Article
Chemistry, Multidisciplinary
Somia Djelloul Bencherif, Juan Jesus Gallardo, Ivan Carrillo-Berdugo, Abdellah Bahmani, Javier Navas
Summary: A layered double hydroxide material based on Zn and Cr was developed and transformed into the corresponding oxide by heat treatment, showing good photocatalytic activity in photodegradation tests. The catalyst demonstrated 100% degradation in optimized conditions and maintained good performance after five photodegradation cycles.
Article
Engineering, Environmental
Liquan Chu, Chaojie Zhang, Jing Yu, Xu Sun, Xuefei Zhou, Yalie Zhang
Summary: In this study, Mg/Fe(Al)-calcined layered double hydroxides (Mg/Fe(Al)-CLDHs) with different Mg/Fe(Al) ratios were synthesized to remove nitrate from interflow in the purple soil region of Sichuan Province, China. The 3:1 Mg/Fe CLDH exhibited the best adsorption performance, with a maximum adsorption capacity of 73.36 mg/g. The adsorption process was found to be a physical-chemical multilayer process, with the pseudo-second-order model and Freundlich model being the best-fitting kinetic and isothermal models, respectively.
WATER SCIENCE AND TECHNOLOGY
(2022)
Article
Engineering, Environmental
Mengxue Li, Peng Li, Li Zhang, Mengmeng Chen, Juanjuan Tang, Caidie Qin, Stephanie Ling Jie Lee, Sijie Lin
Summary: A series of ZnO decorated ZnFe-layered double hydroxide @ biochar (ZnO/ZnFe-LDH@BC) nanocomposites were synthesized via a facile hydrothermal method for the treatment of antibiotics-contaminated water using visible light photocatalysis. The nanocomposites showed significant enhancement of degradation efficiency compared to ZnO/ZnFe-LDH or BC alone, indicating strong synergy between ZnO/ZnFe-LDH and BC. The nanocomposite with 23.0 wt% of BC showed optimal performance and alkaline condition and co-existing CO32- ions improved the stability and recyclability of the nanocomposites. LC-MS analysis of the degradation pathway of antibiotics and the reduction in toxicity confirmed the effectiveness of photocatalytic degradation.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Jiayue Hu, Chuan Yu, Cheng Li, Shenyu Lan, Lixi Zeng, Mingshan Zhu
Summary: This study investigates the piezo-photocatalytic performance of different thicknesses of ZnAl layered double hydroxides (ZnAl-LDHs) in the degradation of CBZ pollutants. The results show that ultra-thin ZnAl-LDHs sheets exhibit higher efficiency and faster degradation rate, which can be attributed to their increased sensitivity to light irradiation and external stress. Additionally, the piezo-photocatalytic reaction of the ultra-thin ZnAl-LDHs is significantly enhanced compared to individual piezocatalysis and photocatalysis, due to the piezoelectric field's ability to boost the separation of electron-hole pairs and modulate band energy alignment.
Article
Engineering, Environmental
Qingwei Wang, Qiuhong Lin, Qingzhu Li, Kaizhong Li, Lanyan Wu, Shuimei Li, Hui Liu
Summary: A novel method based on in-situ formation of ZnFe-As-LDHs was developed to effectively remove and stabilize As(III) from wastewater. Under optimal conditions, the As(III) concentration decreased significantly and met arsenic leaching criteria, with in-situ formed LDHs showing better performance compared to pre-formed LDHs, attributed to oxidation of As(III) and co-precipitation with Zn and Fe.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Environmental Sciences
Akash Balakrishnan, Mahendra Chinthala, Rajesh Kumar Polagani, Dai-Viet N. Vo
Summary: Tetracycline is one of the most widely used antibiotics in human therapy, veterinary applications, and agricultural activities. Its consumption is expected to increase by over 30% by 2030. This review focuses on the recent advancements in photocatalytic degradation of tetracycline using graphitic carbon nitride-based photocatalysts, which offer higher visible light activity, low cost, and non-toxicity. The properties, worldwide consumption, occurrence, and environmental impacts of tetracycline are comprehensively discussed. The occurrence of tetracycline in various water matrices has been confirmed, with a maximum concentration of 54 μg/L. Among different graphitic carbon nitride-based materials, heterojunctions have shown the highest photocatalytic degradation efficiency of 100% with reusability for up to 5 cycles. Photocatalytic membranes are found to be feasible due to ease of recovery and better reusability. The limitations and efficient solutions for graphitic carbon nitride-based wastewater treatment technology are also emphasized in detail.
ENVIRONMENTAL RESEARCH
(2023)
Article
Nanoscience & Nanotechnology
Chongzhi Yin, Chao Wang, Qian Hu
Summary: The study focuses on improving the adsorption effect and selectivity of layered double hydroxides (LDHs) for oxyanions by preparing glycine-modified Fe/Zn-LDH (GFeZn). The GFe(1)Zn(1) with a Fe/Zn mole ratio of 1:1 achieved excellent selectivity for As(V), with a saturated adsorption capacity of 859.52 mg/g and an adsorption equilibrium established between 60 and 120 minutes. The GFe(1)Zn(1) also showed excellent reusability with only a 13.30% decrease in adsorption capacity after 5 adsorption/desorption cycles, providing a new method for selectively removing As(V) from polluted water.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Article
Environmental Sciences
Zhongshuo Xu, Yueheng Zhong, Yuhui Wang, Xinshan Song, Wei Huang
Summary: Phosphorus pollution can cause both aquatic eutrophication and global phosphorus scarcity. Fe-based layered double hydroxides (LDHs) have been extensively studied for their high phosphorus adsorption and recovery. The composition of Fe-based LDHs is crucial in determining their adsorption performance. In this study, Zn/Fe LDH exhibited a much higher adsorption capacity than Mg/Fe LDH, and calcination significantly increased the adsorption capacity of Mg/Fe LDH. The phosphorus removal efficiency of Fe-based LDHs was high under acidic conditions but decreased with increasing pH, with Zn/Fe LDH showing weaker pH inhibition.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Caifeng Xia, Hanhan Huang, Derui Liang, Yuan Xie, Fanping Kong, Qinghua Yang, Jinxiu Fu, Zhiwen Dou, Qian Zhang, Zilin Meng
Summary: In this study, a novel composite material LDH@CNT was prepared using an in-situ method, which had a favorable adsorbent structure due to the mutual support of LDHs and CNTs. The adsorption kinetics of LDHs, CNTs, and LDH@CNT composites for tetracycline were well described by intraparticle diffusion and pseudo-second-order models, indicating that the adsorption site played a major role. The Generalized Langmuir model was found to better describe the adsorption process than the Langmuir model, suggesting multiple interactions between tetracycline and the composite material. Site energy distribution theory combined with molecular simulation explained the adsorption mechanisms, and the removal of tetracycline by LDHs, CNTs, and LDH@CNT composites was calculated. The results showed that LDH@CNT composites had lower average site energies compared to LDHs and CNTs, but had more exposed adsorption active sites, leading to improved removal efficiency of tetracycline.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Physical
Pooja Shandilya, Rohit Sharma, Raj Kumar Arya, Amit Kumar, Dai-Viet N. Vo, Gaurav Sharma
Summary: The global energy demand is steadily increasing and requires a reliable and sustainable source of energy. Hydrogen energy is emerging as one of the most promising alternatives, with a zero-carbon footprint. Layered double hydroxides (LDH) nanocomposites have attractive physicochemical properties and synergistic effect in the field of hydrogen production.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Mihaela Mureseanu, Nicoleta Cioatera, Gabriela Carja
Summary: Fe-Ce/layered double hydroxides (LDHs) were synthesized by reconstructing the calcined MgAlLDH and ZnAlLDH in FeSO4/Ce(SO4)(2) aqueous solutions. The resulting catalysts show a heterostructured morphology, combining the characteristics of LDHs with those of Fe2O3 and CeO2. The photo-electrochemical behavior of Fe-Ce/LDHs and their derived oxides was studied, demonstrating their efficiency in the degradation of phenol from water under both UV and solar irradiation.
Article
Engineering, Environmental
Caifeng Xia, Xiangming Li, Yuan Xie, Fanping Kong, Menglan Zhao, Yu Wang, Yang Wang, Qian Zhang, Zilin Meng
Summary: The discharge of tetracycline antibiotics into the environment is a serious threat to humans. In this study, tyrosine intercalated layered double hydroxide (Tyr@LDH) was prepared and characterized. Adsorption kinetics and isotherms showed that Tyr@LDH had a higher adsorption capacity and more adsorption sites compared to LDHs. The presence of tyrosine improved the reliability of TC adsorption. The material exhibited good adsorption efficiency and stability, making it suitable for TC treatment in complex environments.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Environmental
Xueying Wang, Linjun Wu, Yanchun Huang, Jun Li, Guochun Hua, Chao Liu, Naiwen Li, Bo Lai
Summary: In this study, Mg/Fe/La LDOs (MFL) with high adsorption capacity and selectivity for phosphate removal and recovery were successfully synthesized, providing a potential solution for phosphorus removal and recycling.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Article
Green & Sustainable Science & Technology
Jiyong Zhang, Yuhao Ma, Wentao Zhang, Xue Huang, Xiaomeng Wang, Yi Huang, Peicong Zhang
Summary: A novel CuBi2O4/ calcined ZnAlBi layered double hydroxides (CBO/CLDHs) composite was prepared using an ultrasonic-assisted calcination method. This composite showed excellent removal efficiency for Cr(VI) and tetracycline pollutants through adsorption and photocatalysis. The uniform distribution of calcined ZnAlBi layered double hydroxides nanosheets on the CuBi2O4 microrods and the formation of heterojunctions contributed to the enhanced adsorption and photocatalytic activity. The composite also demonstrated good adaptability in practical water treatment.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Engineering, Environmental
Lei Yang, Jianghao Chen, Yanhe Nie, Changliang Shi, Qiang Wang
Summary: In this study, LDHs were used to produce CLDH which demonstrated efficient adsorption of gold (I) complexes from thiosulfate solution. The adsorption process was fast and endothermic, with adsorption equilibrium reached in 2 hours. The CLDH-Au loaded with Au(S2O3)(2)(3-) could be recycled, showing promising application prospects in gold hydrometallurgy.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Chemistry, Physical
Pinar Ertugruloglu, Hayrettin Ozan Gulcan, Ayodeji Olugbenga Ifebajo, Amirhossein Fallah, Mustafa Fethi Sahin, Mustafa Gazi
Summary: The results of this study demonstrate that glutaraldehyde crosslinked alginate beads can effectively adsorb the antidepressant drug duloxetine hydrochloride (DLU) from aqueous solution. The adsorption capacity of the alginate beads increased with increasing initial concentration of DLU, and the equilibrium data fitted well with the Freundlich model. The maximum adsorption capacity at 298 K was found to be 14.83 mg DLU/g of crosslinked alginate bead, and the adsorption process can be described by the pseudo-second-order kinetic model.
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Faisal Suleiman Mustafa, Akeem Adeyemi Oladipo, Mustafa Gazi
Summary: The study employed a two-step simple method to synthesize new oligomers EEO and EETO with significant antibacterial activity. Analysis showed that both oligomers exhibit good antibacterial effects against S. aureus and are harmless to cells.
Article
Chemistry, Physical
Akeem Adeyemi Oladipo, Mustafa Gazi
Summary: A novel counter electrode material, Ni0.5Zn0.5Fe2O4/carbon (NZF/C) composite, was synthesized and demonstrated comparable catalytic activity to platinum, making it a potential alternative for dye-sensitized solar cells.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2022)
Article
Materials Science, Multidisciplinary
Mustafa Tokay, Akeem Adeyemi Oladipo, Mehmet Kusaf
Summary: This study reports the impact of adding varying loadings of NZF nanoparticles into a TiO2 photoanode on the performance of DSSCs sensitized with natural and commercial dye molecules. The findings show that NZF greatly improves the photoconversion efficiency of the DSSCs, with the greatest improvement observed at an optimum loading of 50% w/w. The improved performance can be attributed to higher dye loading, improved electron transportation, and reduced electron recombination rates.
Article
Chemistry, Multidisciplinary
Faisal Suleiman Mustafa, Akeem Adeyemi Oladipo, Mustafa Gazi
Summary: Conventional methods are inefficient to treat water contaminated with persistent organic contaminants. A heterogeneous photocatalysis-based advanced oxidation process was applied to decontaminate bacteria and 2,4,5-trichlorophenol (TCP) contaminated water. A Li-doped ternary Zn0.5Ni0.5Fe2O4 photocatalyst was synthesized and characterized. The results showed that the Li/ZNF photocatalyst has a good decontamination effect on bacteria and TCP, and can be reused multiple times.
Article
Environmental Sciences
Akeem Adeyemi Oladipo, Faisal Suleiman Mustafa, Obinna Nestor Ezugwu, Mustafa Gazi
Summary: In this study, electrocoagulation technology was successfully used to remove tetracycline and nickel ion complexes in wastewater, showing high removal efficiency. Additionally, it was found that a sufficient amount of nickel ions can enhance the degradation of tetracycline through electrocatalysis.
Article
Engineering, Environmental
P. V. Nidheesh, Akeem Adeyemi Oladipo, Nael G. Yasri, A. R. Laiju, V. R. Sankar Cheela, Abdoulaye Thiam, Yemane G. Asfaha, S. Kanmani, Edward (Ted) P. L. Roberts
Summary: Electrocoagulation (EC) is known for its effectiveness in treating water and wastewater. Various improvements such as the addition of air and hydrogen peroxide to generate radicals, the use of an air cathode to reduce energy consumption, and the utilization of renewable energy sources have been adopted to enhance the applicability and performance of EC. It has been shown to be suitable for treating microplastics, nanoparticles, emerging contaminants, oil and grease, and disinfection.
PROCESS SAFETY AND ENVIRONMENTAL PROTECTION
(2022)
Article
Environmental Sciences
Faisal Suleiman Mustafa, Akeem Adeyemi Oladipo
Summary: A new Mg-doped Zn0.5Ni0.5Fe2O4 (Mg-FZN) photocatalyst was synthesized using a co-precipitation doping technique. It showed dual functionality in degrading pollutants and inactivating bacteria. The characterization results revealed its semiconductor properties and optimized conditions achieved 83.8% degradation efficiency for 2,4,5-trichlorophenol. Additionally, Mg-FZN exhibited bactericidal effects on E. coli and S. aureus within 60 minutes, with interactions at the molecular level.
Article
Chemistry, Multidisciplinary
Muhammad Asif Rabbani, Akeem Adeyemi Oladipo, Mehmet Kusaf
Summary: N, P dual-doped watermelon peel-derived carbon (NPW) with larger specific surface area and improved hierarchically interconnected pores was successfully prepared. The NPW electrode exhibited excellent electrochemical activity with high specific capacitance and good cycling stability. In neutral electrolyte, NPW showed wider operating voltage window and higher energy density.
Review
Nanoscience & Nanotechnology
Akeem Adeyemi Oladipo, Saba Derakhshan Oskouei, Mustafa Gazi
Summary: Increasing levels of antibiotics and hormones in the environment and food samples are concerning. Opto-electrochemical sensors, specifically using metal-organic frameworks (MOFs), have shown promise for detecting and monitoring these compounds due to their low cost, portability, and sensitivity. This review critically examines the capabilities of electrochemical and luminescent MOF sensors for detecting antibiotics and hormones in various samples, and discusses the challenges, recent advances, and future directions for developing stable and high-performance MOFs as commercially viable sensor materials.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2023)
Review
Nanoscience & Nanotechnology
Akeem Adeyemi Oladipo, Faisal Suleiman Mustafa
Summary: Water pollution, caused by micropollutants such as antibiotics and organic dyes, is a serious global threat to human health and the environment. Nanostructured semiconductors, particularly bismuth-based photocatalysts, have gained significant interest for their potential in advanced oxidation processes using photocatalysis for sustainable wastewater treatment. Recent developments and improvements in photocatalytic capabilities of bismuth-based photocatalysts, including morphological modifications, doping, and the creation of Z-schemes, Schottky junctions, and heterojunctions, are thoroughly covered in this review. The review also discusses general photocatalytic mechanisms and potential degradation pathways for antibiotics and dyes in wastewater, as well as areas that require further attention and study for real-world applications.
BEILSTEIN JOURNAL OF NANOTECHNOLOGY
(2023)
Article
Biochemistry & Molecular Biology
Hoda Ansari, Akeem Adeyemi Oladipo, Mustafa Gazi
Summary: A novel hydrophilic porous alginate-based polyHIPE (AGA) was synthesized and used as an adsorbent for the removal of methylene blue (MB) dye. The adsorption efficiency of AGA was affected by the presence of Cu2+ ions and solution salinity. The experimental data showed good fit with extended Langmuir and Sheindorf-Rebhun-Sheintuch models in a multi-dye system.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Chemistry, Multidisciplinary
Hayrettin Ozan Gulcan, Karar Tawfeeq Shukur, Acelya MavIdenIz, Okan Sirkecioglu, Mustafa GazI
Summary: In this study, the iron (III) selective on-off sensor properties of benzo[c]chromen-6-one derivatives were demonstrated, and the fluorescent and metal interaction properties of 4-substituted analogues were investigated. It was found that the substituents had significant effects on the fluorescent properties of the benzo[c]chromen-6-one system.
TURKISH JOURNAL OF CHEMISTRY
(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)