Article
Chemistry, Multidisciplinary
Jie Zhou, Manna Huang, Yaowen Liang, Yiqian Wan
Summary: The novel organoselenium catalytic system developed allows for the direct construction of spiroepoxy chroman-4-ones with broad functionality tolerance under mild reaction conditions. The use of aqueous tert-butyl hydroperoxide instead of organic solvents makes it greener and safer, particularly for industrial applications. The discovery of this synergetic organoselenium catalytic system benefits new research on visible light-promoted radical cyclization and catalytic epoxidation with peroxidation.
Article
Chemistry, Physical
Lingxin Peng, Han Tian, Xiangzhi Cui, Liang Su, Ge Meng, Zhonghua Ma, Shaowen Cao, Jianlin Shi
Summary: The Pd-WO2.72-L composite, synthesized by a photo-reduction method, exhibits outstanding HOR activity and anti-CO poisoning performance in 0.5 M H2SO4, with significantly higher catalytic activity and stability compared to traditional Pt/C catalysts.
Article
Engineering, Environmental
Xiaogang Liao, Lin Zheng, Qi He, Gang Li, Li Zheng, Hongmei Li, Tian Tian
Summary: The Ag/TiO2 monolithic membrane catalyst showed excellent catalytic performance and high stability in 4-NP degradation, maintaining degradation rates above 73% after six consecutive recycling runs. This promising material is highly active and easy to recover, making it a potential candidate for 4-NP degradation.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Chemistry, Multidisciplinary
Yanlin Yu, Yuzhu Gong, Binbin Cao, Haidong Liu, Xiaoli Zhang, Xu Han, Shuanglong Lu, Xueqin Cao, Hongwei Gu
Summary: A one-pot method was used to prepare palladium complexed with azo porous organic polymer nanospheres, which exhibited high catalytic activity and cycling stability in both 4-nitrophenol reduction and Suzuki-Miyaura coupling reactions. The unique structure of the material promoted the formation of a uniform active center and improved electron transfer, resulting in efficient catalysis and high yields in the reactions.
CHEMISTRY-AN ASIAN JOURNAL
(2021)
Article
Multidisciplinary Sciences
Rahman Hosseinzadeh, Mohammad Mavvaji, Iman Moradi
Summary: In this study, a magnetic nanocomposite Fe3O4@SiO2@MgAl-LDH@Au.Pd was synthesized and characterized, which was used for the reduction of 4-nitrophenol and preparation of biphenyl derivatives. The nanocomposite was analyzed by various techniques. The reduction reaction of 4-nitrophenol to 4-aminophenol was monitored and the nanocomposite showed good catalytic activity. The nanocomposite was also used in Suzuki coupling reaction to produce biphenyl products.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Physical
Gongshu Wang, Zhuang Hu, Zhangpei Chen, Jiwei Wang, Jianshe Hu, Xiaoxu Xu
Summary: Developing efficient and recoverable palladium catalysts is important. In this study, nitrogen-doped macroporous chitosan carbon microspheres (MCM) were prepared using emulsion polymerization, and core-shell structured MCM@Pd@COF catalysts were developed. These catalysts efficiently catalyzed Suzuki coupling reactions and the reduction of 4-nitrophenol, and showed high stability and photocatalytic properties under visible light irradiation. Mechanistic investigation revealed the efficient production of radical species under visible light, driving the photocatalytic degradation of organic dyes. The catalytic activity of MCM@Pd@COF remained unchanged after multiple uses.
APPLIED SURFACE SCIENCE
(2023)
Article
Polymer Science
Xikun Zhang, Xue Lv, Ting Xie, Yanwen Cheng, Jiajia Zhang, Xiaoyan Xu
Summary: In this study, a new hydrogel structure was synthesized with improved mechanical properties. The hydrogel displayed high tensile strength and toughness, making it suitable as a template for stable silver nanoparticles and a catalyst for reduction reactions. The composite hydrogel exhibited fast catalysis, high efficiency, stable cycling, and adjustable catalytic activity, which could be significant in the wastewater treatment industry.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Nanoscience & Nanotechnology
Ning Zhang, Yuan Qiu, Hongyu Sun, Jufang Hao, Jun Chen, Jiangbo Xi, Jin Liu, Baojiang He, Zheng-Wu Bai
Summary: By developing a substrate-assisted encapsulation strategy, a highly efficient bimetallic catalyst was successfully prepared, exhibiting excellent catalytic performance in the hydrogenation of nitroarenes and azo dyes.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Yahao Dong, Zhangquan Zhou, Yanan Wang, Xinjuan Li, Tao Li, Yihang Ren, Wendi Hu, Linbo Zhang, Xinhui Zhang, Chunyan Wei
Summary: In this study, a new hypercrosslinked polymer supported palladium catalyst was synthesized and characterized. The catalyst exhibited high efficiency in the preparation of biphenyl compounds with low catalyst loading. It also showed advantages in terms of availability of raw materials, stability, and cost-effectiveness.
JOURNAL OF MOLECULAR LIQUIDS
(2022)
Article
Chemistry, Applied
Mostafa Koolivand, Mohsen Nikoorazm, Arash Ghorbani-Choghamarani, Bahman Tahmasbi
Summary: By utilizing citric acid, a chelating agent with three carboxylic groups, Cu-CA-MOF was prepared and characterized. The MOF exhibited acceptable BET surface area and geometric polyhedral shapes in various analyses, and displayed catalytic activity in Suzuki-Miyaura cross-coupling and chemoselective oxidation reactions.
APPLIED ORGANOMETALLIC CHEMISTRY
(2021)
Article
Green & Sustainable Science & Technology
Shadpour Mallakpour, Zohreh Amini
Summary: This research focuses on the green synthesis of a silver nanoparticle-based nano-catalyst for reducing 4-nitrophenol pollutants. The use of natural extract of green tea instead of chemical reductant is explored. Layered double hydroxides (LDHs) and chitosan (CS) are used to enhance catalytic activity and reusability of the nano-catalyst. The prepared CS/Ag-LDH NC film shows high efficiency in reducing 4-nitrophenol.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Multidisciplinary
Min Gao, Yanshu Luo, Qianlan Xu, Yukun Zhao, Xiangnan Gong, Yuanzhi Xia, Lin Hu
Summary: The research achieved a unified catalytic asymmetric (N+1) (N=4, 5) annulation reaction of oxindoles with bifunctional peroxides using a chiral phase-transfer catalyst (PTC). This method provides a distinct way to access valuable chiral spirooxindole-tetrahydrofurans and -tetrahydropyrans with good yields and high enantioselectivities under mild conditions. The DFT calculations were performed to rationalize the high enantioselectivity observed in the reaction.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Chemistry, Multidisciplinary
Huai-Qing Yang, Qian-Qian Chen, Fulai Liu, Rui Shi, Yong Chen
Summary: Monodispersed palladium phosphide (Pd3P) was successfully utilized in the photocatalytic Suzuki coupling reaction under visible light irradiation, with CdS nanoflake acting as a photosensitizer. The heterogeneous system demonstrated high yields of products and excellent stability in alcohol solvent at room temperature.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Physical
Murugavelu Marimuthu, Huanhuan Li, Quangsheng Chen
Summary: A facile ultrasonically driven Silver based bimetallic nanoparticles (BNPs) were synthesized in high yield by chemical reduction technique and showed excellent catalytic efficiency. The AgPd BNPs exhibited the highest catalytic efficiency, attributed to the synergistic effects of high surface area, porous and hollow structures.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
Peicheng Jiang, Wenyuan Guo, Jin Peng, Wei Peng, Huiyong Li, Chang Peng, Shu Chen
Summary: Researchers prepared a novel transition metal carbidessupported bimetallic Ag/Cu nanoparticles composite (Ag/Cu/MXene) catalyst by one-pot reduction method. The MXene carrier effectively promoted the riping and immobilization of bimetallic Ag/Cu nanoparticles. The composite catalyst showed high catalytic activity for the reduction of 4-nitrophenol (4-NP) due to improved electron transfer capacity, with a turnover frequency (TOF) of 1127.2 h-1.
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.