Article
Engineering, Environmental
Karunamoorthy Saravanakumar, Chang Min Park
Summary: A novel ternary symmetric double Z-scheme LaFeO3/g-C3N4/BiFeO3 (LCB) heterojunction nanocomposite was synthesized using a wet chemical process, showing outstanding photocatalytic performance for ciprofloxacin degradation. The enhanced performance is attributed to improved light absorption capability, effective spatial separation, and prolonged charge carriers lifetime in the double Z-scheme system.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Junze Zhao, Mengxia Ji, Hailong Chen, Yu-Xiang Weng, Jun Zhong, Yingjie Li, Shengyao Wang, Ziran Chen, Jiexiang Xia, Huaming Li
Summary: A novel interfacial C-S bond modulated Z scheme heterojunction photocatalyst is constructed to accelerate the photogenerated electron transfer, leading to enhanced CO2 reduction conversion efficiency. The photocatalytic CO2 conversion to CO yield of the composite is 5 and 4-fold of Bi19S27Br3 and g-C3N4, respectively, without the addition of sacrificial agent or photosensitizer.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2022)
Article
Chemistry, Multidisciplinary
Z. Huang, Q. Zhang, X. Ma, B. Chen, T. Fan, Z. Zhang, S. Zhang, Y. Dong, J. Li, Z. Chen, X. Yi
Summary: In this work, a zero-dimensional/one-dimensional CdS/g-C3N4 Z-scheme heterojunction was constructed to enhance the spatial separation of charge carriers and maintain the strong redox ability of the photogenerated charges for photocatalytic C-N coupling of benzylamine. The CdS/g-C3N4 exhibited a remarkable photocatalytic performance enhancement, achieving a yield of 199.79 mmol, approximately 4.3 times higher than pristine g-C3N4 under visible irradiation for 2 hours. The study also investigated the spatial charge separation and benzylamine conversion mechanisms on the Z-scheme junction. This work provides a promising strategy for the synthesis of high-value-added products through photocatalysis.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Chemistry, Applied
Muhammad Qasim, Maochang Liu, Liejin Guo
Summary: In this study, a P-doped-g-C3N4/Fe2P/red-P ternary composite was constructed through in-situ phosphorization of a Fe2O3@C/g-C3N4 heterojunction. The as-prepared composite exhibited significantly improved photocatalytic activity for pure water splitting under visible light irradiation without the need for noble metal additives. The optimized composite, containing 15 wt% Fe2P, showed the highest activity with a hydrogen production rate 107 and 39 times higher than that of pristine g-C3N4 and P-doped g-C3N4 respectively. Furthermore, this noble-metal-free photocatalyst achieved a solar-to-hydrogen conversion efficiency of about 0.2%.
Article
Environmental Sciences
R. Ranjith, S. Vignesh, Ramalingam Balachandar, S. Suganthi, V. Raj, Subramaniyan Ramasundaram, J. Kalyana Sundar, Mohd Shkir, Tae Hwan Oh
Summary: In this study, a Bi2O3/g-C3N4 nanocomposite with a direct Z-scheme was obtained using a hydrothermal system. The nanocomposite exhibited excellent photocatalytic degradation performance under visible-light exposure, making it a promising candidate for wastewater treatment.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Green & Sustainable Science & Technology
Zhiyong Bao, Mengmeng Xing, Yu Zhou, Jun Lv, Dangyuan Lei, Yong Zhang, Jing Cai, Jiaheng Wang, Zhenjie Sun, Wenjuan Chen, Xiaorong Gan, Xingyu Yang, Qizhen Han, Maofeng Zhang, Jiyan Dai, Yucheng Wu
Summary: The invention of defect-engineering motivated Z-scheme photocatalytic complexes has provided a novel approach to achieve modified visible-light driven photocatalytic performance. By systematically studying the role of the Sn2+/Sn4+ redox couple in the photocatalytic process, it is demonstrated that the deficient Sn2+ reactive sites can facilitate small molecule adsorption and enhance interfacial carrier separation and transfer. This work contributes to a more in-depth exploration of Z-scheme photocatalytic-system construction and the development of defect-engineering approaches with high photocatalysis performance.
ADVANCED SUSTAINABLE SYSTEMS
(2021)
Article
Nanoscience & Nanotechnology
Fangyuan Xing, Chengzhi Wang, Shiqiao Liu, Shaohua Jin, Haibo Jin, Jingbo Li
Summary: The Z-scheme heterojunction is promising in photocatalysis due to its efficient carrier separation and strong photoredox properties. However, regulating charge separation at the nanometric interface remains a challenge. In this study, we used g-C3N4 and MoS2 as models and designed the Mo-N chemical bond to connect the CB of MoS2 and VB of g-C3N4. The Mo-N bond acts as an atomic-level interfacial bridge, facilitating charge carrier migration between g-C3N4 and MoS2. Experiments confirmed that the Mo-N bond and internal electric field greatly enhance photogenerated carrier separation. The optimized photocatalyst exhibits a hydrogen evolution rate 19.6 times higher than pristine bulk C3N4. This study demonstrates the importance of atomic-level interfacial chemical bond design in heterojunctions and provides a new approach for efficient catalytic heterojunction design.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Engineering, Chemical
Meiyang Wang, Han Yu, Pan Wang, Zexu Chi, Zhenzong Zhang, Binbin Dong, Heng Dong, Kai Yu, Hongbing Yu
Summary: The novel Z-scheme ternary heterojunction BVP/GQDs/PCN demonstrated excellent visible light photocatalytic activity and NOR degradation performance, outperforming traditional binary heterojunctions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Anyu Liu, Jianqiang Hu, Jiale He, Xinyue Huang, Na Hu, Yuqin Li, Qingling Huang, Shien Guo, Xin Liu, Zhen Yang, Yong Zhou, Zhigang Zou
Summary: The O-doped g-C3N4/In2S3 hierarchical heterostructures demonstrated a direct Z-scheme mechanism for enhanced photocatalytic activity in reducing Cr(vi) under visible light illumination. The efficient separation of photogenerated electrons and holes, as well as the enhanced responsiveness to visible light, contribute to the improved photocatalytic performance of the hybrids. The optimal OCN/IS hybrid with a mass ratio of 0.9 (OCN/IS-0.9) showed the highest Cr(vi) reduction efficiency with a reaction rate constant significantly higher than pure OCN and pristine IS photocatalysts.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Mengxi Tan, Yuan Ma, Chengye Yu, Qingjie Luan, Junjie Li, Chuanbao Liu, Wenjun Dong, Yanjing Su, Lijie Qiao, Lei Gao, Qipeng Lu, Yang Bai
Summary: The construction of an ultrathin 2D ZnIn2S4/g-C3N4 Z-scheme heterojunction through in-situ growth of ZnIn2S4 on g-C3N4 allows for greatly improved hydrogen evolution performance by carefully regulating the interface structure. The optimized photocatalyst demonstrates significant photocatalytic activity without Pt, attributing to the synergistic effect of abundant active sites, enhanced photoresponse, and valid interfacial charge transfer channels. Spectroscopic analyses and density functional theory (DFT) calculations confirm that the enhanced photocatalytic performance is also due to promoted interfacial charge separation in the 2D Z-scheme heterojunction.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Yuan Guo, Wanqing Liu, Wei Duan, Siyu Wang, Liqun Jia, Guoqing Zhang, Baolin Zhu, Weiping Huang, Shoumin Zhang
Summary: The study successfully constructed Co3O4/g-C3N4 photocatalysts with a Z-scheme charge transfer pathway using an electrostatic interaction-annealing method. The catalyst exhibited superior performance, with 0.5% Co3O4/g-C3N4 showing the optimal activity. Addition of 0.5% Pt as a co-catalyst maintained the original catalytic performance of the catalyst.
Article
Chemistry, Physical
Giovanni Di Liberto, Sergio Tosoni, Gianfranco Pacchioni
Summary: Composite materials formed by titania and graphitic C3N4, such as C3N4/TiO2 and C3N4/SrTiO3/TiO2 heterojunctions, have attracted significant interest as efficient photocatalysts. The different behavior of the two heterojunctions can be rationalized based on density functional theory calculations, showing a reversal in the interface dipole and junction nature in the ternary system.
CATALYSIS SCIENCE & TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Hao Wu, Fanming Meng, Xingbing Liu, Bo Yu
Summary: In this study, Z-scheme Bi2MoO6/CNTs/g-C3N4 composite photocatalysts were prepared using a simple hydrothermal method. The characterization of the composite photocatalysts was conducted through various analyses. The results showed that CNTs acted as excellent charge transfer bridges, enabling a formation of a Z-scheme charge transfer mechanism between Bi2MoO6 and g-C3N4. This process effectively isolated electrons and holes and prolonged the lifetime of electron-hole pairs, leading to a substantial improvement in the photocatalytic performance of the composite photocatalyst.
Article
Materials Science, Ceramics
Hideyuki Katsumata, Md Ashraful Islam Molla, Jahida Binte Islam, Ikki Tateishi, Mai Furukawa, Satoshi Kaneco
Summary: Researchers have successfully synthesized a ternary composite photocatalyst with high catalytic activity for the fast degradation of organic pollutants under visible light.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Yan Li, Chengsi Pan, Guangli Wang, Yan Leng, Pingping Jiang, Yuming Dong, Yongfa Zhu
Summary: This paper accelerates charge separation and promotes the reaction by in situ construction of Z-scheme heterojunctions, thus improving the conversion rate of benzyl alcohol. The preparation method, reaction mechanism, and energy level structure of the photocatalyst play a guiding role in organic conversion reactions.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Chemistry, Physical
Jianfei Zhu, Yanfang He, Ying Yang, Yuan Liu, Mingming Chen, Dawei Cao
Summary: The construction of BiFeO3/Cu2O heterojunction on the surface of BiFeO3 significantly improved the photocurrent density and photoelectrochemical performance, providing a promising strategy for developing high-efficiency PEC electrodes.
Article
Engineering, Electrical & Electronic
Yanfang He, Peng Shen, Yuan Liu, Mingming Chen, Dawei Cao, Xiaohong Yan
Summary: The designed photoelectrode based on ferroelectric PZT film and surface decoration of discontinuous CdS nanoparticles enhances PEC water splitting performance by improving charge separation and transfer efficiency, as well as optimizing light absorption capabilities.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Chemistry, Physical
Mingming Chen, Shuaiheng Yang, Youwen Yuan, Xuemin Shen, Yuan Liu, Quan Wang, Dawei Cao, Chunxiang Xu
Summary: Research on Cs4PbBr6 perovskites reveals that the efficient green emission is related to parasitic CsPbBr3 nanocrystals, with the peak of photoluminescence shifting towards blue and broadening as the temperature increases. Additionally, thermal quenching and anti-quenching phenomena associated with CsPbBr3 nanocrystal surface defect states were observed.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Biochemistry & Molecular Biology
Nasori Nasori, Dawei Cao, Zhijie Wang, Ulya Farahdina, Agus Rubiyanto, Yong Lei
Summary: The fabrication of the n-type CuWO4 nanorod arrays photoanode with distinct gaps between the nanorods was successfully achieved through electrochemical deposition using anodic aluminum oxide (AAO) control templates. The gaps helped optimize electrolyte penetration, expanding current density and peak quantum efficiency, indicating a promising structure to enhance the performance of the PEC water splitting procedure as a sustainable energy source.
Article
Physics, Applied
Shuaiheng Yang, Mingming Chen, Xuemin Shen, Youwen Yuan, Yuan Liu, Quan Wang, Dawei Cao
Summary: This work presents self-powered narrowband visible-light photodetectors based on organolead halide perovskite CH3NH3PbBr3 (MAPbBr(3))/p-Si heterojunctions. The high crystalline quality of the MAPbBr(3) microcrystals leads to a device with high on-off ratio, narrow photosensitivity spectrum, and fast photoresponse speed. The mechanism of narrowband photodetection is attributed to the self-filtering effect caused by the thick MAPbBr(3) microcrystals, providing valuable strategies for future photodetector fabrication.
APPLIED PHYSICS LETTERS
(2021)
Article
Nanoscience & Nanotechnology
Yuanzhen Du, Dawei Cao, Yuan Liu, Quan Wang
Summary: In this study, PVDF/EEG films were prepared using electrochemical exfoliated graphite, showing high dielectric constant and tensile strength without the need for specific conditions. Particularly, the film with 2.6 wt% EEG content exhibited excellent performance.
Article
Chemistry, Inorganic & Nuclear
Yanfang He, Xinran Ding, Ying Yang, Yuan Liu, Mingming Chen, Yin Yin, Dawei Cao, Xiaohong Yan
Summary: By optimizing the heteroband junction and introducing piezoelectric polarization into the photoelectrode through a unique macroporous 3D network structure, the PEC water splitting activity was significantly enhanced, resulting in a 12.2-fold increase in photocurrent density.
INORGANIC CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Xinran Ding, Tong Chen, Yanfang He, Jianfei Zhu, Ying Yang, Jie Chen, Nasori Nasori, Yuan Liu, Mingming Chen, Dawei Cao
Summary: Insufficient reduction capability and scanty active substance limit the application of LaFeO3 (LFO) in PEC water splitting. By coating LFO with Nafion, a strong electronic coupling is established, resulting in improved PEC performance and a 30 mV downward shift of flat band potential, leading to a stronger photogenerated electron reduction ability. This study demonstrates the potential of organic materials in modifying semiconductor photoelectrodes for accelerating charge kinetics.
Article
Chemistry, Physical
Yuanyuan Qian, Furui Tan, Jun Liu, Qicong Li, Kuankuan Ren, Yanbin Huang, Xiaobao Li, Dawei Cao, Kong Liu, Chao Zhao, Yongxin Li, Zhijie Wang, Shengchun Qu
Summary: The study reveals that even single Au nanowires not in contact with semiconductors can still exhibit prominent photocatalytic water oxidation reactions, indicating the significant role of hot holes near the d-band of plasmonic nanomaterials in these reactions.
Article
Chemistry, Multidisciplinary
Xuemin Shen, Shuaiheng Yang, Mingming Chen, Jiayun Su, Jing Cai, Peiyu Cheng, Yuan Liu, Quan Wang, Dawei Cao
Summary: This study demonstrates self-powered narrowband visible-light photodetection in LHP CH3NH3PbBr3/p-Si heterojunctions, and enhances the photodetection performance by introducing an Al2O3 thin interlayer.
ADVANCED MATERIALS INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Nasori Nasori, Ulya Farahdina, Vinda Zakiyatuz Zulfa, Miftakhul Firdhaus, Ihwanul Aziz, Darsono Darsono, Dawei Cao, Zhijie Wang, Endarko Endarko, Agus Rubiyanto
Summary: The study successfully developed silver thin films and silver nanosquare arrays for cancer prognosis monitoring, with nanosquare arrays showing varying electric field distributions based on diameter and wavelength. Sensitivity values differed among the silver electrodes deposited using different methods in detecting concentrations.
Article
Physics, Condensed Matter
Dawei Cao, Ming Li, Jianfei Zhu, Yanfang He, Tong Chen, Yuan Liu, Mingming Chen, Ying Yang
Summary: The study utilized a sol-gel method to prepare BiFeO3 ferroelectric thin films with FTO and FTO/Au substrates, improving carrier separation efficiency through ferroelectric polarization electric field and Au buffer layer, resulting in enhanced PEC performance of the photoelectrode.
JOURNAL OF SEMICONDUCTORS
(2021)
Article
Chemistry, Physical
Mingming Chen, Xuemin Shen, Chen Zhou, Dawei Cao, Wei Xue
Summary: A high-performance self-powered UV photodetector based on ferroelectric PZT thin films has been fabricated, simplifying device structure and fabrication process. The unique bulk photovoltaic effect of ferroelectric materials can enhance device performance compared to complex device structures. Additionally, the self-powered photocurrent is further enhanced when downward polarizing the PZT thin film.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Optics
Ying Yang, Zhengwei Zuo, Dawei Cao
Summary: In this study, a stable topologically nontrivial biphoton state with high quantum entanglement is generated in a quadratic nonlinear waveguide array using the bosonic Bogoliubov Hamiltonian under the Su-Schrieffer-Heeger model. The topological robustness and high Renyi entanglement entropy of this state indicate promising applications in quantum computing and information.
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)