Article
Chemistry, Physical
Girma W. Woyessa, Jay-ar B. dela Cruz, Mohammad Rameez, Chen-Hsiung Hung
Summary: A novel nanocomposite catalyst has been developed for efficient electrochemical CO2 reduction to CO, achieving high Faradaic efficiency and selectivity, which can be attributed to the intimate interface interaction between materials and higher electrochemically active surface area.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Chemistry, Multidisciplinary
Yanjiao Chen, Xuan Dai, Wenwei Zhang, Tao Wu, Lei Chen, Xinhua Peng
Summary: A mesoporous ternary metal oxide catalyst was prepared using a simple sol-gel method for the carboxylation reaction with excellent selectivity and functional group tolerance. The oxidation state of active copper(i) played a key role in conducting atom economical reactions.
Article
Chemistry, Physical
Yanyan Li, Keyu Chen, Yan Liu, Junhao Ma, Yaozu Liao, Haitao Yang, Jinsheng Cheng, Qin Yue, Kaiping Yuan, Yuan Ren, Yidong Zou, Yonghui Deng
Summary: Benzene derivatives, as a typical family of volatile toxic compounds, are emitted extensively in industrial production and the automobile field, posing a serious threat to human health and the environment. The reliable and convenient detection of low concentration benzene derivatives based on intelligent gas sensors is of great significance for environmental protection.
Article
Nanoscience & Nanotechnology
Tanya Tsoncheva, Consolato Rosmini, Mihail Mihaylov, Jiri Henych, Kristina Chakarova, Nikolay Velinov, Daniela Kovacheva, Zuzana Nemeckova, Martin Kormunda, Radostina Ivanova, Ivanka Spassova, Konstantin Hadjiivanov
Summary: In this study, the effects of the Fe/Ce ratio and the calcination temperature of cerium-iron oxides on Nickel-decorated mesoporous cerium-iron oxide composites were investigated. The research delves into the complex role of the FeCe support in the reaction mechanism.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Fernando J. Rodriguez-Macias, Jose E. Ortiz-Castillo, Erika Lopez-Lara, Alejandro J. Garcia-Cuellar, Jose L. Lopez-Salinas, Cesar A. Garcia-Perez, Orlando Castilleja-Escobedo, Yadira I. Vega-Cantu
Summary: This work presents two synthesis approaches for mesoporous magnesium carbonates that mineralize carbon dioxide, resulting in environmentally friendly carbonate materials without the use of cosolvents. One synthesis method produces nonequilibrium crystal structures with acicular crystals branching bidirectionally, while another method using supercritical carbon dioxide produces a hydrated magnesium carbonate with smaller pores and high surface area, suitable for adsorption and capillary transport, as well as potential use for carbon capture and sequestration.
APPLIED SCIENCES-BASEL
(2021)
Article
Engineering, Electrical & Electronic
Jingjing Yan, Congxiu Guo, Xiangyun Guo, Xili Tong
Summary: In this study, nitrogen-doped mesoporous network-like carbon materials (NMNCs) were obtained using glucose and ammonia as carbon and nitrogen sources, respectively, through a simple hydrothermal and calcination coupling method. NMNC-1000, produced by heat treatment in ammonia atmosphere at 1000 degrees C for 3 h, exhibited an extremely high nitrogen-doped specific surface area and optimal mesoporous structure, resulting in superior electrochemical supercapacitive properties.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Physical
Silvio Dantas, Katie Cychosz Struckhoff, Matthias Thommes, Alexander V. Neimark
Summary: The study introduces a new method for evaluating pore structures in carbon materials, using high-pressure CO2 adsorption isotherms to determine the pore size distribution in both micro- and mesopores. By utilizing Monte Carlo simulations and meso-canonical ensemble methods, capillary condensation transitions in mesopores were successfully predicted, demonstrating the feasibility of the technique in micro-mesoporous carbon materials.
Article
Chemistry, Physical
Juan Du, Aibing Chen, Senlin Hou, Jing Guan
Summary: In this study, carbon nanotubes were successfully modified by a layer of mesoporous carbon shell supported by nickel nanoparticles, resulting in an electrocatalyst with excellent catalytic performance. The as-prepared electrocatalyst exhibited high efficiency and selectivity for the reduction of CO2 to CO in an aqueous electrolyte.
Article
Chemistry, Physical
Wenyan Zhu, Pingping Zheng, Yaoming Shao, Wenqiang Fang, Haifei Wu, Jianxiao Si
Summary: This study successfully synthesized n-type Mg3Sb2-based thermoelectric materials using a novel method and investigated their structure and properties. It was found that the mixed valence of Ni effectively improved the thermoelectric performance, especially by increasing carrier concentrations and reducing lattice thermal conductivity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Bin Li, Xiaoqing Yuan, Lvyin Li, Baitao Li, Xiujun Wang, Keiichi Tomishige
Summary: In the dry reforming of methane reaction, the addition of lanthanide oxides significantly improves the carbon resistance of nickel-based catalysts, with NiLa/SiO2 and NiCe/SiO2 exhibiting better stability and catalytic activity. The presence of lanthanide oxides affects the size of Ni nanoparticles and the activation energy of methane and carbon dioxide dissociation, leading to enhanced carbon resistance and stability in NiLa/SiO2 and NiCe/SiO2 catalysts.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Materials Science, Ceramics
Ivan Shanenkov, Alexander Tsimmerman, Arthur Nassyrbayev, Dmitriy Nikitin, Roman Tabakaev, Aleksandr Sivkov
Summary: This study presents a new method for metal oxide synthesis using CO2 as a gaseous precursor and oxidant based on a pulsed arc discharge plasma. The method allows for the dispersion of metal oxides with high CO2 conversion rate and energy efficiency. The synthesized products can be used to obtain high hardness bulk ceramic materials.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Timothy Zurrer, Kenneth Wong, Jonathan Horlyck, Emma C. Lovell, Joshua Wright, Nicholas M. Bedford, Zhaojun Han, Kang Liang, Jason Scott, Rose Amal
Summary: The study successfully dispersed Ni nanoclusters in the parent MOF using NiMg-MOF-74 as a template, and influenced CO2 adsorption capacity and hydrogenation selectivity by controlling the ratio of Ni to Mg during thermal treatment.
ADVANCED FUNCTIONAL MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Aasif Helal, Syed Shaheen Shah, Muhammad Usman, Mohd Yusuf Khan, Md Abdul Aziz, Mohammad Mizanur Rahman
Summary: MOFs are a novel class of porous crystalline structures that have wide applications in catalysis, CO2 conversion, and energy storage; Nickel is a common element with important roles in catalysis and energy storage; Nickel-based MOFs and their derivatives can be used to improve their performance as catalysts or energy storage materials.
Review
Chemistry, Physical
Hong Zhao, Wai-Yu Ashley Lam, Li Sheng, Li Wang, Peng Bai, Yang Yang, Dongsheng Ren, Hong Xu, Xiangming He
Summary: This review article presents the progress of cobalt-free cathodes made with lithium-rich oxides, nickel-rich layered oxides, and spinel lithium nickel manganese oxide (LNMO). The roles of cobalt are clarified, and the performance and commercialization prospects of these materials are objectively assessed.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Simon Suhr, Nicolai Schroter, Merlin Kleoff, Nicolas Neuman, David Hunger, Robert Walter, Clemens Lucke, Felix Stein, Serhiy Demeshko, Hang Liu, Hans -Ulrich Reissig, Joris van Slageren, Biprajit Sarkar
Summary: Two homoleptic Fe(II) complexes with superbasic terpyridine derivatives as ligands were studied to investigate the relationship between spin state and electrochemical/spectroscopic behavior. Antiferromagnetic coupling between a ligand-centered radical and the high-spin metal center resulted in an anodic shift of the first reduction potential and a mixed valency species with a moderately intense intervalence-charge-transfer band. The different spin states also influenced the electrochemical reactivity, with the low-spin species acting as a precatalyst for electrocatalytic CO2 reduction and showing a Faradaic efficiency of 37% for CO formation, while the high-spin species only catalyzed proton reduction with a modest Faradaic efficiency of approximately 20%.
INORGANIC CHEMISTRY
(2023)