Article
Materials Science, Multidisciplinary
Zhengfei Yu, Linlong Zhang, Yuxiang Han, Shuai Li, Jianglei Hu, Fengwei Shi
Summary: The thick pore walls of ordered mesoporous silica supported HPW materials were prepared without traditional hydrochloric acid, showing higher efficiency and easier recycling compared to traditional materials synthesized in hydrochloric acid solution.
Review
Biochemistry & Molecular Biology
Marta A. Andrade, Luisa M. D. R. S. Martins
Summary: The selective oxidation of styrene under heterogeneous catalyzed conditions using metal catalysts and various supports has been shown to enhance activity and selectivity, with the generation of intermediate reactive species during the reaction. Tert-butyl hydroperoxide and hydrogen peroxide are commonly used oxidants in the studied catalytic systems.
Article
Engineering, Environmental
Zhengfei Yu, Xifeng Chen, Yibo Zhang, Hongyu Tu, Pen Pan, Shuai Li, Yuxiang Han, Minjun Piao, Jianglei Hu, Fengwei Shi, Xia Yang
Summary: In a phosphotungstic acid aqueous solution, HPW/OMS-SO3H with ordered mesoporous structure was successfully prepared via a one-pot co-condensation method, showing promising catalytic activity for biodiesel production. The catalyst exhibited excellent performance due to the synergistic effect between HPW and propylsulfonic acid groups, with a biodiesel yield of 95.3% achieved under optimal conditions. The strong interaction between components also prevented significant performance loss after multiple reuse cycles.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Haifeng Xiong, Abhaya K. Datye, Yong Wang
Summary: This article discusses recent advances in the development of thermally durable single-atom heterogeneous catalysts, describes several important preparation approaches for thermally stable SACs, and discusses the fundamental understanding of the coordination structures of thermally stable single atom prepared by these methods. The catalytic performances of these thermally stable SACs, including their activity and stability, are reviewed. Finally, a perspective of this important and rapidly evolving research field is provided.
ADVANCED MATERIALS
(2021)
Article
Biotechnology & Applied Microbiology
Jeyashelly Andas, Siti Hajar Ekhbal, Tammar Hussein Ali
Summary: This study successfully prepared MCM-41 and modified MCM-41 from silica extracted from rice husk ash, and characterized the materials through various analytical techniques. Ni-MCM-41 showed higher catalytic activity with benzaldehyde as the sole product, while MCM-41 produced benzaldehyde and styrene oxide.
ENVIRONMENTAL TECHNOLOGY & INNOVATION
(2021)
Review
Chemistry, Multidisciplinary
Lifei Lian, Huaiying Zhang, Sai An, Wei Chen, Yu-Fei Song
Summary: POMs, as a class of discrete anionic metal-oxygen clusters with tunable structure, exhibit super strong Bransted acidity, high proton mobility, and thermal stability, making them potential green alternatives to conventional homogeneous acid catalysts. Through design strategies such as functionalized cations, covalent interactions, non-precious metal support, and porous polymer framework, POMs-based heterogeneous catalysts have shown excellent catalytic performance in specific acid-catalyzed reactions.
SCIENCE CHINA-CHEMISTRY
(2021)
Review
Chemistry, Physical
Meiqi Gao, Lili Wang, Yang Yang, Yafei Sun, Xiaorui Zhao, Ying Wan
Summary: The evolution of model catalyst systems has progressed from single-crystal surfaces to two-dimensional and three-dimensional systems, mimicking the properties of nanoparticles in industrial catalysts. Ordered mesoporous carbon (OMC) materials have unique structures that enable Knudsen diffusion, metal dispersion, and metal embedment, and play important roles in catalysis and other applications. This review provides an introduction to the synthesis routes of OMC-supported metal or metal oxide catalysts and systematically summarizes the mass transfer, reactant chemisorption, discrimination of active species, and catalytic reaction mechanism of these catalysts, with a focus on the advantages of catalysis occurring inside mesopores. Understanding these factors helps in controlling catalytic reactions and designing long-lasting industrial catalysts.
Article
Agricultural Engineering
Dulu Brahma, Riu Riu Wary, Jugal Bori, Pranjal Kalita
Summary: A heterogeneous catalyst, MSnPTA, consisting of phosphotungstic acid (PTA) immobilized over SnO2 mesoporous material, was developed for fructose to HMF conversion. The MSnPTA catalyst exhibited large surface area and pore diameter, and its spherical shape with worm like structure facilitated the catalytic reaction. The uniform distribution of PTA over SnO2 resulted in high acidity of the catalyst, leading to high conversion of fructose to HMF. The yield of HMF increased with increasing amount of catalyst and temperature.
BIOMASS & BIOENERGY
(2023)
Article
Chemistry, Physical
Peng Zhang, Xiangyang Mao, Rongli Mi, Lu Wang, Bolun Yang
Summary: An effective and environmentally friendly method was proposed to prepare mesoporous SiO(2)encapsulated phosphotungstic acid (HPW) catalysts for alkylation desulfurization of 3-methylthiophene (3-MT). The characterized results showed that the HPW structure was maintained and there was a strong interaction between HPW and SiO2. The catalysts demonstrated superior activity compared to reported SBA-15 encapsulated HPW catalysts, achieving a 99% conversion of 3-MT.
Article
Chemistry, Inorganic & Nuclear
J. Gabriel Flores, Manuel Diaz-Garcia, Ilich A. Ibarra, Julia Aguilar-Pliego, Manuel Sanchez-Sanchez
Summary: MOF materials have shown promise as heterogeneous catalysts in Fine Chemistry, especially if they have open metal sites and are nanocrystalline. A sustainable methodology was described to obtain nanocrystalline M-MOF-74 materials at room temperature in methanol. Among the tested divalent metals, Co and Cu MOF-74 exhibited high purity and Cu-MOF-74 had the highest benzaldehyde yield in the synthesis process.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Review
Chemistry, Multidisciplinary
James W. M. Crawley, Isla E. Gow, Naomi Lawes, Igor Kowalec, Lara Kabalan, C. Richard A. Catlow, Andrew J. Logsdail, Stuart H. Taylor, Nicholas F. Dummer, Graham J. Hutchings
Summary: The development and application of trimetallic nanoparticles are rapidly accelerating in the field of catalysis, presenting exciting opportunities. Current methods for design, synthesis, analysis, and application of trimetallic nanoparticles have been explored, but challenges in controlling elemental segregation and identifying influential characteristics remain. The multielement composition of trimetallic nanoparticles exhibits beneficial synergy in oxidation, dehydrogenation, and hydrogenation reactions, but further work is needed to maximize productivity. Computational support is crucial for experimental endeavors, and the marriage of simulation and experiment is necessary to advance this field. Clear challenges remain in identifying, making, and applying trimetallic catalysts efficiently, but the outlook is strong.
Article
Nanoscience & Nanotechnology
Shubhashish Shubhashish, Surani Wijenayake, Xueni Huang, Luisa F. Posada, Samantha Joy B. Rubio, Harshul S. Khanna, Destiny Dziengiel, Ali Mansour, Steven L. Suib
Summary: A straightforward synthesis method for highly mesoporous molybdenum oxide has been demonstrated using inverse micelles and molybdenum-oxo cluster formation. The synthesized catalyst is stable, crystalline, and phase pure MoO3, and shows 65 times higher activity than commercial parts. These materials exhibit excellent catalytic performance as solid acids in electrophilic substitution reactions.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Basile Lasne, Paivi Maki-Arvela, Atte Aho, Zuzana Vajglova, Kari Eranen, Narendra Kumar, Julian E. Sanchez-Velandia, Markus Peurla, Cecilia Mondelli, Javier Perez-Ramirez, Dmitry Yu Murzin
Summary: In this study, various heterogeneous micro- and mesoporous, acidic catalysts were examined for the selective synthesis of Florol (R). The results showed that a mildly acidic, microporous H-Beta-300 catalyst with a SiO2/Al2O3 ratio of 300 performed the best, achieving 72% selectivity and 99% conversion at 40 degrees C with a molar ratio of isoprenol to isovaleraldehyde of 1:5. More acidic zeolite catalysts exhibited slightly lower selectivity, while mesoporous catalysts with mild acidity and no strong Bronsted acid sites had the lowest selectivity.
JOURNAL OF CATALYSIS
(2022)
Review
Chemistry, Inorganic & Nuclear
Kefeng Ping, Rohit Bhadoria, Pavel Starkov, Nadezda Kongi
Summary: M-N-C materials are versatile and potential catalysts in organic transformations. This review provides a comprehensive overview of their reactivity, synthesis methods, and discusses the challenges and potential research directions for improving their stability and performance.
COORDINATION CHEMISTRY REVIEWS
(2023)
Article
Chemistry, Physical
Xingyi Lyu, Xun Wu, Yuzi Liu, Wenyu Huang, Byeongdu Lee, Tao Li
Summary: The study systematically investigated two types of core-shell mesoporous silica nanoparticles with a platinum nanocatalyst using various characterization methods. The results showed that coating the platinum catalyst with a nanoporous layer can improve catalyst stability.
Article
Materials Science, Ceramics
Wentao Yang, Guangping Zheng
Summary: High-entropy ceramics (HECs) (Bi0.2Na0.2K0.2La0.2Sr0.2)TiO3 (BNKLST) with a single-phase perovskite structure were successfully prepared by a modified citrate acid method. Compared to (Bi0.5Na0.5)TiO3 (BNT) ceramics, BNKLST HECs exhibit dense nanostructures with improved electrical and dielectric properties at elevated temperatures, making them promising dielectrics for electrical energy storage applications.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Chemistry, Physical
Huibin Zhang, Tingting Liu, Zehao Huang, Junye Cheng, Honghan Wang, Deqing Zhang, Xuewei Ba, Guangping Zheng, Ming Yan, Maosheng Cao
Summary: This research focuses on the synthesis of WS2-carbon fiber composites using a simple hydrothermal method and their application in EMI shielding for electronic devices. The results show that the EMI shielding performance of WS2-CF is significantly improved, especially at S- and C-bands. The composite material achieves an EMI shielding efficiency of 36.0 dB at 2 GHz, which is much better than that of pure carbon fiber.
JOURNAL OF MATERIOMICS
(2022)
Article
Chemistry, Multidisciplinary
Huibin Zhang, Junye Cheng, Honghan Wang, Zehao Huang, Qingbin Zheng, Guangping Zheng, Deqing Zhang, Renchao Che, Maosheng Cao
Summary: VB-Group NbS2 nanosheets prepared through a facile one-step solvothermal method exhibit remarkable electromagnetic wave absorption performance, showing tunable absorbing frequency bands (C-, X-, and Ku-bands) and the ability to adjust performance by changing material contents.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Physical
S. Qiu, G. P. Zheng, Z. B. Jiao
Summary: Alloying plays a crucial role in determining the phase stability and mechanical behavior of medium/high entropy alloys. This study quantitatively investigates the effects of Al, Ti, Mo, and W additions on CoCrNi alloys through first-principles calculations. The results reveal that different alloying elements have varying effects on the stability and structure of the alloy, with the solute strengthening effect decreasing in the order of W > Mo > Ti > Al.
Article
Nanoscience & Nanotechnology
Zhanxin Zhou, Xiuying Yang, Deqing Zhang, Huibin Zhang, Junye Cheng, Yingfei Xiong, Zehao Huang, Honghan Wang, Ping Zhang, Guangping Zheng, Maosheng Cao
Summary: A hybrid material containing VS2/NiO has been developed for electromagnetic wave absorption, with its layered structure facilitating multiple reflections for desirable absorption performance.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Junye Cheng, Huibin Zhang, Honghan Wang, Zehao Huang, Hassan Raza, Chuanxu Hou, Guangping Zheng, Deqing Zhang, Qingbin Zheng, Renchao Che
Summary: This study demonstrates the use of bi-metallic organic frameworks as electromagnetic wave absorbers, achieving broad frequency band and strong absorption capabilities. The rational selection of materials and structure manipulation enhance the performance of electromagnetic wave absorption. This work opens up new possibilities for the development of broadband and strong electromagnetic wave absorbers.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Physics, Condensed Matter
Shujuan Jiang, Guang-ping Zheng
Summary: In this study, a series of Janus XYP2 monolayers with multifunctional properties, including good stability, electronic, mechanical, piezoelectric, and ferromagnetic properties, were predicted based on density functional theory. These materials have potential applications in various fields.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2023)
Article
Engineering, Electrical & Electronic
Zhuo Han, Tian Li, Guangping Zheng
Summary: Heterogeneous structures of lead-free 0.94(Bi0.5Na0.5)TiO3-0.06BaTiO(3) solid-solution thin film and few-layer graphene oxide (GO) were prepared and investigated for their morphology, piezoelectric properties and electrical energy storage performances. It was found that the electrical breakdown strength of the solid-solution thin film was significantly improved due to the presence of covalently bonded GO nanosheets that could counteract the applied electric field. The heterostructures exhibited outstanding electrical energy storage density up to 4.26 J cm(-3) at elevated temperatures (80-120 degrees C). The results demonstrate that developing dielectrics-GO heterostructures is an effective approach to enhance the energy storage density of dielectric capacitors for practical applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Nanoscience & Nanotechnology
Shujuan Jiang, Chang Liu, Pengyu Liu, Huabing Yin, Guang-Ping Zheng
Summary: The effects of carrier doping on the magnetic and electronic properties of 2D Janus TiXO systems were investigated using first-principles calculations. It was found that Janus TiXO possesses tunable magnetic properties, making it a promising material for electronics and spintronics applications.
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
(2023)
Article
Chemistry, Physical
Honghan Wang, Huibin Zhang, Junye Cheng, Tingting Liu, Deqing Zhang, Guangping Zheng, Shangru Zhai, Maosheng Cao
Summary: The addition of biomass-based glucose derived carbon (GDC) on the surface of VB-Group transition metal disulfides (TMDs) VS2 nanomaterials enhances their electromagnetic wave (EMW) absorption performance, increases the effective absorption bandwidth (EAB), and improves environmental stability and electronic parameters. The VS2/GDC hybrids exhibit promising potential as candidate materials for tunable EMW absorbers with enhanced absorption performance and environmental stability.
JOURNAL OF MATERIOMICS
(2023)
Article
Materials Science, Multidisciplinary
Yu Liu, Guangping Zheng
Summary: The dislocation plasticity of TiZr-based hexagonal close-packed (HCP) concentrated solid-solution alloys (CSAs) is investigated using a multiscale simulation approach. The addition of Y and Sc in TiZrHf CSAs significantly enhances dislocation-mediated slip. The multiscale simulation approach accurately predicts the mechanical properties of CSAs and elucidates the deformation mechanisms at atomic scales.
Article
Materials Science, Multidisciplinary
X. F. Gong, Z. H. Gao, L. P. Nie, S. Qiu, Q. Yu, H. Wu, G. P. Zheng, Z. B. Jiao
Summary: This study systematically investigated the effects of 3d, 4d, and 5d transition elements on the phase stability, mechanical properties, and deformation behavior of L12 Co-Ti-based alloys using first-principles calculations. The results showed that certain transition elements tend to occupy specific sites, reducing the structural stability of the alloys. The analysis also revealed that the strengthening of the alloys is attributed to the strong covalent character of the Co-M bonds. The study provides insights into the fundamental understanding of multicomponent L12 compounds and offers guidelines for designing superior Co-based superalloys.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Materials Science, Multidisciplinary
Yu Liu, Guang-Ping Zheng
Summary: In this study, the influences of oxygen interstitials and magnetisms on the phase stability and structural transformation of CoCrFeNi high-entropy alloy (HEA) were investigated using first-principles calculations. It was found that oxygen interstitials tend to form at octahedral sites neighboring with more Cr or less Ni in the face-centered cubic (FCC) CoCrFeNiOx HEA. The HEA prefers FCC over hexagonal close-packed (HCP) phases when the oxygen concentration exceeds a certain value, and this structural transformation may be driven by magnetisms. Moreover, the synergy effects of oxygen interstitials and magnetisms facilitate the structural transformation.
PHILOSOPHICAL MAGAZINE
(2023)
Article
Chemistry, Physical
Shujuan Jiang, Guangping Zheng
Summary: Novel two-dimensional Janus GaOClX (X = F, Br, and I) monolayers with superior energy storage properties are predicted based on first-principles calculations. They possess anisotropic carrier mobility, strong mechanical flexibility, and excellent out-of-plane piezoelectricity, making them potential candidates for dielectric capacitors with high energy storage density. The GaOCl monolayer and Janus GaOClX monolayers have been found to exhibit an ultrahigh energy storage density comparable to that of electrochemical supercapacitors and batteries, surpassing other dielectric materials reported so far.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Chemistry, Physical
Hassan Raza, Junye Cheng, Cong Lin, Soumyadip Majumder, Guangping Zheng, Guohua Chen
Summary: The development of lithium-sulfur (Li-S) batteries with high energy density and cycling stability is hindered by the slow polysulfide conversion and adverse shuttling effects. Therefore, new electrocatalysts are needed to facilitate the practical applications of Li-S batteries. In this study, a single-phase high-entropy stabilized oxide (Ni0.2Co0.2Cu0.2Mg0.2Zn0.2)O is prepared and integrated into the sulfur host, functioning as both the catalytic converter and chemical inhibitor towards the shuttle species. The resulting cathode exhibits significantly improved discharge capacity and cycling stability compared to other cathodes, demonstrating the potential application of high-entropy oxides (HEOs) in enhancing the performance of Li-S batteries.
Article
Engineering, Chemical
Yongxiang Wu, Nguyen Thi Hong Nhung, Deqian Zeng, Nengneng Luo, Akira Otsuki, Gjergj Dodbiba, Toyohisa Fujita
Summary: This study proposed a novel method for synthesizing flower-like vaterite calcium carbonate using nanobubble-containing ethanol and water mixed solution as the solvent and discussed the formation mechanism of vaterite with different shapes. The synthesized vaterite has significant practical interest in the integrated treatment of wastewater contaminated by heavy metals with effective Cd(II) removal, providing a promising field for studying heavy metal and pollutant adsorption in the liquid phase.
ADVANCED POWDER TECHNOLOGY
(2024)
Article
Engineering, Chemical
Jian Gong, Lipo Cheng, Ming Liu, Jie Jiang, Xiaoduo Ou
Summary: This study investigates the effects of particle shape on the collapse of granular columns using the discrete element method. The results show that particle shape has a significant impact on deposition morphology, energy evolution, and mechanical coordination number. Sphericity and angularity are identified as the most important macroscale factors, while roughness has a weaker microscale influence.
ADVANCED POWDER TECHNOLOGY
(2024)
