Article
Engineering, Environmental
Wencai Cheng, Huiping Tang, Tang Kai, Ruixuan Zhao, Junfeng Wang, Congcong Ding
Summary: This research investigates the effect of different anions on the removal of UO22+ in Mg-Al layered double hydroxide (LDH). It is found that different anions have different removal capacities, and the mechanism involves changing the interlayer structure and increasing active sites in LDH.
JOURNAL OF HAZARDOUS MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Z. Tahsiri, M. Niakousari, S. M. H. Hosseini, M. Majdinasab
Summary: A magnetic nanoparticle coated with manganese-aluminum layered double hydroxide (Fe3O4/Mg-Al-CO3-LDH) was used as a porous support for the immobilization of ficin enzyme. The results showed that the Fe3O4/Mg-Al-CO3-LDH had better dispersion due to its core and shell structure. Ficin had a strong affinity for the magnetic LDH support, and the immobilized enzyme could be easily recovered by magnetic interaction. The storage stability of ficin on the Fe3O4/Mg-Al-CO3-LDH was also higher compared to other supports.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Materials Science, Multidisciplinary
Chanagun Wongburapachart, Phuwadej Pornaroontham, Kyusung Kim, Pramoch Rangsunvigit
Summary: Photocatalysis is an eco-friendly technology that can contribute to achieving the Sustainable Development Goals. However, conventional photocatalysts have limitations such as slow kinetics, limited excitation wavelengths, and environmental restrictions. This study focuses on the development of a photo-chargeable photocatalyst that can operate even in the absence of light, and investigates the effects of synthesis conditions on its photocatalytic properties.
Article
Chemistry, Physical
Sonchai Intachai, Teruyuki Nakato, Nithima Khaorapapong
Summary: The study investigated the decoration of zinc oxide nanorods on the layered structure of low carbonate NiAl-layered double hydroxide using hydrothermal method followed by calcination. It was found that the addition of zinc oxide enhanced the photocatalytic degradation of methyl orange, and the band gap energy value of the products was dependent on the amount of zinc oxide.
APPLIED CLAY SCIENCE
(2021)
Article
Engineering, Chemical
Ying-Jiao Li, Lin-Di Xue, Yi-Dong Zhang, Liang-Liang Zhang, Guang-Wen Chu, Bao-Chang Sun, Jian-Feng Chen
Summary: This study explores the formation mechanism of Ni-Al layered double hydroxide (NiAl-LDH) synthesized by coprecipitation. Furthermore, NiAl-LDH is prepared in a rotating packed bed (RPB) under different rotation speeds, and results show that increasing the rotation speed decreases the lateral size and thickness of NiAl-LDH due to accelerated nucleation. Additionally, the Ni/mixed metal oxides (MMO) catalysts derived from NiAl-LDH exhibit higher MA conversion with larger surface area and smaller nickel particle size.
Article
Engineering, Electrical & Electronic
Vijayalaxmi Thite, Sushama M. Giripunje
Summary: The study focused on the photoluminescent properties of Carbonate intercalated Zn-Fe layered double hydroxide colloids in formamide, revealing that surface charge density and surface defects are the main factors affecting photoluminescence in LDH colloids. Various techniques were used to characterize the synthesized LDHs and investigate the PL mechanism, showing that crystallite size also plays a significant role in the process.
JOURNAL OF ELECTRONIC MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Zineb Meguellati, Naima Ghemmit-Doulache, Razika Brahimi
Summary: Massive amounts of contaminated wastewater are produced by the textile industry, and this study focuses on developing innovative techniques using CoAl-LDH material for removing acid dyes. The synthesized material shows excellent adsorption capacity and follows pseudo-second order reaction and Langmuir adsorption isotherm.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Yuge Wang, Huiyu Duan, Hao Li, Jianzheng Zhen, Weiyang Lv
Summary: The application of MoS2 as a cocatalyst in wastewater treatment is important, but its efficiency is limited by agglomeration and insufficient interaction with the catalyst. In this study, the combination of layered double hydroxide (LDH) catalyst and MoS2 cocatalyst achieved efficient removal of organic pollutants by peroxymonosulfate (PMS) activation. The MoS2 intercalated LDH composite samples (MLDH) exhibited excellent phenol degradation performance, with a significantly higher rate constant compared to other samples. The research results provide possibilities and suggestions for creating highly effective catalysts for wastewater cleanup.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Chemistry, Physical
Zolfaghar Rezvani, Leila Jafari Foruzin, Kamellia Nejati
Summary: This paper presents the preparation of a dual-color emitting nanohybrid based on ZnAl-layered double hydroxide (LDH), where Mordant Orange 1 (MO1) is intercalated into the interlayer space of LDH using the microwave-assisted ion-exchange method. The nanohybrid is characterized by various techniques and exhibits dual-color photoluminescence emission due to fluorescence resonance energy transfer (FRET). This study demonstrates the potential of using the microwave-assisted ion-exchange method to design inorganic-organic matrices with two-color emission and high stability for optoelectronic and dual-color optical devices.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Review
Chemistry, Physical
Andraz Mavric, Chunhua Cui
Summary: This article discusses the development of efficient electrolyzers made of earth-abundant elements for low-temperature industrial-scale water electrolysis, focusing on the impact of active metal sites, structure, and composition on reaction kinetics as well as the current density issues of LDHs. Moreover, it introduces the degradation mechanism of LDHs in oxidative alkaline environments and approaches to stabilize the overall performance of LDHs.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Engineering, Environmental
Yihong Wu, Lei Song, Maofeng Shi, Chuhan Gu, Jiaxian Zhang, Jingyu Lv, Lili Xuan
Summary: Ca/Fe-LDH loaded onto natural zeolite (NZ) was effective in adsorbing phosphorus, reducing its concentration in contaminated sediments. CFL-Z capping sediments exhibited better inhibition of sediment P release compared to CFL-Z amendment sediments. The presence of CFL-Z also reshaped the microbial community structure, with different bacteria influencing the stability of sediment P.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Electrical & Electronic
Ome Parkash Kumar, Muhammad Naeem Ashiq, Syed Shoaib Ahmad Shah, Shahbaz Akhtar, Mudhar A. Al Obaidi, Iqbal M. Mujtaba, Aziz Ur Rehman
Summary: The study prepared ZrRGOCuFe LDHs composite materials through coprecipitation method, which were used for the photodegradation of model contaminant methylene blue. Various characterization techniques confirmed the excellent catalytic performance of the composite materials, showing remarkable photodegradation efficiency under specific conditions.
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2021)
Article
Food Science & Technology
Slah Hidouri, Abdel Hamid Errachid, Joan Baussels, Yaroslav I. Korpan, Oscar Ruiz-Sanchez, Zouhair M. Baccar
Summary: Diamine oxydase and peroxidase were co-immobilized onto layered double hydroxide (LDH) thin films for the development of real-time histamine biosensors. The developed biosensors have fast response time, high sensitivity and selectivity, a wide dynamic range, and a detection limit below 10(-8) M. Additionally, the reproducibility, specificity, and storage stability of the biosensors were studied.
JOURNAL OF FOOD SCIENCE AND TECHNOLOGY-MYSORE
(2021)
Article
Environmental Sciences
Xin Liang, Yanlan Su, Xinnuo Wang, Chuntao Liang, Chijian Tang, Jiayu Wei, Kehui Liu, Jiangming Ma, Fangming Yu, Yi Li
Summary: This study synthesized a novel corn straw biochar-loaded calcium-iron layered double hydroxide composite (CaFe-LDH@CSB) and applied it as a remediation adsorbent for heavy metals (HMs) in both water and soil environments. The adsorption mechanism of CaFe-LDH@CSB in water involved a chemical endothermic adsorption process dominated by various interactions. The maximum adsorption capacity for Cd(II), Pb(II), Zn(II), and Cu(II) in water was 24.58, 240.96, 57.57, and 39.35 mg g-1, respectively. Application of CaFe-LDH@CSB in HM-contaminated soil treatment also helped increase soil pH.
Article
Chemistry, Physical
Dandan Jin, Santosh Khanal, Shiai Xu
Summary: The study showed that OBPB/ZLDH could improve the thermal stability of PVC and accelerate the dechlorination and oxidation of PVC at low temperature.
APPLIED CLAY SCIENCE
(2021)
Article
Materials Science, Composites
Nouh Zeggai, Zohra Bouberka, Frederic Dubois, Lamia Bedjaoui, Tewfik Bouchaour, Chems Eddine Gherdaoui, Jonathan Potier, Philippe Supiot, Ulrich Maschke
Summary: A series of binary low-cost biobased copolymers with linear and crosslinked structures were prepared using UV-visible induced free radical polymerization. The copolymers exhibited good thermally induced shape memory properties and physical crosslinking effects.
COMPOSITES SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Dounya Merah, Lamia Bedjaoui, Nouh Zeggai, Zohra Bouberka, Johan Sarazin, Donna Boutalbi, Ana Barrera, Hana Boughrara, Frederic Dubois, Frederic Cazaux, Philippe Supiot, Ulrich Maschke
Summary: Polymerization kinetics and thermal properties of acrylic copolymers containing IBOA and 2-EHA units were investigated. High conversion rates of the acrylic double bonds were achieved, and a single glass transition temperature was observed over a large temperature range, possibly due to hydrogen bonding interaction. Several degradation processes were observed, with the thermal stability of the copolymers increasing with higher IBOA content.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Polymer Science
Hana Boughrara, Souad Djellali, Nacerddine Haddaoui, Jean-Noel Staelens, Philippe Supiot, Ulrich Maschke
Summary: This study investigates the structural and thermal properties of PE/PCL blends with the addition of copolymers or Ox-PE/PCL mixtures as compatibilizers. The results show that the addition of compatibilizers can improve the compatibility between PE and PCL, and the Ox-PE75/PCL25 blend exhibits high compatibility but lower thermal stability compared to PE75/PCL25.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Engineering, Environmental
Chems Eddine Gherdaoui, Zohra Bouberka, Jean-Philippe Delbarre, Olivier Hutin, Roger Sansano, Laurent Leclercq, Philippe Supiot, Ulrich Maschke
Summary: Polychlorinated biphenyls (PCBs) were widely used as electrical insulators in transformers and power capacitors due to their unique chemical properties. Accurately identifying and quantifying their presence in dielectric fluids is an important challenge.
WASTE MANAGEMENT & RESEARCH
(2023)
Article
Polymer Science
Assia Zennaki, Latifa Zair, Khadidja Arabeche, Lina Benkraled, Ulrich Maschke, Abdelkader Berrayah
Summary: This study investigated the effects of annealing temperature and time on the crystalline phase transition in PLA using DSC and DMA. A small exothermal peak was observed at 130 degrees C, indicating the disorder-to-order phase transition, when the sample was annealed at 80 degrees C for 10-30 hours. The sample annealed at 90-110 degrees C showed a double melting behavior, suggesting the alpha'-alpha phase transition. DMA results showed a significant increase in the glass modulus at 80 degrees C for 3 hours, followed by an improvement at 120 degrees C for all samples. These findings suggest that the improvement in E-g is correlated with the increase in crystallinity and the alpha'-alpha phase transition.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Amina Bakhtiar, Zohra Bouberka, Pascal Roussel, Christophe Volkringer, Ahmed Addad, Baghdad Ouddane, Christel Pierlot, Ulrich Maschke
Summary: A clay-based TiO2 nanocomposite material with high efficiency in heterogeneous photocatalysis was synthesized using a sol-gel method. The material exhibited a large specific surface area and could be reused without loss of efficiency, showing a relatively quick dye purification rate.
Article
Polymer Science
Ouahiba Beladghame, Nouria Bouchikhi, Djahida Lerari, Imad Eddine Charif, Olivier Soppera, Ulrich Maschke, Lamia Bedjaoui-Alachaher
Summary: This study developed novel molecularly imprinted polymers (MIPs) films using a non-covalent approach for the herbicide 2,4-D using phenoxypropionic acid (PPA) as an analogue. MIPs were prepared through photo-polymerization with specific monomers, cross-linkers, templates, initiators, and solvents. Characterization techniques such as IR, TGA, and AFM were used to evaluate the properties of MIPs. Gas chromatography (GC) was used to compare the recognition abilities of MIPs and non-imprinted polymers (NIPs). Factors such as film mass, template concentration, and cross-linking density were varied to optimize the binding characteristics of MIPs.
IRANIAN POLYMER JOURNAL
(2023)
Article
Chemistry, Physical
Fatiha Achache, Zoulikha Khouba, Tayeb Benabdallah, Ulrich Maschke, Mohammed Hadj Youcef
Summary: This study focuses on the phase transition behavior of a thermotropic liquid crystal doped with a Schiff base incorporating a 12-carbon alkyl chain. The properties of the guest-host systems at different concentrations of the solute were investigated using differential scanning calorimetry and UV-visible spectroscopy. The thermal properties, orientational order parameters, and activation energy of the doped liquid crystal were determined, and a filamentary texture was observed.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Merah Dounya, Ulrich Maschke, Nouria Bouchikhi, Houcine Ziani Cherif, Lamia Bedjaoui-Alachaher
Summary: In this study, the swelling behavior of poly(IBOA) and its copolymer poly(IBOA)-co-2-EHA) was compared. The copolymer showed a lower glass transition temperature (T-g) compared to poly(IBOA). The swelling study was performed in polar and non-polar solvents, and the solubility, interaction, and diffusion parameters affecting the swelling were calculated. The results showed that the swelling of the copolymer was influenced by the nature of the solvent and increased with the presence of EHA in the copolymer. The diffusion mechanism shifted from diffusion-controlled to non-Fickian with different solvents.
Article
Polymer Science
Latifa Zair, Abdelkader Berrayah, Khadidja Arabeche, Zohra Bouberka, Andreas Best, Kaloian Koynov, Ulrich Maschke
Summary: This investigation focuses on the thermomechanical properties of Poly-TPGDA/liquid crystal (LC) blends developed via free radical polymerization processes induced by Electron Beam (EB) and Ultraviolet (UV) radiation. The EB-cured Poly-TPGDA network shows higher glass transition temperature (T-g) and storage modulus, and the LC has a significant impact on the storage modulus at temperatures below T-g.
Article
Crystallography
Zohra Taibi, Kahina Bentaleb, Zohra Bouberka, Christel Pierlot, Maxence Vandewalle, Christophe Volkringer, Philippe Supiot, Ulrich Maschke
Summary: This report investigates the modification of a bentonite clay to enhance its adsorption capacity for the removal of azo dyes. The clay was purified and modified through acid activation and intercalation with a cationic surfactant. The modified clays showed significantly increased surface area and pore volume compared to the original clay. The modified clay with the highest adsorption capacity was found to be a promising low-cost material for the removal of azo dyes.
Article
Chemistry, Physical
Ana Barrera, Corinne Binet, Frederic Dubois, Pierre-Alexandre Hebert, Philippe Supiot, Corinne Foissac, Ulrich Maschke
Summary: The dielectric behavior and electrical conductivity response of recycled nematic Liquid Crystals (LCs) extracted from End-Of-Life (EOL)-Liquid Crystal Displays (LCDs) were studied. The results showed that after purification, the physical properties of the recycled LC blends were similar to conventional nematic LCs. The frequency and temperature evolution of the recorded spectra were comparable to those of commercial LC mixtures, indicating the potential reuse of the recycled LCs for display applications.
JOURNAL OF MOLECULAR LIQUIDS
(2023)
Article
Biochemistry & Molecular Biology
Hussam Aldoori, Zohra Bouberka, Herve Feuchter, Skander Khelifi, Franck Poutch, Loic Brison, Fouad Laoutid, Stijn Steuperaert, Corinne Foissac, Philippe Supiot, Christian Malas, Ulrich Maschke
Summary: This report investigated the photodegradation of the brominated flame retardant Decabromodiphenyl ether (DBDE or BDE-209) in commercially available Poly(acrylonitrile-butadiene-styrene) (ABS) and Poly(carbonate) (PC) using a low-pressure reactor and UV-visible light. The study aimed to decompose the BFR in plastic waste from electrical and electronic equipment (EEE) while maintaining the specifications of the polymer materials for recycling. The results showed that DBDE underwent rapid photodegradation, reaching degradation yields above 90% after 15 minutes of irradiation. The evaluation of polymer properties revealed superficial crosslinking effects, slightly accelerated by the presence of DBDE, but the overall thermal and structural properties of the virgin polymers were maintained.
Article
Polymer Science
Amina Bouriche, Lamia Alachaher-Bedjaoui, Ana Barrera, Jean-Noel Staelens, Ulrich Maschke
Summary: The thermal degradation behavior of Poly(2-ethyl hexyl hcrylate) blended with a nematic liquid crystal mixture was studied using thermal gravimetric analysis (TGA). The activation energies at different conversion rates were determined using three isoconversion methods. The results showed that the activation energy for the liquid crystal remained constant, while the activation energy for the polymer increased with increasing conversion rate.
Article
Crystallography
Ana Barrera, Corinne Binet, Florence Danede, Jean-Francois Tahon, Baghdad Ouddane, Frederic Dubois, Philippe Supiot, Corinne Foissac, Ulrich Maschke
Summary: The chemical, structural, and thermal properties of recovered nematic Liquid Crystal (LC) mixtures were investigated using various analytical techniques. A large quantity of 65,700 End-Of-Life (EOL) Liquid Crystal Display (LCD) screens were used to extract these LC blends. The heterogeneous nature of the studied EOL-LCD screens, due to different brands, production years, and dimensions, was observed. The collected screens had an average diagonal size of 24 inches and exhibited typical chemical structures of LC molecules with aliphatic chains and aromatic and polar groups. POM observations showed Schlieren and marble-like textures, characteristic of nematic LCs, at room temperature. Thermal characterization and thermo-optical analysis revealed a broad nematic phase between -90°C and +70°C for these LC mixtures.
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)
