Article
Chemistry, Multidisciplinary
Linglan Fang, Lu Xiao, Yong Woong Jun, Yoshiyuki Onishi, Eric T. T. Kool
Summary: The presence of a hydroxyl group at the 2'-position in ribose makes RNA susceptible to hydrolysis. In this study, reversible 2'-OH acylation was presented as a general strategy to preserve RNA stability. High-yield polyacylation of 2'-hydroxyls effectively protected RNAs from degradation, and subsequent treatment with nucleophilic reagents removed acylation adducts and recovered a wide range of RNA functions.
Article
Chemistry, Inorganic & Nuclear
Rebecca D. Stern, Ryan S. Kingsbury, Kristin A. Persson
Summary: Framework materials, such as metal-organic frameworks (MOFs), rely on precursor molecular building blocks for their synthesis. The stability of hexanuclear Zr(IV) clusters in aqueous solution is found to be lower compared to tetranuclear clusters, suggesting the need for more strategic syntheses to improve their stability. Electronic structure analyses provide insights into the properties of these clusters and indicate potential ways to promote the stability of hexanuclear Zr(IV) clusters.
INORGANIC CHEMISTRY
(2021)
Article
Metallurgy & Metallurgical Engineering
Shi-jie Lyu, Jiang-tao Li, Xu-heng Liu, Xing-yu Chen, Li-hua He, Feng-long Sun, Zhong-wei Zhao
Summary: This paper introduces the unique and widely used tungsten metallurgy technology in China, caustic soda autoclaving process for digesting scheelite (CaWO4), and reports on its operational details and theoretical basis.
JOURNAL OF CENTRAL SOUTH UNIVERSITY
(2023)
Article
Chemistry, Multidisciplinary
Xinlong Liu, Bingang Xu, Jian Lu, Jing Han, Shenzhen Deng, Xiao Yu, Yongling An, Yun Tang
Summary: This study proposes a method to improve the reversibility of zinc-ion batteries by optimizing the electrolyte composition and using MES additive. The MES additive can protect the zinc electrode surface from dendrite growth and prevent parasitic reactions by buffering the pH of the electrolyte and controlling the solvation structure. Experimental results show that the zinc anode in the MES-based electrolyte exhibits exceptional plating/stripping lifespan and high coulombic efficiency.
Article
Chemistry, Multidisciplinary
Kangkai Hu, E. Lei, Dan Zhao, Zhengang Guo, Bo Zhang
Summary: Potassium titanyl oxalate and HCl were used to synthesize Ti2O3(H2O)(2)(C2O4) · H2O with excellent reversible photochromic properties, showing achromatic or colorless characteristics as a P-type photochromic compound. The discoloration or fading equilibrium time is 30 minutes. The photochromic properties are attributed to the continuous reaction of Ti4+, Ti3+, e(cb)(-), V-O(++) in unsaturated cationic compounds.
Article
Chemistry, Physical
Daliang Han, Zhenxing Wang, Haotian Lu, Huan Li, Changjun Cui, Zhicheng Zhang, Rui Sun, Chuannan Geng, Qinghua Liang, Xiaoxia Guo, Yanbing Mo, Xing Zhi, Feiyu Kang, Zhe Weng, Quan-Hong Yang
Summary: By using a low-cost ammonium acetate (NH4OAc) additive, a self-regulated zinc/electrolyte interface is built to address the issues of rapid performance deterioration of zinc anodes. The additive induces a dynamic electrostatic shielding layer around the zinc protuberance, promoting uniform zinc deposition, and acts as an interfacial pH buffer to suppress side reactions and precipitation of insoluble by-products. These findings pave the way for practical zinc batteries.
ADVANCED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Wei Zhang, Yuhang Dai, Ruwei Chen, Zhenming Xu, Jianwei Li, Wei Zong, Huangxu Li, Zheng Li, Zhenyu Zhang, Jiexin Zhu, Fei Guo, Xuan Gao, Zijuan Du, Jintao Chen, Tianlei Wang, Guanjie He, Ivan P. Parkin
Summary: In this study, a multifunctional additive NHP was introduced to regulate zinc deposition and suppress side reactions in aqueous electrolyte. The results showed that the NHP additive enabled highly reversible Zn plating/stripping behaviors, and improved the electrochemical performances of zinc-ion batteries and zinc-based capacitors.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Inorganic & Nuclear
Wen-Zhuo Zhao, Yi-Nan Zhang, You-Zhao Lan, Jian-Wen Cheng, Guo-Yu Yang
Summary: A new acentric barium borate compound with layered structure and 9-ring channels along the c axis has been synthesized via hydrothermal process. It shows potential as a deep-ultraviolet nonlinear-optical crystal with moderate second-harmonic-generation signal and wide transparency window below 190 nm.
INORGANIC CHEMISTRY
(2022)
Article
Electrochemistry
Pradipkumar Leuaa, Christodoulos Chatzichristodoulou
Summary: A reversible hydrogen electrode and a Palladium hydride reference electrode are proposed for stable potential measurements under high temperature and pressure conditions. The potential of the PdH electrode in the mixed (alpha + beta)-phase is found to be independent of temperature and pressure, offering the potential for long-term stable potential measurements.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Multidisciplinary
Weidong Ao, Huijun Ren, Changgen Cheng, Zhishuai Fan, Qing Qin, Peiqun Yin, Qi Zhang, Lei Dai
Summary: Rational design of electrocatalysts is crucial for achieving desired performance in electrochemical synthesis. Heterostructured catalysts have attracted significant attention due to their multifunctional intrinsic properties and excellent catalytic applications. In this study, ultrathin Pd-Ni(OH)(2) nanosheets were synthesized using an in situ restoration strategy and exhibited remarkable activity and selectivity in the reversible electrochemical reforming of ethylamine and acetonitrile. The Pd-Ni(OH)(2) nanosheets act as a reaction center in the acetonitrile reduction process, while Ni(OH)(2) promotes water dissociation to provide proton hydrogen. Additionally, the oxidation of ethylamine can be achieved on the surface of the heterostructured nanosheets with abundant Ni(II) defects. Furthermore, an electrolytic cell driven by solar cells was successfully constructed to realize reversible reforming of ethylamine and acetonitrile. This work highlights the importance of heterostructure engineering in the rational synthesis of multifunctional catalysts for electrochemical synthesis of fine chemicals.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Yang Liu, Gaoyu Liu, Ye Wu, Wenbing Cai, Yue Wang, Shengli Zhang, Haibo Zeng, Xiaoming Li
Summary: Thermochromic fluorescent materials (TFMs) with noticeable emission color variation have attracted widespread attention for their applications in stimulus-response and optical encryption technologies. However, existing TFMs face challenges such as weak PL reversibility, limited operating temperature, and severe temperature PL quenching. This study demonstrates high-temperature thermochromic fluorescence up to 473 K and robust reversibility in Rb2MnBr4(H2O)(2) crystals, which is rarely seen at such a high temperature. The temperature-driven PL switching allows for a multicolor anti-counterfeiting label and multidimensional information encryption.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Inorganic & Nuclear
Qi-Ming Qiu, Xu-Yan Li, Chong-An Chen, Ke-Ning Sun, Guo-Yu Yang
Summary: A new polar polymorph borate, beta-Ca-2[B5O8(OH)](2)[B(OH)(3)]center dot H2O (beta-CBO), was synthesized through hydrothermal reaction, showing that alkaline-earth metal borate could have a polar polymorph under mild conditions. Compared to the previously synthesized alpha-CBO, beta-CBO exhibits a larger second-harmonic generation (SHG) response due to its larger dipole moments.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Inorganic & Nuclear
Sh. Sh. Yakubov, D. O. Obidzhonov, M. Sh. Adilova, R. N. Kim, B. Kh. Kucharov, B. S. Zakirov
Summary: The mutual effect of components in a complex aqueous system consisting of calcium chlorate, ammonium dihydrogen phosphate, and ammonium chloroethylphosphonates was studied. The solubility polythermal diagram and composition-property diagram of the system were established to provide a foundation for the preparation of efficient stimulants and mild defoliants.
RUSSIAN JOURNAL OF INORGANIC CHEMISTRY
(2023)
Article
Materials Science, Multidisciplinary
Yoshihiko Ihara, Ryoga Hiyoshi, Masakazu Shimohashi, Kaoru Hayashi, Ryutaro Okuma, Fabio Orlandi, Pascal Manuel, Goran J. Nilsen, Zenji Hiroi
Summary: Neutron diffraction and nuclear magnetic resonance (NMR) measurements were used to analyze the magnetic structure of the S = 12 kagome antiferromagnet CdCu3(OH)(6)(NO3)(2) middot H2O. The results revealed a chirality-ordered magnetic structure with negative vector chirality and (100) anisotropy.
Article
Engineering, Electrical & Electronic
Zhaoxia Shi, Hua Zhou, Feng Li, Taohai Li
Summary: In this study, a nano-sized sodium zinc hydroxide molybdenum material was synthesized by a one-step sonochemistry method and applied for the sonocatalytic degradation of methyl orange. The reaction conditions and ultrasonic power were found to influence the morphology and performance of the material, and a possible growth mechanism under ultrasonic radiation conditions was proposed. The prepared sonocatalyst exhibited excellent degradation efficiency under ultrasonic irradiation and its catalytic activity was optimized. A possible mechanism of ultrasonic catalytic degradation was proposed based on free radical capture experiments.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Review
Chemistry, Multidisciplinary
Si-Xuan Guo, Cameron L. Bentley, Minkyung Kang, Alan M. Bond, Patrick R. Unwin, Jie Zhang
Summary: This article introduces two advanced spatiotemporal voltammetric techniques for electrocatalytic studies, which provide important insights into the electrochemical reduction of CO2. Fourier transformed large-amplitude alternating current voltammetry allows the resolution of rapid electron-transfer processes, while scanning electrochemical cell microscopy provides high-resolution activity maps and potentiodynamic movies of catalyst surfaces.
ACCOUNTS OF CHEMICAL RESEARCH
(2022)
Article
Chemistry, Applied
Dilini Bopitiya, Milton T. W. Hearn, Jie Zhang, Louise E. Bennett
Summary: This study reports the levels of H2O2 in commercially manufactured orange juice (OJ) products. It found that the concentrations of H2O2 were significantly higher in processed OJ compared to fresh OJ. The levels of H2O2 were uncorrelated with storage time post-manufacture, and increased after opening, followed by a significant decrease after 24 hours. Ascorbic acid, total reducible substances, and total sugar were positively correlated with H2O2 levels, whereas total protein, fiber, and unsaturated fats were negatively correlated.
Article
Chemistry, Applied
Dilini Bopitiya, Sixuan Guo, Milton T. W. Hearn, Jie Zhang, Louise E. Bennett
Summary: Recently, it has been discovered that autoxidation mediated by ascorbic acid (AA) and other ingredients in energy beverages can generate hydrogen peroxide (H2O2). In this study, cyclic voltammetry and the FOX assay were used to monitor the production and stability of H2O2 generated by AA and redox-active ingredients at short and long incubation times, respectively. The levels of H2O2 in energy drinks were found to be stable or increased upon vessel opening. A predictive model showed that H2O2 peaked after 1 day and declined over time. This research highlights the importance of monitoring H2O2 levels and modifying formulations to avoid AA autoxidation in beverages.
Article
Chemistry, Multidisciplinary
Peng Zhou, Si-Xuan Guo, Linbo Li, Tadaharu Ueda, Yoshinori Nishiwaki, Liang Huang, Zehui Zhang, Jie Zhang
Summary: In this study, highly efficient carbon supported Ni-MoO2 heterostructured catalysts were reported for the electrochemical hydrogenation (ECH) of phenol in 0.10 M aqueous sulfuric acid (pH 0.7) at 60 degrees C. Catalysts with high and low densities of oxygen vacancy (O-v) sites achieved the highest yields of cyclohexanol and cyclohexanone, 95% and 86%, respectively, with faradaic efficiencies of approximately 50%. The enhanced phenol adsorption strength attributed to the O-v density was found to be responsible for the superior catalytic efficiency. This work provides a promising avenue for the rational design of advanced electrocatalysts for the upgrading of phenolic compounds.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Applied
Dilini Bopitiya, Milton T. W. Hearn, Jie Zhang, Louise E. Bennett
Summary: This study aimed to demonstrate the ultimate antioxidant effects of protein extract from mustard seed in suppressing hydrogen peroxide (H2O2). The results showed that the mustard seed protein isolate (MPI) could completely suppress the production of H2O2 in orange juice, with slightly higher antioxidant efficacy than the reference protein thaumatin. The thiol-rich amino acid-containing proteins and other antioxidants in MPI were highly effective in inhibiting the autoxidation-mediated production of H2O2 in orange juice and could be useful for other manufactured beverages.
Article
Chemistry, Inorganic & Nuclear
Xinlin Lu, Ting Cheng, Yurii Geletii, Craig L. Hill
Summary: This study reports a catalytic system with its own built-in redox buffer, which can control the electrochemical potential of the solution and impact the products of redox reactions. The system consists of two highly synergistic components and can catalyze the aerobic oxidative deodorization of thiols. The study demonstrates the close relationship between the catalytic activity of the system and its redox buffering capability.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Anbrah E. Alzubidi, Alan M. Bond, Lisandra L. Martin
Summary: Published data suggests that sparingly soluble metal complexes of TCNQF1-n, where n=0, 1, 2, 4, can act as heterogeneous catalysts for the slow [Fe(CN)6]3- =4- -S2O2-3/S4O2-6 reaction in water. However, this study shows that the coordination polymer CuTCNQF4 can participate as a homogeneous catalyst through a small concentration of dissolved TCNQF1-4. UV-visible spectrophotometry was used to study the catalysis of the redox reaction in the presence of various catalysts. The findings suggest the need to reevaluate the mechanism of catalysis by TCNQF4 based solids.
Article
Chemistry, Inorganic & Nuclear
Xinlin Lu, Yurii Geletii, Ting Cheng, Craig L. Hill
Summary: A recent report revealed that the TBA salt of PV6Mo6 serves as a redox buffer for deodorization of thiols in acetonitrile with Cu(II) as a co-catalyst. The number of vanadium atoms in PVMo has a significant impact on the catalytic activity, with PVMo containing more vanadium atoms exhibiting higher activity due to their ability to undergo more and faster redox changes.
INORGANIC CHEMISTRY
(2023)
Review
Chemistry, Multidisciplinary
Peng Zhou, Jie Zhang
Summary: Replacing conventional fossil resources with renewable raw materials is crucial for achieving carbon neutrality and alleviating the energy crisis. Biomass, due to its natural abundance and ability to fix CO2, is considered a promising candidate for this purpose. Electrochemical conversion of biomass offers advantages such as operating at ambient conditions, scalability, and green generation of equivalents. This review discusses recent progress in electrochemical transformation of biomass, including catalysts, strategies for enhancing efficiency, and mechanistic understanding.
SCIENCE CHINA-CHEMISTRY
(2023)
Article
Chemistry, Physical
Madhurima Barman, Venkata Sai Sriram Mosali, Alan M. Bond, Jie Zhang, A. Sarkar
Summary: This study investigates the effects of morphology, specific surface area, and relative content of Cu/Cu-oxide in CuO-derived Cu electrocatalysts on the current density and product formation during electrochemical carbon dioxide reduction reaction (eCO(2)RR). The results show that the Cu-content of the CuO-derived Cu electrocatalysts determines the type of products and their corresponding faradic efficiencies, with higher initial Cu-content resulting in higher faradic efficiencies at lower negative potentials. Furthermore, it is found that high Cu-content, regardless of morphology, is particularly important for the formation of methane and formate. Therefore, this study reveals the relative roles of specific surface area and Cu/CuO-content of CuO-derived Cu electrocatalysts on the current densities, product formation, and associated faradic efficiencies in eCO(2)RR.
Article
Chemistry, Physical
Anbrah E. Alzubidi, Alan M. Bond, Lisandra L. Martin
Summary: Mechanistic variation in catalysis through substituent-based redox tuning is well established. Fluorination of TCNQ provides a significant variation in the redox potentials of the TCNQF(n)(0/1-) and TCNQF(n)(1/2-) processes. The catalysis of the ferrocyanide-thiosulfate redox reaction in aqueous solution occurs via different mechanisms depending on the presence of fluorinated or non-fluorinated catalysts. Thermodynamic data explain the observed differences in the catalytic mechanisms for the two systems. CuTCNQF(n) coordination polymers, previously considered as insoluble and heterogeneous catalysts, are shown to act as homogeneous catalysts in the ferricyanide-thiosulfate reaction.
Article
Biochemistry & Molecular Biology
Ruchika Ojha, Peter C. Junk, Alan M. Bond, Glen B. Deacon
Summary: Pt-IV coordination complexes were synthesized by oxidizing the antitumor agent [Pt-II(p-BrC6F4)NCH2CH2NEt2}Cl(py)]. Experimental data showed that excess H2O2 and elevated temperature favored the oxidation of the ligand, while a smaller amount of H2O2 at room temperature favored the oxidation of the metal, resulting in the formation of platinum(IV) complexes.
Article
Materials Science, Multidisciplinary
Thom R. Harris-Lee, Enrico Della Gaspera, Frank Marken, Jie Zhang, Cameron L. Bentley, Andrew L. Johnson
Summary: Aerosol-assisted chemical vapor deposition (AACVD) was used to fabricate highly nanostructured mixed anatase-rutile phase TiO2 using new and bespoke precursors. The precursor syntheses involved two steps and the suitability for AACVD was assessed using thermogravimetric analysis. The resulting TiO2 films showed exceptional OH- oxidation performance and promise for use in photoanodes for water splitting applications.
MATERIALS ADVANCES
(2023)
Article
Chemistry, Physical
Xinlin Lu, Ting Cheng, Yurii V. Geletii, John Bacsa, Craig L. Hill
Summary: The synergism between polyoxometalates (POM) and Cu(ii) ions in heterogeneous aerobic thiol oxidative deodorization has been achieved in a multi-electron-capable POM captured in a metal-organic framework (MOF), HKUST-1 (POM@HKUST). PVMo@HKUST exhibits near 100% conversion and the catalyst can be recovered and remains unchanged after reaction. PXW11@HKUST materials show limited conversions and decompose to white powders after reaction.
CATALYSIS SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Venkata Sai Sriram Mosali, Alan M. Bond, Jie Zhang
Summary: Excessive reliance on fossil fuels has caused CO2 emissions, leading to environmental pollution and global warming. The electrochemical conversion of CO2 to valuable chemicals or fuels using alloy catalysts can mitigate this problem. Alloying copper with other metals can enhance the selectivity of copper catalysts, enabling the production of desired products.
