Article
Chemistry, Multidisciplinary
Min Huang, Shuyi Zhang, Bo Wu, Xing Yu, Yongping Gan, Tiejun Lin, Fei Yu, Yuhan Sun, Liangshu Zhong
Summary: A tunable band structure W-doped TiO2 photocatalyst was designed for the photocatalytic oxidation of methane to C-1 oxygenates using O-2 at low temperature. The W-doping improved the photocatalytic performance, achieving a liquid oxygenates productivity of 12.2 mmol g(-1) and a selectivity of 99.4%. Additionally, the selectivity of COx was effectively decreased from 21.2% to 0.6%. W-doping not only enhanced light absorption but also promoted the separation of photo-generated carriers, improving methane conversion.
Article
Materials Science, Coatings & Films
M. Coto, S. C. Troughton, P. Knight, R. Joshi, R. Francis, R. Kumar, T. W. Clyne
Summary: UV treatments are commonly used for pollutant removal in industrial water. Introducing a suitable photocatalyst can enhance energy efficiency by producing reactive oxygen species to degrade pollutants. TiO2 is a common photocatalyst for UV illumination, often created through Plasma Electrolytic Oxidation (PEO) of titanium substrates. High surface roughness and area on PEO samples enhance photocatalytic activity by disrupting fluid flow and increasing interaction between pollutants and the catalytic surface.
SURFACE & COATINGS TECHNOLOGY
(2021)
Article
Chemistry, Physical
Min Huang, Shuyi Zhang, Bo Wu, Yao Wei, Xing Yu, Yongping Gan, Tiejun Lin, Fei Yu, Fanfei Sun, Zheng Jiang, Liangshu Zhong
Summary: In this study, a novel Cu and W codoped TiO2 photocatalyst was fabricated to achieve selective photooxidation of methane into oxygenates at ambient temperature, with limited formation of CO2. The Cu-W-TiO2 photocatalyst exhibited high productivity and selectivity, and its improved performance was attributed to the modulation of electronic and band structure, which facilitated methane activation and hindered overoxidation of oxygenates.
Article
Materials Science, Ceramics
E. Burak Ertus, Cekdar Vakifahmetoglu, Abdullah Oztuerk
Summary: The research found that porous glass embedded with titanium dioxide has a higher efficiency in methylene blue removal, mainly due to its high specific surface area and dispersion of nano-sized anatase TiO2 crystallites.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Chemistry, Physical
Alejandra Romero-Moran, Jose L. Sanchez-Salas, Joel Molina-Reyes
Summary: The study established the influence of the crystalline phase and agglomeration degree of TiO2 nanoparticles on photocatalytic hydroxyl radical formation and bacterial inactivation in TiO2/SiO2 composite coatings. A relationship between hydroxyl radicals' formation and charge carrier transfer mechanism between defect levels in SiO2 and TiO2 embedded nanoparticles was established through a simple spectroscopic method. This correlation complements the lack of mechanisms behind the photocatalytic activity in TiO2/SiO2 composites.
APPLIED CATALYSIS B-ENVIRONMENTAL
(2021)
Article
Environmental Sciences
Zhengyang Chen, Shui Yu, Jianping Liu, Yamei Zhang, Yuchen Wang, Jiangyi Yu, Ming Yuan, Pengchao Zhang, Wen Liu, Jiaoxia Zhang
Summary: The continuous presence of organic pollutants in industrial wastewater poses a significant threat to human health, necessitating urgent and effective treatment. Photocatalytic degradation technology, specifically the use of TiO2 photocatalysts, provides a viable solution for the removal of organic pollutants. However, the limited absorption of visible light by TiO2 hinders its full utilization. To address this issue, the study developed an environmentally friendly synthesis of Ag-coated on micro-wrinkled TiO2-based catalysts, enabling extended absorption of visible light. The synthesized C/F-Ag-TiO2 composite exhibited a significantly lower band gap energy and achieved a remarkable degradation rate under visible light, making it a promising candidate for highly efficient environmental remediation.
ENVIRONMENTAL RESEARCH
(2023)
Article
Chemistry, Physical
Martha Pylarinou, Alexia Toumazatou, Elias Sakellis, Evangelia Xenogiannopoulou, Spiros Gardelis, Nikos Boukos, Athanasios Dimoulas, Vlassis Likodimos
Summary: Surface deposition of FeOx nanoclusters on TiO2 photonic crystals was investigated to explore the interplay of slow-photon amplification, visible light absorption, and charge separation in FeOx-TiO2 photocatalytic films. The study found that low amounts of FeOx nanoclusters improved photocatalytic performance under visible light, but higher loading resulted in performance deterioration, particularly under UV-Vis light.
Article
Chemistry, Physical
Raimondo Germani, Marzia Bini, Simona Fantacci, Federica Simonetti, Matteo Tiecco, Eleonora Vaioli, Tiziana Del Giacco
Summary: The study indicated that tetraalkylammonium bromide surfactants significantly enhance the efficiency of TiO2 photocatalytic degradation of dyes, with various factors such as initial pH, dye pK's, water type, and light source influencing the process. The hydrophobic and electrostatic interactions between dye and surfactant/TiO2 in different forms of aggregation play a crucial role in explaining the surfactant effect on the photodegradation process.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Chemistry, Physical
Dandan Peng, Ying Zhang, Guang Xu, Ye Tian, Di Ma, Yao Zhang
Summary: The enhanced visible light absorption, effective charge separation, and the presence of carbon all contribute significantly to the improvement of the photocatalytic performance of NiS1.03@C/N-TiO2 heterojunction photocatalysts for cyclohexane oxidation.
APPLIED SURFACE SCIENCE
(2021)
Article
Metallurgy & Metallurgical Engineering
D. V. Mashtalyar, I. M. Imshinetskiy, K. V. Nadaraia, A. S. Gnedenkov, S. N. Suchkov, D. P. Opra, E. V. Pustovalov, A. Yu Ustinov, S. L. Sinebryukhov, S. V. Gnedenkov
Summary: A comprehensive study was conducted on the properties of coatings formed on a magnesium alloy by plasma electrolytic oxidation (PEO) using electrolytes with nanosized particles of anatase (titanium dioxide). The formed coatings exhibit a 2.5-fold reduction in corrosion current density and a 25% increase in hardness compared to coatings without particles. Confocal micro-Raman spectroscopy revealed the presence of anatase and rutile phases in the PEO coating composition due to the incorporation of TiO2 nanoparticles during plasma electrolytic treatment. The presence of titanium dioxide has a positive effect on the photocatalytic properties of the coatings, with a 1.6-fold and 1.8-fold increase in the constant rate of methyl orange and methyl blue decomposition, respectively, compared to coatings formed without TiO2 particles.
JOURNAL OF MAGNESIUM AND ALLOYS
(2023)
Article
Chemistry, Physical
Ramon Azpiroz, Enrique Carretero, Ana Cueva, Aida Gonzalez, Manuel Iglesias, Jesus J. Perez-Torrente
Summary: The magnetron sputtering technique is successfully used to prepare porous TiO2 thin films on soda-lime glasses. The morphology of the thin layers is influenced by deposition parameters, and the best angle and oxidation level achieve desired porosity and film thickness. The presence of a porous film is essential for achieving photocatalytic activity.
APPLIED SURFACE SCIENCE
(2022)
Article
Chemistry, Multidisciplinary
Clayton Farrugia, Alessandro Di Mauro, Frederick Lia, Edwin Zammit, Alex Rizzo, Vittorio Privitera, Giuliana Impellizzeri, Maria Antonietta Buccheri, Giancarlo Rappazzo, Maurice Grech, Paul Refalo, Stephen Abela
Summary: Photocatalysis is a promising technology for environmental remediation, with TiO2 arrays showing excellent performance under different experimental conditions. Nanotubes synthesized in an electrolyte based on ethylene glycol exhibit the best performance in degrading pollutants and have high antibacterial activity. Increasing voltage results in wider and longer nanotubes, enhancing the photocatalytic activity of the material.
Article
Polymer Science
Norman S. Allen, Michele Edge, Gonzalo Sandoval, Jo Verran, Fernando Catalina, Claire Bygott, Julie Kerrod
Summary: Various analysis methods were used to characterize prepared titania nanoparticles, and the high activity of the nanoparticles was attributed to quantum size effects, surface properties, and crystallization conditions.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Chemistry, Physical
Ji Xia, Hanyang Song, Jing Yang, Xiashi Zhu
Summary: Elliptic spherical staggered flower-like g-C3N4/TiO2 fluffy porous heterojunctions were prepared by solvothermal method using tetrabutyl titanate as titanium source and acetic acid as acid solvent. SEM and TEM showed that the ellipsoidal TiO2 was crisscrossed on the flowered TiO2, loaded on fluffy porous g-C3N4. The material exhibited good photodegradation of organic pollutants under visible light, and g-C3N4/TiO2-2 (CNT-2) could remove 99.5% MO within 120 min. In addition, CNT-2 exhibited remarkable photodegradation performance for single and binary mixtures. The main reason for improved performance is that elliptic spherical staggered flowerlike TiO2 and porous g-C3N4 form a heterojunction, which is benefit to reduce the electron-hole recombination efficiency of TiO2 and improve the separation of electron-hole pairs. This result presents a simple strategy for photodegradation of organic pollutants.
CHEMICAL PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Shankramma Kalikeri, Vidya Shetty Kodialbail
Summary: The present study synthesized Bismuth ferrite embedded TiO2 (BFO/TiO2) nanocomposites and demonstrated their promising application in the photocatalytic treatment of industrial effluents. The BFO/TiO2 nanocomposites showed good photocatalytic activity under visible and solar light, degrading various dyes in a mixed dye aqueous solution. The nanocomposites proved to be superior to BFO or TiO2 nanoparticles in terms of visible light activity.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Claudio Maria Pecoraro, Marianna Bellardita, Vittorio Loddo, Danilo Virtu, Francesco Di Franco, Monica Santamaria
Summary: This study investigated the photocatalytic and photoelectrocatalytic reforming of furfuryl alcohol under environmental friendly conditions. The H2 evolution and partial oxidation to furfuraldehyde were monitored. TiO2 based photocatalysts were studied for the first time and the activity of homemade photocatalysts was compared with commercial ones under UVA and simulated solar irradiation. PEC tests were performed using homemade TiO2 nanotubes as photoanode and Pt free Ni foam as cathode to enhance the Hydrogen Evolution Reaction. The rates of both partial FA oxidation and H2 evolution were higher in the PEC process.
APPLIED CATALYSIS A-GENERAL
(2023)
Article
Chemistry, Applied
Roberto Fiorenza, Marianna Bellardita, Stefano Andrea Balsamo, Antonino Gulino, Marcello Condorelli, Giuseppe Compagnini, Salvatore Scire, Leonardo Palmisano
Summary: In this study, a solar photothermo-catalytic combined process was investigated, involving the oxidation of toluene to CO2 and the subsequent conversion of CO2 into solar fuels. Two noble-metal-free catalytic systems were used, MnOx-ZrO2 for toluene removal and brookite TiO2-CeO2 mixed oxides for CO2 conversion. The addition of copper-based materials as co-catalysts further improved the CO2 conversion. The synergism between thermocatalytic and photocatalytic mechanisms played a key role in enhancing energy saving and catalytic performance. The proposed approach has promising potential for obtaining solar fuels from toxic pollutants.
Article
Chemistry, Multidisciplinary
Claudio M. Pecoraro, Marianna Bellardita, Vittorio Loddo, Francesco Di Franco, Leonardo Palmisano, Monica Santamaria
Summary: In this study, noble metal-free modified TiO2 photocatalysts were prepared using ball milling, and Pt-photodeposition was performed. The results confirmed the effectiveness of Cu2O in replacing Pt.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2023)
Article
Chemistry, Physical
Roberto Fiorenza, Luca Spitaleri, Francesco Perricelli, Giuseppe Nicotra, Maria E. Fragala, Salvatore Scire, Antonino Gulino
Summary: The photocatalytic performance of ZnO@Au nanostructures for the removal of toxic VOCs, such as toluene, ethanol, and formaldehyde, under solar light irradiation is reported. The ZnO@Au exhibited excellent activity and stability, with high selectivity towards CO2 formation. The efficient electronic communication between the gold core and the zinc oxide shell contributes to the overall photodetection and charge carrier separation.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2023)
Article
Chemistry, Physical
Stefano Andrea Balsamo, Eleonora La Greca, Marta Cala Pizzapilo, Salvatore Scire, Roberto Fiorenza
Summary: The interaction between CeO2-GO or CeO2-rGO and gold as co-catalysts was investigated for solar H-2 production by photoreforming of glycerol. The presence of gold was essential for boosting H-2 production, while GO or rGO extended the visible-light activity of cerium oxide. The strong interaction between CeO2 and Au led to good stability of the CeO2-rGO-Au sample and progressive reduction of GO into rGO contributed to the catalytic behavior.
Article
Chemistry, Physical
Vincenzo Patamia, Rosario Tomarchio, Roberto Fiorenza, Chiara Zagni, Salvatore Scire, Giuseppe Floresta, Antonio Rescifina
Summary: Advancements in materials science have led researchers to explore nature for new materials, and in this case, cyclodextrins have been functionalized to improve their CO2 adsorption capacity. These functionalized cyclodextrins showed similar adsorption capacity to BEA zeolite and could also enhance drug adsorption. Characterization techniques such as NMR and mass spectrometry were used to determine the degree of functionalization, and FTIR spectroscopy confirmed the presence and interaction of CO2 adsorbed by the material. In silico studies further supported the chemisorption process observed experimentally.
Article
Nanoscience & Nanotechnology
Alberto Bellissima, Lorena M. Cucci, Vanessa Sanfilippo, Angela De Bonis, Roberto Fiorenza, Salvatore Scire, Tiziano Marzo, Mirko Severi, Diego La Mendola, Valentina Notarstefano, Elisabetta Giorgini, Cristina Satriano
Summary: A nanodelivery system based on palladium nanoparticles (PdNP) and cisplatin (CisPt) was developed by physisorption of the drug onto the PdNP synthesized via a green redox process. The nanoparticles showed both plasmonic and photocatalytic properties. The drug loading was quantitatively estimated and the strong association of the drug with the nanoparticle surface was confirmed. The developed nanomedicine exhibited antitumoral action and potential for tissue regeneration.
ACS APPLIED BIO MATERIALS
(2023)
Article
Chemistry, Applied
Roberto Fiorenza, Chiara Contarino, Vanessa Spano, Maria Teresa Armeli Iapichino, Stefano Andrea Balsamo
Summary: Two multi catalytic approaches, thermo-assisted solar photocatalysis and solar photoassisted thermocatalysis, were investigated to convert CO2 into valuable products. Thermo-assisted solar photocatalysis achieved a high CO2 conversion rate with the best sample showing 65% CO2 conversion and the formation of CO and CH4. Solar photoassisted thermocatalysis using Pd-Ni/TiO2 decreased the activation energy and increased the CO2/CH4 conversion at lower temperature, showing potential for the formation of solar fuels from CO2.
Article
Chemistry, Multidisciplinary
Vincenzo Patamia, Chiara Zagni, Roberto Fiorenza, Virginia Fuochi, Sandro Dattilo, Paolo Maria Riccobene, Pio Maria Furneri, Giuseppe Floresta, Antonio Rescifina
Summary: Bacterial involvement in cancer's development and their impact on therapy have led to the development of strategies involving metal-chelating agents and nanomaterials to disrupt microbial cell processes.
Article
Chemistry, Physical
Stefano Andrea Balsamo, Roberto Fiorenza, Maria Teresa Armeli Iapichino, Francisco Javier Lopez-Tenllado, Francisco Jose Urbano, Salvatore Scire
Summary: This study focuses on optimizing the solar photo-reduction method for preparing TiO2-rGO composites with simultaneous gold nanoparticles deposition. The photocatalytic performance was evaluated in hydrogen production by glycerol photoreforming under UV and simulated solar irradiation. The TiO2-rGO sample prepared with two hours of solar irradiation showed the highest hydrogen production rate (64 mmol H2 h-1 gcat-1) under UV light, while the one-hour treated sample exhibited the best performance (1.6 mmol H2 h-1 gcat-1) under simulated solar light due to smaller gold particle size. The reduction degree of GO and the presence of gold nanoparticles played crucial roles in the photocatalytic activity of the samples.
MOLECULAR CATALYSIS
(2023)
Article
Chemistry, Multidisciplinary
Chiara Zagni, Alessandro Coco, Sandro Dattilo, Vincenzo Patamia, Giuseppe Floresta, Roberto Fiorenza, Giusy Curcuruto, Tommaso Mecca, Antonio Rescifina
Summary: New polymeric macroporous materials based on poly 2-hydroxyethyl methacrylate (pHEMA) were synthesized and tested for CO2 adsorption. The materials functionalized with lysine and histidine showed exceptional adsorption capacity. The morphology of the materials, specifically hydrogels, played a significant role in improving the adsorption performance.
MATERIALS TODAY CHEMISTRY
(2023)
Review
Chemistry, Physical
Muhammad Umair, Tayyaba Kanwal, Vittorio Loddo, Leonardo Palmisano, Marianna Bellardita
Summary: In recent years, water pollution has become a major concern due to the high consumption of drugs and their use in livestock. Advanced oxidation processes, which involve the production of reactive oxygen species, have shown high efficiency in degrading organic pollutants in wastewater. However, the degradation of drugs can lead to the formation of more harmful compounds. This review provides an overview of recent advances in using advanced oxidation processes to remove organic drugs, highlighting their advantages and disadvantages and discussing their application in removing common drugs.
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)
