Article
Chemistry, Multidisciplinary
Yunkang Tong, Mingle Li, Haiqiao Huang, Saran Long, Wen Sun, Jianjun Du, Jiangli Fan, Lei Wang, Bin Liu, Xiaojun Peng
Summary: Ultrasound-triggered scission of urea bonds for drug release has been demonstrated using therapeutic ultrasound. This transformation is initiated by hydroxyl radicals and occurs specifically at the cavitation bubble-liquid interface. The released drug can be selectively delivered in a physiologically relevant environment, showing great potential in cancer treatment.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Meixian Liu, Junliang Liu, Xianmo Gu, Peng Kong, Yehua Han, Xing Wang, Zhanfeng Zheng
Summary: During the photomineralization of phenolic pollutants using carbon nitride, the co-modification of hydroxyl groups and carbon vacancies can enhance the in-situ mineralization of phenol and prevent the formation of refractory polymers.
JOURNAL OF CATALYSIS
(2023)
Article
Electrochemistry
Peng Zhou, Jiafeng Wan, Xirui Wang, Jie Chen, Yuguo Gong, Ke Xu, Chuntao Liu
Summary: The combination of tea porous carbon and TiO2 metal oxide successfully improved the degradation effect of phenol. The reasonable design of the composite material utilized the advantages of the pore structure and created good channels for electron transport, while the load of metal oxide promoted more catalytic active sites.
JOURNAL OF APPLIED ELECTROCHEMISTRY
(2021)
Article
Engineering, Environmental
Boyin Yan, DongChuan Xu, Zhiquan Liu, Jiangzhou Tang, Rui Huang, Min Zhang, Fuyi Cui, Wenxin Shi, Chun Hu
Summary: The degradation of BMAA in the UV254/persulfate system follows a pseudofirst-order kinetic model, with SO4· identified as the major radical contributing to the degradation. The pH significantly affects the degradation rate, with the highest rate achieved at pH 8. However, the presence of water matrix components inhibits the degradation process.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Qiang Sun, Xuebin Hu, Qiang He, Manli Sun, Liangliang Dai, Sarfaraz Khan, Huaili Zheng
Summary: This study achieved the spatiotemporal coagulation and degradation of diclofenac sodium under visible light irradiation by modifying TiO2 nanoparticles. The modified TiO2 nanoparticles showed activated photocatalytic activity and improved photocatalytic efficiency. Additionally, it was found that the coagulant could be directly reused multiple times.
JOURNAL OF THE TAIWAN INSTITUTE OF CHEMICAL ENGINEERS
(2022)
Article
Environmental Sciences
Manning Zhang, Dulin Yin, Jinjin Guo, Huanghe Wu, Meiling Gong, Xiangdong Feng
Summary: The novel Mn-Fe-Ce/Al2O3 ternary catalyst showed improved removal rate and mineralization degree of phenol pollutants, accelerating the decomposition of ozone into hydroxyl radicals and oxidation of phenol. The catalytic activity was attributed to the high surface hydroxyl density as the active site, and the accelerated electron transfer through redox cycles of Mn2+-Mn3+-Mn4+, Fe2+-Fe3+, and Ce3+-Ce4+ shown in XPS analysis. Additionally, the catalyst maintained high catalytic activity after multiple cycles of use, making it an efficient and promising catalyst for catalytic ozonation system.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Engineering, Environmental
Yufan Chen, Christopher J. Miller, Jieli Xie, T. David Waite
Summary: In this study, it was found that the oxidation products of methyl phenyl sulfoxide (PMSO) enhance the formation of methyl phenyl sulfone (PMSO2) by complexing with Fe(III) species. This finding suggests caution in using PMSO to investigate the role of ferryl ion ([(FeO)-O-IV](2+)) in iron-based advanced oxidation processes (AOPs). Additionally, other target compounds were found to modify the reactivity of iron species through complexation and/or redox reactions. Overall, this study highlights the confounding effects of aromatic probe compounds on the reactivity of iron species in AOPs.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Roman Abrams, Mehul H. Jesani, Alex Browning, Jonathan Clayden
Summary: Intramolecular nucleophilic aromatic substitution of the anions of 2-benzyl benzanilides leads to triarylmethanes in an operationally simple manner. The reaction can proceed without electronic activation of the ring, instead being accelerated by the preferred conformation imposed by the tertiary amide tether. Additionally, a ring-expanding variant of the reaction provides a route to doubly benzo-fused medium ring lactams of 10 or 11 members.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Engineering, Environmental
Ning Chen, Danyu Huang, Guangxia Liu, Longgang Chu, Guodong Fang, Changyin Zhu, Dongmei Zhou, Juan Gao
Summary: This study found that the (OH)-O-center dot formation plays a crucial role in the degradation of PAHs during redox fluctuations, with the content of active Fe species being a key factor. Oxygenation induces the transformation of these active Fe species, affecting subsequent redox processes and organic contaminant degradation.
Article
Environmental Sciences
Bingyu Shi, Lu Zhang, Haiying Sun, Jianan Ren, Hui Wang, Hanyu Tang, Zhaoyong Bian
Summary: An efficient and stable NiO/CeO2/MnO2-modified nitrogen-doped ordered mesoporous carbon (NOMC) particle electrode was developed for the degradation of high-salt phenol wastewater. The modified ordered mesoporous carbon showed a well-maintained structure and improved electrocatalytic activity and stability due to the co-modification of NiO and CeO2.
Article
Chemistry, Multidisciplinary
Pieter J. Gilissen, Xiaofei Chen, Joep De Graaf, Paul Tinnemans, Ben L. Feringa, Johannes A. A. W. Elemans, Roeland J. M. Nolte
Summary: We report a photoswitchable iron(III) salen phosphate catalyst for enantiodivergent oxidation of prochiral aryl alkyl sulfides to chiral aryl alkyl sulfoxides. The stable (S)-axial isomer of the catalyst produced enantioenriched sulfoxides with (R)-configuration up to 75% e.e., while the photoisomerized metastable (R)-axial isomer favored the formation of (S)-sulfoxides up to 43% e.e. The maximum Delta e.e. value obtained in enantiodivergent sulfoxidation was 118%, identical to that observed in the enantiodivergent epoxidation of alkenes by a related Mn1 catalyst. This iron-based catalyst expands the range of photoswitchable enantiodivergent catalysts and shows potential for development of a catalytic system capable of writing digital information on a polymer chain in the form of chiral sulfoxide functions.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Agriculture, Multidisciplinary
Takeshi Adachi, Yusuke Suzuki, Takuo Fujisawa
Summary: The photodegradation behavior of a new anilide fungicide inpyrfluxam was studied in aqueous buffer and nitrate solutions under artificial sunlight irradiation. The degradation mainly occurred via oxidation, bond cleavage, and mineralization to carbon dioxide, with the presence of nitrate ions accelerating the process through enhanced reaction rates with hydroxyl radicals derived from nitrate photolysis.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2021)
Article
Chemistry, Physical
Jinsheng Wei, Xue Feng, Xuefeng Hu, Junhan Yang, Chen Yang, Baiyu Liu
Summary: In this study, Cu(II) doped FeOCl composites were synthesized and utilized for the degradation of phenol using photo-Fenton process. The doping of Cu(II) and the introduction of lattice defects on FeOCl surface significantly enhanced the degradation efficiency.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2021)
Article
Thermodynamics
Xincheng Zhu, Jin-Tao Chen, Chong -Wen Zhou
Summary: A systematic theoretical study is conducted to explore the kinetics and thermochemistry effects of C2 to C6 alkenes reacting with OH radical. The study optimizes the geometries and frequencies of various species involved and calculates rate constants for different reaction channels. The results provide guidance for the development of alkene combustion models.
COMBUSTION AND FLAME
(2022)
Article
Thermodynamics
Dapeng Liu, Binod Raj Giri, Milan Szori, Bela Viskolcz, Lam K. Huynh, Aamir Farooq
Summary: The study investigated the hydrogen abstraction reactions of 1,3- and 1,4-cyclohexadienes by OH radicals, revealing similar reactivity towards OH radicals at high temperatures with weak positive temperature dependence. The measured rate coefficients provide valuable data for improving the performance of oxidation kinetic models of C-6 cyclic hydrocarbons.
PROCEEDINGS OF THE COMBUSTION INSTITUTE
(2021)
Article
Engineering, Chemical
Erika Szabados, Andrea Jobbagy, Andras Jozsef Toth, Peter Mizsey, Gabor Tardy, Cesar Pulgarin, Stefanos Giannakis, Erzsebet Takacs, Laszlo Wojnarovits, Magdolna Mako, Zeno Trocsanyi, Antal Tungler
PERIODICA POLYTECHNICA-CHEMICAL ENGINEERING
(2018)
Article
Environmental Sciences
LaszlO Szabo, Viktoria Mile, Dora J. Kiss, Krisztina Kovacs, Tamas Foldes, Tumas Nemeth, Tunde Toth, Renata Homlok, Gyorgy T. Balogh, Erzsebet Takacs, Laszlo Wojnarovits
Article
Engineering, Environmental
G. Sagi, K. Szabacsi, L. Szabo, R. Homlok, K. Kovacs, C. Mohacsi-Farkas, S. D. Pillai, E. Takacs, L. Wojnarovits
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
(2018)
Article
Chemistry, Multidisciplinary
Laszlo Szabo, Orsolya Gyenes, Julia Szabo, Krisztina Kovacs, Andras Kovacs, Gabriella Kisko, Agnes Belak, Csilla Mohacsi-Farkas, Erzsebet Takacs, Laszlo Wojnarovits
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2018)
Article
Chemistry, Physical
Anna Tegze, Gyuri Sagi, Krisztina Kovacs, Renata Homlok, Tunde Toth, Csilla Mohacsi-Farkas, Laszlo Wojnarovits, Erzsebet Takacs
RADIATION PHYSICS AND CHEMISTRY
(2018)
Article
Chemistry, Physical
Gyuri Sagi, Aniko Bezsenyi, Krisztina Kovacs, Szandra Klatyik, Bela Darvas, Andras Szekacs, Laszlo Wojnarovits, Erzsebet Takacs
RADIATION PHYSICS AND CHEMISTRY
(2018)
Article
Environmental Sciences
Gyuri Sagi, Aniko Bezsenyi, Krisztina Kovacs, Szandra Klatyik, Bela Darvas, Andras Szekacs, Csilla Mohacsi-Farkas, Erzsebet Takacs, Laszlo Wojnarovits
SCIENCE OF THE TOTAL ENVIRONMENT
(2018)
Review
Environmental Sciences
Laszlo Wojnarovits, Tunde Toth, Erzsebet Takacs
CRITICAL REVIEWS IN ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2018)
Review
Environmental Sciences
Laszlo Wojnarovits, Erzsebet Takacs
Article
Chemistry, Physical
Anna Tegze, Gyuri Sagi, Krisztina Kovacs, Tunde Toth, Erzsebet Takacs, Laszlo Wojnarovits
RADIATION PHYSICS AND CHEMISTRY
(2019)
Article
Environmental Sciences
Georgina Rozsa, Akos Fazekas, Mate Nafradi, Tunde Alapi, Krisztina Schrantz, Erzsebet Takacs, Laszlo Wojnarovits, Andreas Fath, Thomas Oppenlaender
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2019)
Article
Chemistry, Physical
Georgina Rozsa, Mate Nafradi, Tunde Alapi, Krisztina Schrantz, Laszlo Szabo, Laszlo Wojnarovits, Erzsebet Takacs, Antal Tungler
APPLIED CATALYSIS B-ENVIRONMENTAL
(2019)
Article
Chemistry, Physical
Aniko Bezsenyi, Gyuri Sagi, Magdolna Mako, Gyorgy Palko, Tunde Toth, Laszlo Wojnarovits, Erzsebet Takacs
RADIATION PHYSICS AND CHEMISTRY
(2020)
Article
Green & Sustainable Science & Technology
Libing Chu, Jianlong Wang, Chuanhong Chen, Yunpeng Shen, Shijun He, Laszlo Wojnarovits, Erzsebet Takacs, Youxue Zhang
Summary: Ionizing irradiation was used to treat antibiotic fermentation residues. Gamma irradiation was more effective than electron beam in decomposing DOCPC, with oxidation by center dot OH being the main mechanism. The relative abundance of the beta-lactam resistance gene cphA was reduced by 57% after 50 kGy of ionizing irradiation.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Engineering, Environmental
Laszlo Szabo, Julia Szabo, Erzsebet Illes, Andras Kovacs, Agnes Belak, Csilla Mohacsi-Farkas, Erzsebet Takacs, Laszlo Wojnarovits
CHEMICAL ENGINEERING JOURNAL
(2017)
Article
Chemistry, Physical
A. Khallouqi, A. Halimi, O. El Rhazouani
Summary: A pediatric head phantom made of epoxy resin was used to evaluate radiation exposure in CT scans. The phantom demonstrated dosimetric properties comparable to commercially available phantoms, making it a practical and economical option for assessing radiation dose in children.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
M. Y. Shoeib, Doaa A. Ahmed, A. F. Abd-Elraheem
Summary: The research aims to measure and analyze the levels of radon concentration, radium concentration, and radon exhalation rates in geopolymer cement mixes, and assess their impact on indoor air quality. Results indicate that geopolymer cement materials are safe for use in construction, except for specific mixes.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
M. J. Leotlela
Summary: This article presents the results of radiochemical events/processes that occur when water is exposed to ionising radiation of charged particles (beta and alpha-particles). The idea of cogeneration becomes even more lucrative if we consider that hydrogen energy generation is clean (also known as green energy) because of its insignificant contribution to environmental pollution. These results supplement the fluctuation in effective dose theory/hypothesis of a previous study on time-dependent variations in the radiological health impact of an interim SNFS facility presented in 2021 (Leotlela, 2021).
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Vyacheslav Ivanovich Pavlenko, Roman Vladimirovich Sidelnikov, Vitaly Valerievich Kashibadze, Mikhail Igorevich Dobynde, Dmitry Alexandrovich Kartashov, Vyacheslav Alexandrovich Shurshakov
Summary: This work explores the possibility of using a polymer composite to protect against neutron radiation in space conditions. The study shows that the proposed polymer composite has high structural properties necessary for use in space. Monte Carlo simulation is used to evaluate the neutron radiation passage through the material. The results demonstrate that the protective layer made of the polymer composite is thinner and more suitable for spacecraft, which is crucial due to limited space on board.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Islam G. Alhindawy, M. I. Sayyed, Dalal Abdullah Aloraini, Aljawhara H. Almuqrin, Mohammad S. Alomar, Gaber A. Elawadi, K. A. Mahmoud
Summary: This study investigated the effects of Neodymium (III) nitrate hexahydrate and lanthanum nitrate hexahydrate on the structural and radiation shielding properties of zircon mineral, and a new La/Nb-doped ZrO2 nanocomposite was fabricated. Experimental techniques such as energy-dispersive X-ray, scanning electron microscope, transmission electron microscopy, and X-ray diffraction pattern were used to analyze the structure and composition of the fabricated nanocomposites. Monte Carlo simulation was employed to evaluate the gamma-ray shielding properties. The results showed that the fabricated composites had good shielding characteristics, with a shielding capacity of 30-50% compared to pure lead in the intermediate energy range of 0.244-2.506 MeV.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Hassan Salah, Mohammed Alkhorayef, Layal Jambi, Mohammed Almuwanis, Abdelmoneim Sulieman
Summary: Cardiovascular nuclear medicine imaging examinations expose patients to high doses of ionizing radiation. This study assessed the radiation doses and public exposure in cardiac rest and stress SPECT scans. The effective dose from cardiac stress was higher than previous studies, which may be influenced by clinical indication imaging protocols and radiation safety measures.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Leandro Barbosa da Silveira Gatto, Delson Braz, Leonardo Pacifico, Paulo Travassos, Luis Alexandre Goncalves Magalhaes
Summary: This study evaluated the mean glandular dose (MGD) in mammography using a computed radiography (CR) system with a solid-state detector. Irradiations and simulations were conducted to determine the MGD and spectra for the same conditions. The results showed that the glandular dose was below the acceptable levels and the spectra were mostly in accordance with the literature.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Mawya Khafaji, Rashid Barnawi, Salma Amoudi, Hassan Gabbani, Rayan Alhazmi, Rayan Ahyad, Khalid Alsafi, Khuld Saeedi, Hassan Salah, Nissren Tamam, David Bradley, Sarah Albahiti, Abdelmoneim Sulieman
Summary: This study aimed to calculate typical values for common pediatric studies at King Abdulaziz University Hospital and compare them with other studies. The results showed that radiation dose levels in pediatric CT examinations were generally lower compared to other studies.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Faisal Almisned, Iskender Akkurt, Nurdan Karpuz
Summary: In this study, cross sections of medical radioisotopes were calculated using level density models. The results were compared with experimental data and it was found that the GSM level density models generally yielded consistent conclusions.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Shokufeh Saeid, Neda Mollakhalili-meybodi, Fateme Akrami Mohajeri, Farzan Madadizadeh, Elham Khalili Sadrabad
Summary: This study found that gamma irradiation significantly reduces the saponin and phytic acid content of quinoa. At a dose of 2.5 kGy, it can effectively reduce saponin and phytic acid without significantly damaging the antioxidant compounds.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Maria Demeter, Ion Calina, Anca Scarisoreanu, Valentina Mitran, Marcela Popa, Anisoara Cimpean, Mariana Carmen Chifiriuc, Marin Micutz, Elena Matei, Bogdana Mitu
Summary: Novel biocompatible composite hydrogels with good elastic and antimicrobial properties were synthesized by e-beam cross-linking using chitosan, water-soluble polymers, and silver nanoparticles (AgNP). The composite hydrogels showed high stability, absorption capability specific to infected wounds, and biocompatibility. The antimicrobial activity was influenced by the amount of AgNP and cross-linking degree, with significant inhibition against Gram-negative bacteria.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Anuor AT. Ayoub, Yushou Song, Mamoun IA. Sagiroun
Summary: This paper presents an assessment of the radiological hazard for humans from nuclear power plant effluent released into a river under normal operation scenarios. The study concludes that the radiological hazard from this effluent is minimal and within acceptable limits according to international standards. It also highlights the potential hazards related to the higher concentration of 137Cs in sediments over time.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Irabati Chakraborty, Nidhi Sinha, Bobby Antony
Summary: This article investigates the electron impact ionization of prebiotic molecules within the interstellar medium. By calculating the electron impact ionization cross section, the study provides insights into the chemistry of these molecules and their interaction with electrons, which play a vital role in the emergence of life's essential building blocks.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
C. V. Vishnu, Antony Joseph
Summary: This study investigated the gamma-ray shielding properties of composite materials made from natural rubber with different proportions of Barium Tungstate. The addition of Barium Tungstate significantly improved the characteristics of gamma radiation shielding. The experimental measurements showed good agreement with theoretical calculations obtained from simulation results.
RADIATION PHYSICS AND CHEMISTRY
(2024)
Article
Chemistry, Physical
Derya Mutlu, Idris Karagoz, Harun Sepetcioglu, Urkiye Akar Tarim, Orhan Gurler
Summary: This study examined the properties of epoxy composites with dendritic copper particles and found that the addition of copper particles improved the electrical conductivity and mechanical properties of the composites. The glass transition temperature of the composites could be adjusted by varying the copper particle ratio. The study also evaluated the shielding properties of epoxy-based composites against gamma radiation and found that the addition of copper particles significantly altered the microstructure and mechanical properties of the composites.
RADIATION PHYSICS AND CHEMISTRY
(2024)
