Article
Materials Science, Multidisciplinary
Yuanting Wu, Senmao Ren, Xiaojing Chang, Xinmeng Zhang
Summary: This study demonstrated the preparation of TiO2-ZrO2-SiO2 nano-powders to enhance the synergistic effect of adsorption and degradation in photocatalytic materials. The TiO2-ZrO2-SiO2 system showed excellent photocatalytic performance and adsorption ability, with SiO2 acting as an adsorbent and TiO2-ZrO2 acting synergistically as a photocatalyst. The enhanced photocatalytic ability was attributed to factors such as accelerated mass transfer, narrowed bandgap, and effective charge separation rate. The synergy effect between adsorption and photocatalysis was evaluated using the synergy factor beta, showing remarkable synergistic effect in the TiO2-ZrO2-SiO2 compound system.
Article
Materials Science, Paper & Wood
Andrey Zdravkov, Maria Listratenko, Stanislav Gorbachev, Iraida Osovskaya, Andrey Kanaev, Nikolai Khimich
Summary: Cellulose is used as a template agent to structure anatase TiO2 particles, forming MCC-TiO2 composite photocatalyst with organic-inorganic structures preserved. Materials prepared in caproic acid solvent showed higher photocatalytic activity, explained by the complementary nature of organic and inorganic components.
Article
Materials Science, Ceramics
Chengxing Zhu, Zhou Zheng, Feng Cao, Yang Xiang, Zhihang Peng
Summary: The study successfully fabricated Al(2)O(3)fiber-reinforced silica matrix composites using the traditional sol-gel process, and investigated their mechanical properties under high temperatures. The composites exhibited outstanding tensile and flexural strength at high temperatures, with the ability to maintain high tensile strength even at 1300 degrees C. Additionally, the composites displayed ductile fracture after tensile tests and brittle fracture after heat treatment without the formation of new phases.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
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
Chemistry, Inorganic & Nuclear
Luis Roberto Ruiz-Ramirez, Jonatan Torres-Perez, Nahum Medellin-Castillo, Simon Yobanny Reyes-Lopez
Summary: The contamination and dispersion of antibiotics through sewage treatment plant effluents is causing the emergence of resistant bacteria, leading to a health emergency. In order to eliminate antibiotics in effluents, advanced oxidation processes, especially photocatalysis, have been used for their efficient degradation. In this study, SiO2-TiO2 fibers with a cylindrical morphology and smooth surface were obtained using sol-gel and electrospinning techniques. By doping the fibers with silver, their photocatalytic properties were enhanced, and the degradation percentage of oxytetracycline increased from 65% to 90% in 7 hours. The improved performance is attributed to the decrease in the banned band energy of SiO2-TiO2 fibers from 3.1eV to 2.5eV due to silver doping.
SOLID STATE SCIENCES
(2023)
Article
Chemistry, Physical
Yuanting Wu, Mengyao Guan, Xiaojing Chang, Jinrong Wang, Shuming Xu
Summary: We constructed a homogeneous double-layer TiO2-ZrO2-SiO2 photocatalyst with multi-heterojunction (D-TZS) using a simple sol-gel method, which effectively improves the photocatalytic property. By investigating various factors, we found that D-TZS can degrade Rh B by about 99.6% within 40 minutes and almost completely degrade it within 60 minutes. This is attributed to the homogeneity, multiple heterojunctions, and oxygen vacancies of D-TZS.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Chemistry, Multidisciplinary
Manh-Cuong Le, Thu-Huong Le, Thanh-Huyen Bui Thi, Quang-Dat Nguyen, Thanh-Ha Do Thi, Minh-Nguyet Tran Thi
Summary: The addition of SiO2 in the TiO2/SiO2 nanocomposite significantly enhances the photocatalytic and antibacterial abilities of the silicate coating, with the best performance observed at a SiO2 content of 15%. This is attributed to the larger surface area provided by TiO2/SiO2 Nc (15%) in the W silicate coating, which increases centers for absorption, photocatalytic reactions, and contact between the sample and bacteria.
FRONTIERS IN CHEMISTRY
(2021)
Article
Chemistry, Physical
Z. Hayati, B. Hoomehr, F. Khalesi, K. Raeissi
Summary: Titanium dioxide-silica composite nanoparticles were synthesized using a verified Stober sol-gel method. The resulting nanoparticles consisted of titanium dioxide cores surrounded by ultrafine silica particles, forming a thin shell. These nanoparticles were deposited on a stainless steel substrate via electrophoretic deposition to enhance its biological response. The presence of a silica shell increased the surface roughness, eliminated cracks, and improved the adhesion and barrier performance of the coating.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Materials Science, Multidisciplinary
Shumaila Islam, Adil Alshoaibi, Hazri Bakhtiar, Kawther Alamer, Javed Mazher, Zakia Hassan Alhashem, Mohammad Rafe Hatshan, Shrouq H. Aleithan
Summary: Due to polluted water remediation, semiconductor nano photocatalysis has been considered as a promising approach to address the issue. However, the slow reaction rates and high electron-hole recombination have hindered their large-scale applications. In this study, heterogeneous nano photocatalysts, such as sol-gel-based mesoporous titania nanoparticles (TNPs) and silica-titania nanocomposite (STNC) supported with CdTe (CdTe/STNC), were synthesized for photocatalytic applications. The CdTe/STNC catalyst exhibited a large surface area and pore size distribution, and demonstrated high photocatalytic activity with methylene blue degradation of 95% after 180 min of ultraviolet radiation.
MATERIALS RESEARCH BULLETIN
(2023)
Article
Materials Science, Ceramics
M. A. M. L. Jesus, A. M. Ferreira, L. F. S. Lima, G. F. Batista, R. V. Mambrini, N. D. S. Mohallem
Summary: Micro-mesoporous TiO2/SiO2 nanocomposite powders were successfully synthesized using the sol-gel process, with Si60Ti40 powders exhibiting the highest specific surface area. Si80Ti20 powders showed better degradation of quinoline in the presence of H2O2 compared to pure sol-gel TiO2 powders, attributed to small TiO2 anatase crystallite size, high dispersion, great specific surface area, and formation of Ti-O-Si bond.
CERAMICS INTERNATIONAL
(2021)
Article
Engineering, Environmental
Luxia Yin, Jiacheng Xu, Bo Zhang, Leigang Wang, Wanyi Tao, Xiao Teng, Wensheng Ning, Zekai Zhang
Summary: A simple and environmentally friendly method was used to prepare highly dispersed CeO2/SiO2 aerogel composites with different molar ratios of Si/Ce, achieving oxidation of Ce3+ species into Ce4+ species. The adsorption desulfurization performance of CeO2/SiO2 was investigated for thiophenic compounds, showing best results in simulated gasoline with an effective removal of sulfur compounds.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Multidisciplinary Sciences
Bruna Teixeira da Fonseca, Eliane D'Elia, Jose Marcio Siqueira Junior, Sanair Massafra de Oliveira, Kelly Leite dos Santos Castro, Emerson Schwingel Ribeiro
Summary: The SiO2/TiO2/Nb2O5 material was characterized by various techniques, showing an enhancement of crystalline order with the increase of thermal treatment temperature, successful insertion of Ti and Nb atoms into the silica matrix, and high dispersion of metals on the materials surface confirmed by different analyses.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Environmental
Fengwei Huang, Huimin Hao, Wenlong Sheng, Xianjun Lang
Summary: By assembling light-harvesting molecules like ARS onto TiO2/SiO2 and conducting reactions under specific conditions, selective aerobic oxidation of sulfides has been achieved. The abundant surface hydroxyl groups of SiO2 compared to TiO2 can improve selectivities for sulfoxides.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Materials Science, Ceramics
Manon Besancon, Yanhui Wang, Noellie Ylla, Valentin Cinquin, Hubert Mutin, Johan Alauzun, Eliane Espuche, Veronique Bounor-Legare
Summary: An original method of synthesizing polypropylene/titanium dioxide (PP/TiO2) composites by combining non-hydrolytic sol-gel chemistry and reactive extrusion was reported. The synthesis involved the reaction between titanium alkoxide as a titanium dioxide precursor and an acid anhydride as an oxygen donor at high temperatures in alkane liquid medium and molten polypropylene. The resulting composite showed uniform particle distribution with an average particle size of around 700 nm.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
Ali Ihsan Kaya
Summary: This study aimed to investigate the mechanical properties of new materials produced by combining TiO2, ZnO, SiO2, and Al2O3 under pressure using the hot pressing technique. The materials were characterized using SEM, EDS, and XRD analyses, and their microhardness and tribological properties were studied. The results showed that increasing the alumina content did not significantly affect the XRD analysis, while SEM and EDS analyses revealed a two-phase structure with complex boundaries. Wear tests indicated that the depth and width of the wear track increased with the wear load. Moreover, the Ti55Si15Zn20Al10 material had the highest weight loss, and increasing the Al2O3 content reduced the weight losses. The microhardness value generally increased with the alumina content in the compounds.
Article
Spectroscopy
A. Jagannatha Reddy, R. Hari Krishna, B. M. Nagabhushana, M. K. Kokila, H. Nagabhushana, C. Shivakumara, R. P. S. Chakradhar
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2015)
Article
Chemistry, Physical
B. Daruka Prasad, H. Nagabhushana, K. Thyagarajan, S. C. Sharma, C. Shivakumara, N. O. Gopal, B. M. Nagabhushana, Shyue-Chu Ke, R. P. S. Chakradhar, K. R. Prabhakara
JOURNAL OF ALLOYS AND COMPOUNDS
(2016)
Article
Chemistry, Physical
G. Prasad, R. P. S. Chakradhar, Parthasarathi Bera, A. Anand Prabu
SURFACE AND INTERFACE ANALYSIS
(2017)
Article
Chemistry, Physical
G. Prasad, R. P. S. Chakradhar, Parthasarathi Bera, A. Anand Prabu, C. Anandan
SURFACE AND INTERFACE ANALYSIS
(2017)
Article
Thermodynamics
R. Manjula, N. V. Raju, R. P. S. Chakradhar, Ekwipoo Kalkornsurapranee, Jobish Johns
INTERNATIONAL JOURNAL OF THERMOPHYSICS
(2018)
Article
Chemistry, Physical
N. Sivasankara Reddy, R. Viswanatha, R. P. S. Chakradhar, C. Narayana Reddy
JOURNAL OF ALLOYS AND COMPOUNDS
(2017)
Article
Materials Science, Textiles
R. Manjula, N. V. Raju, R. P. S. Chakradhar, Jobish Johns
JOURNAL OF NATURAL FIBERS
(2018)
Article
Materials Science, Multidisciplinary
R. P. S. Chakradhar, G. Prasad, K. Venkateswarlu, Meenu Srivastava
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
(2018)
Article
Materials Science, Multidisciplinary
A. V. Lalitha Phani, K. Chandra Sekhar, R. P. S. Chakradhar, M. Narasimha Chary, Md Shareefuddin
MATERIALS RESEARCH EXPRESS
(2018)
Article
Materials Science, Coatings & Films
Meenu Srivastava, Mahesh Jadhav, Chethan, R. P. S. Chakradhar, M. Muniprakash, Sheela Singh
SURFACE & COATINGS TECHNOLOGY
(2019)
Article
Materials Science, Coatings & Films
Deepak Davis, Sheela Singh, R. P. S. Chakradhar, Meenu Srivastava
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2020)
Article
Materials Science, Coatings & Films
R. P. S. Chakradhar, G. Chandra Mouli, Harish Barshilia, Meenu Srivastava
Summary: This study aimed to improve the corrosion resistance of two Mg alloys (AZ31B and AZ91) by using aluminum coatings deposited via a low pressure and temperature cold spray process. The results showed that the corrosion resistance increased with immersion time due to the formation of a protective oxide layer on the surface, making cold-sprayed aluminum coatings a promising candidate for enhancing the corrosion resistance of AZ31B and AZ91 Mg alloys compared to other thermal spray processes.
JOURNAL OF THERMAL SPRAY TECHNOLOGY
(2021)
Article
Chemistry, Physical
R. V. Lakshmi, Parthasarathi Bera, R. P. S. Chakradhar, Balamati Choudhury, Shital Patangrao Pawar, Suryasarathi Bose, Raveendranath U. Nair, Harish C. Barshilia
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2019)
Proceedings Paper
Materials Science, Multidisciplinary
B. R. Nagabushana, M. Vishwas
MATERIALS TODAY-PROCEEDINGS
(2018)
Proceedings Paper
Physics, Applied
A. B. Sharma, S. K. Sharma, M. Vishwas, K. Narasimha Rao
ADVANCED MATERIALS AND RADIATION PHYSICS (AMRP-2015)
(2015)
Article
Spectroscopy
Zh. E. Ozbekova, A. A. Abdyldaev, A. A. Kulmyrzaev
Summary: This study compared two drying methods for cow and yak muscles, finding that freeze drying caused less discoloration. Additionally, analysis of fluorescence spectra allowed for accurate prediction of chemical composition and color characteristics of the muscles.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Leo Mandic, Ivan Ljubic, Iva Dzeba
Summary: In this study, a combined experimental and computational approach was used to investigate the photoexcitation and photodegradation mechanisms of Doxazosin (DOX). The results provide valuable insights into the primary events following the photoexcitation of DOX and its potential applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiufeng Wang, Yao Jin, Wenhui Ai, Siqi Wang, Zhiqing Zhang, Ting Zhou, Fang Wang, Guodong Zhang
Summary: This study successfully synthesized near infrared fluorescence Ag2S quantum dots (QDs) and developed a dual-mode sensor for sulfide anion using the excellent oxidase-like characteristics of manganese dioxide (MnO2) nanosheets. The sensor showed a wider detection range, higher sensitivity, and shorter reaction time, making it suitable for highly selective detection of sulfide in different concentration ranges.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yafei Li, Yanming Ma, Chuantao Zheng, Di Yu, Lien Hu, Shuo Yang, Fang Song, Yadan Li, Shuanghai Liu, Zhanrui Zhang, Yu Zhang, Yiding Wang, Frank K. Tittel
Summary: To effectively monitor gas explosion and coal spontaneous combustion in coal mine, an intrinsically safe and explosion-proof dual-gas sensor system was developed for methane (CH4) and carbon monoxide (CO) measurement. The system achieved different measurement ranges using laser scanning and gas cells, and improved stability and accuracy through gas pre-treatment and temperature compensation algorithm.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Pei-Rong Chen, Li-Kang Chu
Summary: In this study, the hydrates of glyoxal were investigated using infrared absorption spectrometry. The results showed that at low concentrations, glyoxal mainly exists as monomeric dihydrate. These findings provide suitable detection windows for further research on the roles of glyoxal and its hydrates in atmospheric and aerosol chemistry, as well as the relevant reaction kinetics.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Nichole O'Neill, Thamires A. Lima, Fabio Furlan Ferreira, Nicolas J. Alvarez, Reinhard Schweitzer-Stenner
Summary: This study determines the main fibril axis of GHG gel-forming fibrils using various techniques and compares the results with simulated data. The analysis suggests that the hydrophobic xz-surfaces of GHG fibrils could be a good target for the adsorption of hydrophobic drugs.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Mengyuan Liu, Hanchuang Zhu, Yikun Fang, Caiyun Liu, Xinke Li, Xiaohui Zhang, Lixue Ma, Kun Wang, Miaohui Yu, Wenlong Sheng, Baocun Zhu
Summary: ABHS is an efficient fluorescent probe that can accurately and sensitively detect Al3+ with strong resistance to interference. It also demonstrates excellent detection and imaging capabilities in complex real samples.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Ahmed S. El-Shafie, Evana Rahman, Yasser Gadelhak, Rehab Mahmoud, Marwa El-Azary
Summary: The recycling of waste mandarin peels into biochar (MRBC) has been used as a high performance and cost-effective adsorbent for treating polluted wastewater effluents. Batch adsorption studies were conducted to analyze the adsorption competency of MRBC on two dyes, methylene blue (MB) and basic fuchsin (BF), either in individual solutions or binary combinations. The results showed that MRBC was capable of effectively removing a high percentage of both dyes. However, the adsorption capacity decreased when the dyes were combined. The cost estimation of MRBC production and wastewater treatment indicated that both were relatively low.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Anindita Bhatta, Jahnabi Upadhyaya, Dipak Chamlagai, Lincoln Dkhar, Pynskhemborlang T. Phanrang, Mohan Rao Kollipara, Sivaprasad Mitra
Summary: Derivatives of thiazole-pyrazole fused benzo-coumarin compounds were synthesized and their photophysical properties were investigated. The synthesized coumarin compounds showed potential as therapeutic agents for Alzheimer's disease, inhibiting acetylcholinesterase activity. The presence of human serum albumin was found to affect the inhibition activity.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yongwei Duan, Quancheng Liu, Yiju Zhu, Qi Zhang, Xiaohui Duan, Hu Deng, Liping Shang
Summary: In this study, the phase transition of CL-20 was observed using terahertz spectroscopy, and quantum chemical calculations were employed to analyze the vibrations. The results indicated changes in the vibrations of CL-20 before and after phase transition.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yuefeng Gao, Sai Xu, Baojiu Chen
Summary: This study synthesized Cs2NaInCl6 nanocrystals co-doped with Sb3+ and Tb3+ ions as probes for copper ions detection in lubricating oil. The introduction of Sb3+ effectively reduced the band gap of the host material and enabled energy transfer pathway for Tb3+ emission. The doped Tb3+ ions resulted in the suppression of emission due to electron transfer. The Cs2NaInCl6: 2.5 %Sb3+, 40 %Tb3+ NCs exhibited superior sensitivity and selectivity for copper ions detection.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Yu Liu, Yue Zhang, Changyao Liu, Ce Wang, Baocai Xu, Li Zhao
Summary: A highly sensitive detection platform for heparin was developed using a cationic fluorescent dye (cresyl violet acetate) as a fluorescence probe. The platform demonstrated high selectivity towards heparin and achieved detection in both HEPES solution and serum.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Lopamudra Roy, Nivedita Pan, Susmita Mondal, Ria Ghosh, Md. Nur Hasan, Neha Bhattacharyya, Soumendra Singh, Kallol Bhattacharyya, Arpita Chattopadhyay, Samir Kumar Pal
Summary: The study focuses on the interaction between reactive oxygen species (ROS) and a spectroscopic probe called Rose Bengal (RB), encapsulated in nanoscopic sodium dodecyl sulphate (SDS) micelles and entrapped in microscopic nylon 66 solid matrix. The research demonstrates efficient interaction between ROS and RB-SDS, and investigates the mechanism of hydroxyl radicals generation. Based on these findings, a prototype device utilizing RB embedded in a nylon thin film for quantification of ROS in extracellular fluids and food materials was developed.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Xiaosong Sun, Qihao Cui, Wenyue Dong, Qian Duan, Teng Fei
Summary: Conjugated porous polymers (CPPs) are promising sensing materials and their application in aqueous media is limited. In this study, we synthesized CPPs with porous structure and prepared nanoparticles, enabling efficient photoluminescence sensing of nitroaromatic explosives in aqueous phase.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
Article
Spectroscopy
Maria Cristina Caggiani, Germana Barone, Paolo Mazzoleni
Summary: Raman spectroscopy is commonly used for studying glassy materials in cultural heritage, but it is more difficult to interpret the spectra and apply the technique with portable instruments. In contrast, diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) can be used in archaeometric investigations as it is portable and non-invasive. However, there is limited application of this technique to historical glasses. This exploratory work demonstrates the potential of DRIFTS, in combination with portable X-ray Fluorescence (pXRF) and EDS microanalyses, for studying the composition and alteration of glass samples in cultural heritage.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2024)
