water at room temperature.
Publisher: American Chemical Society (ACS)
Date: 21-05-2009
DOI: 10.1021/CM900268Z
No related grants have been discovered for Haibing Xia.