Article
Nanoscience & Nanotechnology
Daniel Weber, Ning Rui, Feng Zhang, Heng Zhang, Dimitriy Vovchok, Michael Wildy, Kevin Arizapana, Alexa Saporita, Jin Zhong Zhang, Sanjaya D. Senanayake, Ping Lu, Cheng Zhang
Summary: We synthesized a unique carbon nanosphere encapsulated Fe core-shell catalyst and investigated its catalytic performance in CO2 hydrogenation. Characterization techniques such as X-ray diffraction and Raman spectroscopy revealed the structure and composition of the catalyst, and CO was found to be the main product.
ACS APPLIED NANO MATERIALS
(2022)
Article
Materials Science, Composites
Zhenbang Zhang, Meizhen Liao, Maohua Li, Linhong Li, Xianzhe Wei, Xiangdong Kong, Shaoyang Xiong, Juncheng Xia, Liqin Fu, Tao Cai, Zhongbin Pan, Haonan Li, Fei Han, Cheng-Te Lin, Kazuhito Nishimura, Nan Jiang, Jinhong Yu
Summary: With the increasing demand for thermal management materials in the highly integrated electronic area, the development of high thermal conductive polymer composites is of great significance. In this study, a high thermal conductive and electric insulation thermal interface material (TIM) was fabricated by preparing a new type of CFs@SiC filler with a core-shell structure. The experimental results showed that the thermal conductivity of the material was 2402% higher than that of pure PDMS, with excellent tensile stress and volume resistivity.
COMPOSITES COMMUNICATIONS
(2022)
Article
Chemistry, Physical
Wen Qian Chen, Yi Heng Cheong, Xiaoxu Fu, Li Ya Ge, Andrei Veksha, Grzegorz Lisak
Summary: The study proposes a method for synthesizing GCN using Fe-assisted CCVD, resulting in higher yield and better functionality, leading to a 3D hierarchically porous material with higher specific capacitance, higher capacitance retention, and lower charge transfer resistance.
Article
Chemistry, Physical
Xiucai Sun, Xiaoting Liu, Zhongti Sun, Xintong Zhang, Yuzhu Wu, Yeshu Zhu, Yuqing Song, Kaicheng Jia, Jincan Zhang, Luzhao Sun, Wan-Jian Yin, Zhongfan Liu
Summary: This study reveals the importance of vapor catalysis in superclean graphene growth through density functional theory calculations, an ideal gas model, and a designed experiment. The study finds that the vapor mainly consists of Cui clusters, which have a significant impact on graphene growth. DFT calculations show that Cu clusters exhibit strong capabilities for adsorption, dehydrogenation, and decomposition, providing a sufficient supply of active carbon atoms for rapid graphene growth. Experimental validation confirms that increasing the amount of Cu vapor improves the growth rate and surface cleanliness of graphene.
Article
Materials Science, Multidisciplinary
Heng-chao Jin, Qian Sun, Ji-tong Wang, Chen Ma, Li-cheng Ling, Wen-ming Qiao
Summary: The multi-component porous Si-SiOx (pSi) and carbon nanofibers hybrids (pSi-CNFs) were successfully prepared by pretreatment of SiO and catalytic chemical vapor deposition. The core-shell structure formed by uniformly coating CNFs on the surface of pSi improved the conductivity of the composites and enhanced the cycling stability and capacity retention of the pSi-CNFs.
NEW CARBON MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Weichao Wang, Liu Gu, Liuying Wang, Chaoqun Ge, Wenhao Wang, Lingjie Hu, Yang Xing, Wang Ziang
Summary: CNTs@SiC composite absorber with one-dimensional tubular core-shell structure was prepared by CVD. It showed improved dielectric properties, impedance matching performance, and initial oxidation temperature of CNTs. The mass ratio of Si to CNTs was a key parameter affecting the electromagnetic properties of the composite, with the ratio of 1:1.5 achieving the best absorbing performance. The effective bandwidth for reflectivity less than -10 dB reached 4.8 GHz at a thickness of 1.7 mm. In the X band, a mass ratio of 1:2 resulted in the best absorbing effect, with an effective bandwidth up to 3 GHz. The unique one-dimensional core-shell structure of the CNTs@SiC composite absorber has the potential to provide excellent absorption performance at high temperatures.
RARE METAL MATERIALS AND ENGINEERING
(2022)
Article
Chemistry, Physical
Bochong Wang, Ying Ji, Congpu Mu, Yingjie Huo, Jianyong Xiang, Anmin Nie, Tianyu Xue, Kun Zhai, Zhongyuan Liu, Fusheng Wen
Summary: In this study, Fe3O4@polyaniline (Fe3O4@PANI) core-shell nanospheres were synthesized via a facile method and showed excellent microwave absorption properties. The conductive PANI coating significantly enhanced the microwave absorption ability of Fe3O4 nanospheres, leading to strong reflection loss and wide effective absorption bandwidth.
APPLIED SURFACE SCIENCE
(2022)
Review
Chemistry, Multidisciplinary
Wenqian Yao, Hongtao Liu, Jianzhe Sun, Bin Wu, Yunqi Liu
Summary: This review provides a comprehensive overview of current challenges and opportunities for chemical vapor deposition (CVD) growth, characterization, and electrical properties of graphene depending on the layer number and twist angles. Various state-of-the-art innovations using the CVD method are presented, and the underlying growth mechanisms and characterization methods are discussed.
ADVANCED FUNCTIONAL MATERIALS
(2022)
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)
Article
Chemistry, Physical
Chamseddine Bouhafs, Sergio Pezzini, Fabian R. Geisenhof, Neeraj Mishra, Vaidotas Miseikis, Yuran Niu, Claudia Struzzi, R. Thomas Weitz, Alexei A. Zakharov, Stiven Forti, Camilla Coletti
Summary: The study successfully synthesized rhombohedral graphene with a thickness of up to 9 layers, with alternating crystal domains identified in Raman spectroscopy. Microscopic and spectroscopic analyses suggest that rhombohedral-stacking formation is correlated to underlying copper step-bunching.
Article
Materials Science, Multidisciplinary
Jie Wang, Tengfei Fan, Jianchen Lu, Xiaoming Cai, Lei Gao, Jinming Cai
Summary: Graphene with different morphologies, such as dendrites, rectangle, and hexagon, has been grown on polycrystalline copper substrates using low-pressure chemical vapor deposition. The evolution of fractal graphene grown on the copper substrate has also been observed. The study investigates the changes in graphene morphology as a function of the methane to hydrogen volume ratio. Additionally, phenomena of stitching snow-like graphene and stacking graphene with different angles have been observed.
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS
(2022)
Article
Chemistry, Physical
Sami Ullah, Yu Liu, Maria Hasan, Wenwen Zeng, Qitao Shi, Xiaoqin Yang, Lei Fu, Huy Q. Ta, Xueyu Lian, Jingyu Sun, Ruizhi Yang, Lijun Liu, Mark H. Rummeli
Summary: Graphene doping is a promising technology that can enhance graphene properties, improve performance, and expand applications in fields such as hydrogen storage, gas sensors, etc.
Article
Chemistry, Physical
Qingyuan Luo, Ronghuo Yuan, Yan-Ling Hu, Defa Wang
Summary: InxGa1-xN nanowires with core/shell structure grown on n-type Si substrate by Ni-assisted CVD method were studied for their photocatalytic properties. Thicker GaN shell was found to reduce photoactivity, and a strategy to improve performance was proposed.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Arun Kumar, Raimondo Cecchini, Claudia Wiemer, Valentina Mussi, Sara De Simone, Raffaella Calarco, Mario Scuderi, Giuseppe Nicotra, Massimo Longo
Summary: The study demonstrates the self-assembly of core-shell GeTe/Sb2Te3 nanowires on Si (100) and SiO2/Si substrates using metalorganic chemical vapour deposition catalyzed by Au nanoparticles. The obtained nanowires consist of a single crystalline GeTe core and a polycrystalline Sb2Te3 shell, with diameters ranging from 50-130 nm and lengths up to 7 micrometers. The morphology, structure, and composition of the core and core-shell nanowires were analyzed using various techniques such as SEM, XRD, micro-Raman mapping, HRTEM, and EELS.
Article
Materials Science, Multidisciplinary
Minghao Liang, Ling-Xuan Qian, Yuting Hou, Jun Li, Changqing Shen, Fangzhu Qing, Xuesong Li
Summary: Both batch-to-batch (B2B) and roll-to-roll (R2R) processes can be used for mass production of graphene films. R2R process is more industrially preferred due to automation and compatibility with transfer process, but a deeper understanding of growth kinetics is needed.
SCIENCE CHINA-MATERIALS
(2022)
Article
Materials Science, Textiles
Faris Syahiran Ismail, Ainun Zuriyati Mohamed Asa'ari, Nur Aqeela Mohd Yussof, Lee Chin Hao, Farah Nadia Mohammad Padzil, Lee Seng Hua, Luqman Chuah Abdullah, Mohammad Jawaid
Summary: This research investigates the effects of incorporating microcrystalline cellulose (MCC) into beaten oil palm empty fruit bunch (EFB) fibers for papermaking. The addition of MCC decreases the porosity and increases the opacity of the paper. The paper with 6% MCC addition shows the highest mechanical properties, especially in terms of tensile strength. Beating revolution also plays a significant role in influencing the strength of the papers made from EFB fibers with MCC. The produced paper has potential in the manufacturing of writing or high-quality printing grade paper.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Materials Science, Multidisciplinary
Shahril Mohamad, Luqman Chuah Abdullah, Saidatul Shima Jamari, Syeed Saifulazry Osman Al Edrus, Min Min Aung, Sharifah Fathiyah Sy Mohamad
Summary: This study investigates the relationship between the polymorph crystal structure, crystallinity, and thermal properties of wet bacterial cellulose (BC) after dehydration using hot-pressed and freeze-dried methods. The results show that hot-pressed dehydration increases BC crystallinity but reduces thermal stability compared to freeze-dried dehydration.
JOURNAL OF MATERIALS SCIENCE
(2022)
Article
Polymer Science
Siti Hasnah Kamarudin, Marwah Rayung, Falah Abu, So'bah Ahmad, Fatirah Fadil, Azrena Abdul Karim, Mohd Nurazzi Norizan, Norshahida Sarifuddin, Mohd Shaiful Zaidi Mat Desa, Mohd Salahuddin Mohd Basri, Hayati Samsudin, Luqman Chuah Abdullah
Summary: The development of antimicrobial packaging has been rapidly increasing, aiming to preserve the quality and prolong the shelf life of foods and products. By adding antibacterial nanoparticles and environmentally friendly green polymers, antimicrobial packaging not only offers a wide range of advantages, but also reduces plastic pollution.
Article
Environmental Sciences
Hanisah Mohmad Nasir, Sze Yee Wee, Ahmad Zaharin Aris, Luqman Chuah Abdullah, Ismayadi Ismail
Summary: Persistent endocrine-disrupting compounds (EDCs) in bodies of water pose a concern for human health and the environment. Traditional treatment systems fail to completely remove EDCs. Developing new approaches and techniques to remove these micropollutants is crucial. This review discusses common methods to eliminate EDCs, with a focus on the adsorption process as an economical and straightforward option.
Article
Engineering, Environmental
Abel Adekanmi Adeyi, Siti Nurul Ain Md. Jamil, Luqman Chuah Abdullah, Nik Nor Liyana Nik Ibrahim, Mohsen Nourouzi
Summary: This study synthesized a modified polymeric material and investigated its performance in boron adsorption. The results showed that the modified polymer had high adsorption capacity and exhibited good performance at different initial boron concentrations.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Murni Sundang, Nur Sjanrah Nurdin, Sariah Saalah, Yamunah Jaibalah Singam, Syeed SaifulAzry Osman Al Edrus, Noor Maizura Ismail, Coswald Stephen Sipaut, Luqman Chuah Abdullah
Summary: In this study, jatropha-based polyester polyols were synthesized and used to produce waterborne polyurethane. The synthesized polyols had viscosities within the range of commercially available polyols, and the resulting waterborne polyurethane dispersions exhibited good stability and dispersibility.
Article
Engineering, Chemical
Fan Li, Thomas Shean Yaw Choong, Soroush Soltani, Luqman Chuah Abdullah, Siti Nurul Ain Md Jamil, Nurul Nazihah Amerhaider Nuar
Summary: This study investigated the performance of glyphosate removal from aqueous solutions using a Fenton-like system with calcium peroxide as an oxidant. Under optimal conditions, the maximum removal rates of total phosphorus and chemical oxygen demand were 94.50% and 68.60%, respectively. Experimental data were analyzed using various kinetics models, showing that calcium peroxide is an effective oxidant for glyphosate wastewater treatment.
Article
Engineering, Chemical
Zulina Abd Maurad, Luqman Chuah Abdullah, Mohd Shamsul Anuar, Nor Nadiah Abdul Karim Shah, Zainab Idris
Summary: The preparation and behavior of powder stearin-based methyl ester sulfonates (MES) with the addition of builder as a glidant agent was studied. The properties of powder MES were evaluated in terms of morphology, particle size, cohesion, caking, and compaction. The addition of zeolite or soda ash as a glidant improved the caking behavior of powdered MES.
Article
Materials Science, Textiles
Shahril Mohamad, Luqman Chuah Abdullah, Saidatul Shima Jamari, Syeed Saifulazry Osman Al Edrus, Min Min Aung, Sharifah Fathiyah Sy Mohamad
Summary: This study assessed the suitability of freshly cut oil palm frond juice as a medium for bacterial cellulose production, and found that OPF juice is a renewable medium with high content of fermentable sugars and vital nutrients, which leads to high BC yield.
JOURNAL OF NATURAL FIBERS
(2022)
Article
Polymer Science
Fan Li, Thomas Shean Yaw Choong, Luqman Chuah Abdullah, Siti Nurul Ain Md Jamil, Nurul Nazihah Amerhaider Nuar
Summary: Glyphosate and its metabolites are problematic contaminants in water, and an effective technology for their removal is urgently needed. In this study, calcium peroxide nanoparticles were used as an oxidant to remove glyphosate from water, achieving high removal rates.
Article
Chemistry, Analytical
Mohd Azrie Awang, Lee Suan Chua, Luqman Chuah Abdullah
Summary: This study focused on the recovery of quercetrin from the crude extract of Melastoma malabathricum leaves using solid-phase extraction. The optimized process increased the quercetrin content significantly and demonstrated its potential antiradical and antidiabetic activities.
Article
Environmental Sciences
Xiaoju Li, Luqman Chuah Abdullah, Shafreeza Sobri, Mohamad Syazarudin Md Said, Siti Aslina Hussain, Tan Poh Aun, Jinzhao Hu
Summary: This study aims to investigate the long-term variation characteristics of pollutants and meteorological parameters in Chongqing. The results show a U-shaped variation for PM, SO2, and NO2, while O-3 shows an inverted U-shaped seasonal variation. Industrial emissions account for a significant proportion of pollution emissions. PM2.5 has a strong correlation with PM10. PM is negatively correlated with O-3 but positively correlated with other gaseous pollutants. O-3 is only correlated with relative humidity and atmospheric pressure.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Polymer Science
Nurul Nazihah Amerhaider Nuar, Siti Nurul Ain Md Jamil, Thomas Shean Yaw Choong, Intan Diana Mat Azmi, Nor Athirah Abdul Romli, Luqman Chuah Abdullah, Pen-Chi Chiang, Fan Li
Summary: One of the most significant environmental problems in the world is the release of dye wastewater from the dyeing industry. This study focuses on using starch as a stabilizer for synthesizing calcium peroxide nanoparticles (Starch@CPnps) to improve the degradation efficiency of organic dyes. The results show that the potential application of starch as a stabilizer can effectively reduce the particle size and enhance the degradation efficiency of the nanoparticles.
Article
Engineering, Environmental
Xiaoju Li, Luqman Chuah Abdullah, Shafreeza Sobri, Mohamad Syazarudin Md Said, Siti Aslina Hussain, Tan Poh Aun, Jinzhao Hu
Summary: This research investigated the levels and spatio-temporal evolution of criteria pollutants in Chongqing between 2014 and 2020. The results showed significant decreases in PM10, PM2.5, CO, and SO2 concentrations, while O3 concentrations fluctuated. PM and O3 concentrations were highest in winter and summer, respectively. The distribution of air pollution exhibited significant spatial heterogeneity. These findings are important for formulating air pollution control measures and achieving carbon neutrality goals in Chongqing.
JOURNAL OF THE AIR & WASTE MANAGEMENT ASSOCIATION
(2023)
Article
Polymer Science
Norsuhaili Kamairudin, Luqman Chuah Abdullah, Seng Soi Hoong, Dayang Radiah Awang Biak, Hidayah Ariffin
Summary: This study focuses on introducing modified palm oil derivatives-based polyol into the formulation of rigid polyurethane foams (RPUFs) as a renewable material. The modified palm oil derivative, alkanolamide polyol, was successfully prepared and analyzed for its physicochemical properties. RPUFs produced with alkanolamide polyol showed improved physical, mechanical and thermal properties, making them potential candidates for insulation materials in refrigerators or freezers.
