Article
Materials Science, Multidisciplinary
A. S. Grenadyorov, V. O. Oskirko, A. N. Zakharov, I. M. Goncharenko, V. A. Semenov, S. V. Rabotkin, A. A. Solovyev
Summary: This paper discusses the effect of hydrogen-free active screen plasma nitriding on AISI 316L austenitic stainless steel. The results show that the active screen can form hard diffusion layers at lower temperatures and improve corrosion resistance. However, with longer process time, the corrosion resistance decreases.
METALS AND MATERIALS INTERNATIONAL
(2023)
Article
Chemistry, Physical
Tomasz Borowski
Summary: Through nitrocarburising treatment, the corrosion resistance of AISI 316L steel was enhanced, and the nitro-carbon expanded austenite layer exhibited higher corrosion resistance compared to the nitrogen austenite layer. After the breakdown of the passive layer, there was a more significant deceleration of pitting in the nitrocarburised layer compared to the nitrogen austenite layer.
Article
Materials Science, Coatings & Films
Santiago Dominguez-Meister, Inigo Ibanez, Anastasia Dianova, Marta Brizuela, Inigo Braceras
Summary: Nitriding processes can enhance the properties of titanium surfaces, with hollow cathode assisted active screen plasma proving to be an effective and fast technique. The study investigates the impact of process parameters on the surface microstructure, finishing, and hardness of titanium. Results show that nitriding can produce titanium nitride surfaces with thicknesses exceeding those of PVD coatings, and monitoring electrical contact resistance can provide valuable information on surface status evolution.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Multidisciplinary
Shun Hamashima, Akio Nishimoto
Summary: This study investigated the effect of a Ni screen on active screen plasma nitriding (ASPN) and voltage-assisted active screen plasma nitriding (S-DCPN). The results showed that using a Ni screen increased the diffusion of nitrogen atoms and nickel atoms in the sample. ASPN-treated samples with the Ni screen had lower surface hardness and higher corrosion resistance, while S-DCPN-treated samples with the Ni screen had higher surface hardness and lower corrosion resistance.
MATERIALS TRANSACTIONS
(2022)
Article
Chemistry, Physical
Chengwei Zhang, Kai Wen, Yan Gao
Summary: The microstructure and formation mechanism of the nitrided layer on surface nanocrystalline TA17 titanium alloy were studied. The nitrided layer consisted of an outer TiN layer formed by deposition of titanium nitride particles and an inner Ti2N layer formed by nitrogen diffusion into the titanium substrate. The Ti2N layer was an Al-depleted zone, indicating its formation mode of nitrogen diffusion. The TiN layer of the shot-peened sample was mainly composed of equiaxed nanograins and a small amount of columnar grains, compared to the columnar grains in the original sample. The formation of equiaxed nanocrystalline TiN was attributed to the presence of high-energy grain boundaries on the shot-peened surface.
APPLIED SURFACE SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Yasuhiro Hoshiyama, Keisuke Chiba, Tomoki Maruoka
Summary: Spheroidal graphite cast iron after ASPN treatment shows improvements in hardness, abrasion resistance, fatigue strength, and corrosion resistance. Longer treatment time results in more significant enhancements in performance.
Article
Materials Science, Multidisciplinary
Kenzo Sumiya, Shinkichi Tokuyama, Akio Nishimoto, Junichi Fukui, Atsushi Nishiyama
Summary: Low-temperature active-screen plasma nitriding (ASPN) was successfully applied to improve the bending rigidity and corrosion resistance of a small-diameter thin pipe made of austenitic stainless steel. Increasing nitriding temperature led to thicker nitriding layer, higher surface hardness, and increased bending load. Corrosion was observed only near the tip of the nitrided samples at high nitriding temperatures during salt spray test.
Article
Materials Science, Multidisciplinary
Xiao Tao, Thomas John Collins, Qingshuo Ao, Huibin Liu, Behnam Dashtbozorg, Xiaoying Li, Hanshan Dong
Summary: In this study, Fe-24Mn-2Al-0.45C TWIP steel was investigated after active screen plasma nitriding (ASPN) treatment at temperatures ranging from 350-480 degrees C. The study revealed a selective oxidation mechanism on TWIP steel during ASPN treatment at 480 degrees C, resulting in a different hardness-depth profile compared to lower temperatures.
Article
Metallurgy & Metallurgical Engineering
Suman Patel, B. Ganguli, S. K. Chaudhury
Summary: The study found that active screen plasma nitriding of 347H austenitic stainless steel at higher temperatures results in higher hardness and lower wear loss compared to nitriding at lower temperatures, primarily due to the formation of a higher amount of hard nitride phase(s) in the nitrogen-enriched layer.
TRANSACTIONS OF THE INDIAN INSTITUTE OF METALS
(2022)
Article
Engineering, Mechanical
M. Naeem, J. C. Diaz-Guillen, Ayesha Khalid, I Guzman-Flores, R. Munoz-Arroyo, Javed Iqbal, R. R. M. Sousa
Summary: In this study, high-temperature plasma nitriding was used to improve the surface hardness and wear resistance of AISI-1045 steel. Post-oxidation treatment was applied to the nitrided samples to investigate its effect. The results showed that the nitrided sample had a white layer, while post-oxidation transformed it into hematite and magnetite phases. The hardness of the nitrided samples significantly increased, although post-oxidation caused a slight decrease. The thickness of the nitrided layer and oxide layer increased with post-oxidation treatment. The nitrided sample exhibited abrasive wear, while the post-oxidized sample showed outstanding wear resistance with an adhesive wear mechanism.
TRIBOLOGY INTERNATIONAL
(2022)
Article
Engineering, Chemical
Yukyhiro I. Oikava, Bruna C. E. S. Kurelo, Giuseppe Pintaude, Viviane T. Mazur, Xiaoying Li, Hanshan Dong
Summary: This investigation explores the friction and wear behaviors of active-screen plasma-nitrided Inconel 718 alloy in reciprocating tests under saline solution. The results show that the presence of a nitrided layer significantly reduces wear when using a steel ball as a counterbody. However, the nitrided layer does not affect the friction or wear rate of Inconel 718 when a ceramic ball is used, and abrasive wear becomes the primary mechanism.
Article
Materials Science, Coatings & Films
Zhen Huang, Zi-Xin Guo, Lei Liu, Yuan-Yuan Guo, Jun Chen, Ze Zhang, Jin-Long Li, Yan Li, Yan-Wen Zhou, Ying-Shuang Liang
Summary: Nitriding of AISI 316L austenitic stainless steel under various pulsed bias conditions resulted in different phase structures, thicknesses, and hardness of the nitrided layer, which in turn affected the corrosion resistance of the material.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Materials Science, Coatings & Films
Jiaqin Liu, Xiaofang Wang, Yin Hu, Lizhu Luo, Chunli Jiang, Fan Liu, Wei Jin, Kangwei Zhu, Zhong Long, Kezhao Liu
Summary: Surface modification technologies have been used to improve the mechanical properties of Ti and its alloys. In this study, the influence of different H2/(N2 + H2) ratio on the microstructure of Ti specimens nitrided by cathodic cage plasma nitriding (CCPN) was investigated. It was found that the compound layer thickness and surface hardness increased with the introduction of H2, but the tensile properties were deteriorated due to the generation of titanium hydride during nitriding process.
SURFACE & COATINGS TECHNOLOGY
(2023)
Article
Engineering, Manufacturing
Kaijie Lin, Jingchi Qiao, Dongdong Gu, Haoran Wang, Bo Shi, Wanli Zhang, Junhao Shan, Yong Xu, Linhai Tian
Summary: Active screen plasma nitriding (ASPN) was used to improve the corrosion resistance and interfacial contact resistance (ICR) of laser powder bed fusion (LPBF) fabricated 316L stainless steel bipolar plates. The nitrided LPBF-processed 316L SS showed the highest surface nitrogen concentration, thickest nitrided layer, and highest average hardness. The ICR values decreased significantly after ASPN treatment. The ASPN mechanism of LPBF-processed 316L SS was proposed by comparing the multiscale microstructures between LPBF-processed and forged 316L SS.
VIRTUAL AND PHYSICAL PROTOTYPING
(2023)
Article
Materials Science, Multidisciplinary
Mariana Correa Rossi, Pedro Akira Bazaglia Kuroda, Larissa Solano de Almeida, Luciana Sgarbi Rossino, Conrado Ramos Moreira Afonso
Summary: This study aims to improve the microhardness and wear properties of as-cast titanium samples (CP-Ti, Ti-Al-4V, and TNZ-33) by creating a hard surface through plasma nitriding. The presence of nitrides was evaluated using XRD, and the microstructure and chemical composition were analyzed using electron microscopy and EDS. Plasma nitriding resulted in the formation of TiN on CP-Ti, TiN and Ti2N on Ti-6Al-4V, and TiN and ZrN on TNZ-33. The hardness of all materials significantly increased after nitriding, and the wear properties were improved.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Energy & Fuels
Ahmed S. Menesy, Hamdy M. Sultan, Ibrahim O. Habiballah, Hasan Masrur, Kaisar R. Khan, Muhammad Khalid
Summary: In this study, the optimal design of a standalone hybrid renewable energy system is investigated using PV, wind turbine, biomass sources, and a hydro-pumped storage system. The HBO algorithm is found to be the most effective in achieving the desired design that minimizes the cost of energy and loss of power supply probability.
Article
Energy & Fuels
Mohammed Alqahtani, Ponnusamy Marimuthu, Veerasamy Moorthy, B. Pangedaiah, Ch. Rami Reddy, M. Kiran Kumar, Muhammad Khalid
Summary: This paper presents a computational procedure utilizing a novel gray wolf optimization algorithm to determine the optimal distribution of network reconfiguration. The aim is to minimize system power loss, improve the voltage profile, and meet operating constraints under different conditions. The proposed method effectively handles constraint breaches and obtains high-quality solutions in a shorter time. Experimental results using the 33-bus and 69-bus systems demonstrate the efficacy of the GWO algorithm compared to other popular optimization techniques for solving distribution network reconfiguration problems.
Article
Energy & Fuels
Miswar Akhtar Syed, Muhammad Khalid
Summary: This study introduces a solar-wind power and battery state of charge control technique using a hydrogen electrolyzer fuel cell unit. By utilizing an Intelligent Model Predictive Controller and a neural network plant model, it achieves stable PV-wind power supply with regulated battery energy storage system charging and discharging.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Energy & Fuels
Muhammad Majid Gulzar, Daud Sibtain, Muhammad Khalid
Summary: The rapid utilization of electricity demands stable operation of the power system. A novel control design called CFMPC-FOPID is proposed to handle load frequency control in an efficient manner. The controller is optimized using a sooty tern optimization algorithm. It is successfully tested in a multiarea hybrid power system with renewable energy sources and varying load scenarios, outperforming other techniques in terms of stabilizing time.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Physics, Multidisciplinary
Muhammad Asghar, Muhammad Yousaf, Bader Huwaimel, Tahir Iqbal, Irfan Ahmed, Muhammad Tauseef Qureshi, Muhammad Abrar, Muhammad Shafiq, Abdullah Almohammedi, Reda Abdel Hameed, Mahmoud AlElaimi, Mishaal Maryam, Sumera Afsheen
Summary: A titanium-based multilayer coating (TiO/TiN) was deposited on Ni-Cr metallic alloy using a cathodic cage plasma processing technique. X-ray photoelectron spectroscopy (XPS) confirmed the presence of TiO/TiN with specific energy levels for Ti, N, and O. X-ray diffraction (XRD) analysis revealed a polycrystalline structure with a crystallite size of 32 nm. The corrosion analysis showed improved corrosion resistance and antibacterial activity of the TiO/TiN-coated specimens. This research provides insights into the biological features of metallic materials for medicinal applications.
Article
Engineering, Electrical & Electronic
Ch. Rami Reddy, Obbu Chandra Sekhar, B. Pangedaiah, Khalid A. Khan, Muhammad Khalid
Summary: This paper presents a new passive island detection method for grid-connected hybrid distributed generating systems. The method utilizes positive sequence voltage and current components to calculate Islanding Detection Index (IDI). The proposed method can identify islanding condition in under 70 msec, even in zero power mismatch condition. It is simple, inexpensive, and works with different types of distributed generation.
ELECTRIC POWER COMPONENTS AND SYSTEMS
(2023)
Review
Engineering, Electrical & Electronic
Ijaz Ahmed, Abdul Basit, Faizan Mustafa, Mohammed Alqahtani, Muhammad Khalid
Summary: This paper analyzes key control mechanisms in energy utility networks, focusing on the auxiliary control category. It examines the benefits and drawbacks of different approaches and explores information interchange architectures. The study emphasizes the importance of auxiliary control in ensuring reliable utility infrastructure operation and highlights the lack of comprehensive scholarly references.
IET GENERATION TRANSMISSION & DISTRIBUTION
(2023)
Review
Energy & Fuels
Mohammad Ali, Atif Iqbal, Muhammad Khalid
Summary: This paper comprehensively reviews the state-of-the-art MC technology and its prospects, including the advancements in topological structures, modulation and control algorithms, and multiphase structures. It aims to provide comprehensive information on MC technology's current industrial applications and the research scope as the world moves towards AI and digitalization.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2023)
Article
Computer Science, Artificial Intelligence
Muhammad Majid Gulzar, Huma Tehreem, Muhammad Khalid
Summary: The lack of control in voltage overshoots, transient response, and steady-state error in a grid-connected photovoltaic (PV) system can have negative impacts on battery storage and other grid components. An AI optimization technique is proposed to improve the efficiency of the overall power system by determining the optimal sliding mode controller (SMC) gain. The proposed control strategy utilizes a particle swarm optimization algorithm (PSO) to optimize the SMC gains used in perturb and observe (P & O) algorithms.
INTERNATIONAL JOURNAL OF INTELLIGENT SYSTEMS
(2023)
Article
Computer Science, Information Systems
Muaiz Ali, Mohamed A. A. Abdulgalil, Ibrahim Habiballah, Muhammad Khalid
Summary: A new method has been developed to minimize the operating cost in microgrids integrated with renewables and energy storage systems (ESSs) through demand response. By shifting some of the load from high-price periods to low-price periods, the operating cost is reduced for operators and bill prices decrease for consumers. The optimization problem is solved using mixed integer quadratically constrained programming (MIQCP) in the General Algebraic Modeling System (GAMS) with the CPLEX solver.
Article
Computer Science, Information Systems
Muhammad Majid Gulzar, Sumbal Gardezi, Daud Sibtain, Muhammad Khalid
Summary: The research presents a discrete-time model of a hybrid power system consisting of a photovoltaic system, wind energy system, fuel cell, and battery energy storage system. The fuzzy tuned fractional-order proportional derivative controller is used for load frequency control, with automatic tuning of the controller's gains based on fuzzy logic. A diesel generator acts as a synchronous condenser to provide Reactive Power Balance and voltage stability, while the proposed control scheme minimizes frequency oscillation and achieves minimum steady-state error under dynamic load conditions.
Article
Multidisciplinary Sciences
Sareddy Venkata Rami Reddy, T. R. Premila, Ch. Rami Reddy, Muhammad Majid Gulzar, Muhammad Khalid
Summary: In this article, a novel passive islanding detection strategy for a hybrid distributed generation system is developed using variational mode decomposition (VMD). The strategy evaluates the ripple content of the voltage signal at the point of common coupling (PCC) and decomposes the input voltage signal into its individual modes or intrinsic mode functions (IMFs). The upper envelope of the first mode's IMF is used for island detection. The suggested approach shows reliable separation of the islanding event from other events and can identify islanding in about 0.15 s even without power imbalance. It has been tested in various operational scenarios and proved effective in non-island situations, making it an easy-to-implement solution for different types of distributed generation connected to the utility grid.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Computer Science, Information Systems
Mohammad Ali, Mohammad Tayyab, Adil Sarwar, Muhammad Khalid
Summary: Switched-Capacitor multilevel inverters (SCMLI) can generate a 13-level waveform with only fourteen switches, two diodes, and four capacitors, using a single source. The voltage across the capacitors is maintained by connecting the DC source and capacitors in parallel at different time locations. This new topology is compared with other 13-level topologies in terms of switches, diodes, capacitors, and cost factors. Experimental validation on a hardware prototype confirms its performance under various operational conditions.
Article
Multidisciplinary Sciences
Mahboob Hassan, Mohammad Ali, Mohammad Tayyab, Adil Sarwar, Mohd Tariq, Mohammad A. Abido, Muhammad Khalid
Summary: This study proposes a single-phase boosting nine-level inverter which utilizes a DC-source and three capacitors, and it is verified for steady and transient load conditions. It also introduces a novel harmonic elimination-based-nearest level modulation scheme to eliminate undesired low-order harmonics from the output voltage waveform. The merits of this topology, including simplified control, lower power loss, reduced total voltage stress, and enhanced voltage gain, are discussed in comparison with other 9-level inverters.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Mohammad Zaid, Shahrukh Khan, Arshad Mahmood, Mohammad Ali, Adil Sarwar, Muhammad Khalid
Summary: The proposed high gain DC-DC converter in this paper has advantages of high voltage gain, common ground structure, and low ripple continuous input current. Its gain and efficiency have been calculated and verified in non-ideal conditions. Experimental results show that the converter functions effectively in open-loop conditions and produces significant voltage gain at lower duty cycles.
ARABIAN JOURNAL FOR SCIENCE AND ENGINEERING
(2023)
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)
