Article
Materials Science, Ceramics
Rohit Malik, Young-Wook Kim, Woo H. Nam
Summary: Porous SiC ceramics with a core-shell structure were fabricated by sintering nano-SiC powder-carbon black compacts in air. During sintering, oxidation of SiC particles led to the formation of a SiO2 shell, while low-temperature phase transformation and precipitation of non-graphitic carbons were also observed.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Inorganic & Nuclear
Khawla Azaiez, Rabia Benabderrahmane Zaghouani, Mahmoud Daoudi, Mosbah Amlouk, Wissem Dimassi
Summary: This study focuses on the impact of Bismuth solution treatment on the optical properties of p-type porous silicon. By incorporating Bi layers of variable thickness in porous silicon, the photoluminescence property in the visible region has been improved. This finding could be significant for various optoelectronic applications.
INORGANIC CHEMISTRY COMMUNICATIONS
(2021)
Article
Optics
I. Gavrilchenko, Y. S. Milovanov, S. Gryn, S. A. Alekseev, A. N. Zaderko, A. G. Shkavro, I. I. Ivanov, V. A. Skryshevsky
Summary: In this study, we reported on the structural and photoluminescence properties of porous silicon carbide formed by electro-chemical etching of SiC plate. The photoluminescence spectrum in the visible region was observed and could be fitted with at least three peaks, with the properties discussed in relation to SEM, TEM, and Raman studies. The nature of the peaks were explained by electron-hole recombination, surface defect centers, and SiC nanocrystallites.
JOURNAL OF LUMINESCENCE
(2021)
Article
Food Science & Technology
Chonghao Bi, Tong Zhou, Zeyuan Wu, Zhigang Huang
Summary: This study investigated the effects of soybean oil concentration on the rheology, water-holding capacity, and thermal stability of acid-mediated soy protein isolate (SPI) emulsion gels. The addition of soybean oil improved the elastic properties of the gels and resulted in a more disordered microstructure as the oil concentration increased. The acid-mediated SPI emulsion gels with soybean oil as the active filler showed improved gel properties, greater thermal stability, and a homogeneous network structure compared to the acid-mediated SPI emulsion gels.
Article
Chemistry, Multidisciplinary
Maxim B. Gongalsky, Nikolay V. Pervushin, Daria E. Maksutova, Uliana A. Tsurikova, Pavel P. Putintsev, Oleg D. Gyuppenen, Yana V. Evstratova, Olga A. Shalygina, Gelina S. Kopeina, Andrey A. Kudryavtsev, Boris Zhivotovsky, Liubov A. Osminkina
Summary: The optical monitoring of sol- and por-SiNP biodegradation revealed that sol-SiNP gradually dissolved over 20 days, while por-SiNP rapidly dissolved within 24 hours. Analysis of Raman and PL showed the low cytotoxicity of SiNPs towards cells, providing valuable insights for the development of biodegradable drug delivery systems based on SiNPs.
Article
Chemistry, Physical
Hongfei Yang, Zhenzhong Zhang, Jia Cai, Borui Yang, Dong Fan, Fangxia Zhao
Summary: By preparing porous SiO through silver-assisted chemical etching and then chemically nickel-plating to form porous SiO/Ni composite materials, the expansion issue of silicon monoxide can be alleviated, and the electrochemical performance of the electrode can be improved.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Optics
Noha H. Harb, Falah A. -H. Mutlak
Summary: The research investigates the impact of Gamma-rays on the morphology and size of porous silicon, utilizing various characterization techniques to observe significant changes in pore structure and size with irradiation. The study suggests that Gamma irradiation may enhance the visibility and size of pores in porous silicon.
Article
Chemistry, Physical
Hongfei Yang, Zhenzhong Zhang, Jia Cai, Borui Yang, Dong Fan, Fangxia Zhao
Summary: Porous SiO/Ni composites were prepared as anode materials for lithium-silicon batteries using silver-assisted chemical etching and electroless Ni plating. The refinement and porosity of SiO particles were found to alleviate the volume expansion and improve the electrochemical performance of the electrodes. Electroless plating of nickel further reduced the volume expansion and increased the electrical conductivity. The P-SiO/Ni anode with 3.03% Ni content prepared at a Ni2+ concentration of 13 g/L exhibited the best electrochemical performance.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Materials Science, Multidisciplinary
Aleksandr S. Lenshin, Yaroslav A. Peshkov, Konstantin A. Barkov, Margarita V. Grechkina, Anatoliy N. Lukin, Sergey V. Kannykin, Dmitriy A. Minakov, Olga V. Chernousova
Summary: Porous silicon samples with varying porosity from 5% to 80% were obtained via electrochemical etching and their photoluminescence properties were investigated. The porosity index was calculated using X-ray reflectometry data, while the surface composition was controlled using ultra-soft X-ray spectroscopy and infrared (IR) spectroscopy. It was found that the degree of sample surface oxidation increased with increasing porosity. Two known mechanisms of photoluminescence in porous silicon, related to surface composition and morphology, were identified and the porosity index values indicating the dominations of these mechanisms were determined. Overall, an increase in porosity index led to enhanced photoluminescence.
Article
Engineering, Electrical & Electronic
Kirill A. Gonchar, Daniil Moiseev, Ivan Bozhev, Liubov A. Osminkina
Summary: Porous silicon nanowires (PSi NWs) were fabricated using a two step metal-assisted chemical etching method, and it was found that their structural and optical properties depend on the concentration of hydrogen peroxide. The thickness ratio of layers and size of nanocrystals can be tuned by choosing the required concentration of H2O2.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Engineering, Electrical & Electronic
F. Morales-Morales, A. Benitez-Lara, N. Hernandez-Sebastian, F. Ambriz-Vargas, M. R. Jimenez-Vivanco, R. Lopez, A. Morales-Sanchez
Summary: This study presents an analysis of the interface of the ZnO/PSi heterojunction using photoluminescence, cathodoluminescence, and electron beam induced current. The thermal annealing process was found to widen the luminescence spectrum and favor the crystallization of the structure. Cathodoluminescence images focused on the emission of ZnO and the ZnO/PSi structure. Electron beam induced current characterization provided information on the electronic properties and the density of donor impurity atoms in the ZnO film.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2022)
Article
Materials Science, Ceramics
Atanu Dey, Nijhuma Kayal, Omprakash Chakrabarti, Nilo M. Fortes, Murilo D. M. Innocentini, Atiar R. Molla, Prasanta Sinha, Srikanta Dalui
Summary: In this study, oxide-bonded porous SiC ceramic filter supports were prepared and their material properties and structure characteristics were investigated. Materials processed by the mullite bonding technique exhibited higher strength and elastic modulus at a similar porosity level. Spray coating method was applied for preparation of oxidation-bonded SiC filtration layer on the porous SiC support compacts.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Alfredo Morales-Sanchez, Maria Antonia Cardona-Castro, Liliana Licea-Jimenez, Liliana Palacios-Huerta, Antonio Coyopol, Sergio Alfonso Perez-Garcia, Jaime Alvarez-Quintana, Mario Moreno
Summary: In this work, a correlation between the composition and the microstructural and optical properties of luminescent porous silicon (PSi) films is shown. The use of nitric acid enhances the photoluminescence intensity of PSi samples. Changing the concentration ratio of the electrolyte solution can modify the size of silicon nanocrystals and the emission wavelength. These findings are important for understanding the properties and applications of PSi.
Article
Materials Science, Multidisciplinary
Anjali Saini, Mohammed Abdelhameed, Divya Rani, Wipakorn Jevasuwan, Naoki Fukata, Premshila Kumari, Sanjay K. Srivastava, Prathap Pathi, Arup Samanta, Mrinal Dutta
Summary: A new method of introducing nanopores with spongy morphology during fabrication of flexible silicon microwires (SiMWs) is presented. The size and porosity of the MWs can be controlled by varying the concentration of the etchant, oxidant, and surfactant, as well as the diameter of SiO2 microparticles and concentration of H2O2. The mechanism behind the formation of porous and flexible nature of the SiMWs is demonstrated.
Article
Engineering, Chemical
Shuxia Qiu, Shengjun Xu, Binqi Rao, Arun S. Mujumdar, Peng Xu
Summary: This study presents a mathematical model for the hot air impingement drying of unsaturated porous materials and validates the model with experimental data. By analyzing the relationship between mesoscopic pore structures and macroscopic heat and mass transfer properties, the study provides useful guidance for improving the efficiency of impingement drying of porous materials.
JOURNAL OF FOOD ENGINEERING
(2022)
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)