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

Nanomaterials ◽  
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.

Research Progress of Tungsten Nanorods and Nanoplatelets

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.

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

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.

Effect of Nickel on Living Organism and the Research Progress

2013 ◽  
Vol 726-731 ◽  
pp. 310-314
Author(s):  
Ming Da Liu ◽  
Xiao Ming Ji ◽  
Yao Jing Wang
Keyword(s):  
Growth And Development ◽  
Chemical Properties ◽  
Living Organism ◽  
Rare Metal ◽  
Research Progress ◽  
Physical And Chemical Properties ◽  
High Concentration ◽  
Relevant Research ◽  
Physical And Chemical ◽  
And Chemical Properties

Nickel is a kind of rare metal which is widely distributed in the earth's crust, and is mainly used in manufacturing alloy. Nickel is a trace element essential to animals and plants growth and development, but high concentration of nickel will hamper the growth of plants and animals, and even produce toxic effects. This paper summarizes the physical and chemical properties of nickel, the sources of organisms exposed to nickel and the influence of different concentrations of nickel on animal and plant, and summarizes the relevant research progress.

A unique pathway of PtNi nanoparticle formation observed with liquid cell transmission electron microscopy

Nanoscale ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 1414-1418
Author(s):  
Liyun Zheng ◽  
Lixin Zhao ◽  
Songhao Zhao ◽  
Xiaowei Zhang ◽  
Karen C. Bustillo ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Chemical Properties ◽  
Controlled Synthesis ◽  
Physical And Chemical Properties ◽  
Nanoparticle Growth ◽  
Transmission Electron ◽  
Liquid Cell ◽  
Physical And Chemical ◽  
Synthesis Of Nanomaterials ◽  
And Chemical Properties

An understanding of nanoparticle growth is significant for controlled synthesis of nanomaterials with desired physical and chemical properties.

scholarly journals Outlook and overview of microplastics pollution in ecological environment

2020 ◽  
Vol 143 ◽  
pp. 02027
Author(s):  
Zhao Bin ◽  
Cheng Yongqiang ◽  
Guo Cuilian ◽  
Liu Maoke ◽  
Yao Puyu ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Research Progress ◽  
Ecological Environment ◽  
Future Research ◽  
Research Directions ◽  
Toxicological Effects ◽  
New Type ◽  
Future Research Directions ◽  
Physical And Chemical ◽  
And Chemical Properties

Microplastics are attracting more and more attention as a new type of pollutant in the ecological environment. Microplastics are difficult to degrade because of their unique physical and chemical properties. Some microplastics adsorbed toxic chemicals (e.g. heavy metals or organic pollutants) will cause a series of toxicological effects in organisms. This paper summarized the research progress in microplastics from the aspects of the types, distribution, detection and the toxicological effects. In addition, future research directions were also proposed and discussed.

scholarly journals Synthesis and Applications of Functional Nanomaterials

2021 ◽  
Vol 2133 (1) ◽  
pp. 012006
Author(s):  
Yujia Li ◽  
Hanzheng Xia ◽  
Jingyi Xu
Keyword(s):  
Quantum Dots ◽  
Graphene Quantum Dots ◽  
Chemical Properties ◽  
Research Progress ◽  
Synthesis Methods ◽  
Field Environment ◽  
Application Potential ◽  
Self Assembled ◽  
Reflective Coatings ◽  
Physical And Chemical

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.

scholarly journals Novel Nanofluidic Cells Based on Nanowires and Nanotubes for Advanced Chemical and Bio-Sensing Applications

Nanomaterials ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 90
Author(s):  
Xin-Yi Zhu ◽  
Bo-Ran Wang ◽  
Yi Gu ◽  
Hao Zhu ◽  
Lin Chen ◽  
...  
Keyword(s):  
Single Molecule ◽  
Pathogen Detection ◽  
Gas Sensing ◽  
Chemical Properties ◽  
Synthesis Methods ◽  
Sensing Applications ◽  
Research Activities ◽  
Nanofluidic Devices ◽  
Working Principle ◽  
Physical And Chemical

Since the first introduction of one-dimensional nanochannels for single-molecule detection, there has been increasing interest in modern nanofluidic systems, such as chemical and biological sensing applications. Recently developed nanowires (NWs) and nanotubes (NTs) have received tremendous attention due to their unique geometrical, physical and chemical properties, which are very attractive in this field. Here, we review the recent research activities in the field of novel nanofluidic cells based on NWs and NTs. First, we give a brief introduction of this field. Then the common synthesis methods of NWs and NTs are summarized. After that, we discuss the working principle and sensing mechanism of nanofluidic devices, which is fundamental to the interaction between these nanostructures and small molecules. Finally, we present the NW- and NT-based devices for chemical and bio-sensing applications, such as gas sensing, pathogen detection, DNA sequencing, and so forth.

scholarly journals Research Progress of Gas Sensing Performance of 2D Hexagonal WO3

2021 ◽  
Vol 9 ◽  
Author(s):  
Yueqi Li ◽  
Qin Zhou ◽  
Shoubing Ding ◽  
Zhimin Wu
Keyword(s):  
Gas Sensing ◽  
Low Cost ◽  
Chemical Properties ◽  
High Sensitivity ◽  
Oxide Semiconductor ◽  
Research Progress ◽  
Research Directions ◽  
Sensor Field ◽  
Sensitivity And Selectivity ◽  
Physical And Chemical

Metal oxide semiconductor gas sensing materials have attracted great research interest in the gas sensor field due to their outstanding physical and chemical properties, low cost, and easy preparation. Among them, two-dimensional hexagonal tungsten trioxide (2D h-WO3) is especially interesting because of its high sensitivity and selectivity to some gases. We firstly introduce the characteristics of 2D h-WO3 gas sensing materials and discuss the effects of microstructure, oxygen vacancy, and doping modification on the gas sensing properties of 2D h-WO3 mainly. Finally, we explore the application of 2D h-WO3 gas sensing materials and propose some research directions.

scholarly journals Research Progress on Continuous Cropping Obstacle and Green Control of Strawberry

2021 ◽  
Vol 251 ◽  
pp. 02044
Author(s):  
Zhengwei Xie ◽  
Qianqian Ma ◽  
Wanyun Peng ◽  
Zhide Wang ◽  
Peng Wu ◽  
...  
Keyword(s):  
Chemical Properties ◽  
Research Progress ◽  
Continuous Cropping ◽  
Physical And Chemical Properties ◽  
Urgent Problem ◽  
Sharp Decline ◽  
Yield And Quality ◽  
Prevention And Cure ◽  
Physical And Chemical ◽  
And Chemical Properties

Continuous cropping obstacle is a big problem of Strawberry planting. Continuous cropping obstacle leads to the accumulation of phenolic acids, imbalance of soil microorganism, deterioration of physical and chemical properties, resulting in sharp decline in Strawberry yield and quality. At present, the prevention and cure of continuous cropping obstacle of Strawberry is an urgent problem to be solved. The pathogen does not produce drug resistance, is safe to fresh fruit and does not pollute the environment.

scholarly journals Inorganic Boron-Based Nanostructures: Synthesis, Optoelectronic Properties, and Prospective Applications

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 538 ◽  
Author(s):  
Yan Tian ◽  
Zekun Guo ◽  
Tong Zhang ◽  
Haojian Lin ◽  
Zijuan Li ◽  
...  
Keyword(s):  
Rare Earth ◽  
Field Emission ◽  
Electrical Transport ◽  
Chemical Properties ◽  
Synthesis Methods ◽  
Electrical Transport Properties ◽  
Flexible Displays ◽  
Boron Nanowires ◽  
Physical And Chemical ◽  
And Chemical Properties

Inorganic boron-based nanostructures have great potential for field emission (FE), flexible displays, superconductors, and energy storage because of their high melting point, low density, extreme hardness, and good chemical stability. Until now, most researchers have been focused on one-dimensional (1D) boron-based nanostructures (rare-earth boride (REB6) nanowires, boron nanowires, and nanotubes). Currently, two-dimensional (2D) borophene attracts most of the attention, due to its unique physical and chemical properties, which make it quite different from its corresponding bulk counterpart. Here, we offer a comprehensive review on the synthesis methods and optoelectronics properties of inorganic boron-based nanostructures, which are mainly concentrated on 1D rare-earth boride nanowires, boron monoelement nanowires, and nanotubes, as well as 2D borophene and borophane. This review paper is organized as follows. In Section I, the synthesis methods of inorganic boron-based nanostructures are systematically introduced. In Section II, we classify their optical and electrical transport properties (field emission, optical absorption, and photoconductive properties). In the last section, we evaluate the optoelectronic behaviors of the known inorganic boron-based nanostructures and propose their future applications.

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