Article
Materials Science, Multidisciplinary
Yuping Wu, Qianting Wang, Wei Sun, Guanglu Dai, Zongli Xie
Summary: A hierarchical mixed-dimensional heterojunction photocatalyst with highly dispersed nanoparticles and strong bonding was synthesized via a simple one-step hydrothermal method. The cactus-like heterojunction structure improved the absorption efficiency and photocatalytic efficiency by effective separation and transference of the photogenerated carriers.
JOURNAL OF MATERIALS RESEARCH
(2022)
Article
Chemistry, Physical
Wei Lu, Tongtong Gu, Xuedong Jing, Yongan Zhu, Linqun Yu, Shichao Hou, Tingting Pang, Na Lu, Zhenyi Zhang
Summary: By constructing p-type CuO/n-type ZnO heterojunction nanofibers, this study aimed to expand the light absorption range and improve photocatalytic activity. The introduction of Ag nanoparticles further enhanced the photocatalytic performance. The results demonstrated high degradation and disinfection efficiency under simulated sunlight irradiation. This study opens up a new pathway for the rational design of photocatalysts.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Fei Chang, Wenjing Yan, Xiaomeng Wang, Shijie Peng, Sushi Li, Xuefeng Hu
Summary: The study focused on enhancing the removal of environmental hormones through the design and creation of a 3D hierarchical composite Bi4O5Br2MnO2 (MB) with improved photocatalytic degradation of bisphenol A (BPA). The best candidate 0.5 MB showed significantly higher Kapp value and boosted generation of oxidative radicals in a Z-Scheme model. Factors influencing photocatalytic degradation performance were explored, and intermediates detected by GC-MS analysis provided insights into the degradation pathway of these robust composites.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Li Li, Wenjun Cao, Jiahao Yao, Wei Liu, Feng Li, Chunchang Wang
Summary: In this study, BiOCl/NaNbO3 piezoelectric composites with different molar ratios were successfully synthesized by hydrothermal methods. The performance of BiOCl/NaNbO3 composite, especially BN-3, was significantly enhanced compared to pure BiOCl and NaNbO3, showing higher degradation rates for Rhodamine B (RhB). The study further investigated and explained the mechanism of piezocatalysis, photocatalysis, and their synergy effect in BN-3 composite. This research provides valuable insights into the piezo-photocatalytic technique and offers a new strategy for improving the efficiency of piezoelectric composites in environmental pollutant remediation.
Article
Chemistry, Physical
Guan-Chi Lee, Lian-Ming Lyu, Kai-Yuan Hsiao, Yu-Sheng Huang, Tsong-Pyng Perng, Ming-Yen Lu, Lih-Juann Chen
Summary: This study applied a piezo-potential to ZnO/ZnS/MoS2 heterostructures to enhance the separation of photoexcited electrons and holes, resulting in increased production of H2. The heterostructures were synthesized through hydrothermal synthesis, and the H2 production varied with the different mixing ratios of ZnO and MoS2. When a piezopotential was introduced through ultrasonication during the photocatalytic reaction, the rate of H2 production significantly increased due to band tilting and improved charge transfer.
Article
Chemistry, Multidisciplinary
Yanxi Chen, Shenyu Lan, Mingshan Zhu
Summary: A piezoelectric BaTiO3/MoS2 (BTO/MS) heterojunction was constructed to inhibit the recombination of charge carriers, enhance the activation of peroxymonosulfate (PMS), and improve the removal efficiency of antibiotic ornidazole pollutants. The synergistic effect of piezocatalysis and PMS oxidation was observed during the process of ornidazole degradation.
CHINESE CHEMICAL LETTERS
(2021)
Article
Chemistry, Physical
Qing Han, Shiwen Du, Yumin Wang, Ziwu Han, Hongjing Li, Hu Xu, Pengfei Fang
Summary: In this work, few-layered MoSe2 nanosheets were grown vertically on TiO2 nanorods to synthesize a direct Z-scheme heterojunction, exhibiting efficient piezocatalytic and piezo-photocatalytic performance. The MoSe2/TNr heterostructure showed superior piezoelectric degradation efficiency and a piezo-photoelectric synergistic effect. This study broadens the application prospects of piezocatalysis and piezo-photocatalysis in renewable energy harvesting and water purification.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Inorganic & Nuclear
Huaizhi Yang, Yuqi Wan, Qingrong Cheng, Hong Zhou, Zhiquan Pan, Yan Liu
Summary: The escalating problems of extreme climate changes and environmental pollution have spurred the search for green alternatives to conventional fossil fuels and environmentally friendly treatments. Photocatalysis is widely recognized as a promising green tool for addressing the energy crisis and environmental rehabilitation. In this study, CdS materials were prepared via MOFs and combined with CoO to form CdS/CoO heterojunctions. The catalytic ability of the heterojunctions was evaluated through photocatalytic degradation and hydrogen production. The results showed that CdS/CoO heterojunctions can efficiently degrade tetracycline hydrochloride (TC) and enhance hydrogen production compared to CdS alone.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Multidisciplinary
Marziye Modares, Somayeh Alijani, Bahram Nasernejad
Summary: ZnO-CdS composites with different loadings of CdS were synthesized for NOx degradation under visible light. The presence of CdS influenced the morphology and structure of the composites, leading to the formation of needle/flower-like structures. The composites with CdS showed increased surface area and enhanced visible light absorption. Compared to pristine ZnO, the photocatalytic activity of ZnO-CdS composites was higher, with the optimal CdS loading being 15%. The formation of heterojunction structure between CdS and ZnO was responsible for the high photocatalytic performance of the composites.
RESEARCH ON CHEMICAL INTERMEDIATES
(2022)
Article
Chemistry, Physical
Shi Liyan, Ma Zilun, Qu Wenwen, Zhou Wei, Deng Zhongqian, Zhang Hongfei
Summary: Hierarchical nanostructures with solvent-dependent morphologies were synthesized in this study to form Z-scheme Bi2S3/CdS heterojunctions, with BC-DMF exhibiting significant photocatalytic efficiency towards E.coli and S.aureus. This improvement was attributed to increased photocatalytic active centers, enhanced photo-induced carriers separation and transfer, and a suitable Bi2S3/CdS ratio.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Qiqi Huang, Fuxiao Zhu, Feiyan Xiao, Gongliang Zhang, Hongman Hou, Jingran Bi, Shuang Yan, Hongshun Hao
Summary: In recent years, using external mechanical energy to solve environmental pollution problems has become a promising strategy. This study successfully synthesized a series of HKUST-1/g-C3N4 composite materials and investigated their catalytic activity in RhB degradation under visible light irradiation and ultrasonic action. The HKUST-1/g-C3N4 composite with a mass ratio of 1:0.3 exhibited the best RhB degradation performance during the process of piezoelectric photocatalysis.
SOLID STATE SCIENCES
(2023)
Article
Materials Science, Ceramics
Guo-Yi Li, Hong-Di Zhang, Zhao-Jian Li, Hong Gao, Nan Wang, Ru Li, Yun-Ze Long
Summary: ZnO/NiO heterojunction nanofibrous membranes with different Zn/Ni molar ratios were prepared via electrospinning and their photocatalytic degradation of Congo red and antibacterial effects were studied. The results demonstrated the potential applications of these nanofibrous membranes in wastewater remediation.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Yinli Duan, Jing Ma, Jianan Dai, Liangsheng Qiang, Juanqin Xue
Summary: Efficient and low-cost photocatalysts containing Indium hydroxide anchored on zinc oxide with various morphologies were synthesized via a hydrothermal approach. The interaction between In(OH)(3) and ZnO was found to enhance the photocatalytic performance of ZnO. The photodegradation experiments showed that the photocatalytic activity of the In(OH)(3)/ZnO nanocomposites correlated with the material morphology, with the highest MB removal efficiency reaching 90.5%.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Environmental
Rui Huang, Wei Cai, Heng Zhang, Zhenhua Wang, Qin Zhang, Rongli Gao, Gang Chen, Xiaoling Deng, Xiang Lei, Jiling Dong, Xiaoyan Liu, Chunlin Fu
Summary: The superior piezo-photocatalytic performances of KNbO3-based materials were achieved by employing strategies such as heterojunction construction and polarization engineering, which enhanced photo-induced carrier separation and migration. A KNbO3/WO3 type-II heterojunction was created by impregnation-calcination method, exhibiting outstanding piezo-photocatalytic performance. Compared to individual KNbO3 and WO3, the KNbO3/WO3 composite showed better degradation performance for RhB solution under visible light irradiation. The work also confirms the synergistic effects of heterojunction construction, polarization engineering, and ultrasonic vibration in KNbO3/WO3 composite for enhanced piezo-photocatalysis.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Xinran Ding, Jin Shi, Yanfang He, Ying Yang, Yuan Liu, Mingming Chen, Wei Xue, Dawei Cao
Summary: Researchers have reported a bi-piezoelectrics isotype junction between BaTiO3 and CdS that exhibits enhanced photocatalytic activity through a synergistic piezo-photocatalytic effect, resulting in increased light absorption range and suppressed charge recombination.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Engineering, Environmental
Jiaqin He, Xunxun Li, Yaru Wang, Jun Xiao, Yunchong Liu, Hua Li, Najun Li, Qingfeng Xu, Jinghui He, Dongyun Chen, Jianmei Lu
Summary: A facile and eco-friendly strategy was developed to synthesize a series of Au-modified hollow Ni-Mn spinel nanospheres decorated on graphene aerogels (termed Auy-hNixMn3_x/GAz) composite catalysts for deep catalytic oxidation of Volatile organic compounds (VOCs). The introduction of hollow structure led to a larger specific surface area and more accessible active sites. The subsequent cooperation of Au further strengthened the low-temperature reducibility along with more active surface oxygen species.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yibo Zhang, Dongyun Chen, Najun Li, Qingfeng Xu, Hua Li, Jianmei Lu
Summary: Multidimensional hierarchical hollow Co3O4/ZnIn2S4 tubular core-shell heterostructures were prepared by growing ultrathin 2D ZnIn2S4 nanosheets on 1D hollow Co3O4 nanotubes using a solvothermal method. This design not only prevents the self-assembly aggregation of ZnIn2S4 nanosheets, but also broadens their light-absorption range and enhances the utilization of visible light. The p-n heterojunction in the photocatalyst generates an internal electric field, which facilitates the separation and migration of photogenerated charge carriers and effectively suppresses their recombination.
APPLIED SURFACE SCIENCE
(2023)
Article
Engineering, Environmental
Jun Gong, Zheye Zhang, Shibo Xi, Wenjun Wang, Jianmei Lu, Peng Chen
Summary: Interlayer engineering is crucial for enhancing the performance of two-dimensional materials in catalysis. In this study, GQD/Co-MoS2 was successfully synthesized and showed excellent long-term stability and catalytic performance. The outstanding performance can be attributed to the enlarged interlayer spacing and electronic coupling at the van der Waals heterojunctions between GQDs and Co-doped MoS2.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Bingke Xie, Dongyun Chen, Najun Li, Qingfeng Xu, Hua Li, Jianmei Lu
Summary: This study synthesized Cs3Bi2Br9 lead-free perovskite and formed Cs3Bi2Br9/g-C3N4 heterojunctions for photocatalytic removal of NOx, resulting in enhanced NO removal efficiency. The experimental results were consistent with photocurrent and electrochemical impedance spectroscopy data, confirming the mechanism and formation of products. This study provides insights into the potential applications of lead-free perovskite-based heterostructures in the field of photocatalysis.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Rui Ji, Zhuzhu Zhang, Lechen Tian, Liujun Jin, Qingfeng Xu, Jianmei Lu
Summary: A novel BiOI-incorporated NH2-UiO-66 composite photocatalyst was successfully synthesized using a simple preparation method. The photocatalyst exhibited efficient degradation of Bisphenol A and maintained a fast degradation rate under different conditions. The study also investigated the charge transfer pathways and radical species between the heterojunction components, revealing that the heterojunction type of NH2-UiO-66@BiOI was Z-scheme.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Multidisciplinary
Lamei Li, Jiaqi Su, Jianmei Lu, Qi Shao
Summary: This review focuses on the application of Cu-based core-shell catalysts in CO2 reduction. The unique electronic structure and interface environment of the core-shell structure can effectively promote the C-C coupling process. The design of efficient Cu-based core-shell catalysts is of great significance for electrocatalytic CO2 reduction (CO2RR).
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Engineering, Environmental
Yunchong Liu, Xunxun Li, Dongyun Chen, Najun Li, Qingfeng Xu, Hua Li, Jinghui He, Jianmei Lu
Summary: This study presents the first construction of Ce-Co oxide thin-walled nanoboxes, which enhance catalytic performance by activating bulk-phase lattice oxygen and increasing the surface-adsorbed oxygen content, achieving complete catalytic oxidation of toluene.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Lechen Tian, Shiyuan Zhou, Jiaojiao Zhao, Qingfeng Xu, Najun Li, Dongyun Chen, Hua Li, Jinghui He, Jianmei Lu
Summary: In this study, a novel porous organic polymer CaPy was constructed and sulfonate groups were anchored onto its skeleton to obtain three sulfonate-modified polymers CaPy-S1, CaPy-S2, and CaPy-S3. The adsorption capacities of these polymers for methylene blue (MB) and Rhodamine B (RhB) were determined and compared. CaPy-S2 showed the highest adsorption capacity and one of the highest adsorption speeds among the tested polymers.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Physical
Guping Zhang, Xunxun Li, Mengmeng Wang, Xueqing Li, Yaru Wang, Shuting Huang, Dongyun Chen, Najun Li, Qingfeng Xu, Hua Li, Jianmei Lu
Summary: This research constructs a stable p-n heterojunction of 2D/2D Co3O4/ZnIn2S4 with a strong built-in electric field, resulting in a highly efficient visible-light photocatalytic hydrogen generation. The improved photocatalytic performance is attributed to enhanced light absorption, abundant active sites, short charge transport distance, and high separation efficiency of photogenerated carriers. This study provides a new approach for the rational design and manufacturing of highly efficient 2D/2D heterojunction photocatalysts.
Article
Engineering, Environmental
Kai Wang, Yang Sun, Dongyun Chen, Qingfeng Xu, Najun Li, Hua Li, Jianmei Lu
Summary: Bioaugmentation is a promising technology for removing polycyclic aromatic hydrocarbons, but high-efficiency microbial agents are limited. This study developed iron-modified biochar materials with green solvent polyethylene glycol 200 and Fe(NO3)3·9H2O through one-step pyrolysis. The modified biochar showed high microbial immobilization efficiency and improved surface structure. By coupling the effective adsorption of green materials with the biodegradability of microorganisms, the iron-modified biochar microorganism spheres exhibited efficient removal of phenanthrene from aqueous solution and soil.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Chemistry, Physical
Yuanbo Zhou, Xiaowei Shen, Tao Qian, Chenglin Yan, Jianmei Lu
Summary: High-entropy materials, such as high-entropy alloys (HEAs), have attracted great interest due to their high mechanical strength, extraordinary fracture toughness, and corrosion resistance. This systematic review focuses on the rational design and fabrication of nanosized HEAs. It discusses the design principles of matching different elements in HEAs, as well as computation methods for predicting their formation conditions and properties. The review also provides a detailed description of synthesis methods, characterization techniques, and application cases of HEAs, along with the challenges and perspectives in their design and synthesis.
Article
Nanoscience & Nanotechnology
Jinyan Huo, Liujun Jin, Chunchao Chen, Dongyun Chen, Zhichuan Xu, Cecilia Devi Wilfred, Qingfeng Xu, Jianmei Lu
Summary: This study demonstrates the production of sulfur using a sulfide oxidation reaction (SOR) technique, and shows that a NiS-doped cobalt sulfide NiS-CoS-supported NiCo alloy foam can serve as a superior electrocatalyst with high stability. It also reveals the sulfurophobicity feature of the catalyst, preventing electrode corrosion during the SOR process. Additionally, the study unveils the chain-growth mechanism of the SOR.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Xunxun Li, Yaru Wang, Dongyun Chen, Najun Li, Qingfeng Xu, Hua Li, Jinghui He, Jianmei Lu
Summary: A novel hollow highly dispersed Pt/ Copper modified-MnO2 catalyst was fabricated, which exhibited excellent performance attributed to the abundant adsorbed oxygen content, excellent low-temperature reducibility, and the synergistic catalytic effect between the Pt nanoparticles and Cu0.050-MnO2.
GREEN ENERGY & ENVIRONMENT
(2023)
Review
Chemistry, Physical
Yuanbo Zhou, Xiaowei Shen, Tao Qian, Chenglin Yan, Jianmei Lu
Summary: High-entropy materials, especially high-entropy alloys (HEAs) and their derivatives, have received great attention due to their high mechanical strength, exceptional fracture toughness, and corrosion resistance compared to traditional alloys. This review focuses on the rational design and fabrication of nanosized HEAs. It discusses the principles of element matching, formation conditions, and properties prediction, as well as synthesis methods, growing mechanisms, characterization methods, and application cases of HEAs.
Review
Chemistry, Applied
Ya Li, Zhenkang Wang, Haoqing Ji, Lifang Zhang, Tao Qian, Chenglin Yan, Jianmei Lu
Summary: Ammonia is important for fertilizer production and green fuels, but the nitrogen reduction reaction (NRR) towards ammonia faces challenges such as volatility, repeatability, and false-positive results. This review discusses factors that induce false-positive results and proposes methods to eliminate them, establishing a foundation for more accurate ammonia quantification in the NRR research field.
CHINESE JOURNAL OF CATALYSIS
(2023)
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)
