Article
Engineering, Electrical & Electronic
Yue Zhao, Rong Liu
Summary: Platinum-copper (Pt-Cu) alloy colloid was successfully prepared and loaded on nitrogen-doped carbon nanotubes using the microwave-assisted polyol reduction method. The catalyst exhibited excellent oxygen reduction reaction (ORR) catalytic activities, especially surpassing the commercial Pt/C catalyst in terms of mass activities. This study provides a simple and effective way to prepare catalyst for fuel cells.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Chemistry, Analytical
R. K. A. Amali, H. N. Lim, I. Ibrahim, Z. Zainal, S. A. A. Ahmad
Summary: The sensor with Fe2O3@Cu-BDC nanocomposite shows excellent electrocatalytic activity for nitrite oxidation, with a wide linear range, high sensitivity, good selectivity, reproducibility, and long-term stability.
Article
Chemistry, Multidisciplinary
David M. Koshy, Sneha A. Akhade, Adam Shugar, Kabir Abiose, Jingwei Shi, Siwei Liang, James S. Oakdale, Stephen E. Weitzner, Joel B. Varley, Eric B. Duoss, Sarah E. Baker, Christopher Hahn, Zhenan Bao, Thomas F. Jaramillo
Summary: Integrating polymer design with catalyst surface science can impact the long-term goals in energy and sustainability by tuning and optimizing electrochemical reactors. Specifically, the role of imidazolium-based ionomers in electrocatalytic CO2 reduction has been studied, showing no effect on CO2R activity but promoting the competing hydrogen evolution reaction. Varying the ionomer structure by changing substituents on the imidazolium ring modulates the promotion of the hydrogen evolution reaction.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Applied
Kun Feng, Hechuang Zheng, Duo Zhang, Guotao Yuan, Lo-Yueh Chang, Yufeng Chen, Jun Zhong
Summary: An ultra-small PtOx nanoparticle with hybrid Pt chemical states on carbon nanotubes is designed as a highly efficient alkaline HER catalyst, showing superior performance and stability due to the favorable design of hybrid chemical states of Pt with carbon nanotubes.
JOURNAL OF ENERGY CHEMISTRY
(2021)
Article
Chemistry, Physical
Merve Ilgar, Guelsen Baytemir, Nevin Tasaltin, Selim Guelluelue, Ibrahim Saffet Yesilyurt, Selcan Karakus
Summary: In this study, novel maca extract-coated CuO nanoparticles were prepared using a green and facile sonication method. The nanoparticles showed promising antimicrobial properties and could be used for dopamine detection.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Antonio Dominguez-Alfaro, Ngoc Do Quyen Chau, Stephen Yan, Donato Mancino, Sushma Pamulapati, Steven Williams, Lauren W. Taylor, Oliver S. Dewey, Matteo Pasquali, Maurizio Prato, Alberto Bianco, Alejandro Criado
Summary: This study describes the covalent modification of carbon nanotube fibers (CNTFs) through electrochemical reduction and oxidation, resulting in diverse surface functionalities while preserving the bulk properties of the fibers.
Article
Biochemistry & Molecular Biology
Vera V. Khrizanforova, Robert R. Fayzullin, Tatiana P. Gerasimova, Mikhail N. Khrizanforov, Almaz A. Zagidullin, Daut R. Islamov, Anton N. Lukoyanov, Yulia H. Budnikova
Summary: The redox properties of monoiminoacenaphthenes (MIANs) were investigated using various electrochemical techniques. The obtained potential values were used to calculate the electrochemical gap and frontier orbital difference energy. The reduction of MIANs at the first peak potential was carried out, yielding two-electron one-proton addition products through controlled potential electrolysis. The structures of three new sodium complexes, three electrochemical reduction products, and one NaBH4 reduction product were determined by single-crystal X-ray diffraction.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Materials Science, Multidisciplinary
Chaozhe Zhang, Hongbiao Li, Jianhua Yu, Jing Sui, Hongzhou Dong, Yingjie Chen, Qian Zhang, Liyan Yu, Lifeng Dong
Summary: This paper presents the in-situ growth of carbon nanotubes on CuO nanowires using chemical vapor deposition method, and investigates the growth mechanisms of CNTs and copper nanoparticles.
Review
Chemistry, Physical
Yukang Zhu, Yanbin Wei, Zhenxing Zhu, Hongjie Yue, Ziying He, Qi Zhang, Shijun Zhang, Fei Wei
Summary: Carbon nanotube (CNT) films are expected to become the next-generation critical engineering mechanical and energy storage materials due to their unique properties. This review focuses on the preparation of CNT films and their emerging applications in mechanical and electrochemical energy storage/conversion. It also discusses the potential utilization and future perspectives for the development of CNT films in both production and application.
Article
Chemistry, Analytical
Jaemun Kim, Sunguk Noh, Jun Ho Shim
Summary: Remarkable progress has been made in fuel cell technology in recent decades, but alternative electrode materials are still needed due to limitations in the use of platinum and other platinum group metals. This study synthesized a Cu/NCD/ACNT hybrid catalyst using activated carbon nanotubes as a support for N-doped carbon dots, which reduced Cu(II) to Cu(0) and showed higher oxygen reduction reaction (ORR) activity and methanol tolerance compared to traditional catalysts. The Cu/NCD/ACNT catalyst also exhibited greater durability in the ORR durability test. Therefore, it is a promising alternative to commercial Pt/C catalysts.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2023)
Article
Chemistry, Analytical
Xiaojun Liu, Xiaoyu Chen, Tongtong Chen, Yong Xu, Xiangqun Zeng
Summary: This study introduced a new method for electrochemical detection of carbon black particles, demonstrating selective detection capabilities compared to insulating oxide particles. By systematically studying collision events at varying concentrations of carbon black, the researchers identified the most suitable bias potential and established a linear relationship between spike numbers and carbon black concentration. The work provides a basis for the development of powerful electroanalytical methods and technologies for detecting and classifying carbon particles in different environmental conditions.
ANALYTICAL CHEMISTRY
(2021)
Review
Chemistry, Analytical
Zhen Song, Yihui Ma, Aoife Morrin, Caifeng Ding, Xiliang Luo
Summary: Porous conducting polymers (PCPs) are unique materials that integrate excellent electrochemical properties with a porous structure, providing larger surface area and higher electrocatalytic activity. They have received increasing attention as sensing materials and are widely applied in electrochemical sensing applications.
TRAC-TRENDS IN ANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Physical
Li Wang, Xiaoping Yue, Qizeng Sun, Linrong Zhang, Guozhang Ren, Gang Lu, Hai-Dong Yu, Wei Huang
Summary: Flexible organic electrochemical transistors (OECTs) have great potential in chemical and biological sensing due to their high sensitivity, biocompatibility, low cost, and light weight. This review summarizes recent progress in the fabrication and applications of flexible OECTs in sensing. Material selection, structural engineering, gate modification, and array-based sensors are discussed, highlighting the versatility and promising applications of OECT sensors.
Article
Polymer Science
Tingting Xu, Huanli Gao, Orlando J. J. Rojas, Hongqi Dai
Summary: In this study, a conductive hydrogel was synthesized using carboxymethyl chitosan and sodium carboxymethyl cellulose as biopolymers, and coupled with conductive polypyrrole through hydrogen bonding. The addition of sodium lignosulfonate facilitated the efficient adsorption and reduction of silver ions, resulting in the embedding of silver nanoparticles in the hydrogel network and improving the electro-catalytic efficiency of the system. The prepared silver nanoparticle-embedded conductive hydrogel electrode showed excellent electro-catalytic activity towards hydroquinone (HQ).
Article
Engineering, Chemical
Thanh Truc Nguyen Hoang, Yu-Shih Lin, Thi Nhu Huynh Le, Tien Khoa Le, Thi Kieu Xuan Huynh, De-Hao Tsai
Summary: A facile approach was demonstrated for the fabrication of Cu-ZnO-based hybrid nanostructures for the catalytic CO2 conversion to methanol. The presence of Al2O3 was found to enhance the performance of the Cu-ZnO nanocatalyst.
ADVANCED POWDER TECHNOLOGY
(2021)
Article
Chemistry, Physical
Jie Sheng, Jingshan He, Dun Ma, Yuanbo Wang, Wu Shao, Tian Ding, Ronghao Cen, Jingwen He, Zhihao Deng, Wenjun Wu
Summary: This study presents an innovative approach to improve the photovoltaic conversion characteristics and stability of perovskite solar cells through carbon electrode interface modification. By in-situ polymerization and carbonization on the surface of nano-graphite, a dendritic structure carbon electrode is formed, reducing the work function and aligning the energy levels with perovskite. This leads to improved charge and hole collection efficiency, resulting in increased photovoltaic conversion efficiency. Furthermore, the modified carbon electrode-based perovskite solar cells exhibit exceptional stability, maintaining high efficiency even without encapsulation.
Article
Chemistry, Physical
Guodong Shi, Jian Song, Xiaoxiao Tian, Tongtong Liu, Zhanjun Wu
Summary: This study demonstrates the improvement of mechanical properties and reduction of coefficient of thermal expansion (CTE) in graphene oxide (GO)/epoxy (EP) nanocomposites by enhancing the interface between GO and EP through functionalization and incorporating rigid-flexible interphases. The results reveal that the SiO2-PEA-GO hybrid exhibits better strengthening and toughening effects, as well as lower CTE, compared to the PEA-GO hybrid due to the presence of rigid-flexible interfaces with higher bonding strength and better energy dissipation mechanisms. Additionally, the nanocomposites with longer polyetheramine (PEA) molecules in the rigid-flexible interphases demonstrate higher strength and toughness, while maintaining a lower CTE. This work provides a promising strategy for constructing adjustable flexible-rigid interfacial structures and offers potential in developing GO/EP nanocomposites with high mechanical properties and low CTE.
Article
Chemistry, Physical
Rafal Janus, Sebastian Jarczewski, Jacek Jagiello, Piotr Natkanski, Mariusz Wadrzyk, Marek Lewandowski, Marek Michalik, Piotr Kustrowski
Summary: In this study, a facile procedure for the synthesis of CMK-1 and CMK-2 carbon replicas was developed. The method utilizes basic laboratory equipment and a renewable carbon source, and operates under mild conditions. The resulting carbon mesostructures exhibit exquisite replication fidelity and structural homogeneity, making them suitable for applications in various fields.
Article
Chemistry, Physical
Anqi Wang, Connor J. MacRobbie, Alex Baranovsky, Jean-Pierre Hickey, John Z. Wen
Summary: In this study, a novel polymer-free nanothermite aerogel with a wide range of nanoparticle loading was fabricated via a new additive manufacturing process. The SEM images showed a unique porous structure formed by extra thin rGO sheets, wrapping individual nanothermite clusters. The DSC-TGA results and high-speed combustion videos confirmed the enhanced energetic performance of the printed specimen.
Article
Chemistry, Physical
Wanze Wu, Misheng Zhao, Shiwei Miao, Xiaoyan Li, Yongzhong Wu, Xiao Gong, Hangxiang Wang
Summary: Superhydrophobic solar-driven interfacial evaporator is an energy-efficient technology for seawater desalination, which is easily fabricated using robust photothermal superhydrophobic coating and substrate. The created bifunctional coating on the melamine sponge substrate shows stable and highly efficient photothermal and superhydrophobic performance for seawater desalination. This superhydrophobic solar-driven interfacial evaporator is expected to have wide applications in seawater desalination.
Article
Chemistry, Physical
Zichen Xiang, Zhi Song, Tiansheng Wang, Menghang Feng, Yijing Zhao, Qitu Zhang, Yi Hou, Lixi Wang
Summary: This study presents a co-electrospinning synthesis strategy to fabricate lightweight and porous Co@C composite nanofibres with wideband microwave attenuation capacity. The addition of MOF-derived Co additives enhances the low-frequency absorption performance.
Article
Chemistry, Physical
J. Snow, C. Olson, E. Torres, K. Shirley, E. Cazalas
Summary: This study investigates the use of a perovskite-based graphene field effect transistor (P-GFET) device for X-ray detection. The sensitivity and responsivity of the device were found to be influenced by factors such as X-ray tube voltage, current, and source-drain voltage. Simulation experiments were conducted to determine the dose rate and energy incident on the device during irradiation.
Article
Chemistry, Physical
Zuzana Jankovska, Lenka Matejova, Jonas Tokarsky, Pavlina Peikertova, Milan Dopita, Karolina Gorzolkova, Dominika Habermannova, Michal Vastyl, Jakub Belik
Summary: This study provides new insights into microwave-assisted pyrolysis of scrap tyres, demonstrating that it can produce microporous carbon black with potential application in xylene adsorption. Compared to conventional pyrolysis, microwave pyrolysis requires less time and energy while maintaining similar adsorption capacity.
Article
Chemistry, Physical
Max Bommert, Bruno Schuler, Carlo A. Pignedoli, Roland Widmer, Oliver Groning
Summary: A detailed understanding of the interaction between molecules and two-dimensional materials is crucial for incorporating functional molecular films into next-generation 2D material-organic hybrid devices. This study compares the energy level alignment of different-sized fullerenes on a Moire superstructure and finds that C-84 fullerenes can be either neutral or negatively charged depending on slight variations of the electrostatic potential. This discovery suggests a new path to achieve ambipolar charge transfer without overcoming the electronic gap of fullerenes.
Article
Chemistry, Physical
Yuanjing Cheng, Xianxian Sun, Ye Yuan, Shuang Yang, Yuanhao Ning, Dan Wang, Weilong Yin, Yibin Li
Summary: The dual-structure aerogel (GS) consisting of flexible silica fibers and graphene honeycomb structures exhibits excellent resilience, flexibility, and reliability. It also shows remarkable wave absorbing performance, making it an ideal candidate for microwave absorption applications such as flexible electronics and aerospace.
Article
Chemistry, Physical
Shuyu Fan, Yinong Chen, Shu Xiao, Kejun Shi, Xinyu Meng, Songsheng Lin, Fenghua Su, Yifan Su, Paul K. Chu
Summary: Graphene coatings are promising solid lubrication materials due to their mechanical properties. This study presents a new method for in situ deposition of high-quality graphene coatings on hard substrates using NiCo solid solution and competitive reaction strategies. The graphene coating deposited on substrates with deep NiCo solid solution demonstrates superior low-friction and durability.
Article
Chemistry, Physical
Mengdi Wang, Sanyin Qu, Yanling Chen, Qin Yao, Lidong Chen
Summary: The improved thermoelectric properties of conducting polymers are achieved by selectively capturing single-walled carbon nanotubes (SWNTs) in a conducting polymer film, leading to increased carrier mobility and reduced thermal conductivity. The resulting composite film exhibits significantly higher electrical conductivity and lower thermal conductivity compared to films with a mixture of SWNTs. This work provides a convenient and efficient method to enhance the thermoelectric properties of conducting polymers.
Review
Chemistry, Physical
Heng Wei, Weihua Li, Kareem Bachagha
Summary: This article reviews the research progress of carbon nanotube-based microwave absorbing materials (MAMs) in recent years, covering the fundamental theory, design strategies, synthesis methods, and future development directions.
Article
Chemistry, Physical
Chenguang Shi, Junlong Huang, Zongheng Cen, Tan Yi, Shaohong Liu, Ruowen Fu
Summary: This study developed a high-performance Li metal host material, which achieved dendrite-free Li deposition with a low nucleation overpotential and high Coulombic efficiencies through the combination of Ti3C2-g-PV4P sheets and Ag nanoparticles. The full cells assembled with the Li@host anode and LiFePO4 cathode exhibited high discharge capacity and excellent cycling stability, demonstrating a perspective design for future energy storage devices.
Article
Chemistry, Physical
Tomotaro Mae, Kentaro Kaneko, Hiroki Sakurai, Suguru Noda
Summary: A new partial prelithiation method for SiO/C-CNT electrodes was developed, which showed reduced irreversible capacity and achieved high energy densities with good reversibility. The method allows for precise control of the degree of prelithiation and is applicable to various chemistries.
