Article
Chemistry, Physical
Omeir Khalid, Alexander Spriewald Luciano, Goran Drazic, Herbert Over
Summary: By growing mixed RuxIr1-xO2 oxide on rutile-TiO2, the composition can be controlled to improve the activity of methane combustion. Even small amounts of iridium in the mixed oxide significantly enhance the activity of methane combustion, while ruthenium plays a role in promoting oxidation steps. Adsorption energy of oxygen may contribute to the variation in apparent activation energy among RuxIr1-xO2.
Article
Chemistry, Physical
Jinghao Huo, Yijie Ren, Guoqiang Zhang, Xiaofei Wang, Shouwu Guo
Summary: In this study, hierarchical TiO2/C nanofibers with anatase/TiO2(B) mixed phases were successfully synthesized by a dual-template method. The TiO2/C anode exhibited high reversible discharge capacity, remarkable rate capacity, and stable sodium storage performance, making it a reliable approach for building superior performance TiO2 anode materials for sodium-ion batteries.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Suriyaprabha Rajendran, Gajendra Kumar Inwati, Virendra Kumar Yadav, Nisha Choudhary, Mitesh B. Solanki, Magda H. Abdellattif, Krishna Kumar Yadav, Neha Gupta, Saiful Islam, Byong-Hun Jeon
Summary: Cleaning wastewater is a serious issue for scientists and researchers, who have been focusing on using nanocatalysts for the removal of noxious pollutants. By manufacturing TiO2 nanoparticles supported by activated carbon using a cost-effective sonochemical method, the catalytic activity was enhanced. The nanocatalysts showed high efficiency in degrading the organic textile dye RO 84, making them potentially valuable for wastewater treatment in various industries.
Article
Multidisciplinary Sciences
Zhikun Hu, Zerui Chen, Qianqian Liu, Wei Zhao, Yifei Xu, Hao Bin Wu
Summary: This study developed compact heterostructured particles with improved Na storage capacity by loading SnO2 nanoparticles into nanoporous TiO2 followed by carbon coating, aiming to increase the energy density of SIBs. The resulting TiO2@SnO2@C particles inherit the structural integrity of TiO2 and have extra capacity contribution from SnO2, delivering a volumetric capacity of 393 mAh cm(-3) notably higher than that of porous TiO2 and commercial hard carbon. The heterogeneous interface between TiO2 and SnO2 promotes charge transfer and facilitates redox reactions in the compact heterogeneous particles. This work demonstrates a useful strategy for electrode materials with high volumetric capacity.
Article
Chemistry, Multidisciplinary
Andrew R. Riscoe, Jinwon Oh, Matteo Cargnello
Summary: Dehydration of alcohols is an important reaction class for the development of fossil-free fuel and chemical industries. Acid catalysts enhance the reactivity and selectivity of alcohols. This study investigates the effects of sulfur treatments on TiO2 surfaces for alcohol dehydration. The results show that sulfur treatments improve the activity and selectivity of TiO2 surfaces, and sulfate species on TiO2 surfaces are identified as active sites for the reaction.
Article
Chemistry, Multidisciplinary
Yong Li, Ming-Qing Zhang, Yan-Fang Liu, Ya-Xun Sun, Qing-Hua Zhao, Tian-Lu Chen, Yuan-Fu Chen, Shi-Feng Wang
Summary: Photocatalytic degradation is a promising technology for pollution control, but the preparation of efficient, low-cost photocatalysts remains a challenge. In this study, a TiO2(B)/TiO2(A) homogeneous heterojunction composite photocatalyst was successfully constructed, which significantly enhanced its photocatalytic degradation performance.
Article
Chemistry, Physical
Huazhen Shen, Zhilei Guo, Wenjie Xia, Xiaowei Zhang, Zhiwei Huang, Huawang Zhao, Xiaomin Wu, Chung-shin Yuan, Guohua Jing
Summary: 0.1% Au single atom-doped Ti4+ defect TiO2 (0.1% Au-Ti1-xO2) showed high photooxidation efficiency of Hg0 with the assistance of Au-(O)4 coordination, which significantly promoted the separation of photogenerated electron-hole pairs. Additionally, 0.1% Au-Ti1-xO2 exhibited remarkable resistance to SO2 and NO by preventing the deposition of nitrates and sulfates.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Antonietta Mancuso, Alessandro Gottuso, Francesco Parrino, Rosaria Anna Picca, Vincenzo Venditto, Olga Sacco, Vincenzo Vaiano
Summary: Cu, Fe, and V oxides supported on N-TiO2 were synthesized and their photocatalytic activities in phenol production were tested. Cu/N-TiO2 showed higher activity and yield compared to Fe/N-TiO2 and V/N-TiO2 due to its strong optical absorption and weak interaction with phenol molecules.
Article
Chemistry, Inorganic & Nuclear
Yubin Liu, Xiaoyang Pan, Wenjie Chen, Xiaojing Zhao
Summary: In this study, Nb-doped TiO2 nanoparticles were successfully synthesized using a facile method and characterized by various techniques. The results showed that the Nb-doped TiO2 exhibited improved lithium-ion storage properties in lithium-ion batteries, which may be attributed to the enhanced conductivity due to Nb doping.
DALTON TRANSACTIONS
(2022)
Article
Materials Science, Multidisciplinary
Hussein O. Badr, Francisco Lagunas, Daniel E. Autrey, Jacob Cope, Takayuki Kono, Takeshi Torita, Robert F. Klie, Yong-Jie Hu, Michel W. Barsoum
Summary: We synthesized 1D TiO2-based nanofilaments by reacting Ti-containing precursors with quaternary ammonium hydroxides at near-ambient conditions. The structure was previously believed to be anatase-based, but we now conclude that it is actually a 1D titania lepidocrocite-based structure. The NFs grow along [100] and tend to self-assemble/stack in two directions. The band gap is not affected by the nature of the cations surrounding the NFs.
Article
Chemistry, Multidisciplinary
Lu Zhang, Xian Luo, Jian-Dong Zhang, Yong-Fu Long, Xin Xue, Ben-Jun Xu
Summary: In this study, Fe-doped TiO2 precursors were prepared and analyzed to investigate the effects of Fe doping on the phase transition of TiO2. Results showed that Fe increased the phase transition temperature from anatase to rutile and accelerated the transformation process. Additionally, the crystal phase transition kinetics of Fe-doped TiO2 was found to follow the JMAK model and was influenced by crystal defects.
Article
Chemistry, Multidisciplinary
Miaogen Chen, Tao Sun, Wan Zhao, Xiuru Yang, Wenya Chang, Xiaoxiao Qian, Qian Yang, Zhi Chen
Summary: 1T-MoS2 is grown in situ on TiO2 nanotubes using a hydrothermal method to form a 1T-MoS2@TNTs composite, showing enhanced photocatalytic performance for tetracycline hydrochloride degradation under visible light. The optimized photocatalytic activity is closely related to the loading amount of 1T-MoS2, where 0.5 wt % 1T-MoS2@TNTs can degrade 57% in 1 hour, the highest efficiency observed experimentally so far. The introduction of 1T-MoS2 is speculated to improve light absorption and charge separation/transport, with identified active species and proposed reaction mechanism.
Article
Chemistry, Multidisciplinary
Nakarin Subjalearndee, Pasinee Panith, Tanaporn Narkbuakaew, Pech Thongkam, Varol Intasanta
Summary: Utilization models of supported electrospun TiO2-ZnWO4 photocatalytic nanofibrous membranes for air and water purifications were developed. The structures of the membrane were characterized by microscopy techniques, revealing the growth of ZnWO4 nanorods. The relaxation process and charge transfer mechanism were proposed, and the membrane showed good performance in decomposing toluene and methylene blue.
Article
Materials Science, Ceramics
Yingguan Xiao, Jiajing Wu, Huiquan Li, Xiang Liu, Qian Li, Ying Zhang, Shunsheng Cao
Summary: In this study, a hollow photocatalyst consisting of anatase and rutile phases (A/R-TiO2) was prepared by in-situ growth of rutile TiO2 on anatase TiO2 hollow microspheres through heat treatment. The A/R-TiO2 hollow photocatalyst exhibited significantly enhanced charge separation efficiency, leading to superior performance in the degradation of pesticide pollutants compared to commercial TiO2 (P25). This structural design provides an effective method for constructing TiO2-based photocatalysts with advanced performance.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Michele Sidoli, Giacomo Magnani, Laura Fornasini, Silvio Scaravonati, Alberto Morenghi, Vincenzo Vezzoni, Danilo Bersani, Giovanni Bertoni, Mattia Gaboardi, Mauro Ricco, Daniele Pontiroli
Summary: This work investigates the performance of novel negative electrodes for Li-ion batteries based on defective graphene synthesized via a scalable thermal exfoliation of graphite oxide and decorated with TiO2 nanoparticles. The synthesized materials were electrochemically tested, and the results showed significant improvement in capacity, reversibility, and high-rate capability, even with the addition of a small amount of graphene.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Inorganic & Nuclear
Elvis Shoko, Yun Dang, Guopeng Han, Benjamin B. Duff, Matthew S. Dyer, Luke M. Daniels, Ruiyong Chen, Frederic Blanc, John B. Claridge, Matthew J. Rosseinsky
Summary: A new polymorph of lithium aluminum pyrophosphate, LiAlP2O7, with a unique three-dimensional framework structure, has been discovered at 973 K. Density functional theory (DFT) calculations show that this new polymorph is the most stable low-temperature structure for this composition among seven known structure types. Although the bulk Li-ion conductivity is low, there are potential avenues for enhancing conductivity through analysis of structure topologies. Promising structure types with favorable Li-site topologies have been identified for possible long-range Li migration.
INORGANIC CHEMISTRY
(2021)
Article
Multidisciplinary Sciences
Andrij Vasylenko, Jacinthe Gamon, Benjamin B. Duff, Vladimir V. Gusev, Luke M. Daniels, Marco Zanella, J. Felix Shin, Paul M. Sharp, Alexandra Morscher, Ruiyong Chen, Alex R. Neale, Laurence J. Hardwick, John B. Claridge, Frederic Blanc, Michael W. Gaultois, Matthew S. Dyer, Matthew J. Rosseinsky
Summary: Machine learning combined with crystal structure prediction can accelerate the discovery of new materials, the selection of elements to combine affects the possible outcomes, researchers make choices based on their understanding of chemical structure and bonding, it is challenging to assimilate a large amount of data to select new chemical varieties.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Guopeng Han, Andrij Vasylenko, Alex R. Neale, Benjamin B. Duff, Ruiyong Chen, Matthew S. Dyer, Yun Dang, Luke M. Daniels, Marco Zanella, Craig M. Robertson, Laurence J. Kershaw Cook, Anna-Lena Hansen, Michael Knapp, Laurence J. Hardwick, Frederic Blanc, John B. Claridge, Matthew J. Rosseinsky
Summary: The newly developed lithium ultraphosphates Li3P5O14 and Li4P6O17 based on extended layers and chains of phosphate exhibit complex structures and high thermodynamic stability, offering a new route to optimize the interplay of conductivity and electrochemical stability required in diverse applications such as cathode coatings for lithium ion batteries.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2021)
Article
Chemistry, Physical
Dingyue Hu, Junyoung Kim, Hongjun Niu, Luke M. Daniels, Troy D. Manning, Ruiyong Chen, Bowen Liu, Richard Feetham, John B. Claridge, Matthew J. Rosseinsky
Summary: This study introduces a novel PCFC cathode material, BSCFW, with excellent electrochemical and protonic properties conducive to PCFC application, showing superior stability and performance compared to current state-of-the-art cathode materials.
JOURNAL OF MATERIALS CHEMISTRY A
(2022)
Article
Chemistry, Physical
Bernhard T. Leube, Christopher M. Collins, Luke M. Daniels, Benjamin B. Duff, Yun Dang, Ruiyong Chen, Michael W. Gaultois, Troy D. Manning, Frederic Blanc, Matthew S. Dyer, John B. Claridge, Matthew J. Rosseinsky
Summary: A tetragonal argyrodite material, Li7Zn0.5SiS6, with more than 7 mobile cations has been successfully synthesized through solid state synthesis and exploration of phase diagram. The crystal structure of Li7Zn0.5SiS6 has been determined and it undergoes a transition from ordered structure to disordered structure at high temperature. The material has multiple types of Li sites and the incorporation of Zn2+ affects the Li distribution. This study expands our understanding of structure-property relationships in argyrodite materials.
CHEMISTRY OF MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Dingyue Hu, Karl Dawson, Marco Zanella, Troy D. Manning, Luke M. Daniels, Nigel D. Browning, B. Layla Mehdi, Yaobin Xu, Houari Amari, J. Felix Shin, Michael J. Pitcher, Ruiyong Chen, Hongjun Niu, Bowen Liu, Matthew Bilton, Junyoung Kim, John B. Claridge, Matthew J. Rosseinsky
Summary: This study reports an oxygen cathode material, BSCFW-xMg, that exhibits excellent electrocatalytic performance through the addition of an optimized amount of Mg to the self-assembled nanocomposite BSCFW. The Mg2+ ions concentrate at the interface of BSCFW, resulting in stressed and compositionally inhomogeneous regions. This interfacial chemistry provides an additional degree of freedom for performance optimization and promotes the durability of alkaline-earth based fuel cell materials.
ADVANCED MATERIALS INTERFACES
(2022)
Review
Chemistry, Multidisciplinary
Ruiyong Chen
Summary: Redox flow batteries have the potential to integrate intermittent renewable energy on a large scale. Recent developments in electrolyte design have overcome the thermodynamic restrictions of aqueous electrolytes, leading to improved energy storage and adaptability to different climates.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Ruiyong Chen, Peng Zhang, Zhenjun Chang, Junfeng Yan, Tobias Kraus
Summary: This study investigates the development of sustainable design strategies for aqueous electrolytes in redox flow batteries using redox-active organic materials. A green spontaneous grafting reaction is observed between a redox-active organic radical and an electrochemically activated structural modifier at room temperature through a simple mixing step. Furthermore, a physical mixing method is utilized to formulate a structured aqueous electrolyte and enables aqueous solubilization of the organic solute beyond the conventional dissolution limit, leading to a record high discharge cell voltage in aqueous non-hybrid flow cell.
Article
Chemistry, Multidisciplinary
Alexandra Morscher, Benjamin B. Duff, Guopeng Han, Luke M. Daniels, Yun Dang, Marco Zanella, Manel Sonni, Ahmad Malik, Matthew S. Dyer, Ruiyong Chen, Frederic Blanc, John B. Claridge, Matthew J. Rosseinsky
Summary: Argyrodite is a key structure type for ion-transporting materials. This study presents a new cubic Li-rich (>6 Li+ per formula unit) oxide argyrodite Li7SiO5Cl that exhibits superior atmospheric stability and stability against Li metal. The ability to control the ionic conductivity through structure and composition is emphasized.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Review
Chemistry, Physical
Ruiyong Chen
Summary: The development of post-vanadium electrolytes using abundant materials with versatile redox chemistries enables cost-effective energy storage and widespread implementation of redox flow batteries (RFBs). Cross-contamination of catholyte/anolyte in membrane-based RFBs has been a technological hurdle toward long-term cyclability, but new materials chemistry and cell chemistry have been demonstrated to tackle this challenge. The use of bipolar redox-active materials and bipolar membranes shows promise in solving the cross-contamination issue.
CURRENT OPINION IN ELECTROCHEMISTRY
(2023)
Article
Chemistry, Physical
Sifan Chen, Haolun Ma, Xiaotong Zhou, Di Jin, Junfeng Yan, Gang Wang, Wu Zhao, Jiangni Yun, Han Zhang, Zhiyong Zhang, Ruiyong Chen
Summary: Metal selenides with heterostructured CoSe2/NiSe2 coupled with sp3 bonded N-doped carbon coating layers and interconnected with sp2 bonded carbon nanotubes are synthesized and exhibit enhanced energy storage properties as an anode material for sodium-and potassium-ion batteries. The design of the heterostructure and the hybridization with carbonaceous materials contribute to the improved performance by boosting internal and external reaction dynamics. The research provides insights into the differential sodium/potassium storage capability of the hybrid.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Zekun Zhou, Zengren Tao, Ruiyong Chen, Zhen Liu, Zhenhang He, Lei Zhong, Xin Li, Guixiang Chen, Peng Zhang
Summary: Solid-state polymer electrolytes (SSPE) with high room-temperature ionic conductivity and good compatibility have been prepared using traditional two-roll milling technology and interface wetting. The resulting electrolytes consist of elastomer matrix and high-mole-loading of LiTFSI salt, exhibiting high room temperature ionic conductivity of 4.6x10(-4) S cm(-1), good electrochemical oxidation stability up to 5.08 V, and improved interface stability. These characteristics are attributed to the formation of continuous ion conductive paths, as supported by structural characterization techniques. In addition, room temperature Li||SSPE||LFP coin cell demonstrates high capacity, long cycle life, and good C-rate compatibility. This study provides a promising solid-state electrolyte that meets the requirements for practical lithium metal batteries.
Article
Chemistry, Physical
Xiaotong Zhou, Haolun Ma, Ruiyong Chen, Junfeng Yan, Gang Wang
Summary: This research presents a unique N-graphene coupling vanadium tetrasulfide aerogel (VS4@NGA) material constructed through a hydrothermal and freeze-dehydration approach, which exhibits competitive zinc storage performance as a binder-free electrode in aqueous Zn-ion batteries (AZIBs). The combined use of VS4 and NGA enhances the energy storage dynamics and electrochemical properties of the composite. Moreover, soft-packaged batteries assembled using the composite aerogel demonstrate its practical application potential in electronic devices.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Hong Cai, Ruiyong Chen, Mounib Bahri, Cara J. Hawkins, Manel Sonni, Luke M. Daniels, Jungwoo Lim, Jae A. Evans, Marco Zanella, Leanne A. H. Jones, Troy D. Manning, Tim D. Veal, Laurence J. Hardwick, Matthew S. Dyer, Nigel D. Browning, John B. Claridge, Matthew J. Rosseinsky
Summary: We successfully synthesized a new spinel-like oxyfluoride Li1.25Ni0.625Mn1.125O3F with significant cation disorder. Its crystal structure was confirmed by combined refinement of X-ray and neutron diffraction data. Li1.25Ni0.625Mn1.125O3F showed capacities of 225mAh/g and 285mAh/g at 25 and 40 degrees C, respectively, by intercalation of additional Li+ into the lattice. Compared to previously reported lithium transition metal disordered rocksalt or spinel-like oxyfluorides, Li1.25Ni0.625Mn1.125O3F exhibited significantly improved cycling stability with high structural integrity.
ACS MATERIALS LETTERS
(2023)
Article
Chemistry, Physical
Ruijie Ye, Dirk Henkensmeier, Ruiyong Chen
SUSTAINABLE ENERGY & FUELS
(2020)
