Article
Materials Science, Multidisciplinary
Marwa Ben Manaa, Nuha Wazzan, Abdelmottaleb Ben Lamine
Summary: This paper utilizes a statistical physics theory to analyze the adsorption isotherms of three D-A dyes bearing pyridyl group on TiO2 for dye sensitized solar cells. The results indicate a chemisorption process occurred, and DFT was used to determine the adsorbed modes and electronic structures of the dyes, revealing the system with the highest dye regeneration efficiency.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Materials Science, Multidisciplinary
Fengjuan Miao, Fuchen Chu, Bingcheng Sun, Bairui Tao, Peng Zhang, Yu Zang, Paul K. Chu
Summary: This study presents the design and fabrication of a photoanode composed of Au/SnS/TiO2 sensitized with natural dye for dye-sensitized solar cells (DSSCs). By calcination, a layer of spherical nano-TiO2 is prepared, and a layer of nano-SnS is deposited on the TiO2 photoanode using the continuous ion layer adsorption reaction (SILAR). The sensitized Au nanoparticles exhibit enhanced localized surface plasmon resonance (LSPR) effects and electron trapping ability, resulting in improved electron mobility and reduced electron recombination in the DSSC.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Chun-Hao Chang, Chia-Han Chuang, De-Yang Zhong, Jun-Cheng Lin, Chia-Chi Sung, Chun-Yao Hsu
Summary: This study focused on enhancing the optoelectronic performances of dye sensitized solar cells (DSSC) by mixing acetylacetone, graphene powder and TiO2 mesoporous. The addition of graphene and optimization of parameters led to improvements in efficiency and performance of DSSCs. Using a different substrate material also resulted in increased photovoltaic efficiency.
Article
Materials Science, Multidisciplinary
Bandana Ranamagar, Isaac Abiye, Fasil Abebe
Summary: The Rhodamine-6G derivative Rhd and its metal complexes with aluminum and chromium ions were synthesized and characterized using UV-vis and fluorescence spectroscopy. Dye-sensitized solar cells (DSSCs) were fabricated with Rhd and the metal complexes, and their solar-to-electric power efficiencies were determined through current-density measurements and Electrochemical Impedance Spectroscopy (EIS). The Rhd and Cr3+-sensitized solar cell showed the highest solar to electric power efficiency at 0.16%.
Article
Materials Science, Multidisciplinary
Haoran Yan, Minghan Chen, Wenbo Liu, Peiyun Wang, Menglin Liu, You Liu, Longqiang Ye, Mengmeng Gu
Summary: To enhance the power conversion efficiency (PCE) of dye-sensitized solar cells (DSSCs), niobium oxide and Ti3C2 quantum dots were introduced into the photoanode, resulting in improved photocurrent and efficiency. The DSSC device with the composite photoanode achieved a remarkable PCE of 7.24%, surpassing the standard device's efficiency of 4.60%.
Article
Energy & Fuels
Abdullah Atilgan, Abdullah Yildiz
Summary: The development of novel bilayer photoanodes is crucial for efficient dye-sensitized solar cells. In this study, a homojunction photoanode consisting of undoped and Ni-doped TiO2 layers was prepared. By tuning the location of the doped layer, the photoconversion efficiency was greatly improved. The bilayer structure enhanced light absorption, resulting in increased short circuit current and open-circuit voltage.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Materials Science, Multidisciplinary
Fengjuan Miao, Bingcheng Sun, Bairui Tao, Yanchun Wang, Paul K. Chu
Summary: This paper demonstrates the application of a novel ternary nanocomposite MoS2/Ag/TiO2 photoanode in high efficiency plasma dye sensitive solar cell. The ternary nanocomposite MoS2/Ag/TiO2 was successfully synthesized without any hazardous substances. The addition of MoS2 improves the light absorption ability and electron transfer rate of the photoanode, leading to a significant enhancement in the photoelectric conversion efficiency of the dye sensitive solar cell.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Chemistry, Physical
Amel Nakbi, Mohamed Bouzid, Ismahen Ben Khemis, Fatma Aouaini, Afef Ben Hassen, Yosra Ben Torkia, Abdelmottaleb Ben Lamine
Summary: This study contributes to the understanding of the racemic mixture of caffeine-sucrose molecules and their taste-taste interaction. It utilizes a binary model expression of a non-exclusive competitive extended Hill model, deduced through statistical physics treatment. The findings suggest that sucrose molecules form aggregates and bind to human neuroreceptor taste sites in a non-parallel position, while caffeine molecules bind in a parallel position. The study also derives pore size distribution and adsorption energy distribution of neuroreceptor sites, providing insights into the porosity and energetical homogeneity of taste adsorbent surface.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Physical
Hugo G. Lemos, Rodrigo M. Ronchi, Guilherme R. Portugal, Jessica H. H. Rossato, Gurpreet S. Selopal, David Barba, Everaldo C. Venancio, Federico Rosei, Jeverson T. Arantes, Sydney F. Santos
Summary: Dye-sensitized solar cells (DSSCs) are a promising technology for clean energy conversion. This study focuses on enhancing the efficiency of DSSCs by optimizing charge transport and non-radiative carrier recombination. The introduction of Ti3C2Tx MXene into the photoanode improves electron transport and increases the energy-to-current conversion of DSSCs.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Physical
Wen-Feng Lai, Pei-Ling Chao, Xin-Yu Lin, Yin-Pei Chen, Jih-Hsin Liu, Tz-Feng Lin, Wei-Chou Hsu, Chia-Yi Huang
Summary: In this study, a one-dimensional protrusive TiO2 strip array was fabricated using chemical and physical methods. A porous semiconductor layer was coated on the strip array. The results showed that the DSSC with the TiO2 strip array had a higher energy conversion efficiency, which can be attributed to the large surface area of the protrusive structure and its specific electron transport paths.
Article
Chemistry, Physical
Shanmuganathan Venkatesan, Yun-Yu Chen, Hsisheng Teng, Yuh-Lang Lee
Summary: This study demonstrates a quick dye adsorption process using electrochemical methods, reducing the fabrication time of dye-sensitized solar cells. The electrodes prepared using constant potential methods show high performance in DSSCs with high efficiencies and low dark current densities.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Electrical & Electronic
Alwani Imanah Rafieh, Piyasiri Ekanayake, Hideki Nakajima, Abdul Hanif Mahadi, Masanizan Abu, Muna Fathiah Don, Chee Ming Lim
Summary: Doping calcium and lanthanum into mesoporous TiO2 prevents particle nucleation and growth during high temperature synthesis and calcination, resulting in smaller particle sizes and a reduced band gap of TiO2. This enhances the efficiency of dye-sensitized solar cells (DSSCs) as anodes and increases dye adsorption concentration. Moreover, the presence of calcium and lanthanum dopants in TiO2 nanoparticles is confirmed, and doping with these elements improves overall device efficiency through increased surface area and oxygen vacancies.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Physical
Dariusz Augustowski, Maciej Gala, Pawel Kwasnicki, Jakub Rysz
Summary: This study suggests that removing organic residues from the surface of titanium dioxide (TiO2) nanoparticles using UV ozone cleaning process can significantly reduce the efficiency of dye-sensitized solar cells (DSSC) and boost the power conversion efficiency (PCE) of the prepared devices, mainly due to the increase in short circuit current (Jsc) and slight improvement in open circuit voltage (Voc).
Article
Physics, Multidisciplinary
Yu-Chih Chiang, Chia-Rong Lee, Chia-Yi Huang
Summary: A 90-nm-thick TiO2 grid was fabricated using photolithography, sputtering, and lift-off process. A nanoporous film was deposited on the TiO2 grid, which induced a protrusive structure. Experimental results showed that introducing the TiO2 grid into a dye-sensitized solar cell increased its power conversion efficiency by 25%. This improvement can be attributed to the large surface area and directional electron transport channels of the protrusive structure.
Article
Materials Science, Multidisciplinary
Jagriti Tyagi, Himanshu Gupta, L. P. Purohit
Summary: Different photoanodes were prepared on fluorine-doped tin oxide conductive glass substrate using the doctor blade method, with CdS quantum dots deposited by SILAR. The ZnO/TiO2 photoanode achieved higher efficiency compared to bare TiO2 in the QDSSC, with improved electron transport and overall performance. The IPCE for ZnO/TiO2 electrode was approximately 46%, showing enhanced capabilities for photon-to-current conversion.
Article
Engineering, Environmental
Sarra Wjihi, Fatma Aouaini, Alessandro Erto, Marco Balsamo, Abdelmottaleb Ben Lamine
Summary: The study investigates the CO2 adsorption from simulated flue-gas using three different activated carbons. It shows that micropore volume affects the adsorption capacity, while chemical properties play a secondary role. Advanced models derived from statistical physics are used to interpret the adsorption isotherms and provide insights into the adsorption mechanisms.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Chemistry, Physical
Ismahene Ben Khemis, Kods Oueslati, Mohamed Bouzid, Nesrine Mechi, Sarra Wjihi, Abdelmottaleb Ben Lamine
Summary: This study employs statistical physics to investigate the adsorption of key food odorants onto the human olfactory receptor OR2W1, aiming to gain new insights into the olfaction mechanism. Three models are proposed, with the monolayer model showing good correlation with experimental dose-response curves. Numerical values of fitted parameters are used to characterize receptor binding sites size and interactions between odorants and OR2W1.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Engineering, Environmental
Fatma Dhaouadi, Lotfi Sellaoui, Brenda Chavez-Gonzalez, Hilda Elizabeth Reynel-Avila, Liliana Lizbeth Diaz-Munoz, Didilia Ileana Mendoza-Castillo, Adrian Bonilla-Petriciolet, Eder C. Lima, Juan Carlos Tapia-Picazo, Abdelmottaleb Ben Lamine
Summary: A heterogeneous physical model with two binding sites successfully explained the adsorption of Cd2+, Ni2+, Zn2+, and Cu2+ ions on flamboyant pods functionalized with citric acid, highlighting the crucial roles of specific functional groups in the adsorbent. Adsorption was more effective at high temperatures, suggesting an endothermic process associated with physisorption, making it suitable for treating water pollution by heavy metal ions.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Environmental
Hanjing Xue, Xuemei Wang, Qi Xu, Fatma Dhaouadi, Lotfi Sellaoui, Moaaz K. Seliem, Abdelmottaleb Ben Lamine, Hafedh Belmabrouk, Abdullah Bajahzar, Adrian Bonilla-Petriciolet, Zichao Li, Qun Li
Summary: Activated carbons and MOF-based composites were prepared from ashitaba biomass for the adsorption of methylene blue, and results showed that the surfactant-functionalized activated carbon outperformed other adsorbents with an adsorption capacity exceeding 400 mg/g. This adsorbent shows promising application potential for treating wastewater polluted by dye molecules.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Lotfi Sellaoui, Fatma Dhaouadi, Sonia Taamalli, Hanan Yahya Saeed AlZahrani, Florent Louis, Abderrahman El Bakali, Alessandro Erto, Abdelmottaleb Ben Lamine, Diana Ramos Lima, Eder Claudio Lima, Zhuqi Chen
Summary: The study investigates the adsorption of nicotinamide and propranolol on magnetic-activated carbon, finding that adsorption capacity increases with temperature and propranolol has a higher tendency to form multiple layers. The modeling results suggest that both pharmaceutical compounds adsorb onto the MAC adsorbent via the formation of one or two layers, with propranolol showing a higher tendency for multiple layers. Adsorption energy is estimated to be endothermic, with physical interactions responsible for the adsorption process.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Biochemistry & Molecular Biology
Ismahene Ben Khemis, Abdelmottaleb Ben Lamine
Summary: This research provides a detailed analysis of the adsorption mechanism and energy characteristics of vanillin, ethyl vanillin, coumarin, and quinoline molecules on olfactory receptors, using statistical physics modeling. The findings reveal the different orientations and energy values associated with the adsorption process, shedding light on the molecular-level understanding of olfaction mechanism.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Biochemistry & Molecular Biology
Ismahene Ben Khemis, Abir Sagaama, Noureddine Issaoui, Abdelmottaleb Ben Lamine
Summary: This study investigates the activation of mouse and human olfactory receptors in response to two nitro musk stimuli, musk xylol and musk ketone, shedding light on specific aspects of the olfaction process. By using statistical physics modeling and docking computations, the interaction between the nitro musk molecules and olfactory receptors is characterized, providing insights into the olfactory mechanism. The results demonstrate similarities in receptor-ligand detection processes and confirm the calculated binding affinities in terms of adsorption energies.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Chemistry, Multidisciplinary
Fatma Aouaini, Nadia Bouaziz, Wafa Alfwzan, Noura Khemiri, Zainab Elqahtani, Abdelmottaleb Ben Lamine
Summary: In this paper, the adsorption phenomenon of carbon dioxide on a synthesized zeolite (ZSM-5) is analyzed using statistical physics treatment and a multilayer model. The results show that CO2 adsorption occurs via a non-parallel orientation on the ZSM-5 surface, and the highest adsorption amount is observed for Zn-ZSM-5. The analysis of the adsorption energies confirms that CO2 adsorption on ZSM-5 zeolite is a physical adsorption phenomenon.
APPLIED SCIENCES-BASEL
(2022)
Article
Materials Science, Multidisciplinary
Marwa Ben Manaa, Nuha Wazzan, Abdelmottaleb Ben Lamine
Summary: This paper utilizes a statistical physics theory to analyze the adsorption isotherms of three D-A dyes bearing pyridyl group on TiO2 for dye sensitized solar cells. The results indicate a chemisorption process occurred, and DFT was used to determine the adsorbed modes and electronic structures of the dyes, revealing the system with the highest dye regeneration efficiency.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2021)
Article
Engineering, Environmental
Lotfi Sellaoui, Samia Yahyaoui, Sonia Taamalli, Zainab Srour, Dison Franco, Matias Schadeck Netto, Jordana Georgin, Adrian Bonilla-Petriciolet, Florent Louis, Abderrahman El Bakali, Valerie Fevre-Nollet, Guilherme Luiz Dotto, Alessandro Erto, Abdemottaleb Ben Lamine, Zhuqi Chen
Summary: This study investigates the quaternary adsorption of Cu2+, Co2+, Ni2+, and Ag+ ions on an adsorbent derived from alkaline fusion of wastewater treatment sludge. The study reveals that the adsorption of Cu2+, Co2+, and Ni2+ ions is endothermic, while the adsorption of Ag+ ions is exothermic. In the quaternary system, the adsorption of Ag+ ions is significantly reduced due to the competitive effect of other divalent ions, whereas the adsorption capacities of Cu2+, Co2+, and Ni2+ ions are not significantly affected. There is a notable competitive effect of Cu2+, Co2+, and Ni2+ ions on the adsorption of Ag+ ions. Modelling analysis demonstrates that the adsorption of Cu2+, Co2+, and Ni2+ ions is a multi-ionic process at all tested temperatures, while the adsorption of Ag+ ions is a multi-ionic process only at low temperatures. The statistical physics model confirms that the adsorption energies correspond to physical interactions forces and water molecule adsorption plays a crucial role in removing these trace metals.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Materials Science, Multidisciplinary
Bharath Dyaga, Sasikumar Mayarambakam, Olzhas A. Ibraikulov, Nicolas Zimmermann, Sadiara Fall, Olivier Boyron, Thomas Heiser, Nicolas Leclerc, Nicolas Berton, Bruno Schmaltz
Summary: In this study, two new polymers were synthesized with enhanced backbone planarity and quinoidal character, leading to a decreased bandgap and improved optoelectronic properties.
MATERIALS ADVANCES
(2022)
Article
Chemistry, Multidisciplinary
Fatma Aouaini, Nadia Bouazizi, Maha M. Almoneef, Hanan Al-Ghamdi, Abdelmottaleb Ben Lamine
Summary: By conducting experiments on Ti1.02Cr1.1Mn0.3Fe0.6RE0.03 metals, the study investigated the influence of rare earth elements on hydrogen storage performance, identifying physico-chemical parameters related to the absorption and desorption processes and using a model to explain the complexation mechanism.
Article
Engineering, Environmental
Wouroud Sghaier, Yosra Ben Torkia, Mohamed Bouzid, Abdelmottaleb Ben Lamine
Summary: This paper fits the adsorption isotherms of carbon dioxide on highly porous activated carbon using advanced statistical physics models to interpret the process. Physicochemical parameters were deduced through the best fitting model, showing CO2 molecules forming a single layer on modified activated carbon and mainly binding in a parallel position with adsorption energies reflecting physisorption. The use of the enthalpy function for thermodynamic evaluation in a CO2 adsorption cooling system revealed a coefficient of performance ranging from 0.09 to 0.19 at regeneration temperatures between 303 K and 343 K.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Environmental
Yosra Ben Torkia, Wouroud Sghaier, Nadia Bouaziz, Abdelmottaleb Ben Lamine
Summary: In this study, the toxic Xenon removal by an adsorption process on chabazite was investigated using the grand canonical formalism of statistical physics. The interactions between Xenon atoms and chabazite surface were studied through determined physicochemical parameters. The Ca-CHA sample showed the highest adsorption capacity, and the adsorption energy distributions and pore size distributions provided insights into the physisorbed character and microporous character of the samples, respectively.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Multidisciplinary
Yosra Ben Torkia, Wouroud Sghaier, Mohamed Bouzid, Mohsen Trabelsi, Abdelmottaleb Ben Lamine
Summary: The thermodynamic, energetic, and stereographic parameters controlling acetylene adsorption on exfoliated graphite were determined, with the statistical physics model 2 showing the best correlation. The adsorption of acetylene molecules on the graphite surface was found to be multimolecular. The adsorption energy distributions showed a consistent maximum value while the stereographic parameters evolution with temperature suggested the formation of polyacetylene.
SEPARATION SCIENCE AND TECHNOLOGY
(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)
