Systematic review of catalyst nanoparticles synthesized by solution process: towards efficient carbon nanotube growth

Azam, Mohd Asyadi; Zulkapli, Nor Najihah; Nawi, Zulhilmi Mohamed; Azren, Nik Mohamad

doi:10.1007/s10971-014-3600-5

Cited by 10 publications

(6 citation statements)

References 101 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Different production processes can result in varying energy consumption per kilogram of carbon nanotubes [46]. The production process of CNTs includes steps such as pyrolysis of carbon raw materials [47], gas-phase nucleation, and growth [48], all of which require a considerable amount of energy consumption. It is estimated that producing 1 kg of carbon nanotubes may require 1800 MJ of energy and emits 125 kg of carbon dioxide [26,49].…”

Section: Manufacturing Processmentioning

confidence: 99%

Effects of Multidimensional Carbon-Based Nanomaterials on the Low-Carbon and High-Performance Cementitious Composites: A Critical Review

Gao,

Fang,

et al. 2024

Materials

View full text Add to dashboard Cite

Cementitious composites are ubiquitous in construction, and more and more research is focused on improving mechanical properties and environmental effects. However, the jury is still out on which material can achieve low-carbon and high-performance cementitious composites. This article compares the mechanical and environmental performance of zero-dimensional fullerenes, one-dimensional carbon nanotubes (CNTs), two-dimensional graphene oxide (GO), and three-dimensional nano-graphite platelets (NGPs) on cementitious composites. The literature review shows that two-dimensional (2D) GO has the best mechanical and environmental performance, followed by 3D NGPs, 1D CNTs, and 0D fullerenes. Specifically, GO stands out for its lower energy consumption (120–140 MJ/kg) and CO2 emissions (0.17 kg/kg). When the optimal dosage (0.01–0.05 wt%) of GO is selected, due to its high specific surface area and strong adhesion to the matrix, the compressive strength of the cementitious composites is improved by nearly 50%. This study will help engineers and researchers better utilize carbon-based nanomaterials and provide guidance and direction for future research in related fields.

show abstract

Section: Manufacturing Processmentioning

confidence: 99%

Effects of Multidimensional Carbon-Based Nanomaterials on the Low-Carbon and High-Performance Cementitious Composites: A Critical Review

Gao,

Fang,

et al. 2024

Materials

View full text Add to dashboard Cite

show abstract

“…Micelles encapsulate nucleic acids and drugs and are generally composed of phospholipids arranged in closed spherical monolayers, but unlike liposomes, lack an aqueous core [34]. There are three main types of micelles: normal (spherical) micelles, reverse micelles (where the orientation of the nonpolar and polar phases has been inverted), and bilayer lamellar micelles [40]. Polymeric micelles (PMs) are a subset of micelles, which are formed by the spontaneous arrangement of amphiphilic block copolymers in aqueous solutions [41].…”

Section: Rna-interference Therapiesmentioning

confidence: 99%

RNA-Based Therapeutics: Current Developments in Targeted Molecular Therapy of Triple-Negative Breast Cancer

et al. 2021

View full text Add to dashboard Cite

Triple-negative breast cancer (TNBC) is a highly heterogeneous and aggressive cancer that has the highest mortality rate out of all breast cancer subtypes. Conventional clinical treatments targeting ER, PR, and HER2 receptors have been unsuccessful in the treatment of TNBC, which has led to various research efforts in developing new strategies to treat TNBC. Targeted molecular therapy of TNBC utilizes knowledge of key molecular signatures of TNBC that can be effectively modulated to produce a positive therapeutic response. Correspondingly, RNA-based therapeutics represent a novel tool in oncology with their ability to alter intrinsic cancer pathways that contribute to poor patient prognosis. Current RNA-based therapeutics exist as two major areas of investigation—RNA interference (RNAi) and RNA nanotherapy, where RNAi utilizes principles of gene silencing, and RNA nanotherapy utilizes RNA-derived nanoparticles to deliver chemotherapeutics to target cells. RNAi can be further classified as therapeutics utilizing either small interfering RNA (siRNA) or microRNA (miRNA). As the broader field of gene therapy has advanced significantly in recent years, so too have efforts in the development of effective RNA-based therapeutic strategies for treating aggressive cancers, including TNBC. This review will summarize key advances in targeted molecular therapy of TNBC, describing current trends in treatment using RNAi, combination therapies, and recent efforts in RNA immunotherapy, utilizing messenger RNA (mRNA) in the development of cancer vaccines.

show abstract

“…At high temperature, these metals have high solubility of carbon and a high diffusion rate, which is very helpful during the CNT growth process. (24) Furthermore, the melting point for such catalyst candidates is suitable for synthesizing CNTs since the growth temperature is in the range of 700-900 °C. (25) There are other metals in the same group with potential for CNT growth, such as chrome and copper and theirs alloys and compounds.…”

Section: Cntsmentioning

confidence: 99%

“…Moreover, different deposition methods of metal catalyst nanoparticles have been investigated. These methods are well reported in a review published by Azam et al (24) Currently, laser ablation, electric arc discharge, and chemical vapor deposition (CVD) are the most common and well-explored techniques of synthesizing CNTs. A comparison of them is shown in Table 4.…”

Section: Cntsmentioning

confidence: 99%

“…The laser vaporizes graphite by scanning its surface at higher temperatures, around 1000-1200 °C. (14,24) The fullerenes and CNTs produced by the sublimation of graphite are displaced by an inert gas flow (helium or argon), coalesce in the gas phase, and finally are deposited on a cooled copper collector. (14) Using laser ablation, it is possible to define the SWCNT or MWCNT structure by specifying the metal catalytic particles.…”

Section: Cntsmentioning

confidence: 99%

See 1 more Smart Citation

One-Dimensional Carbon Nanostructures—From Synthesis to Nano-electromechanical Systems Sensing Applications—

2017

Sensors and Materials

View full text Add to dashboard Cite

The fundamental properties of one-dimensional (1D) carbon nanostructures and their promising technological applications have stimulated significant research in different areas. Because of their outstanding electrical and mechanical properties, these nanostructures have emerged as a new class of sensor material with real potential for a variety of nano-electromechanical systems (NEMS). Several studies have shown that the performance of a NEMS device is significantly affected by the material properties of the nanostructures used to build it. For this reason, a section of this review is devoted to the synthesis and properties of 1D carbon nanostructures including nanotubes, nanofibers, and nanowires. Thereafter, some NEMS-based sensors using 1D carbon nanostructures are introduced and issues related to their fabrication processes are addressed. The goal of this brief review is to outline the benefits of the use of 1D carbon nanostructures, the current status of development and challenges to enable their widespread application as sensing elements in NEMS devices.

show abstract

Systematic review of catalyst nanoparticles synthesized by solution process: towards efficient carbon nanotube growth

Cited by 10 publications

References 101 publications

Effects of Multidimensional Carbon-Based Nanomaterials on the Low-Carbon and High-Performance Cementitious Composites: A Critical Review

Effects of Multidimensional Carbon-Based Nanomaterials on the Low-Carbon and High-Performance Cementitious Composites: A Critical Review

RNA-Based Therapeutics: Current Developments in Targeted Molecular Therapy of Triple-Negative Breast Cancer

One-Dimensional Carbon Nanostructures—From Synthesis to Nano-electromechanical Systems Sensing Applications—

Contact Info

Product

Resources

About

Systematic review of catalyst nanoparticles synthesized by solution process: towards efficient carbon nanotube growth

Cited by 10 publications

References 101 publications

Effects of Multidimensional Carbon-Based Nanomaterials on the Low-Carbon and High-Performance Cementitious Composites: A Critical Review

Effects of Multidimensional Carbon-Based Nanomaterials on the Low-Carbon and High-Performance Cementitious Composites: A Critical Review

RNA-Based Therapeutics: Current Developments in Targeted Molecular Therapy of Triple-Negative Breast Cancer

One-Dimensional Carbon Nanostructures&mdash;From Synthesis to Nano-electromechanical Systems Sensing Applications&mdash;

Contact Info

Product

Resources

About

One-Dimensional Carbon Nanostructures—From Synthesis to Nano-electromechanical Systems Sensing Applications—