Article
Chemistry, Physical
N. Ziani, E. Aubry, N. Martin, L. Hirsinger, A. Billard, P. Briois, M. S. Belkaid, M. Arab Pour Yazdi
Summary: Delafossite CuFeO2 films were synthesized by reactive magnetron sputtering at different substrate temperatures ranging from 380 to 550 degrees C. The films exhibited a rhombohedral structure and showed partial dissociation of the delafossite phase into FCC Cu and Fe3O4 magnetite phases at the highest temperature, as well as changes in preferential orientation and optical properties with temperature.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Yu-Hsu Chang, Haicheng Wang, Ting-Fong Siao, Yuan-Han Lee, Shi-Yun Bai, Ching-Wen Liao, Jie-Kai Zhuang, Te-Wei Chiu, Chun-Hong Kuo
Summary: In this study, CuFeO2 and Mg-doped CuFeO2 powders were synthesized using a novel chemical solution route, and their structural and optical properties, as well as their applications in photodegradation and electrocatalytic reactions, were analyzed. The Mg-doped CuFeO2 powder showed higher carrier concentration and better photodegradation efficiency compared to CuFeO2 powder, attributed to its characteristics.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Materials Science, Ceramics
Shui-Miao Yu, Zong-Yan Zhao
Summary: Using density functional theory calculations, we systematically investigated the doping effects of various dopants at different lattice positions in CuFeO2-based photocatalysts. Our findings showed that Mn replacing Fe and N replacing O were the most readily achievable doping methods under different oxygen conditions. We also discovered that different dopants can generate impurity levels capable of capturing photogenerated charges and promote the separation of photogenerated electron-hole pairs.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Engineering, Electrical & Electronic
Hong-Shun Zheng, Guo-Ying Yao, Zong-Yan Zhao
Summary: In this study, the microstructures and electronic structures of CuFeO2 surfaces were analyzed using density functional theory calculations. It was found that the presence of surface states due to dangling bonds on the outermost surfaces has an impact on the separation and recombination of photogenerated electron-hole pairs. The relaxed (001) surface was found to be the most stable and dominating exposed crystal facet among all considered surfaces.
JOURNAL OF ELECTRONIC MATERIALS
(2022)
Article
Chemistry, Physical
Rui-Ping Li, Bao-Feng Shan, Zong-Yan Zhao
Summary: A series of CuFeO2 hexagonal nanosheets with different grain size were prepared by adjusting the synthesis conditions. The samples all showed a pure 3R-Delafossite phase, the same composition, the same optical absorption features, and the same hexagonal sheet morphology. However, the width and thickness of these nanosheets varied.
APPLIED SURFACE SCIENCE
(2023)
Article
Nanoscience & Nanotechnology
Jong Mok Ok, Sangmoon Yoon, Andrew R. Lupini, Panchapakesan Ganesh, Amanda Huon, Matthew F. Chisholm, Ho Nyung Lee
Summary: Twin domains are common structural defects in epitaxial thin films with mismatched symmetry. Understanding the formation mechanism of these twin domains is crucial for controlling and eliminating defects in thin films. Surface termination of the substrate plays a critical role in determining and controlling the domain structure of epitaxial delafossites, leading to the synthesis of high-quality twin-free thin films.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Rui-Ping Li, Shui-Miao Yu, Zong-Yan Zhao
Summary: This study aims to enhance the photoelectrochemical (PEC) properties of CuFeO2 nanosheets by constructing closely bonded CuFeO2/ CuO heterostructures. Through an optimized fabrication process, the CuFeO2@VO-CuO core-shell architecture showed significantly improved PEC performance, with higher photocurrent density and overall efficiency. The solid atomic-level contact bonding at the CuFeO2@VO-CuO junction and the presence of oxygen vacancies play important roles in achieving efficient separation and transfer of photogenerated electron-hole pairs.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Jianyang Li, Jingqi Tian, Mengting Lu, Chenyu Yang, Huaiguo Xue, Tengfei Jiang
Summary: In this study, a 2D on 2D CuFeO2/Co-LDH heterojunction was prepared, which exhibited enhanced charge separation efficiency due to the interfacial built-in electric field. The optimized CuFeO2/Co-LDH-3 heterojunction showed the highest photocurrent and achieved optimal performance in the photocatalytic selective oxidation of benzyl alcohol.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Fatemah H. Alkallas, Amira Ben Gouider Trabelsi, Tahani A. Alrebdi, Ashour M. Ahmed, Mohamed Rabia
Summary: An optoelectronic device synthesized from a CuFeO2/CuO/Cu nanocomposite obtained through direct combustion of Cu foil coated with Fe2O3 nanomaterials was examined for its chemical, morphological, and optical properties. The nanocomposite showed enhanced optical properties compared to CuO nanomaterials, as evidenced by smaller bandgap values. The device exhibited high light sensitivity and efficiency in a broad optical region, covering UV, Vis, and near IR.
Article
Materials Science, Multidisciplinary
Tsutomu Shinagawa, Wataru Tachibori, Tomoya Nishii, Atsushi Ohtaka
Summary: In this study, low-temperature and short-time hydrothermal formation of delafossite CuFeO2 films with a [1120]-preferred orientation on FTO glass substrates was successfully achieved. Well-crystallized p-type CuFeO2 films with a thickness of approximately 2.1 μm and a bandgap energy of 1.48 eV were obtained. The growth of CuFeO2 under different hydrothermal conditions was investigated.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Lingbo Mao, Swati Mohan, Santosh K. Gupta, Yuanbing Mao
Summary: The study developed CuFeO2 particles demonstrating multifunctional applications through hydrothermal and sol-gel methods, showing excellent catalytic performance. The HCF sample exhibited higher current density and lower overpotential, functioning as a bifunctional catalyst for hydrogen and oxygen evolution reactions, with potential for sensing Rhodamine B.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Chemistry, Physical
Manabu Hagiwara, Masahiko Tato, Daishi Shiojiri, Tsutomu Iida, Shinobu Fujihara
Summary: The combined effect of chemical doping and grain orientation on the thermoelectric properties of CuFeO2 ceramics was investigated. Ni doping was found to effectively enhance the electrical conductivity and reduce the thermal conductivity while maintaining a high Seebeck coefficient. CuFeO2 ceramics with a preferred c-axis orientation and doped with 1 and 3 mol% Ni exhibited an improved dimensionless figure of merit.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Benedikt Klobes, Manuel Angst, Daniela Fenske, Chinmay M. Konnur, Abdelfattah Mahmoud, Moulay Tahar Sougrati
Summary: The magnetic properties and hyperfine interactions of the 2H polymorph of delafossite CuFeO2 were studied using SQUID magnetometry and Mossbauer spectroscopy at low temperatures. An impurity of a-Fe2O3 was detected in the hydrothermally synthesized 2H-CuFeO2 sample, and its contribution to the magnetic properties and hyperfine interactions could be distinguished from the main 2H-CuFeO2 phase. The morphology and optical band gap measurements showed expected results for a hydrothermally synthesized delafossite sample. The magnetic susceptibility of 2H-CuFeO2 exhibited antiferromagnetic transitions at 16 K and 13.5 K or 10 K, indicating modified exchange interactions compared to the 3R polymorph. Mossbauer measurements revealed complex spectral shapes at low temperatures and magnetic relaxations above 20 K.
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Haiwan Xu, Rui Wu, Jia-Ye Zhang, Wenqiao Han, Lang Chen, Xuan Liang, Choon Y. Haw, Piero Mazzolini, Oliver Bierwagen, Dong-Chen Qi, Kelvin H. L. Zhang
Summary: In this study, the electronic structure of CuFeO2 was directly investigated using resonant photoemission spectroscopy and X-ray absorption spectroscopy. It was found that CuFeO2 has an indirect and d-d forbidden band gap of 1.5 eV, and the localized nature of Fe 3d states at the edges of the valence and conduction bands limits carrier mobility.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
D. Prasad, G. Anitha, L. Megalan Leo, Atul Kumar
Summary: Despite advancements in PV physics, PV has not surpassed conventional energy due to cost, toxicity, and stability concerns. This study focuses on CuFeO2 as a potential low-cost, high-efficiency solar cell material, with theoretical modeling and analysis indicating its promising photovoltaic performance.
OPTICAL AND QUANTUM ELECTRONICS
(2023)
Article
Chemistry, Inorganic & Nuclear
Caleb J. Bennett, Helen E. A. Brand, Alexander K. L. Yuen, Maria K. Nicholas, Brendan J. Kennedy
Summary: The temperature dependence of the crystal structure of Potassium Hexaiodoplatinate(IV) between 80 and 500 K is studied. Different crystal structures are observed at different temperatures, including monoclinic, tetragonal, and cubic structures. Accurate determination of the structures of K2PtI6 is important for further theoretical and practical research.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Zhuo Zeng, Jiangfu Zheng, Xiaoming Li, Changzheng Fan, Rongying Zeng, Wenqing Tang
Summary: An efficient method for phosphate removal from wastewater is urgently needed due to the environmental issue caused by excessive phosphorus. In this study, calcium aluminum layered double hydroxides (CaAl-LDHs) and six amino acid intercalated calcium aluminum layered double hydroxides (CaAl-amino acid-LDHs) were prepared and compared for their phosphate adsorption performance. L-Aspartic acid intercalated calcium aluminum layered double hydroxides (CaAl-Asp-LDHs) exhibited the highest phosphate adsorption capacity and faster removal rate compared to CaAl-LDHs. The phosphate adsorption mechanism on CaAl-Asp-LDHs involved electrostatic attraction, hydrogen bonds, complexation, and ion exchange. This environmentally friendly material shows promising potential for efficient phosphate removal from aquatic environments.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Rouzbeh Aghaei Hakkak, Thomas Schleid
Summary: The novel guanidinium hydro-closo-borates with [BnHn]2- (n = 10 and 12) anions were successfully synthesized via direct reaction. The crystal structures exhibit hydrogen bonding interactions and have the potential to facilitate H2 generation.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Liqiang Ma, Pengpeng Wei, Jingfang Li, Liye Liang, Guangming Li
Summary: A novel catalyst, H4PVMo2W9O40@rht-MOF-1, was developed using a one-pot hydrothermal method. It exhibited high efficiency and reusability in esterification reactions.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Liudmila A. Gorelova, Valentiva A. Yukhno, Maria G. Krzhizhanovskaya, Oleg S. Vereshchagin
Summary: Two new Ga-Ge disordered feldspar-related compounds were successfully synthesized using melt crystallization methods. Their stability and thermal expansion properties were studied under high-temperature conditions. The results showed that both compounds are stable within the studied temperature range and exhibit anisotropic thermal expansion.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Seifeddine Bdey, Nesrine Boussadoune, Francois Allard, Jacques Huot, Gabriel Antonius, Noura Fakhar Bourguiba, Pedro Nunez
Summary: The structure of a novel arsenate compound Na3Al3(AsO4)4 has been determined using X-ray diffraction. The crystal exhibits a monoclinic space group with suitable pathways for Na+ ion migration. The accuracy of the structural model was confirmed using various validation tools and density functional theory calculations.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Amit Kumar Atri, Ujwal Manhas, Sumit Singh, Irfan Qadir, Shikha Sharma, Preteek Sharma, Devinder Singh
Summary: This study synthesizes new oxygen deficient triple layered Ruddlesden-Popper (RP) phases via sol-gel method and investigates the effects of Cr3+ doping on their structural, optical, magnetic, and photocatalytic properties. The experimental results demonstrate that Cr3+ doping alters the interactions and leads to excellent photocatalytic performance in some phases.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Dat Le Thanh, Amandine Guiet, Emmanuelle Suard, Romain Berthelot
Summary: In this study, FeNb11O29 powder samples were prepared using a microwave-assisted solid-state synthesis method for the first time. The samples obtained rapidly from submicrometric oxide precursors showed enhanced cycling performance, possibly due to the easier ionic diffusion occurring in the smaller particles.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Raimund Ziegler, Felix R. S. Purtscher, Thomas S. Hofer, Gunter Heymann, Hubert Huppertz
Summary: We have successfully synthesized a new tellurium borate crystal under high-pressure and high-temperature conditions. The crystal structure and theoretical calculations have been thoroughly discussed.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Subhendu Jana, Eric A. Gabilondo, Paul A. Maggard
Summary: This study reports the synthesis and characterization of two previously unknown multinary selenides, Ba8Hf2Se11(Se-2) and Ba9Hf3Se14(Se-2), which display unique structures and optoelectronic properties competitive with existing perovskite-type chalcogenides.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Fei Ruan, Chonggui Lei, Fenglong Zhang, Jinxiao Bao, Fen Zhou, Min Xie, Pengfei Xu, Jianquan Gao
Summary: Studying the diffusion properties of hydrogen is important for designing new proton conductors. In the past, the chemical diffusion coefficient of hydrogen in proton conductors was usually obtained through a manual calculation method, resulting in difficulty in controlling the calculation accuracy. To address this issue, a mathematical algorithm and C language computer program were developed to calculate the chemical diffusion coefficient based on Fick's second law and Romberg numerical integral. The algorithm showed high precision and powerful computing function, and has the potential to replace the manual calculation method in calculating the chemical diffusion coefficient for hydrogen in proton conductors.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Deepika Shanubhogue, Suraj Mangavati, Ashok Rao, Ru-Ting Tsao, Yung-Kang Kuo
Summary: In this study, the effect of Y doping at the Sn-site on the structural, electrical, and low-temperature thermoelectric properties of the Cu2SnSe3 system is investigated. Y-doped compounds Cu2Sn1-xYxSe3 show reduced electrical resistivity, enhanced power factor, and decreased thermal conductivity, resulting in higher ZT values.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Wei Hong, Min Qing, Xun He, Lei Wang, Yu Pu, Qiyu Li, Zhimin He, Qin Dong, Rong Li, Xinglong Gou
Summary: This study developed a simple method to prepare SnS2 nanosheets and assembled them with MXene to form SnS2/MXene. The composite material exhibited abundant active sites, superior electron/ion transfer kinetics, and a unique 2D interlayer structure, resulting in high specific capacity, outstanding rate capability, and excellent cycling stability, with potential applications in LIBs.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Heng-Yu Ruan, Xue-Qian Wu, Tian-Yu Zhang, Yi Yuan, Le Wang, Ya-Pan Wu, Qing-Wen Han, Ruan Chi, Dong-Sheng Li
Summary: Two isostructural metalorganic frameworks (MOFs), CTGU-36-Co and CTGU-36-Ni, were synthesized, and CTGU-36-Ni demonstrated high activity as a molecular electrocatalyst for the methanol oxidation reaction.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)
Article
Chemistry, Inorganic & Nuclear
Rachid Fakhreddine, Ali Ouasri, Abderrahim Aatiq
Summary: This paper reports the synthesis, structure, and spectroscopic studies of three novel metal orthophosphate salts. The structures of these compounds were refined using X-ray powder diffraction data. The infrared and Raman analysis revealed their symmetries and the UV-visible investigation determined their optical properties.
JOURNAL OF SOLID STATE CHEMISTRY
(2024)