Article
Environmental Sciences
Ammara Nazir, Muhammad Imran, Farah Kanwal, Shoomaila Latif, Ayesha Javaid, Tak H. Kim, Grzegorz Boczkaj, Ashwag Shami, Hafiz Iqbal
Summary: Lanthanum ferrite nanoparticles were synthesized using a simple co-precipitation method with two different templates, sorbitol and mannitol, to tune their properties. The nanoparticles were characterized using various techniques and it was found that sorbitol resulted in smaller bandgap, different phases, and better distribution compared to mannitol. Sorbitol also exhibited higher photocatalytic efficiency and recyclability. These findings highlight the importance of template selection in tailoring the properties of lanthanum ferrite nanoparticles for environmental remediation applications.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Heon Lee, Jaegu Park, Su Shiung Lam, Young-Kwon Park, Sang-Chai Kim, Sang-Chul Jung
Summary: In this study, a visible-light reactive TiO2 photocatalyst doped with lanthanum was successfully synthesized and used to degrade diclofenac. The doped La improved the activity of the photocatalyst and degradation occurred through hydroxylation and ring closure pathways.
SUSTAINABLE CHEMISTRY AND PHARMACY
(2022)
Article
Environmental Sciences
Qiunan Sun, Xuejiang Wang, Yiyang Liu, Siqing Xia, Jianfu Zhao
Summary: A novel floating catalyst OVs-CFEp was synthesized to efficiently activate PMS for SMT removal, showing superior photocatalytic performance and recyclability. The study revealed reaction mechanisms and degradation pathways through experiments and theoretical calculations, providing new insights for environmental remediation applications.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Chemistry, Multidisciplinary
Yong-Jun Yuan, Nan Lu, Liang Bao, Rui Tang, Fu-Guang Zhang, Jie Guan, Hao-Dong Wang, Qing-Yu Liu, Quan Cheng, Zhen-Tao Yu, Zhigang Zou
Summary: Two-dimensional phosphorus silicon nanosheets show high efficiency and activity as metal-free visible-light-responsive photocatalysts for photocatalytic H-2 production and nitrogen fixation.
Article
Chemistry, Physical
Yan Che, Xin Liu, Mengying Li, Xingbing Liu, Meidan Wang, Qihui Song, Hongzhu Xing
Summary: The synthesis of MOF-based nanocomposites as photocatalysts for cross-dehydrogenation coupling (CDC) reactions is reported. The resulting Ag/MOF nanocomposites show efficient and recyclable photocatalytic performance under visible light. The ultrasmall Ag nanoparticles (NPs) not only enhance the charge generation in the nanocomposite but also interact directly with the amine substrate, promoting the reaction. The study provides insights into the synergy effect of MOFs and metal nanoparticles for organic transformation.
APPLIED SURFACE SCIENCE
(2023)
Article
Environmental Sciences
Hua Huang, Xin Tao, Zhirui Niu, Xiaoqian Qin, Jialu Ren, Baoqin Shan, Yu Liu, Jingyu Ren
Summary: In this work, novel Z-scheme heterojunction MnZnFe2O4@Ag3PO4 magnetic photocatalysts with excellent visible-light-driven photocatalytic activity were successfully constructed and characterized. The introduction of MZFO in the heterojunction exhibited good adsorption effect on visible light and significantly improved charge separation and electron transfer. The MZFO@APO-40% with 40% APO content showed rapid photodegradation performance, achieving a 100% removal efficiency of phenol after 12 minutes of visible light irradiation. The addition of MZFO has the potential to promote its application in environmental remediation.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Environmental Sciences
Govindarajan Ramadoss, Shanmugasundaram Prema Suriyaraj, Ramachandran Sivaramakrishnan, Arivalagan Pugazhendhi, Selvakumar Rajendran
Summary: This study successfully synthesized ferromagnetic manganese ferrite nanoparticles for the mineralization of azo dye in aqueous solution under visible light irradiation. The nanoparticles showed high crystallinity and mesoporous distribution, providing efficient photocatalytic degradation of the dye. Additionally, the particles were recoverable and reusable, showing high degradation efficiency even after multiple cycles.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Nanoscience & Nanotechnology
Sheng-Hua Ma, Wei-Liang Jin, Wei Li, Hai-Yuan Wang, Li-Na Zhu, Ming Zeng, De-Ming Kong
Summary: This research demonstrates that covalent organic frameworks (COFs) can be used as promising candidates to prepare high-performance Bi/COF plasmonic photocatalysts. The prepared Bi/COF nanoheterojunctions not only show increased visible light harvesting, accelerated electron transfer, and retarded charge recombination but also maintain strong substrate adsorption capability of COFs. Moreover, the proposed Bi/COF photocatalyst works well in the visible-light photocatalytic degradation of organic pollutants.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Tao Yuan, Meifang Zheng, Markus Antonietti, Xinchen Wang
Summary: Boron carbonitride (BCN) ceramics can reduce organic halides, including (het)aryl and alkyl halides, with visible light irradiation, allowing for cross-coupling reactions to form new bonds. BCN can introduce hydrogen, (het)aryl, and sulfonyl groups into arenes and heteroarenes in the absence of metal catalysts, showing stable and tolerant properties towards different substituents.
Article
Materials Science, Ceramics
Weijie Lei, Hao Wang, Xiaojing Zhang, Zhimao Yang, Chuncai Kong
Summary: Cu2O-Au and Cu2O-Au-TiO2 composite structures were synthesized for efficient photocatalytic degradation reactions, accelerating the separation and transfer of photogenerated carriers through the synergistic effect of localized surface plasmon resonance and Schottky barrier, and constructing a Z-scheme electron transfer system to enhance the photodegradation performance.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Murugan Arunachalapandi, Selvaraj Mohana Roopan
Summary: In this study, Cu3TiO4 photocatalyst was successfully prepared from lemon juice extract and was used for the synthesis of acridines under visible light irradiation. The characterisation techniques confirmed the structure and properties of Cu3TiO4 nanoparticles, showing high crystalline nature, excellent stability, good emission and absorbing of light properties, and specific chemical states. The designed photocatalyst with a narrow band gap showed enhanced visible light absorbing ability, leading to good activity, short reaction time, high yields, and easy recovery.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Materials Science, Multidisciplinary
Byung-Geon Park
Summary: Bismuth ferrite thin film coated on polycarbonate surface showed photocatalytic properties under visible light and physicochemical properties. The film mainly consisted of BiFeO3 and Bi24Fe2O39 structures, absorbing light up to 600 nm and with an estimated bandgap of 2.3 eV. The film successfully decomposed formaldehyde and sterilized bacteria under visible light irradiation.
Article
Environmental Sciences
Zhirui Niu, Xin Tao, Hua Huang, Xiaoqian Qin, Caiyan Ren, Yaoze Wang, Baoqin Shan, Yu Liu
Summary: In this study, magnetically recyclable Mn0.6Zn0.4Fe2O4@Zn1-xMnxS photocatalysts were successfully synthesized from spent batteries using a green bioleaching and egg white-assisted hydrothermal method. The optimized catalyst showed enhanced photodegradation performance towards phenol under visible light irradiation and exhibited good reusability and high magnetic separation properties. This new material has the advantages of low costs, simple reuse, and great potential for application.
Article
Chemistry, Applied
Shuo Wang, Zhenke Chen, Ying Zhao, Chenlu Sun, Jianye Li
Summary: The study constructed unique starlike La-doped ZnO-SiO2 photocatalysts, confirming their enhanced visible light absorbance and oxidizing ability, as well as good catalytic activity and stability in the photodegradation of MG.
JOURNAL OF RARE EARTHS
(2021)
Article
Chemistry, Inorganic & Nuclear
M. Jothibas, S. Suganya, A. Muthuvel, E. Paulson
Summary: In this study, pure and different weight percentages of Ag ions doped ZnS nanoparticles were successfully synthesized using a solid-state reaction method. The physiochemical properties of the synthesized nanoparticles were thoroughly examined using appropriate characterization tools. The results showed that the average crystallite size of the crystalline nanoparticles decreased from 3.68 nm to 2.41 nm and then increased due to the influence of Ag-ions on the ZnS matrix. The optical research demonstrated that the bandgap wideness decreased due to Ag-ion interstitial secondary energy levels, enhancing the catalytic capability of ZnS nanoparticles under renewable sunlight irradiation.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Nishi Mehak, Bindu Rani, Aadil Fayaz Wani, Shakeel Ahmad Khandy, Ajay Singh Verma, Atif Mossad Ali, M. A. Sayed, Shobhna Dhiman, Kulwinder Kaur
Summary: In this study, the electronic, structural, and thermoelectric properties of newly designed layered rare-earth metal germanide halides were investigated. The materials showed promising thermoelectric performance, making them suitable candidates for energy harvesting in thermoelectric applications.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Devidas I. Halge, Vijaykiran N. Narwade, Nabeel M. S. Kaawash, Pooja M. Khanzode, Sohel J. Shaikh, Jagdish W. Dadge, Prashant S. Alegaonkar, Rajeshkumar S. Hyam, Kashinath A. Bogle
Summary: This study presents the design and fabrication of a high-performance blue light photodetector using an n-type cadmium sulfide (CdS) thin film and a p-type polyaniline (PANI). The photodetector demonstrates exceptional performance characteristics, including high responsivity, detectivity, and sensitivity, along with rapid response time and rectification behavior. The research represents a significant advancement in the field of high-performance photodetectors.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Da Hu, Jiabin Lu, Qiusheng Yan, Yingrong Luo, Ziyuan Luo
Summary: This study introduces a chemical mechanical polishing technique based on metal electrochemical corrosion for single-crystal SiC to address the environmental pollution caused by the polishing solution in chemical mechanical polishing. Wear experiments were conducted to investigate the wear properties of SiC C-surface under different grinding ball materials and solutions. The proposed mechanism of material removal in single-crystal SiC via metal electrochemical corrosion was discussed.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Lifang Mei, Long Lin, Dongbing Yan, Yu Liang, Yu Wu, Shuixuan Chen
Summary: This paper investigates the removal of CuO particles from silicon wafer surfaces using a picosecond laser. Numerical calculations and experimental research were conducted, and a thermal-stress coupled finite element model was established. The results show that as the laser energy density increases, the removal rate of CuO particles initially increases and then decreases, while the roughness of the silicon substrate decreases and then increases.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Michihiro Yamada, Shuhei Kusumoto, Atsuya Yamada, Kentarou Sawano, Kohei Hamaya
Summary: In this study, we demonstrated the low-temperature growth of a Ge layer on a Co-based Heusler alloy via Sn doping, which improved the magnetic properties and spin signal.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Xiang-Long Wei, Bao-Feng Shan, Zong-Yan Zhao
Summary: This study synthesized and characterized a CuAlO2/CuGaO2 heterostructure and evaluated its photocatalytic performance. The heterostructure exhibited superior performance compared to individual CuAlO2 and CuGaO2 photocatalysts, with increased carrier concentration, enhanced redox capabilities, superior electrochemical stability, and reduced interfacial resistance. Photocatalytic experiments demonstrated the remarkable oxidation potential and notable reduction activity of the heterostructure, outperforming CuAlO2 and CuGaO2 in degradation rates and hydrogen production rates, respectively. These findings highlight the superior performance and broad applicability of the CuAlO2/CuGaO2 heterostructure in various photocatalytic reactions.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Micka Bah, Daniel Alquier, Marie Lesecq, Nicolas Defrance, Damien Valente, Thi Huong Ngo, Eric Frayssinet, Marc Portail, Jean-Claude De Jaeger, Yvon Cordier
Summary: This study investigates the AlN nucleation layer issue in GaN high frequency telecommunication and power switching systems fabricated after heteroepitaxy on Silicon or Silicon Carbide. It is shown that using 3C-SiC as an intermediate layer can significantly decrease RF propagation losses. Measurements and analyses demonstrate that dopant diffusion into the 3C-SiC pseudo-substrate is confined beneath the interface, and a slightly conductive zone is present beneath the AlN/3C-SiC interface, explaining the low propagation losses obtained for the devices. This work highlights the importance and efficiency of the 3C-SiC intermediate layer as a pseudo-substrate.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Shuang Wang, Lijun Wu, Zhiqing Wang, Ziyue Qian
Summary: The geometric structure and electrical properties of zigzag and armchair DWSiNT perfect tubes with different Stone-Wales defects were simulated using the SCC-DFTB method. It was found that the atomic arrangement, stability, energy gap, and charge distribution strongly depend on the type of tube. The effects of strong and weak electric fields on the tubes were also investigated, showing different impact on stability and energy gap. These findings have implications for future experimental studies.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Nanda Kumar Reddy Nallabala, Sunil Singh Kushvaha, Sambasivam Sangaraju, Venkata Krishnaiah Kummara
Summary: This study focuses on the preparation and performance of MIS-type high-k dielectric oxide-based UV photodetectors. The researchers found that the Au/Ta2O5/GaN devices prepared on Ta2O5/GaN heterojunction with post-annealing exhibited improved photoresponsivity, EQE, and rise/fall times. This improvement is attributed to the optimized band configuration of the Ta2O5/GaN heterostructure and the effect of post-annealing on photogenerated charge carriers.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Jean-Francois Michaud, Marc Portail, Daniel Alquier, Dominique Certon, Isabelle Dufour
Summary: This paper reviews the use of MEMS devices without sensitive layers in gas detection applications. These devices can measure a physical property of the gas to determine its concentration, and have the advantages of generality and high detection limits.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Kanyu Yang, Chaojie Shi, Ruizhao Tian, Haoyue Deng, Jie He, Yangyang Qi, Zhengchun Yang, Jinshi Zhao, Zhen Fan, Jun Liu
Summary: This study investigates the electrical and synaptic properties of Ag/TiO2 nanorod/FTO-based RRAM devices, focusing on the impact of different seed layer thicknesses on nanorod thickness and RRAM performance. The devices show remarkable achievements in terms of endurance, self-compliance, and resistance switching ratio. The switching mechanism is attributed to space-charge-limited conduction resulting from electron trapping in oxygen vacancy traps. The devices also maintain stable synaptic properties even after undergoing multiple cycles of long-term potentiation and depression.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Karthickraj Muthuramalingam, Wei-Chih Wang
Summary: This study presents a non-destructive approach using terahertz time-domain spectroscopy (THz-TDS) to estimate the electrical properties of semi-insulating compound semiconductors. The study successfully measures the resistivity and carrier concentration of semi-insulating Silicon Carbide (SiC) and Indium Phosphide (InP) wafers using THz-TDS in transmission mode. The simplified Drude model and the Nelder-Mead algorithm are employed to estimate the electrical properties, and the results are in accordance with the manufacturer specifications. The feasibility of non-destructive mapping of the electrical properties is demonstrated, offering a promising tomographic inspection approach for online monitoring.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Pengfei Wei, Rui Tong, Xiaofeng Liu, Yao Wei, Yongan Zhang, Xu Liu, Jian Dai, Haipeng Yin, Dongming Liu
Summary: This study investigates the influence of SiNx and SiOxNy as rear-side passivation films on the performance of PERC+ cells. SiNx film is found to have better passivation performance and resistance to aluminum paste erosion, while SiOxNy film exhibits better optical performance. By designing multi-layer SiNx/SiOxNy/SiNx stacks, the cells' efficiency and bifaciality are significantly improved.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Article
Engineering, Electrical & Electronic
Shuangting Ruan, Xiaolan Li, Wen Cui, Zhihui Zhang, Zhihui Xu, Huanqi Cao, Shougen Yin, Shishuai Sun
Summary: Integrating photosensitive electrode materials can effectively improve the low temperature tolerance and enhance energy density and power density. The surface morphology reconstruction technique can increase the active surface area and improve electrolyte contact, leading to higher specific capacity. Additionally, the electrodes demonstrate excellent photoelectric and photothermal conversion abilities, allowing the supercapacitor to maintain high energy density even at low temperatures.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
Review
Engineering, Electrical & Electronic
Ashmalina Rahman, James Robert Jennings, Mohammad Mansoob Khan
Summary: This review provides a comprehensive overview of the synthesis and applications of nanostructured CuInS2 in photocatalytic applications. Various strategies, including the introduction of dopants, surface decoration, and heterojunction formation, have been summarized to improve the photocatalytic performance of CuInS2. However, scientific challenges such as the high carrier recombination rate limit the broad application of CuInS2.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2024)
