Article
Chemistry, Multidisciplinary
Xiaoqian Ai, Shun Yan, Ligang Ma
Summary: In this study, a hierarchical ZnO microsphere precursor was prepared using a hydrothermal method, and a controllable morphology ZnO catalyst was produced through annealing at different temperatures. The catalyst annealed at 400 degrees C showed the best photocatalytic activity for the degradation of dye molecules, and its structure was confirmed to be a 2D cellular network composed of two-dimensional nanosheets through electron microscopy measurements.
Article
Materials Science, Ceramics
Aini Ayuni Mohd Raub, Jumril Yunas, Mohd Ambri Mohamed, Badariah Bais, Azrul Azlan Hamzah, Jaenudin Ridwan, Jamal Kazmi, Muhamad Azuddin Hassan
Summary: Zinc oxide nanorods coated with graphene oxide were synthesized using the spray coating method in order to enhance photocatalytic activity. Through optimization of the synthesis parameters, the researchers were able to achieve successful coating and improve the photodegradation of organic contaminants. Various analytical techniques were employed to analyze the structural and optical properties of the nanorods, confirming the successful coating of graphene oxide. The experimental results demonstrated that the coating of graphene oxide enhanced the photocatalytic activity of the zinc oxide nanorods.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Physical
Banu Esencan Turkaslan, Aziz Kerim Celik, Ayca Dalbeyler, Nicholas Fantuzzi
Summary: Tungsten trioxide/graphene oxide (WO3/GO) nanocomposites were successfully synthesized by in situ and ex situ chemical approaches. The in situ synthesized nanocomposites showed higher photocatalytic efficiency.
Article
Environmental Sciences
Shalini Vishwanathan, Susmita Das
Summary: Hollow spherical MgO-ZnO microstructures were synthesized using glucose-mediated one-pot hydrothermal method, and exhibited highly efficient photocatalytic degradation in the high-energy UV region of natural sunlight.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Inorganic & Nuclear
Adarsh K. Mourya, Rudra P. Singh, Tarun Kumar, Awanti S. Talmale, G. S. Gaikwad, Atul V. Wankhade
Summary: A facile one-pot method was developed to prepare three-dimensional hierarchical nanostructures of ZnO with enhanced photocatalytic activity. The proper selection of template, base, and microwave irradiation conditions allowed good control over their morphologies. The study revealed that the morphology of ZnO particles significantly affected their photocatalytic activity, with ZnO nanorods exhibiting the highest degradation efficiency. The material exhibited excellent durability and reproducibility, making it a promising candidate for photocatalytic applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Yangfan Xu, Yue Han, Ruiyang Zhao, Jishu Han, Lei Wang
Summary: Photocatalytic hydrogen production from water is an important method for addressing energy and environmental issues. CdSe/CaMoO4 microspheres, modified with variable concentrations of CdSe NCs, showed enhanced light absorption ability, larger surface area, lower electrochemical impedance, and longer fluorescence lifetime. The construction of a type-I heterostructure improved the separation of photogenerated electrons and inhibited rapid recombination, resulting in an efficient photocatalytic hydrogen production performance.
Article
Materials Science, Ceramics
Honglei Yuan, Liwei Wang, Liuyang Xu, Qing Han, Huanxia Jia, Xianke Sun
Summary: Bi2Sn2O7-based photocatalysts were synthesized via a hydrothermal route, showing single-phase materials with nanosheet morphology and microsphere structure. They exhibit good photocatalytic activities, with Bi1.92T-b(0.04)Eu(0.04)Sn(2)O(7) having the highest photocatalytic activity among the synthesized materials.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Md Shahadat Hossain, Takeshi Furusawa, Masahide Sato
Summary: ZnO hollow microspheres were successfully prepared using a sucrose-derived carbon template-assisted hydrothermal method. The microspheres showed a shell composed of aggregated ZnO nanoparticles and a hollow interior after decomposition of the sucrose-derived carbon core. Both ZnO hollow microspheres and ZnO nanoparticles exhibited excellent photocatalytic activity for rhodamine blue degradation under UV light, with the hollow microspheres showing 10% higher efficiency due to their nanoporous structure, higher surface area, and easy formation of ·OH radicals.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Chemistry, Multidisciplinary
Yimin Han, Bo Wang, Quanjun Xiang, Wensheng Li
Summary: Bismuth-composed titania hollow microspheres were fabricated using hydrothermally prepared titania hollow microspheres as precursors and Bi(NO3)(3) as the Bi resource. Various characterization methods were used to confirm the successful synthesis of Bi-TiO2 photocatalysts. The addition of bismuth greatly enhanced the visible-light photocatalytic activity of TiO2 hollow microspheres.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Environmental Sciences
N. Elumalai, S. Prabhu, M. Selvaraj, A. Silambarasan, M. Navaneethan, S. Harish, P. Ramu, R. Ramesh
Summary: ZnO hexagonal tube and ZnO/r-GO nanocomposites were synthesized and evaluated for their catalytic activity in the degradation of organic compounds. The nanocomposites showed higher degradation efficiency and photocatalytic activity than the ZnO hexagonal tube, possibly due to enhanced charge transport property. Additionally, the nanocomposites exhibited good chemical stability and could be reused multiple times without significant loss of activity.
Article
Chemistry, Inorganic & Nuclear
Xinyu Liu, Heruo Li, Shuang Gao, Xue Jing, Yulan Ren
Summary: HC/BiOBr/Bi2WO6 microspheres synthesized by solvothermal method exhibit excellent photocatalytic activity, significantly higher than that of single-phase BiOBr or Bi2WO6, and also possess good photostability and recyclability.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Engineering, Environmental
Jiayi Yin, Martina Roso, Carlo Boaretti, Alessandra Lorenzetti, Alessandro Martucci, Michele Modesti
Summary: A PVDF-TiO2 core-shell composite nanofibrous membrane with photocatalytic activity was successfully obtained through microwave-assisted hydrothermal treatment of an electrospun PVDF membrane. The effects of precursor solution acidity, heating temperature, and treatment time on the structure and photocatalytic performance were investigated, showing that an increase in temperature and treatment time resulted in an accumulation of TiO2 on the surface of PVDF NFs.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(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
Chemistry, Inorganic & Nuclear
Xuehua Zhang, Li Zhou, Xiaoyu Tu, Fangren Hu
Summary: Zinc oxide microstructures, including nanorods, nanopillars, and multistage microspheres, were synthesized using a two-step hydrothermal approach. The concentration of the growth solution was adjusted to achieve different microstructures. Characterization using SEM, XRD, and XPS revealed hexagonal wurtzite ZnO structures in all samples. The band gaps of the different microstructures were measured using UV-Vis spectroscopy, and the photocatalytic performance of the samples was evaluated. The M-ZnO samples exhibited the highest photocatalytic efficiency.
Article
Chemistry, Physical
Wenhong Yang, Yujing Dong, Zhipeng Wang, Yuqin Li, Chunhui Dai, Dongwei Ma, Yu Jia, Zhen Yang, Chao Zeng
Summary: The Sn2+ doped MgIn2S4 photocatalysts show significantly enhanced photocatalytic CO2 reduction activity compared to pristine MgIn2S4, with the highest yield achieved at a specific doping level. The theoretical results indicate that Sn doping alters the band structure, reduces band gap, extends light absorption range, and promotes migration of photoinduced carriers, while the experimental results demonstrate the positive role of Sn dopant in enhancing charge separation and transportation, as well as improving CO2 adsorption ability.
JOURNAL OF ALLOYS AND COMPOUNDS
(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)