DMAc used as a reducer for preparation of spherical silver nanoparticles with high dispersion

He, Guoqiu; Li, Fenfang; Wen, Jiebin

doi:10.1007/s11771-015-2541-7

Cited by 6 publications

(4 citation statements)

References 20 publications

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“…In exploring the capability of amide‐based organic compounds as reductants, some studies have reported the use of N , N ‐dimethylacetamide (DMAc) in the synthesis of highly dispersed Ag spheroidal nanocrystals in a surfactant‐free system, in which DMAc served as a solvent, and a stabilizer, in addition to a reductant . However, in contrast to DMF, the exact mechanism involved in the oxidation of DMAc is yet to be explored.…”

Section: Case Studiesmentioning

confidence: 99%

“…Moreover, the reductant, depending on the physicochemical properties and experimental conditions, may directly affect the outcome of a synthesis due to its major impact on the reaction kinetics and thus the nucleation and growth of nanocrystals. To this end, many studies have recently started to systematically evaluate different types of reductants in an effort to elucidate the correlations between their properties and the final shape/morphology of the nanocrystals . Figure summaries a series of compounds that have been employed as reductants for the colloidal synthesis of metal nanocrystals through chemical reduction, differentiated by a large number of distinctive functional groups such as hydroxyl, carbonyl, and benzene, among others.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Colloidal Metal Nanocrystals: A Comprehensive Review on the Reductants

Rodrigues

Zhao

Yang

et al. 2018

Chemistry A European J

166

164

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There is a growing interest in controlling the synthesis of colloidal metal nanocrystals and thus tailoring their properties toward various applications. In this context, choosing an appropriate combination of reagents (e.g., salt precursor, reductant, capping agent, and stabilizer) plays a pivotal role in enabling the synthesis of metal nanocrystals with diversified sizes, shapes, and structures. Here we present a comprehensive review that highlights one of the key reagents for the synthesis of metal nanocrystals via chemical reduction: the reductants. We start with a brief introduction to the compounds commonly employed as reductants in the colloidal synthesis of metal nanocrystals by showing their oxidation half-reactions and the corresponding oxidation potentials. Then we offer specific examples pertaining to the controlled synthesis of metal nanocrystals, followed by some fundamental aspects covering the general mechanisms of metal ion reduction based on the Marcus Theory. Afterwards, we present a case-by-case discussion on a wide variety of reductants, including their major properties, reduction mechanisms, and additional effects on the final products. We illustrate these aspects by selecting key examples from the literature and paying close attention to the underlying mechanism in each case. At the end, we conclude by summarizing the highlights of the review and providing some perspectives on future directions.

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Section: Case Studiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Synthesis of Colloidal Metal Nanocrystals: A Comprehensive Review on the Reductants

Rodrigues

Zhao

Yang

et al. 2018

Chemistry A European J

166

164

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“…In order to improve the interface area and metal Materials 2023, 16, 5505 2 of 10 dispersion, much work had been completed recently [20,21]. The synergistic antibacterial activity of silver with cerium oxide composites was also discussed [20][21][22][23][24]. Li et al [20] reported that a Ag/CeO 2 nanocomposite prepared via selective laser welding in liquid had obvious composite interfaces.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of an Antibrowning Nanosized Ag-CeO2 Composite with Synergistic Antibacterial Ability

et al. 2023

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Nanosized Ag and CeO2 particles obtained through the hydrothermal method were physically mixed to obtain composite antibacterial agents. The comparative experiments of antibacterial properties showed that the antibacterial activity of the nanocomposites was improved compared to the nanoparticles alone, which indicated that the synergistic antibacterial effect existed between Ag and CeO2. On the one hand, ICP-MS results showed that the existence of CeO2 suppressed the silver ion release rate and provided the composite with the ability of antibrowning; on the other, EPR data indicated that more hydroxyl radicals (·OH) were generated by the interfacial interaction between nanosized Ag and nanosized CeO2. Hence, for the Ag-CeO2 composite antibacterial agent, hydroxyl radicals played an important role in causing bacterial death.

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“…Ag NPs can be reduced from Ag + by chemical reduction with several reducing agents such as sodium borohydride (NaBH 4 ), sodium citrate, N,N‐Dimethylformamide, N,N‐dimethylacetamide, aniline, ubiquitous natural organic matters . Among these reducing agents, NaBH 4 is widely used.…”

Section: Introductionmentioning

confidence: 99%

Reductant‐Free Synthesis of Silver Nanoparticles by Functionalized Hollow Doughnut Mesoporous Silica Nanoparticles for Preparation of Catalytic Nanoreactor

Patra

Kim

2018

ChemistrySelect

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This work reports a detailed investigation about functionalization of hollow doughnut mesoporous silica nanoparticles (hd-MSN) by N 1 -(3-Trimethoxysilylpropyl) diethylenetriamine (DAEAPTS). Interestingly, here we experimentally show that the tri-amino functional groups on hd-MSN (hd-MSN-NH 2 ) act as capping agent as well as reducing agent for silver ions (Ag + ) and the reduction reaction process can significantly influence the structure of the silver nanocrystals. Thus, we have deposited uniform 4.2 nm silver nanocrystals on the hd-MSN-NH 2 nanoparticles without any reducing agents. The size and the crystalline structure of Silver nanoparticles (Ag NPs) and silica nanoparticles were characterized by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and wide-angle X-ray diffraction, respectively. The mechanism of reduction of Ag + was clearly studied by FT-IR, FT-Raman, XRD and XPS studies. Ag/hd-MSN-NH 2 with special shape (hollow doughnut shape) could incorporate Ag NPs both inside and outside of hd-MSN. Here Ag/hd-MSN-NH 2 worked as nanoreactor. In our condition for catalytic reduction of 4-nitrophenol, the reaction rate reached 4.1 x10 À3 s À1 which is higher than many previous results. The Ag/hd-MSN-NH 2 nanocatalyst shows excellent reusability and high efficiency even after 10 cycles.[a] N.

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DMAc used as a reducer for preparation of spherical silver nanoparticles with high dispersion

Cited by 6 publications

References 20 publications

Synthesis of Colloidal Metal Nanocrystals: A Comprehensive Review on the Reductants

Synthesis of Colloidal Metal Nanocrystals: A Comprehensive Review on the Reductants

Preparation and Characterization of an Antibrowning Nanosized Ag-CeO2 Composite with Synergistic Antibacterial Ability

Reductant‐Free Synthesis of Silver Nanoparticles by Functionalized Hollow Doughnut Mesoporous Silica Nanoparticles for Preparation of Catalytic Nanoreactor

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