In Situ Synchrotron X‐ray Characterization Shining Light on the Nucleation and Growth Kinetics of Colloidal Nanoparticles

Wu, Shao Peng; Li, Mingrui; Sun, Yugang

doi:10.1002/anie.201900690

Cited by 47 publications

(44 citation statements)

References 77 publications

(47 reference statements)

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“…During the radiation exposure, the water molecules break up, yielding transient products that act as strong oxidizing or reducing agents and reduce metal ions to neutral metal atoms, which further nucleate to form NPs. The synchrotron X-ray techniques enabled monitoring of the growth trajectories of colloidal NPs in real time [ 116 ]. The physical parameters critical for the synthesis of NPs include the radiation dose, pH of the system and the type of solvent used in the synthesis [ 117 ].…”

Section: Current Trends In Nmnps Synthesismentioning

confidence: 99%

Current Strategies for Noble Metal Nanoparticle Synthesis

2021

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Noble metals have played an integral part in human history for centuries; however, their integration with recent advances in nanotechnology and material sciences have provided new research opportunities in both academia and industry, which has resulted in a new array of advanced applications, including medical ones. Noble metal nanoparticles (NMNPs) have been of great importance in the field of biomedicine over the past few decades due to their importance in personalized healthcare and diagnostics. In particular, platinum, gold and silver nanoparticles have achieved the most dominant spot in the list, thanks to a very diverse range of industrial applications, including biomedical ones such as antimicrobial and antiviral agents, diagnostics, drug carriers and imaging probes. In particular, their superior resistance to extreme conditions of corrosion and oxidation is highly appreciated. Notably, in the past two decades there has been a tremendous advancement in the development of new strategies of more cost-effective and robust NMNP synthesis methods that provide materials with highly tunable physicochemical, optical and thermal properties, and biochemical functionalities. As a result, new advanced hybrid NMNPs with polymer, graphene, carbon nanotubes, quantum dots and core–shell systems have been developed with even more enhanced physicochemical characteristics that has led to exceptional diagnostic and therapeutic applications. In this review, we aim to summarize current advances in the synthesis of NMNPs (Au, Ag and Pt).

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Section: Current Trends In Nmnps Synthesismentioning

confidence: 99%

Current Strategies for Noble Metal Nanoparticle Synthesis

2021

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“…The reaction temperature, time, and solvent also impact the crystal size of MOFs. Decreasing the reaction temperature and shortening the reaction time mainly influence surface reactions and Fickian diffusion of the precursor, [ 42 ] which suppresses the kinetic growth rate and consequently produces MOFs with smaller crystals. Changing the solvent mixture ratio can change the solution supersaturation, allowing the size of MOF crystals to be adjusted.…”

Section: Synthesis Strategies Of Nanoscale Metal‐organic Frameworkmentioning

confidence: 99%

Recent Progress of Nanoscale Metal‐Organic Frameworks in Synthesis and Battery Applications

et al. 2020

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As one type of promising inorganic–organic hybrid crystal material, metal‐organic frameworks (MOFs) have attracted widespread attention in many potential fields, particularly in energy storage and conversion. Recently, effective strategies have been developed to construct uniform nanoscale MOFs (NMOFs), which not only retain inherent advantages of MOFs but also develop some improved superiorities, including shorter diffusion pathway for guest transportation and more accessible active sites for surface adsorption and reaction. Additonally, their nanometer size provides more opportunity for post‐functionalization and hybridization. In this review, recent progress on the preparation of NMOFs is summarized, primarily through bottom‐up strategies including reaction parameter‐ and coordination‐assisted synthesis, and top‐down strategies such as liquid exfoliation and salt‐template confinement. Additionally, recent applications of NMOFs in batteries as electrodes, separators, and electrolytes is discussed. Finally, some important issues concerning the fabrication and application are emphasized, which should be paid attention in future.

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“…Nevertheless, most of the synthetic development continues to proceed in an empirical manner as the knowledge of the chemistry behind the nucleation and growth process is still rather scarce. Increasing efforts are dedicated to advancing the field through the development of in situ methods based on transmission electron microscopy (TEM) and on X‐rays . Such studies enable the observation of the chemical and structural transformations occurring during the nucleation and growth of NCs with atomic resolution.…”

Section: Introductionmentioning

confidence: 99%

“…In the course of the last decade, in situ X-ray studies have been instrumental to highlighting the diversity of NC formation pathways which go beyond the CNT. [6,21,31,32,34,40] In situ reactors have evolved from simple vials and capillaries to custom designed cells that more closely resemble the reactors used in the chemistry laboratory. [6,21,31,32,34,40] This feature is highly desirable as changes in the reaction environment (i.e.…”

Section: Introductionmentioning

confidence: 99%

“…[6,21,31,32,34,40] In situ reactors have evolved from simple vials and capillaries to custom designed cells that more closely resemble the reactors used in the chemistry laboratory. [6,21,31,32,34,40] This feature is highly desirable as changes in the reaction environment (i.e. reaction volumes, heating ramps, temperature homogeneity, stirring) are known to impact the reaction outcome.…”

Section: Introductionmentioning

confidence: 99%

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Polymer Lamellae as Reaction Intermediates in the Formation of Copper Nanospheres as Evidenced by In Situ X‐ray Studies

et al. 2020

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The classical nucleation theory (CNT) is the most common theoretical framework used to explain particle formation. However, nucleation is a complex process with reaction pathways which are often not covered by the CNT. Herein, we study the formation mechanism of copper nanospheres using in situ X‐ray absorption and scattering measurements. We reveal that their nucleation involves coordination polymer lamellae as pre‐nucleation structures occupying a local minimum in the reaction energy landscape. Having learned this, we achieved a superior monodispersity for Cu nanospheres of different sizes. This report exemplifies the importance of developing a more realistic picture of the mechanism involved in the formation of inorganic nanoparticles to develop a rational approach to their synthesis.

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In Situ Synchrotron X‐ray Characterization Shining Light on the Nucleation and Growth Kinetics of Colloidal Nanoparticles

Cited by 47 publications

References 77 publications

Current Strategies for Noble Metal Nanoparticle Synthesis

Current Strategies for Noble Metal Nanoparticle Synthesis

Recent Progress of Nanoscale Metal‐Organic Frameworks in Synthesis and Battery Applications

Polymer Lamellae as Reaction Intermediates in the Formation of Copper Nanospheres as Evidenced by In Situ X‐ray Studies

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