Review
Chemistry, Multidisciplinary
Peng-Xiang Hou, Feng Zhang, Lili Zhang, Chang Liu, Hui-Ming Cheng
Summary: The FCCVD is an important technique for synthesizing high-quality CNTs with various morphologies, offering advantages of simplicity, controllability, and scalability. Researchers review the controlled growth, properties, and applications of CNTs, discussing key challenges and prospects for the future.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Review
Chemistry, Multidisciplinary
Daniil A. Ilatovskii, Evgeniia P. Gilshtein, Olga E. Glukhova, Albert G. Nasibulin
Summary: This article analyzes the latest research achievements in the optoelectronic performance of transparent conducting films (TCFs) based on single-walled carbon nanotubes (SWCNTs), and briefly reviews various methods for evaluating the performance of transparent electrodes. The article also describes a roadmap for further research and development of transparent conductors using rational design.
Article
Chemistry, Physical
Kaicheng Jia, Ziteng Ma, Wendong Wang, Yongliang Wen, Huanxin Li, Yeshu Zhu, Jiawei Yang, Yuqing Song, Jiaxin Shao, Xiaoting Liu, Qi Lu, Yixuan Zhao, Jianbo Yin, Luzhao Sun, Hailin Peng, Jincan Zhang, Li Lin, Zhongfan Liu
Summary: Chemical vapor deposition is a promising method for controlled growth of high-quality graphene films. Cold-wall CVD system has the potential for industrial-scale production, but the quality of graphene is still limited. This study presents an efficient method for batch synthesis of high-quality graphene films with millimeter-sized domains.
Article
Nanoscience & Nanotechnology
Kishan Thodkar, Fabian Gramm
Summary: The high field-effect mobility and two-dimensional nature of graphene films make it a promising material for developing sensitive sensors with low power consumption. The chemical vapor deposition process allows scalable production of high-quality graphene films. This study presents a simplified fabrication process to develop suspended chemical vapor deposition graphene devices with enhanced field-effect mobility operating at room temperature.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Yajuan Xie, Chengwen Tan, Xiaodong Yu, Zhihua Nie, Zhichao Liu
Summary: In this study, tungsten coatings were deposited at 300-610 degrees C from WF6 and H-2 by atmospheric pressure chemical vapor deposition (APCVD). It was found that regardless of the density of the coating, tungsten powders adhered to the furnace walls. These powders were produced by homogeneous reactions in the gas phase near the substrate and adhered to the inner wall of the furnace as they moved with the fluid. The study discussed the kinetics, structure, and growth mode of tungsten coatings in the APCVD system, highlighting the contributions of homogeneous reactions to the growth of dense tungsten coatings.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Coatings & Films
Emanuele Ghio, Giovanni Bolelli, Alessandro Berte, Emanuela Cerri
Summary: This paper focuses on the performance of thin-film coatings on additively manufactured Ti-6Al-4V substrates. The study investigates how post-process heat treatments and surface finishing affect the mechanical strength and surface roughness, and subsequently influence the performance of coatings deposited by physical or plasma-enhanced chemical vapor deposition. The results show that the adhesion of coatings on harder surfaces treated below the beta-transus is higher, while the substrate roughness has a dominant effect on the sliding wear of the coatings.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Ali Mazaheri, Mohammad Javadi, Yaser Abdi
Summary: Use of diborane pyrolysis as a boron source enabled growth of atomic-thickness borophene sheets through chemical vapor deposition. Systematic studies on temperature, deposition rate, and pressure effects on 2D boron sheets growth were conducted, along with detailed analyses on morphology and crystalline phase. CVD-grown borophene layers exhibited an average thickness of 4.2 angstrom, chi(3) crystalline structure, and metallic conductivity.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Dongliang Wu, Zhiqiang Yao, Xiuying Sun, Xiaodong Liu, Lei Liu, Ruliang Zhang, Chengguo Wang
Summary: The study investigated the distribution of metal catalyst on carbon fiber surface using the Platform effect of polydopamine (PDA). Through PDA-based carbon coating, directional Carbon nanotubes (CNTs) were grown on high strength carbon fibers, enhancing mechanical properties and developing interface theory of Carbon fiber reinforced plastic (CFRP).
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Green & Sustainable Science & Technology
Veyis Selen, Omer Guler, Mehrab Nodehi, Ahmet Sari, Ali Yaras, Osman Gencel, Aliakbar Gholampour, Togay Ozbakkaloglu
Summary: Recent growth in materials science and engineering technologies has led to new applications in the construction industry for smart and electrically conductive products. This study examines the use of Fe3O4-MWCNTs nanocomposites in cementitious mortars to enhance electrical conductivity. The results show a decrease in electrical resistivity and an increase in porosity, which have both positive and negative effects on the physico-mechanical properties of the mortars. However, the improvement in electrical conductivity without significant compromise to the properties makes these materials suitable for various fields.
Article
Chemistry, Physical
Ben McLean, Izaac Mitchell, Feng Ding
Summary: This study reveals the mechanism of single-walled carbon nanotube (SWCNT) growth in alcohol chemical vapor deposition (ACVD) through density functional tight binding molecular dynamics simulations. The results demonstrate that the catalyst composition can be controlled by reaction pathways mediated by hydroxyl OH radicals, leading to promotion of SWCNT growth.
Article
Materials Science, Composites
Xunpeng Zhou, Yafeng Wang, Lijun Xiao, Mingyu Zhang, Zhean Su, Qizhong Huang
Summary: A new type of carbon aerogel called carbon black aerogel was successfully prepared using chemical vapor deposition without catalyst. The carbon black aerogel with a well-developed branching network structure and good graphitization showed low density (0.11 g/cm(3)), high compressive strength (0.543 MPa), extremely low thermal conductivity (0.049 W/(m center dot K)), and outstanding super-hydrophobic properties. The study also discussed the process of forming aerogels using carbon black as the base material. This finding could provide a cost-effective method for fabricating carbon aerogels and expand the range of carbon materials available.
COMPOSITES COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Afshin Dianatdar, Adrivit Mukherjee, Ranjita K. Bose
Summary: Polypyrrole is a promising conjugated polymer for use in electrochemical energy storage devices, thanks to its pseudocapacitive behavior and ability to hybridize with traditional carbon-based materials. The processing condition for hybridization is critical for long-term electrode performance. Depositing polypyrrole onto 3D carbon fiber fabric using oxidative chemical vapor deposition allows for uniform and controlled thickness deposition. The stability of the polypyrrole-carbon fiber electrode was tested, and the results showed that electrode stability is thickness-dependent and tuning it in the correct voltage window is crucial for optimal long-term performance.
Article
Engineering, Chemical
Bhaskar Bhaduri, Rishabh Anand Omar, Nishith Verma
Summary: The present study synthesizes carbon nanofibers (CNF) over a graphitic carbon nitride (g-C3N4) substrate without requiring an external carbon-source. In this novel route of the synthesis, g-C3N4 acts as the substrate as well as the internal source of carbon. Ni nanoparticles (NPs) dispersed in g-C3N4 catalyze the decomposition of triazine rings and N heterocycles in the material to form a web of CNF over g-C3N4. Tested for its catalytic activity towards the reduction of aqueous nitrobenzene (NB) using the hydrazine monohydrate reducing agent, Ni-CNF/g-C3N4 shows an approximately 95% conversion of NB. The high catalytic activity of the material is ascribed to the combined effects of g-C3N4, Ni NPs, and CNF. The present study has clearly established an efficient, easy, and inexpensive route for synthesizing CNF-based 3D nanostructures that are useful in many engineering applications including energy and environment.
CHEMICAL ENGINEERING SCIENCE
(2023)
Article
Chemistry, Physical
Zhichao Guo, Zhenya Ye, Mengqing Yin, Shixun Dai, Xiaohui Zhang, Wei Wang, Zhaoping Liu
Summary: Modulating the electrical properties of graphene films through doping is crucial for building desired electronic devices. This study developed a novel condensation-assisted chemical vapor deposition (CVD) method to synthesize high-quality nitrogen-doped graphene films at low temperatures. Compared to conventionally synthesized graphene, the nitrogen-doped graphene films synthesized using this method showed significantly lower defects and improved carrier mobility. This improved CVD method provides a facile and well-controlled approach for fabricating high-quality nitrogen-doped graphene films, which is useful for building electronic devices with high electrical performance.
Review
Chemistry, Multidisciplinary
Karen K. Gleason
Summary: Initiated chemical vapor deposition (iCVD) is a dry method for designing organic and hybrid polymers, which provides conformal surface modification over intricate geometries. iCVD films can be grown with uniformity, high-purity, and pinhole-free properties, and can be applied onto flexible substrates, 2D materials, and liquids. The functional groups in iCVD polymers offer fine-tuning of surface energy, surface charge, and responsive behavior. iCVD polymers have various morphologies, such as nanostructured surfaces, nanoporosity, and shaped particles, and they are widely used in sensing, electronics, optics, electrochemical energy storage, and biotechnology applications.
ADVANCED MATERIALS
(2023)
Article
Engineering, Manufacturing
Lucky Bagha, Shankar Sehgal, Amit Thakur, Harmesh Kumar
JOURNAL OF MANUFACTURING PROCESSES
(2017)
Review
Metallurgy & Metallurgical Engineering
Gavish Uppal, Amit Thakur, Amit Chauhan, Saroj Bala
Summary: Magnesium has emerged as a promising biomaterial for bone tissue regeneration and support due to its biodegradability, mechanical properties similar to human bone, osteoconductive nature, and anti-bacterial properties. However, its rapid bio-corrosion is a major concern, which can be addressed through alloying and surface coatings to improve mechanical integrity and degradation rate of magnesium-based implants.
JOURNAL OF MAGNESIUM AND ALLOYS
(2022)
Article
Engineering, Multidisciplinary
Lucky Bagha, Shankar Sehgal, Amit Thakur, Harmesh Kumar, Deepam Goyal
ENGINEERING RESEARCH EXPRESS
(2019)
Article
Materials Science, Multidisciplinary
Amit Thakur, Alakesh Manna, Sushant Samir
DIAMOND AND RELATED MATERIALS
(2017)
Proceedings Paper
Agricultural Engineering
Lucky Bagha, Shankar Shegal, Amit Thakur
4TH INTERNATIONAL CONFERENCE ON ADVANCEMENTS IN ENGINEERING & TECHNOLOGY (ICAET-2016)
(2016)
