Article
Materials Science, Multidisciplinary
Guiqing Huang, Wanneng Ye, Chunxiao Lv, Denys S. Butenko, Chen Yang, Gaolian Zhang, Ping Lu, Yan Xu, Shuchao Zhang, Hongwei Wang, Yukun Zhu, Dongjiang Yang
Summary: In this study, RP modified TiO2 hollow spheres were used for solar-to-hydrogen conversion. The optimal hydrogen production rate was achieved with the TiO2@RP heterostructure under simulated solar light irradiation. The hollow sphere structure and RP light absorber extended light absorption ability, and the heterostructure induced interfacial charge migration facilitated photoinduced charge separation, resulting in enhanced photocatalytic hydrogen production performance.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Applied
Libo Wang, Bicheng Zhu, Bei Cheng, Jianjun Zhang, Liuyang Zhang, Jiaguo Yu
Summary: In-situ growth of ultrathin N-doped graphene on TiO2 hollow spheres can enhance photocatalytic CO2 conversion efficiency. The optimized nanocomposite significantly increases CO2 conversion rates. Experimental results demonstrate that intimate interfacial contact and specific nitrogen sites contribute to improved separation and transport of photogenerated charge carriers.
CHINESE JOURNAL OF CATALYSIS
(2021)
Article
Chemistry, Multidisciplinary
Qiankun Xu, Yaru Li, Wen Ji, Jun Mei, Xianbiao Wang
Summary: Water contamination by toxic Cr(VI) can be solved effectively using a more efficient photocatalytic approach. The interaction between photocatalyst heterostructure is crucial for charge separation, which greatly impacts the photocatalytic efficiency. TiO2 hollow sphere/UiO-66-NH2 (TiO2/UiO-66-NH2) heterostructures were successfully synthesized through an adsorption-induced in-situ solvothermal growth method. The introduction of UiO-66-NH2 significantly enhanced the reduction efficiency of Cr(VI) by TiO2/UiO-66-NH2 heterostructures, reaching 89% after 180 minutes of irradiation, much higher than TiO2 hollow spheres (10%) and UiO-66-NH2 crystals (29%). The TiO2/UiO-66-NH2 heterostructures also displayed good regeneration ability and maintained 70% of Cr(VI) removal capacity after four cycles. The integration of TiO2 and UiO-66-NH2 could form a type-II heterojunction, expanding the absorption range of light and suppressing recombination of photogenerated electrons and holes. This research not only provides a new approach for in-situ solvothermal synthesis of semiconductor@MOFs composites, but also offers a novel photocatalyst for highly efficient removal of Cr(VI) from wastewater.
Article
Materials Science, Multidisciplinary
Li-Juan Sun, Hai-Wei Su, Di-Fa Xu, Le-Le Wang, Hua Tang, Qin-Qin Liu
Summary: This study successfully improved the photocatalytic H-2 production activity by loading Cu-doped TiO2 nanoparticles on carbon hollow spheres as a cocatalyst. The Cu doping minimized charge recombination and enhanced the available photoexcited electrons, while the carbon hollow spheres accelerated charge separation and provided abundant active sites.
Article
Chemistry, Inorganic & Nuclear
B. Usharani, V. Manivannan
Summary: The rGO-TiO2 nanocomposite was synthesized through a hydrothermal method and characterized using various analytical and spectroscopic techniques. The findings indicate that rGO-TiO2 exhibits excellent photocatalytic performance, with the highest degradation efficiency observed under visible light and sunlight.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Materials Science, Ceramics
Tingting Xiong, Yin Ye, Bin Luo, Liping Shen, Dongmei Wang, Meikun Fan, Zhengjun Gong
Summary: The 3D TA-TiO2-GA with network architectures and in situ growth of TiO2 NPs showed excellent photocatalytic performance and reusability in degrading organic contaminants. Mechanistic studies revealed the important roles of adsorption and photocatalysis, with superoxide radical anions and hydroxyl radicals as major reactive oxidative species. This study provides a novel alternative for solar light-driven environmental applications.
CERAMICS INTERNATIONAL
(2021)
Article
Chemistry, Multidisciplinary
Xijuan Li, Hongjuan Zheng, Yulong Wang, Xia Li, Jinsong Liu, Kang Yan, Jing Wang, Kongjun Zhu
Summary: Pure TiO2 and 3% Y-doped TiO2 were prepared through hydrothermal method, and then reduced TiO2 and 3% Y-TiO2 were obtained by thermal conversion treatment. The synergistic effect of Y doping and TiO2 reduction was observed, leading to enhanced photocatalytic performance. The improvement was attributed to expanded light absorption range and reduced charge recombination rates caused by Y doping, as well as the disordered shells filled with oxygen vacancies and Ti3+ resulting from reduction treatment. This discovery provides a new perspective for modifying photocatalytic materials and improving their performance.
Article
Environmental Sciences
Alvin Lim Teik Zheng, Sarah Sabidi, Teruhisa Ohno, Toshinari Maeda, Yoshito Andou
Summary: The study introduces a novel 3D photocatalyst prepared through hydrothermal treatment and freeze-drying, showing enhanced photocatalytic activity for methyl orange degradation and excellent antibacterial activity. The synergistic effect of Cu2O/TiO2 anchored on the CNF/rGH framework plays a key role in improving the performance of the photocatalyst.
Article
Chemistry, Physical
Yuanxu Liu, Mei Wang, Dan Li, Fei Fang, Weixin Huang
Summary: Anatase TiO2 nanosheets with controlled locations of defects were synthesized by adjusting temperatures and amounts of added HF during hydrothermal synthesis. Nanosheets with dominant surface defects showed higher activity in photocatalytic water reduction, demonstrating the promotion effect of surface defects on TiO2 photocatalysis. Surface defects can trap photogenerated charges and activate reactants, facilitating surface reactions and offering a novel strategy to enhance photocatalytic efficiency of TiO2 photocatalysts.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Mingze An, Li Li, Qianqian Wu, Hualiang Yu, Xinyu Gao, Wenlin Zu, Jiahui Guan, Yan Yu
Summary: In this study, a three-dimensional ordered hollow spherical ZnTiO3-ZnO-TiO2 composite modified with CdS quantum dots was successfully prepared, exhibiting a complex crystal structure and chemical composition, which showed high photocatalytic activity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Minmin Han, Biao Guo, Zhengyang Zhang, Xun Hu, Zhonghao Wang
Summary: We prepared Bi4Ti3O12/TiO2 hollow nanocakes via a metal-organic framework (MOF)-derived calcination strategy. The photocatalytic hydrogen generation performance of the nanocakes was enhanced compared to TiO2 hollow nanocakes. The improvement in photocatalytic properties was attributed to the increased specific surface area, as well as the type II heterojunction between Bi4Ti3O12 and TiO2, which enhanced light-harvesting efficiency and suppressed charge carrier recombination.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Chemistry, Physical
Jiabi Li, Xi Wu, Shengwei Liu
Summary: Extensive studies have focused on synthesizing spherical microassemblies with specific surface functionalizations and hollow interiors for various applications. Focusing on the fabrication of fluorinated TiO2 porous hollow microspheres (F-TiO2 PHMs), this review highlights the simplified two-step templating method and template-free method based on the fluoride-mediated self-transformation (FMST) mechanism. The unique superstructures of F-TiO2 PHMs provide advantages for photocatalytic applications by improving light harvesting, mass transfer, and membrane antifouling, while in situ-introduced surface fluorine species enhance adsorption, activation of reactants, and surface trapping of photo-excited electrons and holes.
ACTA PHYSICO-CHIMICA SINICA
(2021)
Article
Chemistry, Applied
Miroslava Filip Edelmannova, Martin Reli, Peter Nadrah, Nejc Rozman, Rudolf Ricka, Andrijana Sever Skapin, Miha Nosan, Urska Lavrencic Stangar, Kamila Koci
Summary: This study aims to investigate the correlation between the structural properties of different TiO2 catalysts and their photocatalytic performance and selectivity in CO2 reduction at different pH levels. Two types of TiO2 catalysts were prepared and extensively characterized using various techniques. The prepared catalysts exhibited higher selectivity in CO2 reduction compared to a commercial P25 catalyst. The TiSG catalyst, which had the lowest portion of hydroxyl oxygen species, showed the highest photoreduction efficiency. The study also explored the effect of pH on the efficiency and selectivity of photocatalytic CO2 reduction, revealing different product distributions in acidic and basic environments.
Article
Nanoscience & Nanotechnology
Bojing Sun, Jiaqi Bu, Yunchen Du, Xiaoyu Chen, Zhenzi Li, Wei Zhou
Summary: The defective ZnIn2S4 nanosheets/mesoporous black TiO2 heterojunction hollow spheres exhibit excellent photocatalytic performance under visible-light irradiation, with the narrow band gap expanding light response and providing more active sites for photocatalytic reaction. This novel heterojunction hollow sphere with high performance has broad application prospects in the energy field.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Dong-Eun Lee, Vidyasagar Devthade, Satyanarayana Moru, Wan-Kuen Jo, Surendar Tonda
Summary: This study demonstrates the efficacy of a magnetically sensitive TiO2 hollow sphere/Fe3O4 core-shell hybrid catalyst for the sunlight-assisted degradation of aqueous antibiotic pollutants. The hybrid catalyst exhibited significantly higher activity than the pure TiO2 hollow sphere catalyst and showed strong optical response properties and charge separation capabilities. The catalyst can be magnetically recovered and reused without significant loss in its activity.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Polymer Science
Pengfei Jie, Jiarui Du, Wei Tan, Jiyu Tang, Feng Zhang, Fengyu Qu
Summary: The study investigates the impact of cross-linking degree on proton-conducting properties by preparing different Schiff-based networks with varying cross-linking degrees and incorporating acid carriers into composites for new proton-conducting hybrid membranes. Results show that the cross-linking degree significantly affects proton conductivity, with H2SO4-incorporated SNW-M displaying the highest proton conductivity among the samples.
JOURNAL OF APPLIED POLYMER SCIENCE
(2021)
Article
Engineering, Chemical
Fang Luo, Jing Wang, Zhikan Yao, Lin Zhang, Huanlin Chen
Summary: The use of a reactable hydrophilic nanofiber substrate prepared by vacuum filtering PDA NPs greatly improves the structural stability of TFC FO membranes and reduces ICP. FO membranes prepared by interfacial polymerization demonstrate high water permeability, low structure parameter, and excellent resistance to heavy metal ions.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Engineering, Environmental
Jing Wang, Li'an Hou, Zhikan Yao, Yonghai Jiang, Beidou Xi, Shiying Ni, Lin Zhang
Summary: In this study, aminated electrospun nanofiber membrane (ENFM) with high Cr(VI) adsorption capacity and regenerability was successfully synthesized and demonstrated to be effective in the remediation of Cr(VI) contaminated soil.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Multidisciplinary
Cuiyuan Liang, Xin Wang, Dexin Yu, Wei Guo, Feng Zhang, Fengyu Qu
Summary: Research on hydrazine detection using the POMOF/CFG structure showed a broad linear range and low detection limit, with good anti-interference capability, stability, and feasibility. Acceptable relative recoveries were obtained in the detection of practical samples.
CHINESE JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Jinghua Di, Ying Lu, Wenwen Wang, Xiuying Wang, Chunling Yu, Jun Zhao, Feng Zhang, Shiping Gao
Summary: In this study, a g-C3N4 thin film with high photocatalytic performance, good recyclability, and cycle stability was successfully prepared. The presence of cyano groups improved the photocatalytic efficiency, leading to efficient degradation of dyes under visible light irradiation.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2021)
Article
Energy & Fuels
Yibo Wang, Xuan Bai, Wenwen Wang, Ying Lu, Feng Zhang, Bin Zhai, Xiuying Wang, Yu Song
Summary: Porous carbons are promising electrode materials for electrical double layer capacitors due to their high surface area and conductivity. A ball milling-assisted method can be used to prepare porous carbons with controlled morphology and graphitization degree, with the amount of FeCl3 center dot 6H(2)O influencing the properties of the porous carbons.
JOURNAL OF ENERGY STORAGE
(2021)
Article
Chemistry, Physical
Pengfei Jie, Xin Wang, Feng Zhang, Chen Wen, Lei Feng, Fengyu Qu, Xiaoqiang Liang
Summary: A series of proton-conductive COF membranes were fabricated in this study, showing high proton conductivity at medium and subzero temperatures. The enhancement of proton conductivity was achieved through multifaceted synergistic effects.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Engineering, Chemical
Lei Jiao, Lida Meng, Kangkang Yan, Jing Wang, Ge Li, Zhikan Yao, Zhilin Sun, Lin Zhang
Summary: This study investigated the membrane wetting issue in vacuum membrane distillation using electrospun nanofiber membranes. The results revealed that wetting was caused by the crystallization of NaCl due to supersaturation, and it was reversible through a proper regeneration strategy, allowing for continuous operation.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Engineering, Chemical
Weiyu Dou, Feng Qi, Yangyang Li, Fangfang Wei, Qitao Hu, Zhikan Yao, Jing Wang, Lin Zhang, Zhe Tang
Summary: In this work, a charge-bias, endotoxin selectively adsorbable and hemocompatible layer was constructed on the nanofibrous surface of polysulfone (PSF) electrospun nanofibrous membrane (ENM). The resulting PEI/PDA@PSF ENM exhibited a high adsorption capacity of endotoxins in plasma and possessed satisfactory anti-plasma protein adhesion property and hemocompatibility.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Jing Dou, Shuo Han, Saisai Lin, Zhifu Qi, Feipeng Huang, Xiangdong Feng, Zhikan Yao, Jing Wang, Lin Zhang
Summary: In this study, a new type of monomer TTSBI was used to fabricate polyarylate (PAT) nanofiltration membranes with quasi-PIMs structure via interfacial polymerization (IP) with three types of acyl chloride. The contorted structure of TTSBI introduced extra microporosity in nanofiltration membranes, and the differential molecular flexibility of the three acyl chlorides enabled tunable size-selectivity. This study provides a new prospect for the fabrication of highly permeable nanofiltration membranes for precise separation.
JOURNAL OF MEMBRANE SCIENCE
(2023)
Article
Engineering, Chemical
Fangfang Wei, Feng Qi, Yangyang Li, Weiyu Dou, Tangye Zeng, Jing Wang, Zhikan Yao, Lin Zhang, Zhe Tang
Summary: In this study, PAN/PEI nanofiber membrane (NFM) with amino-rich and smooth surface structure was prepared through a more facile co-blended electrospun method. PAN/PEI NFMs exhibited a high adsorption capacity of 142.79 mg g-1 for free bilirubin at clinical bilirubin concentration (100 mg L-1) in patients with liver failure. The development of this facile method promotes the feasibility of nanofibrous membranes for the treatment of hyperbilirubinemia with significant implications for improving therapeutic efficacy.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Engineering, Chemical
Jinyan Wang, Jingrun Xing, Ge Li, Zhikan Yao, Zhen Ni, Jing Wang, Songmiao Liang, Zhijun Zhou, Lin Zhang
Summary: Autopsies were conducted on end-of-life RO membranes from four different applications, revealing the characteristics of fouling layers and proposing strategies to extend their lifetime.
Article
Engineering, Environmental
Yukun Qian, Haozheng Li, Jiancong Lu, Dan Lu, Hongyu Jin, Zhiyi Xia, Zhikan Yao, Jing Wang, Lin Zhang, Chuyang Y. Tang
Summary: By regulating the pore size and surface chemical composition of the substrate, the intrusion of polyamide can be effectively inhibited, leading to improved performance of thin film composite polyamide nanofiltration membranes.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Review
Materials Science, Multidisciplinary
Weiyu Dou, Jing Wang, Zhikan Yao, Wei Xiao, Man Huang, Lin Zhang
Summary: Hemoperfusion is an effective adjuvant treatment for severe diseases, providing specific removal of pathogenic factors from the blood of patients. Advances in technology have led to the development of clinical applications, highlighting the need for high-performance devices in the field.
MATERIALS ADVANCES
(2022)
Article
Chemistry, Multidisciplinary
Jing Wang, Li'an Hou, Zhikan Yao, Weiyu Dou, Ge Li, Lin Zhang
Summary: A new sandwich-structured electrospun nanofibrous membrane (ENM) has been developed combining a fluffy layer and a hydrophobic layer to address the issue of pollution from airborne particulate matter (PM). By embedding micro-scale SiO2 particles into the nanofibers to construct a fluffy layer with large pores and spacing, and utilizing a hydrophobic PVDF nanofiber layer to prevent water fouling, the ENM exhibits stable permeability and competitive PM segregation efficiency. This unique structure may be beneficial for producing ENM-based mask filters with antifouling properties for personal protection.
ENVIRONMENTAL SCIENCE-NANO
(2021)
Article
Chemistry, Physical
J. Zamora, T. Bautista, N. S. Portillo-Velez, A. Reyes-Montero, H. Pfeiffer, F. Sanchez-Ochoa, H. A. Lara-Garcia
Summary: Experimental and DFT studies were conducted on the structural, magnetic, and optical properties of RFeO3 perovskites. The perovskites exhibited an orthorhombic crystal structure and weak ferromagnetic behavior. They were confirmed to be semiconductors with a bandgap of approximately 2.1 eV.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xianxiang Lv, Jing Jin, Weiguang Yang
Summary: By depositing TiN and TiO2 surface layers on AlSi films, the electrochemical performance of silicon-based anodes can be significantly improved, suppressing volume expansion and promoting the formation of a stable SEI layer.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Sharafat Ali, Haider Ali, Syedul Hasnain Bakhtiar, Sajjad Ali, Muhammad Zahid, Ahmed Ismail, Pir Muhammad Ismail, Amir Zada, Imran Khan, Huahai Shen, Rizwan Ullah, Habib Khan, Mohamed Bououdina, Xiaoqiang Wu, Fazal Raziq, Liang Qiao
Summary: The construction and optimization of redox-heterojunctions using a bifunctional phosphate as an electron-bridge demonstrated significant improvements in photo catalytic activity, including enhanced dispersion, reduced interfacial migration resistance, and increased abundance of active-sites.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ren-Ni Luan, Na Xu, Chao-Ran Li, Zhi-Jie Zhang, Yu-Sheng Zhang, Jun Nan, Shu-Tao Wang, Yong-Ming Chai, Bin Dong
Summary: Extensive research has revealed that oxygen evolution reaction (OER) in alkaline conditions involves dynamic surface restructuring. The development and design of sulfide/oxide pre-catalysts can reasonably adjust the composition and structure after surface reconstruction, which is crucial for OER. This study utilized a simple two-step hydrothermal method to achieve in situ S leaching and doping, inducing the composition change and structure reconstruction of CoFe oxides. The transformed FeOOH and CoOOH exhibited excellent OER activity and could be easily mass-produced using low-cost iron based materials and simple methods.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jun'an Lai, Daofu Wu, Peng He, Kang An, Yijia Wang, Peng Feng, WeiWei Chen, Zixian Wang, Linfeng Guo, Xiaosheng Tang
Summary: Zero-dimensional organic-inorganic metal halides (OMHs) are gaining attention in the fabrication of light-emitting diodes due to their broad emission band and high photoluminescence quantum yield. This work synthesized a zero-dimensional organic tetraphenylphosphonium bismuth chloride (TBC) that showed efficient blue light emission, with the emission mechanism attributed to the transition of Bi3+ ions. White light-emitting diodes (WLEDs) were fabricated using TBC, along with green-emitting and red-emitting single crystals, achieving single-component white emissions. These findings demonstrate the different emission mechanism of ns2 ions-based OMHs and highlight the potential of bismuth-based OMHs in WLEDs applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xuewei Liang, Yunhai Su, Taisen Yang, Zhiyong Dai, Yingdi Wang, Xingping Yong
Summary: The revolutionary design concept of high-entropy alloys has brought new opportunities and challenges to the development of advanced metal materials. In this work, AlCrCuFe2NiTix high-entropy flux cored wires were prepared by combining the design idea of a high-entropy alloy with the characteristics of flux cored wire. AlCr-CuFe2NiTix high-entropy surfacing alloys were prepared using gas metal arc welding technology. The wear properties of the alloys were analyzed, and the phase composition, microstructure, strengthening mechanism, and wear mechanism were discussed. The results show that the alloys exhibit a dendritic microstructure with BCC/B2 + FCC phases. Increasing Ti content leads to the precipitation of Laves phase. The alloys show improved microhardness and wear resistance due to the precipitation of coherent B2 and Laves phases. However, excessive Ti addition results in the increase of Laves phase and reduced wear resistance of the alloys.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
M. Vadivel, M. Senthil Pandian, P. Ramasamy, Qiang Jing, Bo Liu
Summary: This work presents the enhanced photocatalytic and electrochemical performance of g-C3N4 assisted PAA on CoFe2O4 ternary nanocomposites. The incorporation of PAA and g-C3N4 improves the separation efficiency of photogenerated charge carriers, resulting in superior photocatalytic degradation and high specific capacitance values.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Vibhu T. Sivanandan, Ramany Revathy, Arun S. Prasad
Summary: In this study, pure and doped cobalt ferrite nanoparticles were prepared using the sol-gel auto-combustion method with the aid of lemon juice as eco-fuel. The crystal structure, lattice parameter, crystallite size, microstrain, optical parameters, and room temperature magnetic properties of the samples were analyzed. The effect of doping on the magnetic properties was also investigated.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qing Guo, Bowen Zhang, Benzhe Sun, Yang Qi
Summary: This study prepared ZnO films with various nonpolar preferred orientations using conventional chemical bath deposition method and characterized their growth process and mechanism. It was found that the type and concentration of nitrate could control the preferred orientation and surface roughness of ZnO films. Additionally, ZnO films with different preferred orientations exhibited different optical properties.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Chong Zhang, Yan Liu, Zhaoyan Wang, Hang Yang
Summary: In this study, six bimetallic FeCo particles were synthesized via the hydrothermal method at different Fe:Co ratios. The Fe:Co ratio not only modulates the composition of the particles but also influences their structure and magnetic properties. The FeCo alloys showed a transformation from an Fe-based structure to a Co-based structure with increasing Co content. The Fe:Co ratio of 1:1 and 3:1 resulted in particles with the highest and lowest saturation magnetization, respectively.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Jianning Zhang, Jing Li, Yiren Wang, Xiaodong Mao, Yong Jiang
Summary: We conducted a study on the formation of ultra-fine Y-Ti-Ta-O nano-oxides in Ta+B micro-alloyed 13CrWTi-ODS alloys using electron microscopy and first-principles calculations. The Y-Ti-Ta-O nano-oxides were found to be mainly Y2(Ti,Ta)2O7, with an average size of 7 nm and a number density of 6.8 x 1023 m-3. Excess boron was found to enhance the adhesion of some low-sigma grain boundaries but weaken the Fe/Y2Ti2O7 interface, while excess tantalum enhanced the Fe/Y2Ti2O7 interface but caused serious degradation of grain boundaries.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Yirong Fang, Pei Cheng, Hang Yuan, Hao Zhao, Lishu Zhang
Summary: A new composite system of nitrogen-doped reduced graphene oxide and black phosphorus quantum dots has been developed for tumor therapy, showing improved electrochemical properties and stability. The system generates hydrogen peroxide and hydroxyl radical to effectively kill tumor cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Xiufang Qin, Yuanli Ma, Hui Zhang, Ting Zhang, Fang Wang, Xiaohong Xu
Summary: The structure and magnetism of cobalt ferrites after Mn2+-Tb3+ co-doping were studied. Co-doped samples exhibited cubic spinel structure and spherical shape of ferrite nanoparticles. The redistribution of Co2+ and Fe3+ ions between octahedral and tetrahedral sites was observed due to Mn2+-Tb3+ co-doping. The coercivity and magnetization saturation of co-doped samples were significantly improved, leading to a maximum energy product that is 190% higher than that of the un-doped sample.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Ho Yeon Lee, Wonjong Yu, Yoon Ho Lee
Summary: Recently, there has been an increasing interest in developing ultra-fine nanostructured electrodes with extensive reaction areas to enhance the performance and low-temperature operation of solid oxide fuel cells. The use of a refined approach involving co-sputtering metal alloys and oxide targets has demonstrated the feasibility of nano-columnar structures in perovskite-based electrodes, expanding the temperature range of thin film electrodes. This study systematically examines the effects of chamber pressure control in the co-sputtering process and identifies the intricate relationship between sputtering pressure and film structure. By fine-tuning the columnar growth in the electrode, significant improvements in performance and thermo-mechanical properties were achieved, resulting in high-performance all-sputtered solid oxide fuel cells.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
Article
Chemistry, Physical
Qianyun Bai, Xiaoxiao Yan, Da Liu, Kang Xiang, Xin Tu, Yanhui Guo, Renbing Wu
Summary: This study proposes a simple method to develop a non-precious transition metal-based electrocatalyst with high catalytic activity and robustness for the hydrogen evolution reaction. The as-synthesized electrode exhibits a low overpotential and high current density, indicating its potential in energy conversion.
JOURNAL OF ALLOYS AND COMPOUNDS
(2024)
