Article
Chemistry, Physical
Lan-Hee Yang, Kyeong Eun Park, Sungho Yoon
Summary: Efforts are being made to improve the hydrophilicity of polydimethylsiloxane (PDMS), by synthesizing bis(propane-1,2-diol)-terminated PDMS (G-PDMS-G) to enhance the hydrophilicity and reactivity of hydroxyl PDMS. This study shows that G-PDMS-G can decrease contact angle and viscosity, indicating improved hydrophilicity.
Article
Biochemistry & Molecular Biology
Martina Gudelj, Paola Surina, Lucija Jurko, Ante Prkic, Perica Boskovic
Summary: Micellar systems are colloids with significant properties for pharmaceutical and food applications, influenced by the addition of propane-1,2-diol which affects the micellar structure and properties of sodium dodecyl sulfate (SDS). The increase in propane-1,2-diol concentration leads to a lower critical micelle concentration (c.m.c.) with minimal change in micellar size due to solvophobic interactions reduction and electrostatic interaction increase. NMR analysis shows a shift in SDS peaks towards lower ppm regions with propylene glycol addition, indicating a proximity to SDS molecules and a shielding effect on the hydrophilic groups.
Article
Chemistry, Multidisciplinary
Md. Ahad Ali, Md. Abu Bin Hasan Susan
Summary: The volumetric properties of ionic liquid, propane-1,2-diol, and their binary mixtures were studied. The results showed that the introduction of the ionic liquid disrupted the intermolecular hydrogen bonds in the propane-1,2-diol system, leading to changes in molecular-level interactions. These interactions play a significant role in determining the thermodynamic properties of the binary mixtures.
Article
Electrochemistry
Shuangshuang Lei, Mengmeng Xu, Rulin Dong, Changchun Jin
Summary: The study finds that the carbon black-4A zeolite support enhances the catalytic activity of Au nanoparticles, showing higher activity and stability, providing a promising direction for the future applications of electrocatalysts.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Peidong Shi, Yu Zhang, Guanglu Zhang, Xiaojuan Zhu, Shaohua Wang, An-Liang Wang
Summary: This study successfully prepared a highly efficient catalyst for the hydrogen evolution reaction, demonstrating superior activity and long-term stability. The unique hierarchical core-shell structure allows for effective electron transport and abundant active sites.
JOURNAL OF MATERIALS CHEMISTRY A
(2021)
Article
Materials Science, Multidisciplinary
Shuwei Lu, Lei Xu, Biaobing Cao, Jun Zhang, Haiming Duan, Qiang Li
Summary: First-principle molecular dynamics simulations were used to investigate the geometrical structure, electronic structure, and magnetic properties of Co80-xMnxB20 (x = 0, 2, 4, 6, 8, 10, 12 at.%) amorphous alloys. The results revealed that Mn atoms substituted Co atoms and formed a twisted Icosahedral structure with Mn at the center. Mn or Co atoms tended to lose electrons, while B atoms tended to gain electrons. The addition of Mn atoms increased the splitting of B atom's p band. The magnetic moment varied with the increase of Mn content, showing an initial increase and then a decrease. The simulations were in good agreement with experimental findings. The magnetic moment of Mn atoms in the amorphous alloy exhibited ferromagnetic arrangement when x > 6 at.%. However, when x > 6 at.%, some antiferromagnetic arranged Mn atoms appeared, leading to a competition between ferromagnetism and antiferromagnetism in the alloy, resulting in a gradual decrease in the magnetic moment of the amorphous alloy.
RESULTS IN PHYSICS
(2022)
Article
Materials Science, Ceramics
Mengcheng Guo, Hui Wang, Jiangwen Liu, Liuzhang Ouyang
Summary: In this study, it was found that adding amorphous CoB to an amorphous MgNi alloy electrode can enhance its structural stability and cyclic performance, thereby improving its electrochemical performance. After 30 cycles, the capacity of the MgNi mixture with 5% CoB added increased by approximately 114.6 mAh/g compared to pure MgNi.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Chemistry, Multidisciplinary
Liu Jian, Gyung-Min Choi
Summary: The study demonstrates that using an amorphous CoB alloy on top of a sapphire substrate effectively preserves a thin, soft layer at the interface, detecting acoustic propagation and heat transport across it.
APPLIED SCIENCES-BASEL
(2021)
Article
Chemistry, Inorganic & Nuclear
Rajat K. Tripathy, Aneeya K. Samantara, J. N. Behera
Summary: By tuning the annealing temperature, a series of cobalt borides were synthesized and their electrocatalytic activity towards the oxygen evolution reaction (OER) was investigated. The amorphous form of cobalt boride showed higher catalytic activity due to its amorphous nature and synergy between the in situ formed catalytically active centres.
DALTON TRANSACTIONS
(2022)
Article
Chemistry, Applied
Yanan Xing, Leilei Kang, Jingyuan Ma, Qike Jiang, Yang Su, Shengxin Zhang, Xiaoyan Xu, Lin Li, Aiqin Wang, Zhi-Pan Liu, Sicong Ma, Xiao Yan Liu, Tao Zhang
Summary: By studying the atomic-level evolution of the active sites of the PtSn/Al2O3 catalyst during propane dehydrogenation (PDH) reaction, it was found that a highly productive Sn1Pt single-atom alloy forms after reduction and self-assembles into Pt3Sn intermetallic compound during the reaction, exhibiting stable performance. In addition, the study found that the single-atom alloy mediated reconstruction can avoid the coke deposition on adjacent Pt atoms.
CHINESE JOURNAL OF CATALYSIS
(2023)
Article
Engineering, Environmental
Jiangang Wang, Yifan Liu, Jinghua Wang, Tihang Liu, Zhaobing Pang, Hongyou Cui, Yuan Zhang, Feng Song
Summary: Efficient conversion of biomass sugars to lactate is achieved using a hybrid catalyst composed of two carbon-based catalysts. The catalytic performance of the hybrid catalyst is superior to previously reported values, demonstrating the potential for value-added chemical production from biomass-derived sugars.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Riikka Kupila, Katja Lappalainen, Tao Hu, Anne Heponiemi, Davide Bergna, Ulla Lassi
Summary: The study showed that SnO2@AC catalyst was more active and selective in triose conversion to ethyl lactate, while ZnO@AC was more selective in glucose and hydrolysate conversion.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Chemistry, Physical
Anshu Dandia, Pratibha Saini, M. J. Chithra, Sivaranjana Reddy Vennapusa, Vijay Parewa
Summary: An efficient and sustainable protocol for the hydration of alkynes has been developed under metal/acid/catalyst/ligand-free conditions in a water/ethyl lactate mixture. The hydrogen-bond network in the ethyl lactate and water mixture plays a crucial and decisive role in activating the alkynes for hydration to afford the corresponding methyl ketones. This method selectively produces the Markovnikov addition product and has been further explored for the competent production of alpha,beta-unsaturated carbonyl compounds, using the ethyl lactate/water medium as a green alternative.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Multidisciplinary
Hongyan Wang, Ran Wei, Xiumin Li, Xuli Ma, Xiaogang Hao, Guoqing Guan
Summary: Amorphous high-entropy alloys exhibit optimized bonding energy and enhanced intrinsic catalytic activity compared to crystalline ones, with even better performance after electrochemical etching treatment. The nanostructured amorphous Fe29Co27Ni23Si9B12 HEA ribbon, fabricated through a melt spinning method combined with electrochemical corrosion etching process, shows superior electrocatalysis activity, requiring lower overpotential and higher current density. Density functional theory calculations suggest that the amorphous structure weakens the interaction between the alloy surface and intermediates, resulting in optimized adsorption Gibbs free energy.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Physical
Tianliang Lu, Zhiyun Yang, Hongji Li, Haijun Chen, Jun Xu, Chunbao Charles Xu, Jianshe Wang, Zhongjun Li, Yongsheng Zhang
Summary: This study presents a highly efficient photocatalytic strategy for the synthesis of ethyl pyruvate at room temperature. By using ZnIn sulfides as catalysts under visible light irradiation, 100% conversion of ethyl lactate with 88.4% yield of ethyl pyruvate was achieved. The optimized catalyst exhibited high surface area and efficient separation and transport of electron-hole pairs.
JOURNAL OF CATALYSIS
(2022)
