Article
Chemistry, Multidisciplinary
Jiaqian Yang, Nana Gong, Liyan Wang, Yingquan Wu, Tao Zhang, Hongjuan Xie, Guohui Yang, Yisheng Tan
Summary: The study investigated Cu-CuPS catalysts supported on silica for CO hydrogenation into ethanol. By adjusting the Cu/CuPS ratio, the optimal catalyst 0.33Cu/0.67CuPS was found to exhibit high ethanol selectivity and space time yield towards alcohols. Adjusting the Cu+/(Cu+ + Cu-0) ratio is crucial for enhancing ethanol yield during CO hydrogenation.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Dawei Cao, Shumei Xia, Pan Pan, Huiying Zeng, Chao-Jun Li, Yong Peng
Summary: This study developed a direct light-driven method for reducing ketones/aldehydes to alcohols using isopropanol as the reducing agent and solvent. This simple and practical approach can be used to produce alcohol derivatives and bioactive molecules, showing promising application potential.
Article
Chemistry, Multidisciplinary
Jennifer D. Lee, Zhen Qi, Alexandre C. Foucher, Hio Tong Ngan, Kevin Dennis, Jun Cui, Ilia I. Sadykov, Ethan J. Crumlin, Philippe Sautet, Eric A. Stach, Cynthia M. Friend, Robert J. Madix, Juergen Biener
Summary: The dissociation of H-2 is a crucial step in many industrial chemical reactions. This study introduces a hierarchical nanoporous Cu catalyst doped with small amounts of Ti, which significantly enhances the rate of H-2-D-2 exchange compared to undoped Cu catalysts. Experimental results show that the Ti-doped catalyst exhibits a 5-7 times higher exchange rate than the undoped Cu material under optimized pretreatment and reaction temperatures. This enhancement is primarily attributed to the shift in the rate-determining step from dissociative adsorption on Cu to H/D atom recombination on Ti-doped Cu.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Multidisciplinary Sciences
Hardiljeet Kaur Boparai, Omneya El-Sharnouby, Denis M. O'Carroll
Summary: Aqueous-phase catalyzed reduction of organic contaminants using zerovalent copper nanoparticles (nCu(0)) and borohydride has shown promising results. The study examined the effects of Cu-0/Cun+ ratio, surface poisoning, and regeneration of Cu-0 sites on the dechlorination of 1,2-dichloroethane (1,2-DCA). The results suggest that synthesis parameters and groundwater solutes influence the catalytic activity of nCu(0)-borohydride.
SCIENTIFIC REPORTS
(2023)
Article
Chemistry, Physical
Zhiyuan Zong, Hongzi Tan, Pengrui Zhang, Chao Yuan, Rongrong Zhao, Feng Song, Weiming Yi, Fengshan Zhang, Hongyou Cui
Summary: In this study, a MOF-derived Cu/SiO2 catalyst was developed for the furfural (FF) hydrogenation reaction, which showed superior catalytic performance compared to Cu/SiO2 catalysts prepared by traditional methods. The Cu/SiO2-MOF catalyst not only anchored copper species on the silica surface via Cu-O-Si bonds, but also exposed more active sites, resulting in a higher Cu+/(Cu+ + Cu-0) ratio and richer oxygen defects. The solvent effect on product distribution was found to play an important role in adjusting selectivity. This research provides insights into the catalytic mechanism of Cu/SiO2-MOF and has implications for the design and synthesis of efficient catalysts in other heterogeneous catalysis fields.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Polymer Science
Theophile Pelras, Anton H. Hofman, Lieke M. H. Germain, Anna M. C. Maan, Katja Loos, Marleen Kamperman
Summary: By utilizing Cu(0)RDRP, block copolymers with both strong anionic and charge-neutral segments were synthesized. These copolymers demonstrated self-assembly capabilities in aqueous media, showing potential for various applications.
Article
Engineering, Chemical
Ziying Hong, Bin Shan, Wei Liu, Huijiang Huang, Yue Wang, Yujun Zhao, Xinbin Ma
Summary: This study reports the synthesis of a nanoflower-like Cu/ZnO catalyst via a one-step hydrothermal method for the hydrogenation of methyl acetate. The presence of Cu-ZnO interaction promotes high dispersion of active species and increases the proportion of Cu+. The open nanoflower-like structure ensures a large specific surface area and better accessibility of the active sites for reactant adsorption.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Multidisciplinary
Zhihao Yu, Na Ji, Jian Xiong, You Han, Xiaoyun Li, Rui Zhang, Yina Qiao, Ming Zhang, Xuebin Lu
Summary: This study presents a metal pre-chelating assisted assembly strategy to synthesize Ru@Shell-HCSs nanoreactors with preferred catalytic microenvironments for efficient hydrogenation of biomass-derived furfural. The channel-embedding structure enhances the electron-deficient property of ultrafine ruthenium clusters, leading to an accelerated tandem hydrogenation progression for enhanced 2-methylfuran generation.
Article
Chemistry, Multidisciplinary
Sara M. Franzen, Linnea Jonsson, Pau Ternero, Monica Karedal, Axel C. Eriksson, Sara Blomberg, Julia-Maria Hubner, Maria E. Messing
Summary: This study investigates the compositional tuning of Pd-Cu bimetallic nanoparticles using the spark ablation method, demonstrating the ability to tailor the chemical composition within a wide range. The comprehensive analyses provide insights into the formation and structure of bimetallic nanoparticles, paving the way for the development of efficient and affordable catalysts.
NANOSCALE ADVANCES
(2023)
Article
Chemistry, Physical
Xiaojing Cui, Shuai Chen, Huanhuan Yang, Yequn Liu, Huifang Wang, He Zhang, Yanfeng Xue, Guofu Wang, Yulan Niu, Tiansheng Deng, Weibin Fan
Summary: By dispersing a commercial Cu/ZnO/Al2O3 catalyst on a silica support, it was found that the distance between Cu nanoparticles on silica can affect the selectivity of methanol production in CO2 hydrogenation, this distance effect was confirmed through various experimental methods.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Polymer Science
Fehaid M. Alsubaie, Othman Y. Alothman, Basheer A. Alshammari, Hassan Fouad
Summary: In this study, copper-mediated reversible deactivation radical polymerization of homo-polyacrylamides was conducted in aqueous solutions at 0.0 degrees C, resulting in well-defined water-soluble homopolymers with narrow dispersity. The effect of decreasing the reaction temperature on the polymerization rate was also investigated, showing that temperatures below 0.0 degrees C did not affect the controlled polymerization and process rate.
Article
Energy & Fuels
Balaji G. Ghule, Ji-Hyun Jang
Summary: First-principles-based density functional theory (DFT) calculations were used to investigate the electrochemical CO2 reduction (ECR) activity of cation-doped Bi2O3. The ECR reaction over pure and doped Bi2O3 (100) surfaces was studied, and Gibbs free energy diagrams of HCOOH formation via COOH and HCOO pathways were demonstrated. Doping can alter the rate-determining step and reduce the Gibbs free energy, resulting in enhanced CO2 reduction activity on the TiZr-Bi2O3 surface.
Article
Chemistry, Organic
Dian Yu, Si-Yuan Peng, Han Wang, Qiu-Cui Zheng, Ya-Hui Ma, Dong-Yi Xiao, Qian-Li Li, Wen-Shu Wang, Xiao-Jie Cui, Fei-Xian Luo
Summary: In this work, a one-pot strategy was developed for the precise modification of amides derived from natural amino acids via Pd/Cu-catalyzed cascade γ-C(sp(3))-H arylation/C-N coupling. This strategy successfully synthesized valuable chiral 2-functionalized tetrahydroquinoline motifs with good chirality maintenance. It offers an alternative route for the synthesis of chiral tetrahydroquinolines with good regioselectivity and broad functional group compatibility for drug discovery. The methodology has also been demonstrated for the late-stage functionalization of natural products, drugs, and biomolecules.
ORGANIC CHEMISTRY FRONTIERS
(2023)
Article
Chemistry, Multidisciplinary
Jun Di, Chao Chen, Yao Wu, Yunxuan Zhao, Chao Zhu, Yi Zhang, Changda Wang, Hailong Chen, Jun Xiong, Manzhang Xu, Jiexiang Xia, Jiadong Zhou, Yuxiang Weng, Li Song, Shuzhou Li, Wei Jiang, Zheng Liu
Summary: A universal atomic layer confined doping strategy is developed to prepare Bi24O31Br10 materials incorporating isolated Cu atoms, which enables better electron delocalization for effective N-2 activation. The optimized Cu-Bi24O31Br10 atomic layers show significantly improved photocatalytic nitrogen fixation activity than Bi24O31Br10 atomic layer and bulk Bi24O31Br10, and alter the hydrogenation pathways.
ADVANCED MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zhongcheng Xia, Yingying Li, Jingcheng Wu, Yu-Cheng Huang, Weixing Zhao, Yuxuan Lu, Yuping Pan, Xu Yue, Yanjing Wang, Chung-Li Dong, Shuangyin Wang, Yuqin Zou
Summary: This study reveals the active oxidation state of Cu-based catalysts for the electrochemical hydrogenation of furfural and confirms the co-existence of Cu+ and Cu-0 on the catalyst surface. Furthermore, it demonstrates the crucial role of Cu+ in the reaction, and the density functional theory calculations suggest that the synergistic effect of Cu-0 and Cu+ is beneficial for both kinetics and thermodynamics.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Anatomy & Morphology
Ming Zhou, Akimitsu Ishizawa, Hideo Akashi, Ryoji Suzuki, Yoshio Bando
Summary: This study classified variations of the flexor carpi radialis with accessory muscular bundles and different insertions of the tendon. These findings are important for anatomical education and have significant implications in clinical diagnosis and therapies.
ANATOMICAL SCIENCE INTERNATIONAL
(2023)
Article
Chemistry, Physical
Hao Tian, Yujun Zhang, Ziyang Zhang, Tingting Lv, Lei Bian, Hong Wang, Jianxin Li, Yusuke Yamauchi, Zhong-Li Wang
Summary: This study demonstrates a new technology to directly convert cyclohexane to adipic acid by electrocatalytic water oxidation, which generates hydroxyl radicals and achieves optimized conversion and selectivity. This provides opportunities for oxidatively converting inexpensive hydrocarbons to value-added chemicals.
Article
Engineering, Environmental
Taotao Meng, Zhengtong Li, Zhangmin Wan, Jing Zhang, Luzhen Wang, Kangjie Shi, Xiangting Bu, Saad M. Alshehri, Yoshio Bando, Yusuke Yamauchi, Dagang Li, Xingtao Xu
Summary: Soil water extraction based on interfacial solar-thermal technology using a double-layer solar evaporator with a ZIF-8-derived carbon coating on a wood sponge can efficiently achieve evaporation and provide clean drinking water in arid inland areas. The wood sponge offers water-extraction advantages due to its super hydrophilic channels, while the carbon coating promotes photothermal conversion. The double-layer solar evaporator exhibits high sunlight absorbance, low thermal conductivity, stronger capillary force, and rapid water transport.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Qianqian Wang, Shuaihua Zhang, Zhi Li, Zhi Wang, Chun Wang, Saad M. Alshehri, Yoshio Bando, Yusuke Yamauchi, Qiuhua Wu
Summary: In this study, a series of novel hypercrosslinked polymers with adjustable polarity were designed and synthesized for the preconcentration of aflatoxins. By integrating magnetism into the polymers, a magnetic sorbent was prepared and displayed excellent adsorption ability. The method achieved good linearity, low detection limits, and high enrichment factors.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Dmitry Kogolev, Oleg Semyonov, Nadezhda Metalnikova, Maxim Fatkullin, Raul D. D. Rodriguez, Petr Slepicka, Yusuke Yamauchi, Olga Guselnikova, Rabah Boukherroub, Pavel S. S. Postnikov
Summary: We propose utilizing laser-assisted carbonization of surface-grown UiO-66 to diversify the upcycling of waste PET into materials with enhanced photothermal properties. A solvo-thermal procedure was used to form a homogeneous UiO-66 layer on recycled PET sheets. Treatment with a 405 nm laser system enabled the formation of a carbonaceous layer with improved electrical conductivity and photothermal properties due to the presence of zirconium carbide and graphene. This approach presents new possibilities for the application of upcycled PET-based materials.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Mohammed G. Kotp, Nagy L. Torad, Johann Luder, Ahmed A. M. El-Amir, Watcharop Chaikittisilp, Yusuke Yamauchi, Ahmed F. M. EL-Mahdy
Summary: In this study, two novel phenazine-based CMPs, TPT-QP CMPs and Py-QP CMPs, were successfully synthesized through the Suzuki coupling condensation reaction. These CMPs have high surface areas and good thermal stabilities. TPT-QP CMPs, in particular, have abundant hydrogen-bonding sites and demonstrate high sensitivity and selectivity in detecting sub-ppm levels of volatile acidic hydrocarbons. Additionally, a quartz crystal microbalance (QCM) sensor based on TPT-QP CMPs was fabricated for the first time, showing excellent performance in detecting trace amounts of formaldehyde.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Ruijing Xin, Minjun Kim, Ping Cheng, Aditya Ashok, Silvia Chowdhury, Teahoon Park, Azhar Alowasheeir, Md Shahriar Hossain, Jing Tang, Jin Woo Yi, Yusuke Yamauchi, Yusuf Valentino Kaneti, Jongbeom Na
Summary: Hierarchically porous bimetallic zeolitic imidazolate framework (ZIF) particles (etched Zn33Co67-ZIF) were designed and prepared through an ethylene glycol-assisted aqueous etching method, which effectively increased their pore size and surface area. After thermal treatment, the etched Zn33Co67-ZIF particles transformed into cobalt and nitrogen co-doped hierarchically porous carbon (etched Zn33Co67-C), which exhibited increased mesoporosity and specific capacitance compared to the unetched one. The presented ethylene glycol-assisted aqueous etching process provides a facile template-free strategy for improving the energy storage performance of MOFs and their corresponding porous carbons.
JOURNAL OF MATERIALS CHEMISTRY A
(2023)
Article
Chemistry, Physical
Lulu Jia, Fang Xian, Yoshiyuki Sugahara, Nobuyuki Sakai, Emmanuel Picheau, Hairong Xue, Yusuke Yamauchi, Takayoshi Sasaki, Renzhi Ma
Summary: Ultrathin nanosheets of Ni-, Co-, and Fe-based (oxy)hydroxides show promising catalytic activity for OER in water electrolysis under alkaline conditions. Fe may play a crucial role in the catalytic process of Ni- or Co-based catalysts, but effective methods for preparing and studying pure Fe hydroxide nanosheets are lacking.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Yi-Fu Song, Zi-Yang Zhang, Hao Tian, Lei Bian, Yu Bai, Zhong-Li Wang
Summary: By optimizing the chemical and electrochemical corrosion process, NiFe-LDH macroporous array electrodes were fabricated to significantly enhance the activity and stability for the oxygen evolution reaction.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Chemistry, Physical
Ping Cheng, Xiaohan Wang, Josua Markus, Md Abdul Wahab, Silvia Chowdhury, Ruijing Xin, Saad M. Alshehri, Yoshio Bando, Yusuke Yamauchi, Yusuf Valentino Kaneti
Summary: This work introduces coordinated water into Ni-BTC nanorods, resulting in their transformation to Ni-BTC nanofibres. The carbonization of the NiBTC nanofibres at 600 degrees C leads to the formation of carbon nanotube-decorated porous nickel/carbon hybrid with enlarged pores. The Ni/C-600 hybrid exhibits higher adsorption capacity and better recyclability compared to the original Ni-BTC nanorods.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Han Jiao, Chun Wang, Zi-Yang Zhang, Yi-Fu Song, Bai-qi Feng, Ping Na, Zhong-Li Wang
Summary: Ultrafine Mo modified NiFeOxHy (oxy)hydroxide nanosheet arrays were successfully synthesized using molybdates as unique precursors and an electrochemical activation process. The optimized catalyst exhibited excellent performance for the oxygen evolution reaction (OER) with small overpotential and long-term stability.
Article
Chemistry, Multidisciplinary
Vasilios Karanikolas, Takuya Iwasaki, Joel Henzie, Naoki Ikeda, Yusuke Yamauchi, Yutaka Wakayama, Takashi Kuroda, Kenji Watanabe, Takashi Taniguchi
Summary: High-quality emission centers in two-dimensional materials, such as carbon-enriched hexagonal boron nitride (hBN:C) layers, are promising for future photonic and optoelectronic applications. By placing hBN:C layers on Ag triangle nanoparticles (NPs), the decay time of atom-like color-center (CC) defects is accelerated to 46 ps from their bulk value of 350 ps, due to efficient excitation of plasmon modes. Simulations suggest higher Purcell values, and analysis reveals the influence of NP thickness on the Purcell factor of CCs. The ultrafast operation of CCs in hBN:C layers enables their use in demanding applications like single-photon emitters and quantum devices.
Article
Chemistry, Applied
Zi-Yang Zhang, Hao Tian, Lei Bian, Shi-Ze Liu, Yuan Liu, Zhong-Li Wang
Summary: Researchers developed a Cu-Zn alloy/Cu-Zn aluminate oxide composite electrocatalytic system to enhance the conversion of CO2 to C2+ products. They found that Cu-Zn oxide transforms into Cu-Zn alloy while Cu-Zn aluminate oxide remains unchanged. The closely stacked alloy and oxide create highly active reaction interfaces, promoting the adsorption and activation of CO2, dissociation of H2O, and adsorption of CO intermediates, resulting in efficient C-C coupling to produce C2+ products.
JOURNAL OF ENERGY CHEMISTRY
(2023)
Article
Chemistry, Physical
Zi-Yang Zhang, Hao Tian, Han Jiao, Xin Wang, Lei Bian, Yuan Liu, Nithima Khaorapapong, Yusuke Yamauchi, Zhong-Li Wang
Summary: By constructing Cu-0-Cu+-NH2 composite interfaces with the assistance of SiO2, the electrochemical CO2 reduction reaction (CO2RR) achieves high Faraday efficiency and current density for C2+ production, improving the productivity of carbon cycle.
JOURNAL OF MATERIALS CHEMISTRY A
(2024)
Article
Chemistry, Applied
Lei Bian, Zi-Yang Zhang, Hao Tian, Na -Na Tian, Zhi Ma, Zhong-Li Wang
Summary: This study demonstrates an efficient CO2RR to ethylene conversion technology and achieves high selectivity by using copper nanoribbons with abundant grain boundaries on balanced gas-liquid diffusion electrodes. The thickness of the catalyst layer is identified as a crucial factor for mass transfer, and the optimized electrode delivers high Faradaic efficiencies towards C2H4 and C2+ products. The abundance of grain boundaries enhances CO2 activation and significantly promotes the formation of CO intermediates, leading to improved production of C2H4 and other C2+ products.
CHINESE JOURNAL OF CATALYSIS
(2023)