Article
Nanoscience & Nanotechnology
Benjamin D. Wiltshire, Mahnaz Alijani, Hanna Sopha, David Pavlinak, Ludek Hromadko, Raul Zazpe, Sitaramanjaneya M. Thalluri, Eva Kolibalova, Jan M. Macak, Mohammad H. Zarifi
Summary: To detect visible light at gigahertz frequencies, a planar microwave resonator was integrated with a high aspect ratio TiO2 nanotube (TNT) layer-sensitized CdS coating using atomic layer deposition (ALD). This integration improved the performance of light detection devices in digital technology. The CdS-coated TNT layer showed sensitivity to visible light up to a wavelength of approximately 650nm, and enhanced sensitivity to green and red light compared to the blank TNT layers. The CdS coating also improved the sensor's response to light exposure and resulted in shorter recovery times.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Ceramics
Shuxu Zhu, Guangshun Wu, Ziqi Liu, Shengzhan Zhao, Dandan Cao, Chenxu Li, Guijing Liu
Summary: Nanoflower-like CdS/SnS2/TiO2 NTs ternary heterojunction photocatalysts were synthesized by hydrothermal method, and the relationship between morphology, microscopic morphology, crystallinity, elemental presence state and hydrogen production performance was investigated. The photocatalytic performance, electrochemical property and hydrogen production capacity were compared with other NTs. The results showed high removal efficiency for MB wastewater and good photocatalytic efficiencies for RhB and Cr(VI) removal. The ESR technique confirmed the active radical groups and investigated the photocatalytic mechanism. Hydrogen production rate achieved 97.14 μmol h(-1) cm(-2), demonstrating a new technique for solar energy conversion.
CERAMICS INTERNATIONAL
(2023)
Article
Chemistry, Multidisciplinary
Ying Tao, Zhong Ma, Wenchao Wang, Chi Zhang, Lanlan Fu, Qiong Zhu, Yanliu Li, Guisheng Li, Dieqing Zhang
Summary: A new semiconductor/cocatalyst, Ni2P sensitized TiO2 nanotube arrays photoanode (Ni2P/TiO2-NTAs), is developed for photoelectrocatalytic urea oxidation reaction (PEC-UOR) with high efficiency. The 1D TiO2-NTAs structure accelerates urea molecules diffusion and promotes CO2 gas release at the electrode interface. Meanwhile, Ni2P is also beneficial to urea molecule absorption and CO2 desorption and enables to lower the energy barrier for amine (N-H) dehydrogenation. Furthermore, the robust interfacial charge transfer pathway between Ni2P and TiO2 interface promotes the separation of photogenerated electrons and holes.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Fatih Tezcan, Abrar Ahmad, Gurbet Yerlikaya, Zia-ur-Rehman, Halime Paksoy, Gulfeza Kardas
Summary: The study investigates the photoelectrocatalytic hydrogen production of CdS quantum dot-sensitized TiO2 nanorod arrays decorated with Ag nanoparticles. The introduction of Ag nanoparticles between TiO2 and CdS QDs improves the electron transport and enhances the photoconversion efficiency. The performance of photoelectrochemical hydrogen production is significantly improved with the optimized structure.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Yong Xu, Weiwei Zhang, Weizhuo Yu, Jianxu Ding, Haiqing Sun
Summary: The study investigated the crystalline phase, morphology, optical property, and photoelectrochemical performance of Pth/TNAs samples, finding that Pth deposition improves light absorption and increases the density of photo-generated charge carriers, while enhancing the inner electric field and electron transfer efficiency, leading to improved photoanode performance.
JOURNAL OF MATERIALS SCIENCE
(2021)
Article
Chemistry, Analytical
Jiawen Wu, Panpan Ou, Yu Lin, Xuecai Tan, Fucun Wei, Yan Mi, Shaogang Liu, Kejing Huang
Summary: This study developed a highly efficient photoelectrochemical sensor for detecting chlorpyrifos in the environment by introducing oxygen vacancies and loading bismuth sulfide nanoparticles. The sensor showed high sensitivity and accuracy, making it suitable for detecting chlorpyrifos in vegetables.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
K. Veerathangam, Mohd Shkir, A. Sundhar, Muthu Senthil Pandian, P. Ramasamy
Summary: CdS quantum dots (QDs) and Ni-doped CdS QDs were deposited on TiO2/FTO substrates using the SILAR method. Among different photoanode solar cell configurations, 4% Ni concentration was found to be optimal for improved optical and photovoltaic properties, leading to an increase in cell efficiency from 0.53% to 1.67%.
Article
Chemistry, Multidisciplinary
Ashokan Gunasekaran, Subramani Sadhasivam, Nallathambi Anbarasan, Kulandaivel Jeganathan
Summary: A ternary heterostructure consisting of CdS/ZnSe sensitized TiO2 nanorod was reported as a photoanode. The heterojunction photoanode significantly increased the photocurrent density and achieved high hydrogen evolution efficiency by widening the spectral absorption range and enhancing the electron transfer properties.
Article
Engineering, Environmental
Jinshan Wang, Ruqian Lian, Si Zhao, Lituo Zheng, Yiyin Huang, Mingdeng Wei, Sanjay Mathur, Zhensheng Hong
Summary: In this study, a method of using 3D spaced TiO2 nanotube arrays as a substrate and controlling the deposition behavior of sodium metal with the absorption-diffusion regulation strategy by uniformly coating ultra-fine metal nanocrystals was proposed. It was found that TiO2 substrate has higher sodiophilic activity and sodium absorption energy, while the diffusion of sodium on silver surface is easier, leading to the formation of a mixed Na-Ag layer. The STNTs-Ag || Na half-cell exhibited high Coulombic efficiency and stable cycling life.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Lijie Duan, Haifeng Zhu, Ming Li, Xingyu Zhao, Yankun Wang, Yaping Zhang, Lianqing Yu
Summary: The study demonstrates that two-dimensional semiconductor MoSeS combined with TiO2 nanotube arrays exhibit highly efficient photocatalytic H-2 generation. The MoSeS/TiO2 heterojunction prepared by one-step atom substitution method shows superior photocatalytic performance compared to the two-step method. The composites not only reduce charge transfer resistance and accelerate carrier transport, but also improve visible light utilization efficiency with an obvious redshift in UV-vis absorption spectra.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Athil Al-Shihabi Al-Ani, Begum Tokay, Wen Zhu, George Z. Chen
Summary: This study reports an underpotential deposition (UPD) route of Cu2ZnSnS4/TiO2 nanotube arrays (TiO2-NTAs) in which Cu2ZnSnS4 was used as a sensitizer to enhance the photoconversion efficiency of TiO2-NTAs. The results showed that sensitizing TiO2-NTAs with Cu2ZnSnS4 significantly improved light absorption, resulting in a two-fold increase in photoconversion efficiency compared to pure TiO2-NTAs. The novel photoanode of CZTS/TiO2 NTAs achieved a maximum hydrogen generation rate of 49 ml h(-1) cm(-2).
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Inorganic & Nuclear
Changhao Yu, Zhibin Zhang, Zhimin Dong, Yutian Xiong, Yingcai Wang, Yuhui Liu, Xiaohong Cao, Wenjie Dong, Mingguang Liu, Yunhai Liu
Summary: CdS/TiO2 heterostructured nanotube arrays composites were successfully synthesized via the SILAR reaction with vacuum freeze-drying-assisted method. The CdS nanoparticles anchored on the TiO2 nanotubes showed excellent photocatalytic activity, achieving a 97% reduction efficiency of U(VI). The unique structure of the composite material not only effectively inhibited photocorrosion, but also promoted the separation of photoinduced electron-hole pairs.
JOURNAL OF SOLID STATE CHEMISTRY
(2021)
Article
Chemistry, Physical
Yuanyuan Kong, Mingxuan Sun, Xiaofang Hong, Ying Wang, Ahmad Umar
Summary: The preparation of a MoS2/CdS/TiO2 nanotube heterostructure enhances visible light response and electron transfer efficiency.
MoS2 coatings significantly improve the photoelectrochemical stability of CdS/TiO2 nanotube arrays.
The heterostructure exhibits promising photoelectrochemical properties for potential applications.
Article
Chemistry, Multidisciplinary
V Srimurugan, C. G. Jothiprakash, R. Prasanth
Summary: A stoichiometrically stable CdS/TiO2 heterostructured electrode was developed for efficient photoelectrochemical conversion, with CdS evenly distributed over TiO2 nanotubes. The electrode exhibited a stable photocurrent density of 3.5 mA cm(-2) and achieved a high H-2 production rate of 1.1 ± 0.03 mmol h(-1) g(-1) without any co-catalysts. The significance of CdS/TiO2 stoichiometry towards efficient hydrogen production was discussed in detail.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Engineering, Electrical & Electronic
Chao-Nan Chen, Yu-Wu Wang, Ying-Rong Ho, Chia-Ming Chang, Wei-Chieh Huang, Jung-Jie Huang
Summary: This study utilized liquid-phase deposition to fabricate a TiO2 film on anodizing TNT, increasing the length and dye adsorption capacity of the nanotubes, ultimately enhancing the photoelectric conversion efficiency of the DSSC device.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(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)