Article
Chemistry, Multidisciplinary
Su Jin Kim, Eun Mi Kim, Hee Kyung Jeon, Shital Bhaskar Kale, Jeong Yeon Choi, Jin Hyeok Kim
Summary: In this study, a TiO2-alumina photocatalyst was manufactured and tested for the photolysis and conversion of acetaldehyde. The results showed that decreasing the flow rate, increasing the moisture level, and decreasing the ultraviolet wavelength increased the conversion rate of acetaldehyde. Among the heat-treatment temperatures used, the catalyst treated at 650 degrees C had the highest conversion rate. This newly manufactured TiO2-alumina photocatalyst has potential applications in air purification, and the surface treatment method demonstrated in this study can be used to fabricate other environmentally friendly materials in the future.
APPLIED SCIENCES-BASEL
(2022)
Article
Chemistry, Physical
Ayten Ates
Summary: TiO2 samples with different crystal sizes and compositions were synthesized using a sol-gel method at different calcination temperatures. Increasing calcination temperature and SCW gasification/SCW treatment decreased the surface area of anatase TiO2 due to growing crystallite size. Among anatase and rutile TiO2 samples, optimal materials for hydrogen formation from formaldehyde in SCW were found. An increase in CO2 formation in the presence of anatase TiO2 was observed compared to rutile TiO2 due to active lattice oxygen species.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Engineering, Environmental
Periyakaruppan Karuppasamy, Nagoorkani Ramzan Nilofar Nisha, Arivalagan Pugazhendhi, Sabariswaran Kandasamy, Sakthivel Pitchaimuthu
Summary: The study focused on preparing semiconducting materials like TiO2 and transition metal-doped TiO2 using a sol-gel method and characterizing them through various analyses. Among them, Zn-doped TiO2 showed the best photocatalytic efficiency in decolouring Methylene blue dye under visible light irradiation. Results indicated that Zn-doped TiO2 had a lower band gap, leading to enhanced dye degradation compared to other catalysts. UV-vis spectra and the decolouration percentage of Methylene blue showed the superior photocatalytic activity of Zn-doped TiO2.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Zannatul Mumtarin Moushumy, Mohammad Jobaer Hassan, Mohebul Ahsan, Md Mahmudul Hasan, Md Nizam Uddin, Yuki Nagao, Mohammad A. Hasnat
Summary: A series of Ce, Bi, and N co-doped TiO2 photocatalysts were prepared to remove Chlorazol yellow (CY) dye molecules from water. The 5 wt% (Ce-Bi-N) co-doped TiO2 composite catalyst showed the best catalytic activity under sunlight irradiation. The catalyst achieved 97% degradation of CY molecules within 30 minutes and followed second-order kinetics. The developed catalyst can destruct CY molecules with a maximum rate of 23.1 mu g CY g(-1) min(-1) and the photodegradation kinetics depends on the concentration of CY.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Materials Science, Multidisciplinary
Sipei Zhang, Ying Xu, Wen Zhang, Peng Cao
Summary: Cu and Y co-doped TiO2 nanoparticles were prepared using an acid-catalytic sol-gel process, resulting in a single anatase phase with reduced crystallite size. SEM observations showed uniform nanospheres being synthesized under the proposed conditions. XPS results demonstrated the presence of Cu+ and Y3+ ions. The photoactivity of the co-doped TiO2 was improved due to effective separation of electron-hole pairs, increased formation of active radicals, and increased surface area.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Engineering, Environmental
Nhung Thi-Tuyet Hoang, Anh Thi-Kim Tran, Thanh-An Le, D. Duc Nguyen
Summary: The study evaluated the photocatalytic performance of a TiO2-SiO2 film combined with glycerol in degrading methyl orange dye. The optimized conditions resulted in 91% dye removal efficiency, demonstrating the enhanced efficiency of the film in degrading the dye.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Sohrab Nasiri, Zahra Rahimirad, Mohammad Yousefi Dehaghi, Marzieh Rabiei, Reza Ebrahimi-Kahrizsangi, Arvydas Palevicius, Giedrius Janusas
Summary: Nanocomposites of TiO2-Ag-Ce with different percentages of Ag were prepared and characterized. The nanocomposite with 5%Ag showed the best catalytic performance for methylene blue.
Article
Chemistry, Physical
Qing Jin, Youlin Xiang, Lu Gan
Summary: Indoor formaldehyde pollution is a serious threat to human health, but this study developed a g-C3N4-modified TiO2 composite photocatalyst that can degrade formaldehyde released from particle boards in real-time under visible light irradiation. The g-C3N4/TiO2 coating has a lower band gap energy, enabling it to effectively capture luminous energy in the visible light region. The photocatalytic coating exhibited high efficiency in degrading formaldehyde and maintained catalytic stability in various conditions. Hydroxyl and superoxide radicals were found to be the major active species responsible for formaldehyde degradation. This study provides a practical approach for improving indoor air quality through photocatalyst surface engineering.
Article
Engineering, Electrical & Electronic
Mahubedu Khutso Ntobeng, Patrick Ehi Imoisili, Tien-Chien Jen
Summary: The vanadium sensitized silver titanium mixed metal oxides photocatalyst nanocomposite prepared through a sol-gel, hydrothermal route exhibited a large surface area and enhanced visible light absorption capacity. The photocatalyst showed tremendous photocatalytic abilities under visible light irradiation, selectively removing organic pollutants from surface water as demonstrated by gas chromatography-mass spectrometry analysis.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Chemistry, Physical
Chung-Ming Lu, Raju Kumar Sharma, Chin-Wen Wang, Nalonda Chatterjee, Wen-Chien Lee, Chien-Yen Chen
Summary: This study prepared F and I-doped TiO2 nanoparticle photocatalysts using the sol-gel method and tested their degradation efficiency on methylene-blue under simulated sunlight and LED visible-light. The particle size of the doped nanoparticles varied at different concentrations, and the F-doped TiO2 nanoparticles showed a higher removal efficiency at higher concentration.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Environmental Sciences
Huijuan Li, Yeting Yao, Xiaoyan Yang, Xusheng Zhou, Ran Lei, Sufang He
Summary: This study prepared composites of titanium (IV) oxide combined with montmorillonite (MMT) for photocatalysis application. The immobilization of TiO2 nanoparticles on MMT decreased their average size and enhanced the photocatalytic activity. The phenol degradation process was determined by HPLC, showing the conversion of phenol into maleic acid, carbon dioxide, and small molecules.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Materials Science, Ceramics
Ivo Barton, Vlastimil Matejec, Ondrej Podrazky
Summary: This paper presents a new approach to preparing capillary optical fibers using sol-gel method. A novel modification of sol-gel techniques is employed for applying layers onto the inner walls of silica tubes. Multilayer internal coatings with alternating low-index silica layers and high-index titania layers are prepared using novel materials prepared by sol-gel method. Morphology and optical properties of single layers and multilayer coatings are studied, and fibers with low optical losses below 0.02 dB/cm are successfully prepared.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Environmental Sciences
Ashwini S. Varpe, Mrinalini D. Deshpande, Dipak R. Tope, Ashok V. Borhade
Summary: CdFe2O4/Al2O3 magnetic nanocomposite photocatalyst is synthesized by sol-gel auto-combustion method, and its role as a photocatalyst is studied. The influence of Al2O3 concentration on the photocatalytic property is investigated. The 10% composite sample shows superior properties compared to other concentrations and bare CdFe2O4 nanoparticles. The degradation rate of xylenol orange dye reaches 92.29% after 30 minutes of photocatalytic reaction.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Yanting Lyu, Taka-Aki Asoh, Hiroshi Uyama
Summary: The hierarchically porous TiO2 monolith prepared using a cellulose template showed potential for water remediation, with controllable pore structures that could be adjusted by changing fabrication parameters. Its photocatalytic performance in degrading methylene blue in a flow system was evaluated.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Materials Science, Ceramics
Zhuxing Tang, Yingjie Tao, Wenjie Zhang
Summary: The low-density TiO2-GB composite materials were synthesized via a sol-gel route with the support of glass bubbles. The bandgap energies and photocatalytic performance of the composites varied with different calcination temperatures.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
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)