Synthesis and Applications of Functional Nanomaterials

Abstract The unique physical and chemical properties and variable application potential of nanomaterials are continuously devoted to stimulating scientists’ studying enthusiasm. Extremely fine grains bring quantities excellent properties such as low density, low elastic modulus, high resistance and low thermal conductivity to nanomaterials, which has extensive use in the photoelectric field, environment, bioengineering and other fields. The research progress of graphene quantum dots, transparent reflective coatings and self-assembled nanotubes are mainly demonstrated. This paper shows the role of graphene quantum dots in solar cells, summarizes the synthesis methods of self-assembled nanotubes and their applications in bioengineering, and describes the development of transparent thermal reflective coatings for energy-saving glass attributed to providing relevant reference and basis for the development and research of nanomaterials.

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Bimetallic Nanocrystals: Structure, Controllable Synthesis and Applications in Catalysis, Energy and Sensing

Nanomaterials ◽

10.3390/nano11081926 ◽

2021 ◽

Vol 11 (8) ◽

pp. 1926

Author(s):

Gaojie Li ◽

Wenshuang Zhang ◽

Na Luo ◽

Zhenggang Xue ◽

Qingmin Hu ◽

...

Keyword(s):

Gas Sensing ◽

Chemical Properties ◽

Research Progress ◽

Synthesis Methods ◽

Controlled Synthesis ◽

Controllable Synthesis ◽

Composition And Structure ◽

Bimetallic Nanocrystals ◽

Physical And Chemical ◽

And Chemical Properties

In recent years, bimetallic nanocrystals have attracted great interest from many researchers. Bimetallic nanocrystals are expected to exhibit improved physical and chemical properties due to the synergistic effect between the two metals, not just a combination of two monometallic properties. More importantly, the properties of bimetallic nanocrystals are significantly affected by their morphology, structure, and atomic arrangement. Reasonable regulation of these parameters of nanocrystals can effectively control their properties and enhance their practicality in a given application. This review summarizes some recent research progress in the controlled synthesis of shape, composition and structure, as well as some important applications of bimetallic nanocrystals. We first give a brief introduction to the development of bimetals, followed by the architectural diversity of bimetallic nanocrystals. The most commonly used and typical synthesis methods are also summarized, and the possible morphologies under different conditions are also discussed. Finally, we discuss the composition-dependent and shape-dependent properties of bimetals in terms of highlighting applications such as catalysis, energy conversion, gas sensing and bio-detection applications.

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Preparation, pharmacokinetic and application of gold nanoclusters (AuNCs) in tumor treatment

Current Medicinal Chemistry ◽

10.2174/0929867328666210331145134 ◽

2021 ◽

Vol 28 ◽

Author(s):

Ting Yang ◽

Jun Zhang ◽

Yao Yu ◽

Taolei Sun

Keyword(s):

Water Solubility ◽

Stokes Shift ◽

Gold Nanoclusters ◽

Chemical Properties ◽

Research Progress ◽

Synthesis Methods ◽

Tumor Treatment ◽

Synthesis Strategy ◽

Physical And Chemical

: As a new type of nanomaterials, the gold nanoclusters (AuNCs) perform many special physical and chemical properties, such as large Stokes shift, relatively simple preparation, good water solubility, low toxicity and good biocompatibility, which make them show infinite potential in various fields, especially in cancer treatment. In recent years, the great progress has been made in the preparation, functionalization and biomedical applications of the AuNCs. In this article, the latest research progress and synthesis methods of the AuNCs have been summarized, emphasizing the preparation using the "bottom-up" synthesis strategy. Furthermore, we introduced the in vivo pharmacokinetic performance of the AuNCs. The last part, we exemplified the applications of the AuNCs in biomedicine, including photothermal therapy (PTT), bioimaging, drug delivery and radiotherapy sensitization, which further confirmed the great potential of the AuNCs in tumor treatment.

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Quasi-Continuously Tuning the Size of Graphene Quantum Dots via an Edge-Etching Mechanism

MRS Advances ◽

10.1557/adv.2016.198 ◽

2016 ◽

Vol 1 (20) ◽

pp. 1459-1467 ◽

Cited By ~ 2

Author(s):

Shujun Wang ◽

Ivan S. Cole ◽

Dongyuan Zhao ◽

Qin Li

Keyword(s):

Quantum Dots ◽

Chemical Reactivity ◽

Quantum Confinement Effect ◽

Graphene Quantum Dots ◽

Chemical Properties ◽

Practical Applications ◽

Etching Mechanism ◽

Great Possibility ◽

Scientific Attention ◽

Physical And Chemical

ABSTRACTGraphene quantum dots (GQDs), a nano version of graphene whose interesting properties that distinguish them from bulk graphene, have recently received significant scientific attention. The quantum confinement effect referring to the size-dependence of physical and chemical properties opens great possibility in the practical applications of this material. However, tuning the size of graphene quantum dots is still difficult to achieve. Here, an edge-etching mechanism which is able to tune the size of GQDs in a quasi-continuous manner is discovered. Different from the ‘unzipping’ mechanism which has been adopted to cut bulk graphitic materials into small fragments and normally cut through the basal plane along the ‘zig-zag’ direction where epoxy groups reside, the mechanism discovered in this research could gradually remove the peripheral carbon atoms of nano-scaled graphene (i.e. GQDs) due to the higher chemical reactivity of the edge carbon atoms than that of inner carbon atoms thereby tuning the size of GQDs in a quasi-continuous fashion. It enables the facile manipulate of the size and properties of GQDs through controlling merely the reaction duration. It is also believed the as discovered mechanism could be generalized for synthesizing various sizes of GQDs from other graphitic precursors (e.g. carbon fibres, carbon nanotubes, etc).

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Research Progress of Tungsten Nanorods and Nanoplatelets

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.989-994.552 ◽

2014 ◽

Vol 989-994 ◽

pp. 552-555

Author(s):

Ai Min Jiang ◽

Xian Quan Jiang ◽

Jin Yang ◽

Rong Jie Yang ◽

Rong Yu

Keyword(s):

Tungsten Carbide ◽

Vapour Deposition ◽

Chemical Properties ◽

Research Progress ◽

Synthesis Methods ◽

Production Methods ◽

One Dimensional ◽

Nanostructured Tungsten Carbide ◽

Physical And Chemical ◽

And Chemical Properties

Because of the characteristics of both one dimensional nanostructure and excellent physical and chemical properties, the kinds of novel nanomaterials-tungsten carbide nanowires, have important academic significance and practical meaning. The research development of one-dimensional nanostructured tungsten carbide is reviewed. The production methods of one-dimensional nanostructured tungsten carbide, such as nanotubes, nanorods, nanowires and nanoneedles by thermal decomposition technique, vapour deposition technique, magnetron sputtering technique, Eruptive heating technique and template technique respectively are systematically introduced. This paper summarizes the growth mechanisms and the problems involved in the existing synthesis methods. The research tendency is also forecasted.

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Graphene-Based Anode Nanomaterials for Microbial Fuel Cells: A Review

Current Nanoscience ◽

10.2174/1573413717666210623153625 ◽

2021 ◽

Vol 17 ◽

Author(s):

Yuan Chen ◽

Zhiwei Zhao ◽

Boai Li ◽

Zhengjin Weng ◽

Yong Fang ◽

...

Keyword(s):

Microbial Fuel Cells ◽

Sewage Treatment ◽

Conductive Polymer ◽

Three Dimensional ◽

Chemical Properties ◽

Electrical Energy ◽

Research Progress ◽

Synthesis Methods ◽

Metal Composite ◽

Physical And Chemical

: Microbial fuel cell (MFC) is a novel technology that uses biological catalysts to directly convert chemical energy in sewage organic matter into electrical energy. The performance of MFC is greatly influenced by the properties of electrode anode in MFC. Therefore, how to obtain specific electrode anode with excellent physical and chemical properties has become the focus of MFC research. Graphene has been widely concerned and gained extensive research and increasing development in the field of MFC due to its excellent electrical conductivity, catalytic properties, and outstanding specific surface area. In particular, the performance of MFCs has been improved by using graphene-based anodes instead of conventional unmodified anodes, which benefits from high biocompatibility, fast electron transfer efficiency, and preferrable bacteria colonization. In this review, various graphene-based nanomaterials are introduced as anodes in MFC, such as graphene/carbon nanocomposites, graphene/metal composite, graphene/metal oxide composite, graphene/conductive polymer composite, and three-dimensional graphene aerogels. This review also provides recent research progress in graphene-based nanomaterials, including synthesis methods, the structure, and the characteristics of these nanomaterials. Furthermore, the influences of graphene-based anodes on the electricity generation performance of MFCs are particularly reviewed to provide an efficient indication in selecting suitable graphene-based anode material for developing MFCs to realize sewage treatment.

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Silicon quantum dots: chemical, physical synthesis, and applications in fluorescence detection, solar cell, photocatalyst and composite

Current Nanoscience ◽

10.2174/1573413717666210412152255 ◽

2021 ◽

Vol 17 ◽

Author(s):

Wanzhe Tong ◽

Qinhong Yin ◽

Dong Fang ◽

Taofang Zeng ◽

Jianhong Yi

Keyword(s):

Quantum Dots ◽

Solar Cell ◽

Quantum Dot ◽

Fluorescence Detection ◽

Research Progress ◽

Synthesis Methods ◽

Silicon Quantum Dots ◽

Preparation Methods ◽

Application Fields ◽

Physical And Chemical

: Silicon quantum dots (Si QDs) with the unique properties in light, electricity, magnetism and heat possess the advantages of non-toxic, environmental protection and abundant reserves. They are widely used in various fields and have great potential for development. Till now, numerous researchers have reported the research progress of Si QDs, or elaborated the behavior mechanism. However, there are few summarization and comparison on the properties of quantum dot properties in different fields and different preparation methods. Besides, the parameters of Si QDs vary greatly in different application fields, which is worthy of comparison and summary. During the current work, we review the research progress and synthesis methods in recent years. The main influencing factors of Si QDs of different preparation methods (physical and chemical) and different application properties (fluorescence detection, solar cell, photocatalyst and composite) are compared and discussed in detail. Therefore, this paper aims to find promising preparation methods for different application fields, and to provide a clear direction for researchers to study Si QDs in different directions.

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Stimuli responsive dynamic transformations in supramolecular gels

Chemical Society Reviews ◽

10.1039/d0cs01166e ◽

2021 ◽

Author(s):

Santanu Panja ◽

Dave J. Adams

Keyword(s):

Chemical Properties ◽

Physical And Chemical Properties ◽

Stimuli Responsive ◽

Dynamic Changes ◽

Supramolecular Gels ◽

Self Assembled ◽

Physical And Chemical ◽

And Chemical Properties

Stimuli responsive dynamic changes in the networks of self-assembled gels result in an alteration of physical and chemical properties of the gel with time.

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Electrochemical recognition of tryptophan enantiomers using self-assembled diphenylalanine structures induced by graphene quantum dots, chitosan and CTAB

Electrochemistry Communications ◽

10.1016/j.elecom.2017.08.024 ◽

2017 ◽

Vol 83 ◽

pp. 61-66 ◽

Cited By ~ 10

Author(s):

Lili Guo ◽

Liping Bao ◽

Baozhu Yang ◽

Yongxin Tao ◽

Huihui Mao ◽

...

Keyword(s):

Quantum Dots ◽

Graphene Quantum Dots ◽

Tryptophan Enantiomers ◽

Self Assembled ◽

Electrochemical Recognition

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Facile and Large-scale Synthesis of Graphene Quantum Dots Functionalized with Morpholine for Selective Targeting and Imaging of Lysosome

NANO ◽

10.1142/s1793292021501137 ◽

2021 ◽

pp. 2150113

Author(s):

Yingying Nie ◽

Zengjie Fan

Keyword(s):

Quantum Dots ◽

Large Scale ◽

Graphene Quantum Dots ◽

Diagnosis And Treatment ◽

Uniform Size ◽

Scale Method ◽

Selective Targeting ◽

Application Potential ◽

Good Biocompatibility ◽

Imaging Properties

The lack of targeting selection to lysosome limits the application of graphene quantum dots (GQDs) in the diagnosis and treatment of lysosome-related disease. In this study, we developed a facile, environmentally friendly and large-scale method to prepare [Formula: see text]-aminomorpholine (Am)-modified GQDs (Am-GQDs) via a simple hydrothermal method. The physicochemical, optical, biocompatible and targeted imaging properties were evaluated systematically. The results indicated that the synthesized Am-GQDs had a uniform size distribution and the size was around 2[Formula: see text]nm. In addition, the synthesized Am-GQDs had excellent optical properties, fluorescent stability, and good biocompatibility. More importantly, they can selectively target and image lysosome in a relatively short coculture time with cells, demonstrating their application potential in the diagnosis and treatment of lysosomal-related diseases.

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