Article
Chemistry, Physical
Shaoyun Chen, Huan Cheng, Du Tian, Qi Li, Min Zhong, Jian Chen, Chenglong Hu, Hongbing Ji
Summary: The study successfully prepared core-shell PPy@PANI nanospheres with excellent electrochemical performance as electrode materials for supercapacitors. The thickness of the PANI shell and the sea urchin-like shape of PANI have important effects on the specific capacitance and performance of the nanospheres.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Jayaraman Kalidass, Thirugnanasambandam Sivasankar
Summary: Mesoporous magnetite (Fe3O4) nanospheres were synthesized quickly using a facile sonoelectrochemical method. The aim of this study was to obtain high yield of active Fe3O4 nanoparticles with tunable structural morphology at reduced cost, energy, and synthesis time without compromising quality. The combination of electrochemical method with ultrasound resulted in higher mass transfer rate and rapid formation of magnetite. The study also investigated the role of additive and stabilizer, as well as the influence of ultrasound amplitude and irradiation time. The prepared magnetite nanoparticles exhibited spherical shape, narrow size distribution (30-80 nm), mesoporous nature, and a surface area of 121.87 m2g-1, with a high saturation magnetization value (65.33 emug-1) indicating near superparamagnetic behavior. Deep characterization techniques confirmed the highly crystalline and stable nature of the magnetite nanoparticles.
MATERIALS CHEMISTRY AND PHYSICS
(2023)
Article
Multidisciplinary Sciences
Yunqing Kang, Ovidiu Cretu, Jun Kikkawa, Koji Kimoto, Hiroki Nara, Asep Sugih Nugraha, Hiroki Kawamoto, Miharu Eguchi, Ting Liao, Ziqi Sun, Toru Asahi, Yusuke Yamauchi
Summary: A one-pot wet-chemical reduction approach is used to synthesize PtPdRhRuCu mesoporous nanospheres with adjustable compositions and exposed porous structures. These nanospheres exhibit robust electrocatalytic hydrogen evolution reaction (HER) activities in alkaline, acidic, and neutral electrolytes. The excellent performance of the PtPdRhRuCu nanospheres is attributed to the synergistic interactions among multiple compositions and the mesoporous structures with excellent mass/electron transportation characteristics.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Yunqing Kang, Ovidiu Cretu, Jun Kikkawa, Koji Kimoto, Hiroki Nara, Asep Sugih Nugraha, Hiroki Kawamoto, Miharu Eguchi, Ting Liao, Ziqi Sun, Toru Asahi, Yusuke Yamauchi
Summary: In this study, core-shell PtPdRhRuCu mesoporous nanospheres (PtPdRhRuCu MMNs) were synthesized using a one-pot wet-chemical reduction approach with a diblock copolymer as the soft template. The PtPdRhRuCu MMNs showed adjustable compositions and exposed porous structures rich in highly entropic alloy sites. Electrochemical characterization revealed robust electrocatalytic hydrogen evolution reaction (HER) activities of the PtPdRhRuCu MMNs in alkaline, acidic, and neutral electrolytes.
NATURE COMMUNICATIONS
(2023)
Article
Chemistry, Applied
Dolores Garrido, Jamal El Haskouri, David Vie, Aurelio Beltran, Jose Vicente Ros-Lis, M. Dolores Marcos, Nicolas Moliner, Pedro Amoros
Summary: In this work, a synthesis strategy for preparing functionalized Sto·ber-type mesoporous particles has been presented. The strategy allows for a high concentration of dispersed heteroelements, while maintaining particle size and sphericity. This method is applicable for the incorporation of various elements, especially first row transition elements.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Shaoxin Deng, Cheng-Xing Cui, Lu Liu, Lingyao Duan, Jichao Wang, Yuping Zhang, Lingbo Qu
Summary: This study presents a facile and controllable one-pot approach for the synthesis of monodisperse amino-functionalized hollow mesoporous silica nanoparticles, with ordered and radially oriented in situ aminofunctionalized mesochannels successfully introduced into the shells of the hollow silica nanoparticles. The structural transformation is easily designed through tailoring the HCl and N-lauroylsarcosine sodium molar ratio and the water content in the sol-gel.
CHINESE CHEMICAL LETTERS
(2021)
Article
Engineering, Environmental
Su Hyun Yang, Gi Dae Park, Jin Koo Kim, Yun Chan Kang
Summary: The control of crystal size and location of cobalt diselenide in hollow mesoporous carbon nanospheres, as well as the phase properties tuning, significantly enhance the performance in the hydrogen evolution reaction.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Multidisciplinary
Yuan Zhang, Juanjian Ru, Yixin Hua, Ping Huang, Jiaojiao Bu, Zhiwei Wang
Summary: A facile and controllable approach to synthesize NiS2 nanospheres for the first time using ChCl-EG DES was demonstrated. The effects of reaction temperature on product phase and microstructure were examined, with high-purity NiS2 obtained at 110 degrees C for 3 h. DES acted as a solvent in the synthesis process, providing a mild reaction environment and reducing the requirements for experimental equipment and conditions.
Article
Nanoscience & Nanotechnology
Shan Zhang, Chao Wang, Xiaoyan Zhang, Hongyin Xia, Bolong Huang, Shaojun Guo, Jing Li, Erkang Wang
Summary: In this study, a novel and facile supramolecular anchoring strategy was developed to embed ruthenium nanoparticles into N-doped mesoporous carbon nanospheres, demonstrating excellent catalytic activity for the hydrogen evolution reaction. The catalytic activity was significantly enhanced by the strong electronic coupling between Ru nanoparticles and N-doped porous carbon, increasing the electron transfer capability and promoting efficient HER performance.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Chemical
Shashikant Shingdilwar, Subrata Dolui, Sanjib Banerjee
Summary: With the increasing levels of CO2 in the atmosphere, there is a growing need for research on CO2 capture materials/processes/techniques. This study presents a facile method for preparing functional mesoporous polymer nanoparticles with high pore volume and surface area, which show excellent performance in CO2 capture.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
Jianing Zhang, Shan Li, Jie Liu, Xuebing Ma
Summary: This study presents a universal strategy for the direct covalent immobilization of structurally different chiral organocatalysts upon hollow mesoporous organic polystyrene nanospheres (HMOPNs) via a one-pot tandem reaction. These supported chiral organocatalysts show excellent catalytic performances in the synthesis of natural products and pharmaceuticals, with high yields (76-96%) and excellent enantioselectivities (93-99% ee). This one-pot immobilization strategy provides a universal way for the low-cost production of chiral molecules.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Multidisciplinary
Ehsan Valiey, Mohammad G. Dekamin
Summary: Novel PMAMOS nanospheres were designed and prepared with controllable morphologies and Bronsted acid catalytic centers through altering precursor addition sequence, solvent, and aging time. The obtained PMAMOSs demonstrated high surface areas and uniform pore sizes, suitable for multi-component reactions.
NANOSCALE ADVANCES
(2021)
Article
Chemistry, Multidisciplinary
Shuai Qi, Yan Li, Zhiyuan Liu, Rui Zhang, Qing Wang, Yongzhao Hou, Yao Qiu, Lijuan Zhang, Guangwu Wen, Dong Wang
Summary: The study presents a facile solvothermal approach combined with post annealing for synthesizing highly uniform ZnMn2O4 hollow nanospheres. The ZnMn2O4 hollow nanospheres exhibit superior lithium storage properties compared to solid counterparts, with ultralong cyclic stability and excellent rate performance.
Article
Engineering, Environmental
Yulong Sun, Song Hao, Yanfeng Pu, Hao Yang, Jianhong Wang, Shuaishuai Zhou, Qian Li, Congzhen Qiao
Summary: In this study, hollow mesoporous zirconia nanospheres with controllable particle sizes were prepared and tested for the adsorption of malachite green and methylene blue. The adsorption process was well explained by the pseudo-second-order kinetic model and Langmuir isotherm model. The adsorption mechanism mainly included electrostatic interaction, hydrogen bonding, and 7C-7C interaction.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Fangchao Cheng, Panpan Zhao, Tulong Ouyang, Jianping Sun, Yiqiang Wu
Summary: A comprehensive utilization strategy of cellulose is implemented by facile, high-yield, controllable CNC preparation and effective enzymatic hydrolysis of the cellulosic residue. The CNC produced has a high yield and crystallinity, with tunable dimensions and crystal structure, leading to a comprehensive cellulose utilization rate of more than 95%. This strategy provides a candidate approach for the synchronous production of advanced high-performance materials and fine chemicals from cellulose.
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.