Article
Chemistry, Multidisciplinary
Long Wang, Yuehua Kong, Yuanxing Fang, Pingru Cai, Wei Lin, Xinchen Wang
Summary: The study presents a rational design of an NTO-based photocatalytic system, achieving photocatalytic overall water splitting under both ultraviolet and visible light, paving the way for maximizing solar energy harvesting.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Inorganic & Nuclear
Jiu-Lin Zhou, Xin-Ying Xiang, Ling-Tong Xu, Ji-Lei Wang, Si-Man Li, Ya-Ting Yu, Hua Mei, Yan Xu
Summary: Two polyoxometalate (POM)-based hybrid compounds, [K(H2O)(2)(Fe0.33Co0.67)-Co-II(H2O)(2)(DAPSC)](2){[(Fe0.33Co0.67)-Co-II(H2O)(DAPSC)(2)[(Na2Fe4P4W32O120)-P-III]}center dot 21.5H(2)O (1) and [Na(H2O)(2)(Fe0.33Mn0.67)-Mn-II(H2O)(2)(DAPSC)](2) {[(Fe0.33Mn0.67)-Mn-II(H2O)(DAPSC)](2)[(Fe0.33Mn0.67)-Mn-II(H2O)(4)](2)[(Na2Fe4P4W32O120)-P-III(H2O)(2)]}center dot 24H(2)O (2), have been successfully designed and constructed by the hydrothermal method. By utilizing strongly reducing {P2W12} units and bimetal-doped centers, the CO2 photoreduction catalytic capacity of 1 and 2 was improved. The photocatalytic performance of 1 was significantly better than that of 2, exhibiting high CO selectivity and generation rate. 1 was also found to be a highly efficient CO2 photoreduction catalyst even after several recycling cycles.
DALTON TRANSACTIONS
(2023)
Article
Chemistry, Physical
Zhenhua Pan, Qi Xiao, Shanshan Chen, Zheng Wang, Lihua Lin, Mamiko Nakabayashi, Naoya Shibata, Tsuyoshi Takata, Takashi Hisatomi, Kazunari Domen
Summary: In this study, Ga-doped La5Ti2Cu0.9Ag0.1O7S5 particles approximately 2 μm in length were prepared by thermal sulfidation, and their photocatalytic performance was improved by enhancing H-2 evolution activity and apparent quantum efficiency.
JOURNAL OF CATALYSIS
(2021)
Article
Engineering, Electrical & Electronic
Naba Khaliq, Ismat Bibi, Farzana Majid, Misbah Sultan, Mongi Amami, Munawar Iqbal
Summary: The effects of zinc and manganese substitution on the electrochemical, dielectric, and photocatalytic properties of barium hexaferrite nanoparticles were investigated. Doping led to a decrease in band gap values, indicating potential for optical and catalytic applications. The results suggest that the properties of BaFe12O19 can be tailored through Zn and Mn doping for photocatalytic applications.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Environmental Sciences
Bingrui Ma, Naling Yu, Shuaishuai Xin, Yanjun Xin, Chunlei Zhang, Xiaoming Ma, Mengchun Gao
Summary: The g-C3N4/TNAs photoelectrodes exhibit excellent visible-light response, efficient charges separation, and high redox potentials of electron/hole, which are favorable for p-CNB degradation. The simultaneous roles of reductive electrons and oxidized species, as well as the dependency on photo-generated holes and center dot OH for mineralization, were crucial during the dechlorination process. The Z-scheme g-C3N4/TNAs provided an efficient approach for simultaneous dechlorination and mineralization of refractory pollutants.
Article
Environmental Sciences
Ch Venkata Reddy, Raghava Reddy Kakarla, Bai Cheolho, Jaesool Shim, Mashallah Rezakazemi, Tejraj M. Aminabhavi
Summary: In this study, pure and transition metal ions (Cu)-doped V2O5 nanosheets were synthesized and investigated as photocatalysts for the degradation of organic pollutants. The doped nanosheets showed improved efficiency for degrading methyl blue and rhodamine B under visible light. The incorporation of Cu dopant ions improved catalytic efficacy by separating charge carriers and facilitating their movement. The smaller crystalline size and increased specific surface area of the doped nanosheets also enhanced their photocatalytic activity.
Article
Chemistry, Physical
Imane Aadnan, Omar Zegaoui, Abderrahim El Mragui, Ikram Daou, Hamou Moussout, Joaquim C. G. Esteves da Silva
Summary: Doping ZnO nanoparticles with manganese ions improves the ZnO photosensitization to the visible region and enhances charge carrier separation. The physico-chemical properties of Mn-ZnO nanomaterials depend on the amount of manganese. The substitution of Zn2+ with Mn2+/Mn3+ in the lattice of ZnO enhances the photocatalytic activity. The sample with 10 wt% manganese exhibits the best photocatalytic performance in degrading methyl orange under visible light.
Article
Environmental Sciences
G. Rajesh, P. Senthil Kumar, S. Akilandeswari, Gayathri Rangasamy, S. Lohita, V. Uma Shankar, M. Ramya, K. Nirmala, K. Thirumalai
Summary: Worldwide environmental issues have become increasingly crucial due to the growth of the global economy. To tackle these problems, an eco-friendly and sustainable binary catalyst for Azo dye degradation is required. In this study, magnetically reusable, multifunctional Mn-doped CdAl2O4 nanoparticles were fabricated and effectively used for the degradation of Azo dyes. The Mn (0.050 M)-doped CdAl2O4 catalyst exhibited improved photocatalytic capability and could be recycled without significant loss, making it suitable for both industrial and domestic wastewater treatment.
Article
Chemistry, Physical
Jingjing Xu, Yue Liu, Mindong Chen
Summary: Cd-doped Bi2MoO6 photocatalyst was designed and applied for ofloxacin removal under visible-light irradiation, showing significantly improved photocatalytic performance. The doping level had a significant influence on the photocatalytic activity, with 1% Cd-doped Bi2MoO6 exhibiting the best performance. Scavenging measurements revealed holes and O-2(-) as major oxidative groups, while pH and humic acid were evaluated as water matrix factors affecting photodegradation efficiency. This study provides insights for developing highly efficient photocatalytic systems for purifying pollutants in natural water bodies.
SURFACES AND INTERFACES
(2021)
Article
Engineering, Electrical & Electronic
M. Sabarinathan, Y. Hayakawa, S. Harish
Summary: Layered 2D molybdenum disulfide (MoS2) and Ce-doped MoS2 nanostructures were synthesized by the hydrothermal method. Ce-doped MoS2 exhibited enhanced degradation efficiency against methylene blue (MB) under visible light irradiation. The introduction of Ce ions effectively suppressed the generation of electron-hole pairs, leading to improved degradation efficiency.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Irshad Ahmad, Shazia Shukrullah, Muhammad Yasin Naz, Muhammad Athar Rasheed, Mukhtar Ahmad, Ejaz Ahmed, Muhammad Shoaib Akhtar, N. R. Khalid, Abid Hussain, Sadia Khalid
Summary: Decorating carbon nanotubes onto Sr doped ZnO nanoparticles resulted in a highly efficient photocatalyst for hydrogen evolution under visible light illumination. The improved hydrogen evolution activity of Sr doped ZnO/CNTs is attributed to high surface area, Sr doping, and construction of heterojunction, extending light absorption and improving charge separation. The proposed photocatalytic mechanism is based on Mott-Schottky study, explaining the interfacial charge transfer process from ZnO to CNTs and Sr.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Muzaffar Iqbal, Aliya Ibrar, Ashraf Ali, Shabeeb Hussain, Salma Shad, Sami Ullah, Thamraa Alshahrani, Jabir Hakami, Firoz Khan, Khalid Hussain Thebo
Summary: This study successfully synthesized Mn doped Bi2S3 nanoflowers using a simple hydrothermal method and investigated their physicochemical properties and morphology. The 3% Mn doped Bi2S3 nanostructure exhibited superior photodegradation performance and the photocatalysis degradation mechanism was studied in detail. This work provides a new direction for the development of highly efficient photocatalysts to solve water pollution issues.
JOURNAL OF MOLECULAR STRUCTURE
(2022)
Article
Materials Science, Multidisciplinary
Lijuan Tan, Yujia Tong, Yixiao Yang, Xiaohui Ju, Weixing Li
Summary: A novel Mn-Ce bimetallic-modified g-C3N4-based photocatalyst was synthesized and found to be effective and stable in degrading antibiotic contaminants under the activation of persulfate and visible light.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
I. Neelakanta Reddy, Adem Sreedhar, V Manjunath, Jaesool Shim, Jin-Seo Noh
Summary: Doping concept was used to enhance the water splitting activity of the g-C3N4 nanostructure, particularly through the controllable incorporation of Sr leading to improved photoelectrochemical performance. The improvement was attributed to the evolution in structural, morphological, and optical properties, as well as the synergistic effects of extended light absorption, enhanced charge carrier generation and transportation, and development of additional active sites.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Chemistry, Multidisciplinary
Yumatorn Mingmongkol, Assadang Polnok, Patcharaporn Phuinthiang, Duangdao Channei, Khakhanang Ratananikom, Auppatham Nakaruk, Wilawan Khanitchaidecha
Summary: In this study, the photocatalytic degradation of salbutamol under visible irradiation using Mn-doped TiO2 nanoparticles was investigated. The Mn-doped TiO2 nanoparticles were synthesized with different doping levels and their characteristics were analyzed. The results showed that 0.2% Mn-doped TiO2 had the narrowest band gap energy and highest salbutamol removal efficiency. The degradation pathways of salbutamol were proposed based on high-performance liquid chromatography-mass spectrometry analysis.
Article
Materials Science, Multidisciplinary
Sheng-Po Chang, Tzu-Hsin Chen, Guan-Yuan Liou, Wei-Lun Huang, Wei-Chih Lai, Shoou-Jinn Chang, Jone F. Chen
Summary: The research revealed that the dark current of MoS2 photodetectors increases with the number of layers, with the three-layer detector exhibiting the highest response. In terms of MoS2 EGFET pH sensors, FSS performed better on Si substrate with 200 nm SiO2. Time-dependent response measurements showed that the two-layer MoS2 EGFET pH sensors had fast and stable response, indicating good reliability.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Chun-Yu Li, Chi-Ching Liu, Wei-Chih Lai, Yung-Chiang Lan, Yun-Chorng Chang
Summary: The study demonstrates the ability to exclude thermal effects and detect non-thermal hot carriers generated by surface plasmons using an AlGaN/GaN transistor. This ultra-sensitive platform shows at least two orders of magnitude more sensitivity compared to previous reports, offering a new way to optimize plasmonic nanoantenna design in various applications.
Article
Chemistry, Multidisciplinary
Wei-Lun Huang, Yong-Zhe Lin, Sheng-Po Chang, Wei-Chih Lai, Shoou-Jinn Chang
Summary: This study enhances the performance and stability of RRAM by designing a stacked InxGa1-xO structure as its switching layer and adjusting the concentration of oxygen vacancies through different compositions of elements.
Article
Materials Science, Multidisciplinary
Sheng-Po Chang, Wei-Lun Huang, Liang-Wei Huang, Sheng-Ying Pan, Wei-Chih Lai, Shoou-Jinn Chang
Summary: By inserting Al0.05Ga0.95O and In0.9Ga0.1O layers into the resistance-switching layer of the RRAM cell, the on/off ratio can be increased and the reset voltage can be reduced, effectively reducing power consumption.
ECS JOURNAL OF SOLID STATE SCIENCE AND TECHNOLOGY
(2021)
Article
Nanoscience & Nanotechnology
Ping-Feng Chi, Feng-Wu Lin, Ming-Lun Lee, Jinn-Kong Sheu
Summary: This article demonstrates solar-blind photodetectors composed of Ga2O3/p-GaN bipolar heterojunctions formed through thermal oxidation and silicon ion implantation processes. The experimental results show that the thermal oxidation process converts p-GaN into semi-insulating β-Ga2O3 films, while silicon ion implantation transforms the insulating properties into n-type β-Ga2O3 with low resistivity and high electron concentration. The fabricated PDs exhibit high photoresponses in the solar-blind band.
Article
Chemistry, Physical
Yu-Tsun Yao, Wei-Hsin Liu, Sakthivel Kogularasu, Ming-Lun Lee, Jinn-Kong Sheu
Summary: In this study, n-GaN-based photoelectrodes were used for photoelectrochemical (PEC) reactions in NaCl electrolytes. Coating Ni(OH)(2) nanosheets on the n-GaN surface could suppress photocorrosion and enhance band bending between the electrolyte and semiconductor. The Ni(OH)(2) nanosheets also exhibited excellent catalytic characteristics in terms of carrier transferability and the ability to suppress surface defects.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Sakthivel Kogularasu, Balasubramanian Sriram, Sea-Fue Wang, Jinn-Kong Sheu
Summary: This article presents a method for synthesizing size- and morphology-controlled bismuth sulfide nanorods, and detects the electrochemical activity of NO2- through a modified electrode.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Tien-Yu Wang, Wei-Chih Lai, Syuan-Yu Sie, Sheng-Po Chang, Cheng-Huang Kuo, Jinn-Kong Sheu, Jong-Shing Bow
Summary: AlGaN and GaN sidewalls were thermally oxidized to improve the optoelectronic characteristics of deep ultraviolet LEDs. The thermally oxidized AlxGa2-xO3 sidewall significantly enhanced light extraction efficiency and increased the light output power.
Article
Chemistry, Multidisciplinary
Sakthivel Kogularasu, Balasubramanian Sriram, Sea-Fue Wang, Jinn-Kong Sheu
Summary: This study developed a disposable electrode fabricated with a sponge-like nickel iron carbonated layered double hydroxide (NiFe-LDH) trapped vanadium carbide (VC) nanocomposite for the detection of clenbuterol and ractopamine (RAC). The sensor showed a large linear response range, low detection limit, high sensitivity, and good reproducibility.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Yu-Neng Kao, Wei-Lun Huang, Sheng-Po Chang, Wei-Chih Lai, Shoou-Jinn Chang
Summary: Different oxygen partial-pressure MgGa2O4-resistive RAMs (RRAMs) were investigated for their resistive switching behaviors. By changing the fabrication conditions of the RS layer, the resistive switching characteristics of MgGa2O4 RRAM were significantly improved. A filament model was used to explain the mechanism of conductive filament generation and rupture. The high resistance state (HRS) was explained by the formation of the interfacial layer (AlOx) and the Joule heating effect. The low resistance state (LRS) and HRS corresponded to ohmic conduction and space charge-limited conduction, respectively. The optimized fabrication parameters of Al/MgGa2O4/Pt RRAM showed favorable cycling endurance and retention time, making them suitable for nonvolatile memristors and information security applications.
Article
Chemistry, Physical
Yu-Tsun Yao, Sakthivel Kogularasu, Wei-Hao Sun, Ting-Wei Huang, Ming-Lun Lee, Jinn-Kong Sheu
Summary: This article presents a method of fabricating FeOOH nanofilms on GaN epitaxial films for PEC reactions, which effectively enhances the carrier transfer efficiency and suppresses the recombination rate of photogenerated carriers.
ACS APPLIED ENERGY MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Tien-Yu Wang, Wei-Chih Lai, Qiao-Ju Xie, Shun-Hao Yang, Sheng-Po Chang, Cheng-Huang Kuo, Jinn-Kong Sheu
Summary: The growth conditions of the AlGaN barrier in AlGaN/AlGaN deep ultra-violet (DUV) multiple quantum wells (MQWs) play a crucial role in the light output power of DUV light-emitting diodes (LEDs). Reducing the growth rate of the AlGaN barrier improves the quality of AlGaN/AlGaN MQWs, including surface roughness and defects. The light output power can be enhanced by up to 83% by lowering the growth rate from 900 nm h(-1) to 200 nm h(-1). Additionally, the altered growth rate affects the far-field emission patterns and polarization degree of the DUV LEDs, indicating a modification in the strain of the AlGaN/AlGaN MQWs.
Article
Engineering, Electrical & Electronic
Wei-Chih Lai, Tien-Yu Wang, Siou-Huei Yang, Po-Yuan Chen, Tzung-Fang Guo, Peter Chen, Hsu-Cheng Hsu
Summary: The addition of choline chloride was found to enhance the optoelectronic properties of perovskite materials and reduce the conversion time. It also led to changes in the morphology and absorption edge of the perovskite, resulting in improved optoelectronic properties.
ACS APPLIED ELECTRONIC MATERIALS
(2021)
