Article
Environmental Sciences
Sajad Mobini, Mehran Rezaei, Fereshteh Meshkani
Summary: Co-Fe, Cu-Cr, and Co-Mn mixed oxide catalysts were prepared using a one-pot hard template synthesis method, and their catalytic performance significantly improved after rearrangement of the template, with increased specific surface area and reducibility. The CoMn catalyst showed the most promising catalytic performance with a reduced 100% conversion temperature. However, the presence of water vapor was found to decrease the activity and stability of the catalyst, with a calculated activation energy of 59.5 kJ/mol for the Co-Mn catalyst, confirming the MVK mechanism as the most probable reaction mechanism.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Chemistry, Multidisciplinary
Shuhua Song, Jian Liang, Wei Xiao, Dong Gu
Summary: An enhanced CO oxidation activity was demonstrated by a defect-rich mesoporous Co3O4 prepared using a dual-template method. The catalyst exhibited high catalytic activity for low-temperature CO oxidation, with a surface area of 169 m2/g. The high surface area promoted the lattice oxygen mobility, while Co2+ species and active oxygen species were crucial for the catalytic activity.
CHINESE CHEMICAL LETTERS
(2023)
Article
Chemistry, Physical
Zhongnan Gao, Dongyue Zhao, Qingpeng Cheng, Dejian Zhao, Yuexi Yang, Ye Tian, Tong Ding, Song Song, Lihong Guo, Xingang Li
Summary: The mesoporous SiO2-encapsulated nano-Co3O4 catalyst, with unique pitaya-like structure, exhibits high CO oxidation activity and thermal stability. It can be effectively regenerated, improves cobalt resources utilization efficiency, and is suitable for practical applications.
Article
Nanoscience & Nanotechnology
Young Jin Sa, Sohee Kim, Yesol Lee, Ji Man Kim, Sang Hoon Joo
Summary: In this study, four different mesoporous manganese oxides were synthesized and used as model catalysts to investigate the effects of local structures and Mn valence states on the activity of oxygen electrocatalysis. The results showed that for the oxygen reduction reaction, m-Mn2O3 exhibited the highest activity, followed by m-MnO2, m-MnO, and m-Mn3O4. For the oxygen evolution reaction, m-MnO2 showed the highest activity, followed by m-Mn2O3, while m-MnO and m-Mn3O4 had lower activity. These findings suggest that high-valent Mn species and disordered atomic arrangements induced by nanostructuring significantly affect electrocatalysis.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Vassiliki Daikopoulou, Euaggelia Skliri, Eirini D. Koutsouroubi, Gerasimos S. Armatas, Ioannis N. Lykakis
Summary: This study reports the synthesis and catalytic application of mesoporous Au-loaded Mn3O4 nanoparticle assemblies with different Au contents for the selective oxidation of anilines into nitroarenes. The results show that Au/Mn3O4 MNAs containing 0.5 wt % Au exhibit the best catalytic performance among different catalysts, leading to high yields and selectivity of the corresponding nitroarenes.
Article
Chemistry, Multidisciplinary
Hao Lv, Ben Liu
Summary: This Perspective presents recent progress in the synthesis and electrocatalytic applications of two-dimensional mesoporous metals. The article discusses four main strategies for synthesizing these metals and summarizes their add-in structural functions in enhancing electrochemical activity, stability, and selectivity. Current challenges and future directions in this field are also discussed.
Article
Chemistry, Inorganic & Nuclear
Yun-Wu Li, Shi-Kun Su, Cai-Zhen Yue, Jun Shu, Peng-Fang Zhang, Fang-Hui Du, Su-Na Wang, Hui-Yan Ma, Jie Yin, Xin Shao
Summary: The study designed a hierarchical Fe3O4@MnOx nano-composite with improved electrocatalytic performance and overall water splitting efficiency by introducing a pH-regulated redox reaction.
DALTON TRANSACTIONS
(2021)
Article
Energy & Fuels
Haijian Qin, Zelong Yang, Qing Xia, Peifei Yao, Chunzhi Zheng, Guangpin Lin, Zhaolian Ye, Songjian Zhao, Fengli Yang
Summary: Tantalum has been introduced as a novel carrier for CO conversion to improve the catalytic activity of Co. In this study, Co3O4 was loaded on four different forms of tantalum support, and Co/Ta-cm showed the highest CO conversion rate. The characterization results indicated that Co/Ta-cm had excellent crystallinity and stability, and X-ray photon spectroscopy and in-situ diffuse reflectance infrared Fourier transform spectroscopy revealed that Co3+ and lattice oxygen played crucial roles in CO oxidation.
Article
Chemistry, Physical
Yibing Liu, Debo Zheng, Ying Zhao, Pei Shen, Yingxue Du, Weiping Xiao, Yunmei Du, Yunlei Fu, Zexing Wu, Lei Wang
Summary: In this study, Ru-doped 3D porous Ni3N spheres were synthesized as urea oxide electrocatalyst. The catalyst exhibited good bifunctional catalytic performance for hydrogen evolution and oxygen evolution reactions with low overpotentials. It also showed good electrocatalytic performance in neutral and alkaline seawater electrolytes. Furthermore, the catalyst demonstrated extraordinary catalytic activity and stability toward urea oxide. It can be powered by sustainable energy sources such as wind, solar, and thermal energies.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Shiyi Yao, Songtao Zhang, Guangxun Zhang, Yijian Tang, Rongmei Zhu, Yi Peng, Yong Chen, Huan Pang
Summary: This study reports a method for preparing ultrathin mesoporous iron family element molybdenum disulfide, which shows excellent performance as an electrode material for supercapacitors. The material exhibits different performances at different concentration ratios, with CoxMo1-xS2/C-2 having the optimal specific capacitance.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Inorganic & Nuclear
Xuwen Guo, Zhichao Chen, Yanping Huang, Hao Lv, Yaru Wang, Lizhi Sun, Kai Song, Ben Liu
Summary: Ternary noble metal-metalloid-nonmetal PdBS alloy mesoporous nanospheres with three-dimensional central-radial pore channels were prepared via precise control in reduction and nucleation growth, showing remarkably improved electrocatalytic performance. This finding extends knowledge on the rational design and targeted synthesis of novel noble metal-metalloid-nonmetal alloys for catalysis and other applications.
INORGANIC CHEMISTRY
(2021)
Review
Polymer Science
Mark Robertson, Moustafa M. Zagho, Sergei Nazarenko, Zhe Qiang
Summary: This review focuses on the progress and opportunities of self-assembled polymers in the synthesis of mesoporous carbons (MCs), discussing the established methods for converting nanostructured polymers to MCs and the engineering methods for controlling the pore size and morphology of MCs. The review also includes strategies for functionalizing these materials and a brief perspective on emerging research opportunities in this field.
JOURNAL OF POLYMER SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Ajay Munde, Balaji B. Mulik, Raviraj P. Dighole, Bhaskar R. Sathe
Summary: This study developed novel nanoelectrodes that are highly energetic and low-cost, which are important for examining interfacial electron transfer reactions. The researchers demonstrated a bifunctional electrocatalyst with oxophilic character and promoting the role of p-electrons of Bi, supported with Co (nanoalloy), and decoration on reduced graphene oxide. The Co-Bi@rGO composite showed auspicious electrochemical activity towards formaldehyde and urea oxidation reactions, with exceptionally higher activity and stability. The findings provide practical information for the development of stable and efficient direct formaldehyde and urea fuel cells and wastewater treatment.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Han Tian, Xu Yu, Weimin Huang, Ziwei Chang, Fenglai Pei, Jiangdong Zhou, Ningning Dai, Ge Meng, Chang Chen, Xiangzhi Cui, Jianlin Shi
Summary: The development of highly active anode catalysts with excellent CO tolerance is crucial for the commercialization of proton exchange membrane fuel cells (PEMFCs). In this study, a CO-tolerant catalyst (Pd-WO3/C) was successfully synthesized by loading Pd nanoparticles on WO3 using an immersion-reduction route. The optimized 3Pd-WO3/C catalyst showed remarkably high power density and quick recovery after CO-contamination removal, surpassing the performance of Pt/C or Pd/C catalysts. The enhanced HOR activity and CO tolerance of 3Pd-WO3/C can be attributed to the optimized interfacial electron interaction and a novel synergetic catalytic mechanism.
Article
Energy & Fuels
Shuang Li, Li-Li Yu, Wei-ling Xu, Rong-bing Li, Jun-Jie Zhu, Jun Fan, Jing-Tai Zhao
Summary: Porous manganese dioxide nanoflowers were successfully prepared via a template-free method at room temperature, with a specific surface area exceeding 300 m(2) g(-1). The formation and particle sizes of the nanoflowers were found to be influenced by the nucleation concentration in the initial reaction. Additionally, samples with an average particle size of 60-80 nm, high specific surface areas, and pore volume exhibited the best electrochemical performance, with a high specific capacitance of 245 F g(-1) and excellent cycling stability.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Materials Science, Multidisciplinary
Mouni Roy, Sourav Ghosh, Milan Kanti Naskar
MATERIALS CHEMISTRY AND PHYSICS
(2015)
Article
Chemistry, Physical
Mouni Roy, Sourav Ghosh, Milan Kanti Naskar
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2015)
Article
Chemistry, Physical
Mouni Roy, Milan Kanti Naskar
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2016)
Article
Nanoscience & Nanotechnology
Manoj Raula, Md. Harunar Rashid, Sima Lai, Mouni Roy, Tarun K. Mandal
ACS APPLIED MATERIALS & INTERFACES
(2012)
Article
Chemistry, Multidisciplinary
Sourav Ghosh, Mouni Roy, Milan Kanti Naskar
CRYSTAL GROWTH & DESIGN
(2014)
Article
Chemistry, Inorganic & Nuclear
Mouni Roy, Sourav Ghosh, Milan Kanti Naskar
DALTON TRANSACTIONS
(2014)
Article
Materials Science, Ceramics
Ipsita Hazra Chowdhury, Sourav Ghosh, Mouni Roy, Milan Kanti Naskar
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2015)
Article
Materials Science, Multidisciplinary
Sourav Ghosh, Mouni Roy, Milan Kanti Naskar
Article
Chemistry, Physical
Mrinmoy Biswas, Enakshi Dinda, Tapas K. Paira, Mouni Roy, Tarun K. Mandal
Article
Chemistry, Multidisciplinary
I. Hazra Chowdhury, M. Roy, S. Kundu, M. K. Naskar
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2019)
Review
Chemistry, Physical
Ipsita Som, Mouni Roy, Rajnarayan Saha
Article
Engineering, Environmental
Sucharita Chakraborty, Mouni Roy, Rajnarayan Saha
WATER SCIENCE AND TECHNOLOGY
(2020)
Review
Chemistry, Physical
Ipsita Som, Mouni Roy
Summary: This article summarizes the fundamental aspects, structural and compositional engineering of TiO2-based photocatalysts for efficient photocatalytic CO2 reduction. It also provides a detailed study on the factors influencing the efficiency and selectivity of CO2 photoreduction reactions and offers an overview of the photocatalytic CO2 reduction mechanism supported by computational studies. Furthermore, it discusses the potential modification approaches and opportunities in this vital area of research.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Water Resources
Ipsita Som, Sourav Suman, Mouni Roy, Srimanta Gupta, Rajnarayan Saha
Summary: Recent research has shown that nano zerovalent iron (nZVI) particles are highly effective in removing phosphates from groundwater and surface water. This study characterized nZVI and explored the factors affecting its ability to remove phosphate from synthetic water. The study also demonstrated the stability and effectiveness of nZVI in removing phosphate from sewage water.
WATER QUALITY RESEARCH JOURNAL
(2022)
Article
Chemistry, Physical
Sergey Yu. Ketkov, Sheng-Yuan Tzeng, Elena A. Rychagova, Anton N. Lukoyanov, Wen-Bih Tzeng
Summary: Metallocenes, including methylcobaltocene, play important roles in various fields of chemistry. The ionization energy and vibrational structure of (Cp ')(Cp)Co can be influenced by introducing methyl substituents. The mass-analyzed threshold ionization spectrum and DFT calculations provide accurate information about the properties and transformations of (Cp ')(Cp)Co.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Review
Chemistry, Physical
Qifeng Mu, Jian Hu
Summary: Polymer mechanochemistry has experienced a renaissance due to the rapid development of mechanophores and principles governing mechanochemical transduction or material strengthening. It has not only provided fundamental guidelines for converting mechanical energy into chemical output, but also found applications in engineering and smart devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Da Hye Yang, Francesco Ricci, Fredrik L. Nordstrom, Na Li
Summary: Through systematic evaluation of the oiling-out behavior of procaine, we identified both stable and metastable liquid-liquid phase separation, and established phase diagrams to assist in rational selection of crystallization strategies.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Vikki Anand Varma, Simmie Jaglan, Mohd Yasir Khan, Sujin B. Babu
Summary: Designing engineering structures like nanocages, shells, and containers through self-assembly of colloids is a challenging problem. This work proposes a simple model for the subunit, which leads to the formation of monodispersed spherical cages or containers. The model with only one control parameter can be used to design cages with the desired radius.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Hainan Jiang, Yaolong He, Xiaolin Li, Zhiyao Jin, Huijie Yu, Dawei Li
Summary: The cycling lifespan and coulombic efficiency of lithium-ion batteries are crucial for high C-rate applications. The Li-ion concentration plays a crucial role in determining the mechanical integrity and structural stability of electrodes. This study focuses on graphite as the working electrode and establishes an experimental system to investigate the mechanical properties of composite graphite electrode at different C-rates. Considering the effect of Li-ion concentration in stress analysis is found to be significant.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Zhiye Wang, Yunchuan Li, Mingjun Sun
Summary: This study investigates the influence of intramolecular pi-pi interactions on the electronic transport capabilities of molecules. By designing and analyzing three pi-conjugated molecules, the researchers observe that different pi-conjugated structures have varying effects on electron transport. The findings provide a theoretical foundation for designing single-molecule electronic devices with multiple electron channels based on intramolecular pi-pi interactions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Yuandong Xu, Haoyang Feng, Chaoyang Dong, Yuqing Yang, Meng Zhou, Yajun Wei, Hui Guo, Yaqing Wei, Jishan Su, Yingying Ben, Xia Zhang
Summary: Hollow MoS2 cubes and spheres were successfully synthesized using a one-step hydrothermal method with the hard template method. The hollow MoS2 cubes exhibited higher specific capacitance and energy density compared to the hollow MoS2 spheres. The symmetrical supercapacitors assembled with these hollow structures showed good performance and high capacity retention after multiple cycles. These findings suggest that controlling the pore structure and surface characteristics of MoS2 is crucial for enhancing its electrochemical properties.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Ainhoa Oliden-Sanchez, Rebeca Sola-Llano, Joaquin Perez-Pariente, Luis Gomez-Hortiguela, Virginia Martinez-Martinez
Summary: The combination of photoactive molecules and inorganic structures is important for the development of advanced materials in optics. In this study, bulky dyes were successfully encapsulated in a zeolitic framework, resulting in emission throughout the visible spectrum.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Miaomiao Zhang, Cunyuan Pei, Qiqi Xiang, Lintao Liu, Zhongxu Dai, Huijuan Ma, Shibing Ni
Summary: The design of a solid electrolyte interphase (SEI) plays a crucial role in improving the electrochemical performance of anode materials. In this study, lithium difluoro(oxalate)borate (LiDFOB) is used as an electrolyte additive to form a protective SEI film on Li3VO4 (LVO) anodes. The addition of LiDFOB results in a dense, uniform, stable, and LiF-richer SEI, which enhances the Li-ion storage kinetics. The generated SEI also prevents further decomposition of the electrolyte and maintains the morphology of LVO anodes during charge/discharge processes. This work demonstrates the effectiveness of LiDFOB as a multi-functional additive for LiPF6 electrolytes and provides insights into SEI construction for high-performance LVO anodes.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
B. V. Andryushechkin, T. V. Pavlova, V. M. Shevlyuga
Summary: The atomic structure of the Ag(111)-p(4 x 4)-O phase was reexamined and two phases with the same periodicity were discovered. It was demonstrated that the accepted Ag6 model is incompatible with high-resolution oxygen-sensitive STM images.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
S. L. Romo-Avila, D. Marquez-Ruiz, R. A. Guirado-Lopez
Summary: In this study, we used density functional theory (DFT) calculations to investigate the interaction between model graphene oxide (GO) nanostructures and chlorine monoxide ClO. We aimed to understand the role of this highly oxidizing species in breaking C-C bonds and forming significant holes on GO sheets. Our results showed that C-C bonds in a single graphene oxide sheet can be broken through a simple mechanism involving the dissociation of two chemically attached ClO molecules. The formation of carbonyl groups and holes on the GO surface was also observed. This study provides important insights into the degradation of carbon nanotubes and the stability of GO during the myeloperoxidase (MPO) catalytic cycle.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Alberto Garcia-Fernandez, Birgit Kammlander, Stefania Riva, Hakan Rensmo, Ute B. Cappel
Summary: In this study, the X-ray stability of five different lead halide perovskite compositions (MAPbI3, MAPbCl3, MAPbBr3, FAPbBr3, CsPbBr3) was investigated using photoelectron spectroscopy. Different degradation mechanisms and resistance to X-ray were observed depending on the crystal composition. Overall, perovskite compositions based on the MA+ cation were found to be less stable than those based on FA+ or Cs+. Metallic lead formation was most easily observed in the chloride perovskite, followed by bromide, and very little in MAPbI3. Multiple degradation processes were identified for the bromide compositions, including ion migration, formation of volatile and solid products, as well as metallic lead. CsBr was formed as a solid degradation product on the surface of CsPbBr3.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Timofei Rostilov, Vadim Ziborov, Alexander Dolgoborodov, Mikhail Kuskov
Summary: The shock-loading behavior of nanomaterials is investigated in this study. It is found that shock compaction waves exhibit a distinct two-step structure, with the formation of faster precursor waves that travel ahead of the main compaction waves. The complexity of the shock Hugoniot curve of the tested nanomaterial is described, and the effect of initial porosity on the compressed states is demonstrated.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Sergey S. Nikitin, Alexander D. Koryakov, Elizaveta A. Antipinskaya, Alexey A. Markov, Mikhail V. Patrakeev
Summary: The stability of La1/3Sr2/3Fe1-xMnxO3-delta, a perovskite-type oxide, under reducing conditions is dependent on the manganese content. Increasing the manganese content leads to a decrease in stability. The behavior of iron and manganese in the oxide shows distinct differences, which can be attributed to the difference in the enthalpy of oxidation reactions. Additionally, the change in the La/Sr ratio affects the concentration of iron and manganese ions.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
Article
Chemistry, Physical
Mosayeb Naseri, Shirin Amirian, Mehrdad Faraji, Mohammad Abdur Rashid, Maicon Pierre Lourenco, Venkataraman Thangadurai, D. R. Salahub
Summary: Inspired by the successful transfer of freestanding ultrathin films of SrTiO3 and BiFeO3, this study assessed the structural stability and investigated the electronic, optical, and thermoelectric properties of a group of two-dimensional perovskite-type materials called perovskenes. The findings revealed that these materials are wide bandgap semiconductors with potential application in UV shielding. Moreover, they exhibit better electrical and thermal conductivity at high temperatures, enabling efficient power generation in thermoelectric devices.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2024)
