Article
Environmental Sciences
Hristina Lazarova, Rusi Rusew, Kostadin Iliev, Liliya Tsvetanova, Borislav Barbov, Boris Shivachev
Summary: This study focuses on improving the photodegradation efficiency and stability of ETS-10 for the removal of crystal violet and methylene blue by developing Zr-modified catalysts. The Na-K-ETS-10/xZr catalyst with 6 wt% Zr showed the highest efficiency in removing nearly 100% of the dyes.
Article
Materials Science, Multidisciplinary
Shuaib Edakkaparamban, Masaki Kitamura, Yuki Ide, Kazuo Umemura, Asuka Ishizawa
Summary: A facile hydrothermal method was used to synthesize undoped carbon quantum dots (UCQDs) and N-doped carbon quantum dots (NCQDs) from coconut husk. The optical properties and photocatalytic behavior of these carbon quantum dots in degrading methylene blue dye were investigated under white light irradiation. Moreover, the photocatalytic behavior of the NCQDs in different pH values of the dye was studied. The results showed that the NCQDs performed as a superior photocatalyst, degrading 94% of the MB dye within 150 minutes and maintaining uniform performance in the pH range from 3 to 10.
Article
Materials Science, Ceramics
Yabin Zhang, Haibei Tan, Chunfang Wang, Bowen Li, Hao Yang, Haitao Hou, Changfa Xiao
Summary: A TiO2-coated glass hollow fiber membrane was successfully synthesized and its photocatalytic removal of methylene blue from wastewater was investigated. The results showed that the membrane had good photocatalytic and antifouling properties, significantly improving the removal of methylene blue compared to the basement membrane. The membrane could be recycled multiple times with a high removal degree of methylene blue.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Environmental Sciences
Thiago Sousa E. Sousa, Eduardo de Paulo Ferreira, Patricia Angelica Vieira, Miria Hespanhol Miranda Reis
Summary: The photocatalytic degradation of methylene blue was investigated using dispersed and supported zinc oxide as catalysts. The efficiency of the catalyst was found to be strongly correlated with the initial dye concentration. The treated solutions showed low toxicity and the catalyst exhibited good stability.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Veena Sodha, Hardik Koshti, Rama Gaur, Irfan Ahmad, Rajib Bandyopadhyay, Syed Shahabuddin
Summary: The rapid increase in wastewater generation due to industrial expansion poses a risk to human health and the environment. Novel materials and technologies for textile wastewater treatment are being developed. This study presents the photocatalytic degradation of methylene blue using ZSM-5 zeolite-doped polyaniline composites. Different weight ratios of ZSM-5 were used to synthesize the composites, and their photocatalytic performance was assessed.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Physical
Zubair Aslam, Raja Saifu Rahman, Mohd Shoab, Zubair M. S. H. Khan, M. Zulfequar
Summary: This study reports the solvothermal synthesis of CuCdS2 nanoparticles assisted by ethylene glycol. The crystalline nature of the material with a hexagonal phase is confirmed by X-ray diffraction pattern. The average particle size of the synthesized material is 37 nm, as revealed by FE-SEM micrographs. UV-Visible absorption results show that the nanoparticles have a wide range of absorption up to the mid-visible region, with an optical band gap of 1.67 eV. The synthesized material exhibits a photocatalytic response, degrading 68.5% of Methylene Blue (MB) under solar irradiation.
CHEMICAL PHYSICS LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Ying-jie Song, Hai-chao Li, Zi-wei Xiong, Long Cheng, Miao Du, Zun-qi Liu, Jun Li, De-qiang Li
Summary: This study used waste sawdust to prepare TiO2/C composites, which were used to effectively degrade methylene blue (MB) under simulated sunlight. The carbon component in the composite significantly enhanced sensitization, resulting in a wider visible light absorption and decreased charge recombination rate. The MB degradation efficiency reached nearly 100% within 30 minutes in the presence of TiO2/C composites, and the material showed sustained performance after multiple cycles. This green and low-cost preparation method offers a sustainable and efficient alternative to reduce the consumption of fossil resources.
DIAMOND AND RELATED MATERIALS
(2023)
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, Inorganic & Nuclear
Abhishek Bhapkar, Rishi Prasad, Dipika Jaspal, Mandar Shirolkar, Kh. Gheisari, Shekhar Bhame
Summary: Zinc oxide nanoparticles were successfully synthesized using glycine nitrate solution combustion synthesis. The synthesized nanoparticles exhibited a pure hexagonal wurtzite-like structure of ZnO. They showed effective visible light catalytic activity in the degradation of methylene blue dye, degrading 98% of the dye in 120 minutes with 0.1 g/L of catalyst loading. Photoluminescence studies suggested that the enhanced photocatalytic activity may be attributed to the presence of singly ionized oxygen vacancy or intrinsic defects.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
Article
Physics, Multidisciplinary
H. A. Alburaih, Salma Aman, Naseeb Ahmad, Syeda Rabia Ejaz, Rabia Yasmin Khosa, Abdul Ghafoor Abid, Sumaira Manzoor, Hafiz Muhammad Tahir Farid, Muhammad Suleman Waheed, T. A. Taha
Summary: The growing population has caused an increase in water contamination, prompting the development of an efficient and eco-friendly catalyst to remove pollutants from water bodies. This study presents the development of a Sm-doped Fe2O3 photocatalyst through a low-cost sol-gel route for degrading methylene blue under sunlight. Various characterizations were conducted to analyze the photocatalyst, confirming the successful doping of Sm and the enhanced photocatalytic performance attributed to structural variations and efficient charge carriers separation/transportation. The synergistic photocatalytic performance of the doped catalyst proves its potential in water remediation.
CHINESE JOURNAL OF PHYSICS
(2023)
Article
Environmental Sciences
Wei Gao, Yufeng Li, Jitao Zhao, Zhe Zhang, Weiwei Tang, Jun Wang, Zhenyu Wu
Summary: Reduced graphene oxide (rGO)/TiO2 nanocomposites, synthesized through a hydrothermal technique, were used as photocatalysts to effectively degrade methylene blue (MB) in industrial dyestuff wastewater. The degradation efficiency of the nanocomposites for MB was as high as 98.18% at 5wt.% rGO content, 0.4 g L-1 rGO/TiO2 content, pH 6, and 60 mg L-1 MB concentration. The photocatalytic degradation mechanism involved immediate oxidative degradation and the combined action of O-2(center dot-), OH(center dot), and h(+) species. The degradation kinetic of the nanocomposites for MB followed a first-order model under UV irradiation.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Green & Sustainable Science & Technology
Tianyu Yang, Yu Liu, Guangda Xia, Xiaodong Zhu, Yu Zhao
Summary: The utilization of the multilevel pore structure of natural wood for synthesizing titanium dioxide resulted in a material with improved adsorption and photocatalytic properties. Characterization using SEM, TEM, and X-ray diffraction revealed the presence of anatase and rutile phases in the prepared titanium dioxide.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Materials Science, Multidisciplinary
E. Thenmozhi, M. Harshavardhan, S. Kamala-Kannan, V Janaki
Summary: A shell-type mesoporous silica-manganese dioxide (MPS-(MnO2)) nanocomposite was prepared and studied for its photodegradation of Methylene blue (MB) in synthetic solution under visible light. SiO2 doping was found to decrease the band gap of MnO2, increasing the visible light absorption. Under optimized conditions, MPS-(MnO2) efficiently degraded 89.4% of MB from the synthetic solution.
Article
Polymer Science
Ximena Jaramillo-Fierro, Sneyder Gaona, John Ramon, Eduardo Valarezo
Summary: In this study, GP and GTA geopolymeric materials were prepared and characterized. The compounds showed high adsorption capacity and photocatalytic activity for the degradation of MB dye. The incorporation of ZnTiO3/TiO2 in the geopolymeric matrix allowed GTA to achieve higher overall efficiency compared to GP, combining adsorption and photocatalysis. The synthesized compounds could be used for multiple cycles for the removal of MB from wastewater.
Article
Chemistry, Inorganic & Nuclear
Di Yang, Yanyun Che, Mengtao Wang, Qingdong Miao, Dong Fang, Sui Peng, Jianhong Yi, Qinhong Yin, Olim Ruzimuradov
Summary: In this work, Na5V12O32 nanowires on Ti foil were prepared by a hydrothermal method, and then V2O5/ BiVO4 nanowires were fabricated by a controllable ion-exchange and calcination methods. The samples were characterized by various techniques. After the ion-exchange process, nanosheets were observed on the surface of the nanowires, which could be transformed into nanoparticles after calcination. The V2O5/BiVO4 nanowires exhibited higher photogenerated charge carrier separation efficiency and better photocatalytic degradation of methylene blue compared to BiVO4.
INORGANIC CHEMISTRY COMMUNICATIONS
(2023)
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)