Article
Chemistry, Multidisciplinary
Mingyu Cui, Miao Mi, Yidong Zhang, Wei Xu, Min Wang, Rong Shao, Jianfei Ding
Summary: Supercritical CO2 enhances the dispersity and surface properties of H6P2W18O62/gamma-Al2O3 catalysts and retards catalyst deactivation. The catalyst prepared via supercritical impregnation significantly improves the conversion and selectivity of glycerol dehydration reaction, while maintaining good catalytic stability.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Agronomy
Gal Nomberg, Ofir Marinov, Eldad Karavani, Ekaterina Manasherova, Einat Zelinger, Oded Yarden, Hagai Cohen
Summary: Fruit skin reticulation, formed by suberized cells, plays an important role in fruit development. However, its impact on post-harvest traits remains unclear. In this study, cucumbers with different types of skin were compared, and it was found that the skin-cracked Sikkim cucumbers exhibited higher resilience to chilling injuries during cold storage.
POSTHARVEST BIOLOGY AND TECHNOLOGY
(2022)
Review
Agronomy
Beata Janowska, Roman Andrzejak
Summary: This review presents the results of research conducted over the years to improve the post-harvest longevity of florists' greens using growth regulators. The post-harvest longevity of florists' greens is influenced by genetics, growing conditions, and market supply conditions. Growth regulators from the CK and GA groups are used to condition florists' greens.
Article
Engineering, Chemical
Saqib Javed, Jonas Fisse, Dieter Vogt
Summary: This study investigated the kinetics of the solvent-based depolymerization of post-consumer PET waste in the presence of EtONa. Confirmation of product was carried out using various techniques, and it was found that the reaction followed a first-order reversible mechanism at higher temperatures and a heterogeneous shrinking core mechanism at lower temperatures. The kinetic evaluation revealed that the PET glycolysis reaction consists of both heterogeneous and homogeneous mechanisms, depending on the temperature.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Physical
Yanru Li, Lingyi Zhuang, Li Tan, Qiao Chen, Yuanxing Fang
Summary: Metal organic frameworks (MOFs) have unique properties for controlling reaction kinetics and are widely investigated as co-catalysts for photocatalysis. While traditionally presented in a solid state, recent studies have demonstrated MOFs in the liquid phase while maintaining their framework structure. This article focuses on the chemical principle of liquid MOF (LMOF) and discusses its applications in photocatalysis, CO2 adsorption, and other relevant fields.
Article
Green & Sustainable Science & Technology
Vanish Kumar, Sherif A. Younis, Jan E. Szulejko, Ki-Hyun Kim
Summary: This study evaluates the photocatalytic removal potential of BiOI photocatalysts in their pristine and composite forms against gaseous Hg-0. The results show promising performance in certain performance metrics, but there are still challenges and limitations to be addressed.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2023)
Article
Energy & Fuels
H. G. Gomaa
Summary: Photocatalysis is an effective process for degrading toxic compounds. However, the high processing costs have been a drawback. This study analyzed the hydrodynamics and energy consumption of a suspended catalyst photocatalytic membrane reactor under different flow conditions. An optimization approach was proposed to enhance the reactor performance by considering the coupling effects of shear and pressure. The results showed that the specific energy consumption varied with the membrane area, and oscillatory membrane design had advantages over crossflow design in terms of energy consumption and footprint.
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
(2023)
Article
Engineering, Environmental
Xiaojian Yang, Yufeng Wei, Wei Shyy, Kun Xu
Summary: The gas-solid particle two-phase flow in a fluidized bed is studied using a multi-scale algorithm that combines the gas-kinetic scheme (GKS) for the gas phase and the unified gas-kinetic wave-particle method (UGKWP) for the solid particle phase. The UGKWP seamlessly transitions between wave and discrete particle formulations based on the particle cell's Knudsen number. The algorithm captures the particle phase in different regimes with high accuracy and efficiency.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
P. V. Aleksandrov, S. I. Reshetnikov, G. A. Bukhtiyarova, A. S. Noskov Boreskov
Summary: The hydrodesulfurization of straight-run gas oils with high sulfur content has been studied using a trickle bed down-flow reactor. The possibility of producing ultra low sulfur diesel using feedstocks with high sulfur content was demonstrated. Four kinetic models were considered to predict the effect of process parameters on the sulfur content in products, and their accuracy was verified by comparing the simulation results with experimental data.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Polymer Science
R. Smera, M. Roshith, S. Ramasubramanian, Darbha V. Ravi Kumar
Summary: This article describes the immobilization of a visible light/sunlight active photocatalyst, fibrous red phosphorus (FRP), on quartz sand (QS) for efficient reduction of toxic Cr(VI) to non-toxic Cr(III). The immobilized photocatalyst in a tea bag form facilitates easy separation, re-use, and eliminates the need for post purification processes, making photocatalytic environmental remediation more cost effective.
JOURNAL OF INORGANIC AND ORGANOMETALLIC POLYMERS AND MATERIALS
(2022)
Article
Engineering, Chemical
Jingmao Wu, Hui Wang, Haotian Shen, Chang Shen, Yiming Zhu, Jianfei Wu, Hengyuan Ran
Summary: Experimental results showed that a low-level of H2O had a promoting effect on the adsorption of H-0, and high-level of H2O had an inhibiting effect. A high concentration of H2O would form a water film on the surface of sorbent traps to hinder the removal of external mass transfer on H-0.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Soil Science
Hui Zhang, Caixian Tang, Frank Berninger, Shangbin Bai, Hongquan Wang, Yixiang Wang
Summary: This study provides a comprehensive global-scale assessment of the impact of forest harvest on soil N2O flux. It found that intensive forest harvest significantly increased soil N2O flux, which lasted for approximately six years. The effect of forest type and time since harvest on soil N2O flux were also identified.
SOIL BIOLOGY & BIOCHEMISTRY
(2022)
Article
Engineering, Chemical
Caroline Goncalves, Klaiani Bez Fontana, Marcos A. R. Tenorio, Vera Lucia A. F. Bascunan, Giane G. Lenzi, Eduardo S. Chaves
Summary: Heterogeneous photocatalysis using ZnO immobilized in alginate beads as a catalyst showed high efficiency in degrading the textile dye OS-TGL, achieving over 99% degradation in optimized conditions. Additionally, the photocatalytic process allowed multiple cycles of catalyst reuse without significant loss of degradation efficiency.
DESALINATION AND WATER TREATMENT
(2021)
Review
Engineering, Environmental
Anh Thi Le, Thi Duy Hanh Le, Kuan-Yew Cheong, Swee-Yong Pung
Summary: The immobilization of ZnO-based photocatalysts on supportive substrates is an important research area in the field of organic pollutant removal. This review discusses the recent development of supportive substrates, immobilization methods, and the photocatalytic performances of the immobilized systems. Glass substrates have been widely used, but polymetric materials are emerging as promising substrates due to their stretchability, flexibility, and low cost. The hydrothermal method is favored for immobilizing ZnO-based photocatalysts due to its ability to control the size and morphology of ZnO nanostructures. The photocatalysts show satisfactory performance in solutions with a pH range of 6.5-8. Future research should focus on flexible supporting substrates, increased specific surface area for both photocatalysts and substrates, lifespan of photogenerated charge carriers, stability, and industrial-scale applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2022)
Article
Chemistry, Physical
Ibrahim Sanusi, Catherine B. Almquist
Summary: The aim of this project is to investigate the photocatalytic activity of ZnO/TiO2 composite films for the gas-phase oxidation of ethanol. The materials were characterized for their structural, morphological, and optical characteristics. The results showed that the apparent photocatalytic activity decreased as the ZnO content increased in the coupled semiconductor materials.
Article
Energy & Fuels
Jose Luiz Francisco Alves, Jean Constantino Gomes da Silva, Mariana Pires Languer, Luciane Batistella, Michele Di Domenico, Valdemar Francisco da Silva Filho, Regina de Fatima Peralta Muniz Moreira, Humberto Jorge Jose
Summary: A new opportunity for producing valuable biorefinery products can be found by integrating biochemical and thermochemical processing with municipal wastewater treatment. This study evaluates the kinetic and thermodynamic parameters from the pyrolysis of Brazilian anaerobic sewage sludge and provides insights for designing a pyrolytic processing system. The study highlights the practical importance of using anaerobic sewage sludge as a raw material for producing biofuels coupled with municipal wastewater treatment.
BIOMASS CONVERSION AND BIOREFINERY
(2022)
Article
Chemistry, Applied
Gustavo Lopes Colpani, Vitor Follmann Santos, Rubieli Carla Frezza Zeferino, Micheli Zanetti, Josiane Maria Muneron de Mello, Luciano Luiz Silva, Natan Padoin, Regina de Fatima Peralta Muniz Moreira, Marcio Antonio Fiori, Cintia Soares
Summary: Propranolol hydrochloride is a persistent and bioaccumulative pharmaceutical in the environment, with potential toxicity and adverse effects. The efficiency of TiO2-La 0.05%-CMCD nanoparticles in degrading propranolol under UV-light irradiation is higher than that of pristine TiO2, possibly due to complex formation between the beta-blocker and the oligosaccharide.
JOURNAL OF RARE EARTHS
(2022)
Article
Energy & Fuels
Tatiana Ramos Pacioni, Diniara Soares, Michele Di Domenico, Jose Luiz Francisco Alves, Elaine Virmond, Regina de Fatima Peralta Muniz Moreira, Humberto Jorge Jose
Summary: This study examines the CO2 gasification behavior of three biomass chars and associates the results with differences in the ash composition of the samples. The kinetic models used suggest that the inorganic components have a more significant impact on the gasification behavior than the biomass lignocellulosic matter.
BIOMASS CONVERSION AND BIOREFINERY
(2023)
Article
Environmental Sciences
Naiara Miotto Menino, Julia da Silveira Salla, Mariele Samuel do Nascimento, Rogerio Marcos Dallago, Rosely Aparecida Peralta, Regina F. P. M. Moreira
Summary: This study aimed to develop an adsorbent for the selective treatment of oily wastewaters. Through the preparation of a modified hydrotalcite sample, hydrophobic and magnetic characteristics were successfully achieved. The experimental results showed that the hydrophobic and magnetic hydrotalcite could effectively adsorb the simulated oily wastewater, providing convenience for subsequent treatment and separation.
ENVIRONMENTAL TECHNOLOGY
(2023)
Article
Chemistry, Applied
Maria Jaizia dos Santos Alves, Marielle Correia Nobias, Lenilton Santos Soares, Daniela Sousa Coelho, Marcelo Maraschin, Alex Basso, Regina de Fatima Peralta Muniz Moreira, Humberto Jorge Jose, Alcilene Rodrigues Monteiro
Summary: This study demonstrates for the first time that photocatalytic technology can preserve the physiological quality of cherry tomatoes during a 30-day storage period, making it a promising preservation technology for cherry tomatoes.
FOOD SCIENCE AND TECHNOLOGY INTERNATIONAL
(2023)
Article
Chemistry, Physical
Eduardo Humeres, Abil E. Aliev, Alessandra Smaniotto, Rafael Brognoli, Nito Angelo Debacher, Regina de F. P. M. Moreira, J. Arturo Santaballa, Moises Canle
Summary: Graphite microparticles were oxidized to graphene oxide (MPGO) and further modified to sulfur-modified graphene oxide (mMPGO). The presence of paramagnetic manganese ions in mMPGO and ring currents from graphene aromatic layers were found to affect the NMR signals of alkyl chains bound to mMPGO.
JOURNAL OF PHYSICAL CHEMISTRY C
(2022)
Article
Green & Sustainable Science & Technology
Alisson Lopes Freire, Humberto Jorge Jose, Regina de Fatima Peralta Muniz Moreira
Summary: Geopolymers are versatile inorganic materials with wide applications, exhibiting different properties based on formulation and fabrication processes. Raw materials used in their synthesis are important considerations. Geopolymeric materials can replace Portland cement for CO2 storage and exhibit new properties when mixed with other materials.
INTERNATIONAL JOURNAL OF GREENHOUSE GAS CONTROL
(2022)
Article
Materials Science, Multidisciplinary
Jaqueline de Oliveira Brotto, Julia da Silveira Salla, Jean Constantino Gomes da Silva, Enrique Rodriguez-Castellon, Humberto Jorge Jose, Suelen Maria de Amorim, Regina de Fatima Peralta Muniz Moreira
Summary: The aim of this study is to investigate the thermal behavior of Pinus wood pellets during torrefaction under different operational conditions and evaluate the potential application of the torrefied product in metallurgical processes. The experimental results showed that high torrefaction temperature and residence time decreased the mass yield. The best torrefaction conditions for biomass with potential application in metallurgical processes were in an inert atmosphere, at 290 degrees C and a residence time of 15 min.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Materials Science, Multidisciplinary
Mariana Schneider, Karina Cesca, Suelen Maria de Amorim, Dachamir Hotza, Enrique Rodriguez-Castellon, Regina F. P. M. Moreira
Summary: The use of nanofluids in enhanced oil recovery processes has gained attention due to the possibility to increase oil recovery from mature oil fields. Silica nanoparticles are widely used for nanofluid formulations, but there are obstacles such as stability, environmental and economic aspects, and the need for suitable large-scale production processes. This study evaluates oil recovery using silica-based nanofluids from different sources under various operational conditions, and demonstrates that silica from rice husk ash has comparable efficiency to other synthetic silica nanoparticles.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2023)
Article
Engineering, Environmental
Daniela Gier Della Rocca, Bruna Hedel, Enrique Rodriguez-Castellon, Regina F. P. M. Moreiraa
Summary: The use of ceramic membranes for microfiltration has increased due to their high performance and physical-chemical properties. However, their production is expensive. Geopolymeric membranes (GPMs) have been developed as a cheaper alternative by incorporating industrial waste. In this study, GPMs were synthesized by incorporating magnetic mining waste (MMW) and were used successfully to remove trimethoprim antibiotic from an aqueous solution.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Plant Sciences
Kamila de Cassia Spacki, Danielly Maria Paixao Novi, Verci Alves de Oliveira-Junior, Daniele Cocco Durigon, Fernanda Cristina Fraga, Luis Felipe Oliva dos Santos, Cristiane Vieira Helm, Edson Alves de Lima, Rosely Aparecida Peralta, Regina de Fatima Peralta Muniz Moreira, Rubia Carvalho Gomes Correa, Adelar Bracht, Rosane Marina Peralta
Summary: The white-rot fungus Pleurotus ostreatus was used to pretreat peach palm lignocellulosic wastes. The pretreatment significantly increased the yields of total reducing sugars and glucose from the inner sheaths, but had no effect on the peel. Scanning electron microscopy revealed structural modifications in the inner sheaths after pretreatment, but no changes were observed in the peel.
Article
Chemistry, Multidisciplinary
Priscila R. Martins, Julia S. Salla, Humberto Jorge Jose, Vivian Stumpf Madeira, Regina F. P. M. Moreira
Summary: This study aims to produce industrial-scale nanostructured hematite pellets for the removal of arsenic from wastewater. The results showed that these pelletized materials have high adsorption capacity and removal efficiency.
REVISTA VIRTUAL DE QUIMICA
(2022)
Article
Biochemistry & Molecular Biology
Thais Marques Uber, Ana Julia dos Reis Buzzo, Gidiane Scaratti, Suelen Maria Amorim, Cristiane Vieira Helm, Giselle Maria Maciel, Rosely Aparecida Peralta, Regina de Fatima Peralta Muniz Moreira, Adelar Bracht, Rosane Marina Peralta
Summary: In this study, laccase from Oudemansiella canarii was immobilized using CLEA methodology and applied in the degradation of the anthraquinonic dye RBBR. The immobilized laccase showed enhanced thermal and storage stabilities compared to the free laccase and efficiently decolourized the dye even after multiple cycles. The study also found that the immobilized laccase from O. canarii has potential applications in degrading unwanted dyes in the environment.
BIOCATALYSIS AND BIOTRANSFORMATION
(2022)
Article
Chemistry, Physical
Wiem Bouali, Muejgan Yaman, Nurgul Seferogu, Zeynel Seferogu
Summary: Novel chemosensors, including coumarin hydrazide, were synthesized and demonstrated the ability to detect cyanide ions through absorption and fluorescence turn-off response. The reaction mechanism between the sensors and the ions was determined through experimental and theoretical studies. The sensors exhibited high detection ability and effectiveness.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Parinaz Abdollahian, Hassan Heidari, Soheila Hassanzadeh, Mohammad Hasanzadeh
Summary: This study successfully synthesized various types of thiolated-graphene quantum dots (GQDs) and utilized them in a one-droplet microfluidic paper-based analytical device for the simultaneous multi-sensing of heavy metal ions. The GQDs were functionalized and stabilized on the surface of hydrophobic fiber-glass, enabling colorimetric chemosensing of ions including iron, copper, cobalt, mercury, chrome, manganese, and nickel. The results were confirmed using fluorescence spectrometry, and the platform showed potential for facile metal ion detection in human urine models and environmental fluids.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
S. L. Barrett, C. Meyer, E. Cwiklik, V Fieglein, M. Burns, J. Guerrero, W. J. Brittain
Summary: Laboratory illumination is strong enough to create a photostationary state (PSS) of amphiphilic azo-benzene compounds in water. The [cis]PSS/[trans]PSS ratios were observed to be 0.33-1.2 in D2O and 0.37-3.8 in dimethyl sulfoxide-d6. ortho-Fluoroazobenzene amphiphiles show higher cis-isomer concentration at equilibrium compared to non-fluorinated compounds due to differences in optical absorption profiles. The kinetics of isomerization were measured using UV-Vis spectroscopy and the ratio of trans-to-cis rates does not directly correlate with the observed PSS. The half-life for PSS formation is 40 minutes for fluorinated compounds and 80 minutes for non-fluorinated compounds.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Jalil Khodayari, Karim Zare, Omid Moradi, Mohammadreza Kalaee, Niyaz Mohammad Mahmoodi
Summary: In this study, an eco-friendly biocomposite (CMC/MIL/CuO) was synthesized and characterized, and its ability to decolorize Acid Blue 92 dye was investigated. The results showed that CMC/MIL/CuO can be used as a suitable photocatalyst for dye decolorization.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Bo Ma, Qian Xu, Huajun Yao, Yalin Chen, Yiyang Wang, Yunfei Yang, Hongfang Shen, Youjun Lu
Summary: This study designed an integrated structure of Cu2O@Au/Cu2O heterostructure particles, which achieved significantly enhanced photocatalytic performance by simultaneously considering the integrated structural characteristics and localized surface plasmon resonance (LSPR) effect. Experimental characterization and theoretical simulation confirmed the three-in-one synergy of the integrated heterostructure, including the LSPR effect of Au nanoparticles, the light scattering based on core-shell heterostructure, and the effective charge separation based on inter-embedded heterostructure. The concept of integrated heterostructure cooperated with LSPR effect provides a new strategy for designing future catalysts.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Robert G. H. Marks, Sarah P. Rockel, Klaus Kerpen, Holger Somnitz, Philipp R. Martin, Maik A. Jochmann, Torsten C. Schmidt
Summary: This study investigated the pH-dependent photolysis of phosphonates in aqueous solutions and analyzed the transformation products. The results showed that the photolysis rate of phosphonates was influenced by pH and light conditions. Furthermore, the carbon kinetic isotope effects varied for different types of phosphonates.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
T. M. Naren Vidaarth, S. Surendhiran, K. S. G. Jagan, S. Savitha, K. S. Balu, A. Karthik, B. Kalpana
Summary: In this study, magnesium oxide nanoparticles were synthesized using plant seed extracts, which exhibited excellent performance in removing dyes from textile water bodies. These nanoparticles also showed strong antibacterial and antioxidant properties.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Mikhail Yu. Ovchinnikov, Vyacheslav A. Antipin, Sergey L. Khursan
Summary: In this study, the recombination of separated ion-radical states (SIRS) in PAPh films was analyzed, and it was found that the contribution of X-SIRS recombination to total luminescence varies with different environments. It was also shown that the recombination of labile SIRS is independent of the nature of the atmosphere. The study theoretically substantiated that SIRS recombination can occur via the transfer of both positive and negative charges, and the efficiency of thermal activation of recombination processes depends on the ratio of radiant and conductive channels of energy transfer.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Sumaira Naeem, Tayyaba Mubashir, Mudassir Hussain Tahir, Jawayria Najeeb, Ahmed Z. Dewidar, Hosam O. El-ansary, Silas Lagat, Anthony Pembere
Summary: This study presents an alternative methodology using machine learning for the selection of novel organic molecules to develop high-performance organic solar cell devices.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
D. Thirumoolan, S. Ragupathy, S. Renukadevi, P. Rajkumar, Rajakumar S. Rai, R. M. Saravana Kumar, Imran Hasan, Mani Durai, Young-Ho Ahn
Summary: In this study, the photodegradation of brilliant green dye was studied in relation to the comparative photocatalytic activity of pure ZnO and Ni-doped ZnO/CSAC. The Ni-doped ZnO/CSAC showed a higher photocatalytic degradation rate under visible light irradiation, suggesting its potential as an effective wastewater treatment material.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Ajmal Khan, Zhidong Chang, Wenjun Li, Xiaohui Ma, Mei Dong, Liang Geng, Ghulam Yasin, Shuaib Khan, Hira Anwar
Summary: Due to its functional structure and tunable shape, 2D zeolitic imidazole framework (ZIFs) have gained significant interest in various fields. In this study, thin ZIF-8 sheets were prepared using a mixed solvent and then delaminated into single layers through physical sonication. These hexagonal sheets exhibited high stability and controlled morphology, and showed excellent performance in dye degradation compared to 3D ZIF-8 crystals.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Vitaly A. Podshibyakin, Evgenii N. Shepelenko, Leonid D. Popov, Tatyana M. Valova, Anton O. Ayt, Lyudmila G. Kuzmina, Anton V. Lisovin, Oleg N. Burov, Mikhail E. Kletskii, Alexander D. Dubonosov, Vladimir A. Bren
Summary: Bifunctional hybrids containing photochromic indolyl(thienyl) diarylethenes and an ionochromic rhodamine moiety connected by a dimethylene spacer were synthesized. These hybrids exhibit absorption at 450-455 nm and fluorescence at 560 nm in toluene. UV light triggers ring-closed non-fluorescent diarylethene formation, which can be reversed under visible light or in the dark. In the presence of H+ cation, a naked eye effect is observed with the opening of the rhodamine-spirolactam ring and a pink-crimson coloration at 561 nm accompanied by intense long-wavelength emission at 586 nm. This process is reversible by exposure to triethylamine, as confirmed by NMR experiments. The light-induced isomerizations and proton-induced transformations were explained using computational methods. Reversible switching of fluorescent properties can be achieved by light irradiation and proton.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Majid Sharifi-Rad, Hazem S. Elshafie, Pawel Pohl
Summary: The study investigated the synthesis of silver nanoparticles using Lallemantia royleana leaf extract, characterized their physico-chemical properties, and evaluated their biopharmaceutical and catalytic applications. The synthesized nanoparticles showed good stability and exhibited higher antioxidant, antimicrobial, anti-inflammatory, anti-arthritic, and cytotoxic activities compared to the leaf extract. These results provide a promising green synthesis route for silver nanoparticles with potential biomedical and catalytic applications.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Meera Moydeen Abdul Hameed, Badr M. Thamer
Summary: Security encoding using photochromism is an effective method for creating authentication substrates. A unique photochromic ink has been developed that emits light continuously under UV rays and darkness. The ink is produced by dispersing lanthanidedoped aluminate nanoparticles in a polymer binder. The resulting composite ink can be used to create transparent films on paper, and the stamped patterns become visible under UV rays, changing from colorless to green.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)
Article
Chemistry, Physical
Monika Lamoria, Rita Kakkar, Marilyn Daisy Milton
Summary: Four novel water-soluble benzimidazolium and bis-benzimidazolium salts with a fluorophore-spacer-receptor design were synthesized and demonstrated to selectively detect Fe3+ ions with large Stokes shifts. The binding mechanism and detection performance were investigated through theoretical and experimental studies.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2024)