Article
Chemistry, Inorganic & Nuclear
Junjie Zhou, Xu Meng, Jiaying Yan, Xiang Liu
Summary: By catalyzing the hydrolysis of dimethylamine-borane on MoS2 nanosheets, hydrogen evolution can be achieved more efficiently. Co/MoS2 is found to be more efficient in producing hydrogen, utilizing hydrogen atoms in water.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Astronomy & Astrophysics
Harvey Liszt, Maryvonne Gerin
Summary: There is a rich polyatomic chemistry in diffuse interstellar gas that can be studied through absorption at radio/millimeter/submillimeter wavelengths. Using proxies based on HCO+ absorption and CO emission and absorption, this study compares column densities of H-2 and H with previous results obtained by observing UV absorption toward stars. The use of HCO+ as a proxy for H-2 provides consistent results, while CO shows differences between radio and optical regimes. Wide variations in CO brightness and CO-H-2 conversion factor were found, indicating that the standard Galactic values may not apply universally. The gas/reddening ratios in absorption toward stars are lower than the Galactic mean, especially for sightlines without H-2.
ASTROPHYSICAL JOURNAL
(2023)
Article
Chemistry, Physical
Vladislav A. Mints, Jack K. Pedersen, Alexander Bagger, Jonathan Quinson, Andy S. Anker, Kirsten M. O. Jensen, Jan Rossmeisl, Matthias Arenz
Summary: This study explores the composition space of carbon-supported Pt-Ru-Pd-Rh-Au nanoparticles for the H-2/CO oxidation reaction through a surfactant-free synthesis platform. By constructing machine learning models, the relationship between the concentrations of the constituent elements and catalytic activity is analyzed and compared to theoretical calculations. Additionally, a correlation is found between the onset potentials and the adsorption energy of *OH.
Article
Astronomy & Astrophysics
Ping Zhou, Gao-Yuan Zhang, Xin Zhou, Maria Arias, Bon-Chul Koo, Jacco Vink, Zhi-Yu Zhang, Lei Sun, Fu-Jun Du, Hui Zhu, Yang Chen, Stefano Bovino, Yong-Hyun Lee
Summary: By observing molecular emissions from the W49B supernova remnant, researchers found evidence of multiple feedback channels, including perturbations to nearby molecular clouds and impacts on chemical reactions. The presence of high-intensity ratios suggests strong influences from the remnant's shock waves, cosmic rays, and radiation.
ASTROPHYSICAL JOURNAL
(2022)
Article
Chemistry, Physical
Tiantian Wu, Tejs Vegge, Heine Anton Hansen
Summary: CeO2-based catalysts have potential for improving H-2 storage in SOECs, with Bi and Pr co-doping shown to greatly enhance the rate of the water-splitting reaction, facilitating H-2 formation.
JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Physical
Kohei Saito, Yu Hashimoto, Toshiyuki Takayanagi
Summary: In this study, thermal rate coefficients for the reactions between H-3(+) and CO were calculated using a high-level machine-learning potential energy surface. The temperature was found to impact the product branching ratios, and the collision orientation determined the mechanism of formation for the products.
JOURNAL OF PHYSICAL CHEMISTRY A
(2021)
Article
Chemistry, Multidisciplinary
Guohua Qi, Tengfei Yu, Jianmei Li, Zirui Guo, Kongshuo Ma, Yongdong Jin
Summary: A highly efficient and cost-effective imaging-guided/assessed H-2 therapy for tumors is reported, which can eliminate tumor tissue within 1 day. Adequate H-2 is controllably generated in tumor sites through mild electrochemistry in vivo, and nano-/micro-bubbles of H-2 formed in situ can elevate the tumor's internal temperature and burst vessels. This H-2 therapy provides a potentially safe and viable therapeutic strategy for future clinical applications.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Physical
Qiliang Zhu, Lei Zhang, Qian Liu, Zhifan Ke, Changlang Liu, Guangzhi Hu
Summary: In this study, a three-in-one approach was used to fabricate a charge storage media for efficient and membrane-less water electrolysis. The reversible interconversion between divalent and trivalent nickel was verified, and a novel Ni-Zn battery was constructed to enable uninterrupted H2 production and battery discharging without the need for an external power supply.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Energy & Fuels
Pradeep Kumar Yadav, Sudhanshu Sharma
Summary: This study focuses on developing an efficient heterogeneous catalyst by comparing substituted and supported metal oxides. The research finds that the substituted catalyst exhibits higher activity and stability due to the presence of activated oxygen on the surface. The findings have important implications for developing more efficient and effective catalysts.
Article
Engineering, Environmental
Clemens F. Patzschke, Brett Parkinson, Joshua J. Willis, Partha Nandi, Alyssa M. Love, Sumathy Raman, Klaus Hellgardt
Summary: The study investigates the production of CO2-free H2 from natural gas through methane pyrolysis in molten salts, identifying mixed Co-Mn catalysts as highly promising. Increasing the molar Co:Mn ratio from zero to two can enhance CH4 conversion rates. Results show that Co-rich catalysts inhibit interactions between the support and the active phase, leading to stable performance and carbon-free surfaces.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Tomas Gonzalez-Lezana, Pascal Larregaray, Laurent Bonnet
Summary: The dynamics of the Se (D-1)+HD reaction was investigated in the low energy regime using a statistical quantum method and mean potential phase space theory. Statistical predictions for cross sections down to 10(-4) eV and isotope branching ratios were calculated and compared with previous results. Differences between theoretical and experimental branching ratios for the two possible product channels, SD+H and SH+D, were observed.
CHEMICAL PHYSICS LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Xiaoqing Cui, Lijie Zhong, Xu Zhao, Jingxin Xie, Dequan He, Xin Yang, Kanglong Lin, Huan Wang, Li Niu
Summary: The synthesis of NC@CoNPs, a material containing ultrafine CoNPs confined in a nitrogen-doped carbon matrix, was achieved by regulating the topological structure of ZIF-67/ZIF-8 with dopamine. This material exhibited high activity and selectivity for electrocatalytic production of hydrogen peroxide. It also showed great promise for on-site water treatment application through an electro-Fenton process.
CHINESE CHEMICAL LETTERS
(2023)
Article
Astronomy & Astrophysics
D. R. Schmidt, K. R. Gold, A. Sinclair, S. Bergstrom, L. M. Ziurys
Summary: Observations of HCN and HCO+ were conducted towards 13 planetary nebulae (PNe), revealing that at least 30 PNe contain HCN and/or HCO+, indicating the common presence of polyatomic molecules in these objects.
ASTROPHYSICAL JOURNAL
(2022)
Article
Chemistry, Physical
Shidong Li, Jincheng Fan, Guocai Xiao, Shanqiang Gao, Kexin Cui, Zhihao Wang, Chaoqun Niu, Wenbin Luo, Zisheng Chao
Summary: In this study, CoS/MnCo2O4-MnO2 (CMM) nanocomposites were synthesized and their electrochemical properties for supercapacitors and energy-saving H-2 production were investigated. The results showed that CMM exhibited high specific capacitance, good cycling stability, and rate performance as an electrode material for supercapacitors. It also demonstrated outstanding performances in urea oxidation reaction (UOR) and glycol oxidation reaction (MOR) for H-2 production. Therefore, this study highlights the promising practical applications of CMM nanocomposites in energy storage and energy-saving H-2 production.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Applied
Bingyi Jiang, Xiao Hu, Ulf Soderlind, Kristina Goransson, Wennan Zhang, Chunjiang Yu
Summary: This study investigates the metabolic pathways of H-2/CO2 biomethanation under different temperature conditions, identifying the important roles of various microorganisms in the conversion process through 16S rRNA gene analysis. It also reveals the close collaboration between microorganisms and the products generated, providing valuable insights for understanding the mechanism of biomethanation under the background of renewable energy and optimizing this technology.
FUEL PROCESSING TECHNOLOGY
(2022)