Article
Chemistry, Multidisciplinary
Feidias Bairamis, Ilaeira Rapti, Ioannis Konstantinou
Summary: In recent years, the interest in photocatalysis has grown rapidly due to its importance in environmental depollution and addressing the energy crisis. Graphitic carbon nitride (g-C3N4) photocatalyst has gained attention for its properties and ease of preparation, although efforts are needed to improve charge carrier separation efficiency. Z-scheme-based heterostructures have emerged as a promising approach for separating charge carriers and enhancing oxidation and reduction capability. This review focuses on the development and application of Z-scheme-based g-C3N4 composite materials in the past three years, particularly their photocatalytic efficiency for addressing emerging pollutants.
CURRENT OPINION IN GREEN AND SUSTAINABLE CHEMISTRY
(2023)
Article
Multidisciplinary Sciences
Is Fatimah, Rizky Zenita Sulistyowati, Adytia Wijayana, Gani Purwiandono, Suresh Sagadevan
Summary: In this study, a highly-effective photocatalyst, NiO/g-C3N4, was successfully synthesized using phyto-mediated-synthesized nickel nanoparticles. The results showed that the composite with 10%wt. nickel content exhibited the highest photocatalytic activity, with degradation efficiencies of 95% for Rhodamine B and 98% for tetracycline.
Article
Chemistry, Physical
Fellipe Magioli Cadan, Caue Ribeiro, Eduardo Bessa Azevedo
Summary: This study optimized the synthesis of g-C3N4 using the Response Surface Methodology and successfully prepared g-C3N4:WO3 heterojunctions, demonstrating good materials homogenization and high photocatalytic activity. A mechanism for the heterostructure photocatalysis was proposed based on theoretical and experimental results.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Mohtaram Danish, Mohammad Saud Athar, Iftekhar Ahmad, Murad Z. A. Warshagha, Ziyaur Rasool, Mohammad Muneer
Summary: The synthesized nanocomposite showed high efficiency in removing organic contaminants in water systems, with good stability and photocatalytic activity. It can reduce the recombination rate of electron-hole pairs, increasing the total carrier charge for improved photocatalytic activity.
APPLIED SURFACE SCIENCE
(2022)
Article
Environmental Sciences
Keding Li, Bowen Zheng, Ling Ding, Chaoyou Tao, Shuai Zhang, Lin Zhang
Summary: With the increasing application of nuclear power technology, the pollution of water ecological environment caused by uranium (U(VI)) has become a serious issue. A novel ternary dual Z-scheme AgVO3-InVO4/g-C3N4 heterojunction (Z-AIGH) nanocomposite with high surface area was designed for the photoreduction separation of U(VI). The Z-AIGH2 nano-composite exhibited excellent U(VI) adsorption performance in dark environment and rapid photocatalytic response for separating U(VI) under visible light irradiation, without requiring any organic sacrifice agents. The high photocatalytic activity of Z-AIGH2 was attributed to its unique structure. The nanocomposite also showed good selectivity and cycle stability, indicating its great potential for water environment renovation.
ENVIRONMENTAL POLLUTION
(2023)
Article
Nanoscience & Nanotechnology
Pham Duc Minh Phan, Duc-Viet Nguyen, Nguyen Hoai Anh, Huynh Phuoc Toan, Pho Phuong Ly, Dai-Phat Bui, Seung Hyun Hur, Thuy Dieu Thi Ung, Do Danh Bich, Hoai-Thanh Vuong
Summary: This study proposes a facile one-step method to fabricate CdS/g-C3N4 nanocatalysts for the production of H2O2 from water and oxygen under light and ultrasound irradiation. The results show that the formation of H2O2 relies on oxygen radical species and is promoted by the interaction between CdS and g-C3N4.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Environmental
Tongyao Liu, Lin Hao, Liqi Bai, Jingang Liu, Yihe Zhang, Na Tian, Hongwei Huang
Summary: Constructing a direct Z-scheme heterojunction Bi2O2(NO3)(OH)/g-C3N4 significantly enhances the separation and transfer of photogenerated carriers, resulting in improved photocatalytic CO2 reduction performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Applied
Chao Liu, Yue Feng, Zitong Han, Yao Sun, Xiaoqiu Wang, Qinfang Zhang, Zhigang Zou
Summary: A Z-scheme N-doped KCN photocatalyst was prepared using a simple method, showing significantly improved photocatalytic activity attributed to the synergistic effects of N-doping and heterojunction formation. This photocatalyst exhibited efficient charge separation and high redox ability, providing a simple approach for constructing large-scale Z-scheme heterojunction photocatalysts with high photocatalytic performance.
CHINESE JOURNAL OF CATALYSIS
(2021)
Review
Chemistry, Physical
Jia Jia, Qiqi Zhang, Keke Li, Yating Zhang, Enzhou Liu, Xin Li
Summary: Graphitic carbon nitride (g-C3N4)-based Z-scheme heterojunction photocatalysts have attracted significant research attention for solar energy conversion and environmental remediation. The unique features of efficient photocarrier separation, visible light response, and spatially separated redox reactive sites contribute to the enhanced photocatalytic performance. This review summarizes recent progress in the construction of g-C3N4-based Z-scheme photocatalysts, including coupling interfaces, hierarchical microstructures, defects and heteroatoms, dual Z-scheme design, and plasmonic and photothermal performances. Photocatalytic applications in water splitting, CO2 reduction, and pollutant degradation are discussed, along with existing challenges and future research opportunities.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Review
Chemistry, Physical
Javier Fernandez-Catala, Rossella Greco, Miriam Navlani-Garcia, Wei Cao, Angel Berenguer-Murcia, Diego Cazorla-Amoros
Summary: Photocatalysis is a promising technology for addressing the environmental crisis. One of the most representative photocatalysts is graphitic carbon nitride (g-C3N4), known for its stability, cost-effectiveness, facile synthesis procedure, and absorption properties in visible light. However, the original g-C3N4 still demonstrates low photoactivity due to quick recombination of photo-induced electron-hole pairs. To overcome this limitation, Z-scheme photocatalysts based on g-C3N4 are considered superior alternatives, as they have the same band configuration but a different charge carrier recombination mechanism.
Article
Chemistry, Applied
Ying Yang, Feng Yang, Zelin Li, Na Zhang, Shijie Hao
Summary: The mesoporous Z-scheme g-C3N4/C/S-g-C3N4 heterostructural nanotube demonstrated high efficiency in degrading MB, RhB, and CR, achieving a remarkable reaction rate for MB degradation under visible light irradiation. The in situ fabrication of high surface area g-C3N4/C/S-g-C3N4 heterostructural nanotube represents a promising approach for enhancing the porous structure and photocatalytic performance of ternary Z-scheme photocatalysts.
MICROPOROUS AND MESOPOROUS MATERIALS
(2021)
Article
Chemistry, Physical
Tauseef Munawar, Faisal Mukhtar, Muhammad Shahid Nadeem, Sumaira Manzoor, Muhammad Naeem Ashiq, Khalid Mahmood, Sana Batool, Murtaza Hasan, Faisal Iqbal
Summary: Direct dual Z-scheme heterostructured nanocomposite TiO2-WO3-CeO2 (NC) and pristine metal oxides nanostructures (NSs) were fabricated using a facile co-precipitation route. The NC exhibited narrow energy bandgap, higher electrical conductivity, and lower recombination rate, showing superior photodegradation and antimicrobial activity, as well as excellent capacitive behavior.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Environmental
Chengqun Xu, Dezhi Li, Xiaolu Liu, Renzhi Ma, Nobuyuki Sakai, Yuchen Yang, Shiyin Lin, Jiale Yang, Hui Pan, Janjer Huang, Takayoshi Sasaki
Summary: In this study, TiO2 thin flakes modified by g-C3N4 quantum dots were successfully fabricated through a facile thermal treatment method. The direct Z-scheme heterojunctions between g-C3N4 QDs and TiO2 flakes enhanced the charge separation efficiency and light absorption, resulting in excellent photocatalytic performance for hydrogen evolution and RhB degradation. This study demonstrates that rational design of heterojunctions is effective in improving photocatalytic performance.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Jiangwen Bai, Jinmeng Xiang, Changheng Chen, Chongfeng Guo
Summary: Polarizations within ferroelectric or pizeoelectric materials promote interior photogenerated carriers separation, improving photocatalytic activity. However, pristine ferroelectric or pizeoelectric semiconductors are limited by insufficient polarization and spectral absorption. In this study, Bi4Ti3-2nCrnNbnO12/x-g-C3N4 (BTCNO-n/x-CN) heterojunctions were prepared by loading ultrathin g-C3N4 on ferroelectric BTCNO synthesized with co-doping of Cr3+-Nb5+ pairs. The doping not only enhances the piezoelectric performance of the heterojunctions but also promotes spectral absorption, leading to improved photocatalytic performance.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
G. Venkatesh, G. Palanisamy, M. Srinivasan, S. Vignesh, N. Elavarasan, T. Pazhanivel, Abdullah M. Al-Enizi, Mohd Ubaidullah, Alamgir Karim, K. M. Prabu
Summary: The perovskite CaSnO3/g-C3N4 heterostructure nanocomposite was successfully prepared via a solid-state route, and its photocatalytic performance was investigated. The introduction of g-C3N4 improved the separation of photogenerated electrons and holes, leading to enhanced photocatalytic efficiency. The synthesized material exhibited high degradation efficiency towards methylene blue dye under UV-visible light, and showed good stability and reuseability.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Chemistry, Analytical
Leila Arjomandi-Behzad, Mohammad Kazem Rofouei, Alireza Badiei, Jahan B. Ghasemi
Summary: In this study, a mesoporous silica-based sorbent SBA-S(4,) was synthesized and successfully used to remove Crystal Violet and Methyl Green dyes. The results showed that the sorbent had high efficiency in eliminating the target analytes and can be reused multiple times with negligible loss of efficiency.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY
(2022)
Article
Materials Science, Ceramics
Elaheh Ranjbarpour Niari, Mohammad Vajdi, Milad Sakkaki, Shahla Azizi, Farhad Sadegh Moghanlou, Mehdi Shahedi Asl
Summary: Spark plasma sintering is an interesting manufacturing method that benefits from electric current heating. In this study, the sintering process of hafnium diboride ceramics was simulated using the finite element method and COMSOL Multiphysics software. The results showed the required temperature for sintering and the distribution of electric current in the system.
INTERNATIONAL JOURNAL OF APPLIED CERAMIC TECHNOLOGY
(2022)
Article
Biochemistry & Molecular Biology
Neda Fayyazi, Tahereh Mostashari-Rad, Jahan B. Ghasemi, Mehran Mirabzadeh Ardakani, Farzad Kobarfard
Summary: In this study, various computational methods were used to identify potential inhibitors for multiple targets associated with COVID-19, including 3CLpro and RdRp. Through virtual screening and other techniques, several promising compounds were discovered, demonstrating their potential as inhibitors for the two targets. Structure simulations and pharmacophore modeling revealed that specific residues play critical roles in dual activities, showcasing the importance of hydrogen bond features in the binding sites.
JOURNAL OF BIOMOLECULAR STRUCTURE & DYNAMICS
(2022)
Article
Chemistry, Physical
Sheida Haji Amiri, Mahdi Ghassemi Kakroudi, Nasser Pourmohammadie Vafa, Mehdi Shahedi Asl
Summary: Fully-dense Ti3SiC2-SiC composites were synthesized in-situ and sintered through a reactive hot-pressing process using TiC and Si powders with different molar ratios. The mechanical properties of the composites were investigated, and it was found that the morphology of the in-situ synthesized SiC particles and the presence of SiC and residual TiC phase significantly influenced the performance of the composites.
Article
Materials Science, Multidisciplinary
Mehran Jaberi Zamharir, Mohammad Zakeri, Mansour Razavi, Mehdi Shahedi Asl
Summary: In this study, ZrB2-SiC-Si-based ceramic composites with WC and MoSi2 additives were fabricated using the SPS method, and their densification behavior was investigated by phase and microstructural studies. The additives reacted with surface oxide impurities of the main raw materials during the SPS process, forming oxide liquid phases and new phases such as MoB, ZrC, and WB, which contributed to the densification of the composites. The sample doped with 2.5 vol% WC and 2.5 vol% MoSi2 showed the highest relative density of about 99%, indicating the effectiveness of the SPS technology in achieving homogeneous and dense parts.
INTERNATIONAL JOURNAL OF REFRACTORY METALS & HARD MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Mehdi Shahedi Asl, Abbas Sabahi Namini, Seyed Ali Delbari, Zohre Ahmadi, Mohammad Farvizi, Dokyoon Kim, Mohammadreza Shokouhimehr
Summary: The addition of carbon fiber and SiC whiskers resulted in a near fully dense ZrB2 composite, with the formation of new SiC and graphite phases reducing the presence of whisker/fiber additives in the microstructure. The synergistic effect between SiC whiskers and carbon fiber also led to the presence of many dislocations originating from plastic deformation during the SPS process and thermal expansion coefficient mismatch between adjacent phases.
MATERIALS CHEMISTRY AND PHYSICS
(2022)
Article
Automation & Control Systems
Shokoofeh Khani, Fatemeh Mohajer, Ghodsi Mohammadi Ziarani, Alireza Badiei, Jahan B. Ghasemi
Summary: A novel and biocompatible colorimetric method was developed for the detection and speciation of Fe3+ and Fe2+ ions. The method relies on the complex formation of these ions with organic compounds in pomegranate peel extract, and can accurately determine their concentrations in real matrix samples using a multivariate model based on absorption spectra. The detection limits for Fe3+ and Fe2+ were found to be 0.53 and 0.14 μg ml(-1), respectively.
JOURNAL OF CHEMOMETRICS
(2023)
Article
Chemistry, Physical
Mitra Mousavi, Mohammad Mehdi Habibi, Gaoke Zhang, Pouran Pourhakkak, Sahar B. Moradian, Jahan B. Ghasemi
Summary: In this study, an n-n heterojunction of ZnO/Sb2MoO6 was developed by a facile procedure and its photocatalytic ability for the N-2 fixation process was explored. The physicochemical analyses of ZnO and Sb2MoO6 in the pure samples and the junction material were conducted to understand their structural, chemical, optical, morphological, and textural features. The optimal performance was achieved with ZnO/Sb2MoO6 (20%) nanocomposite, which showed significantly higher ammonium generation compared to pure ZnO and Sb2MoO6. The research provides insights into achieving superior conversion efficiency in N-2 fixation reactions by utilizing the ZnO/Sb2MoO6 heterojunction.
SURFACES AND INTERFACES
(2022)
Article
Engineering, Chemical
Azin Khamesan, Mohammad Mehdi Esfahani, Jahan B. Ghasemi, Faezeh Farzin, Anita Parsaei-Khomami, Mitra Mousavi
Summary: This study explores the constructional modification of Graphitic carbon nitride nanosheet (GCN-ns) with ZnCr layered double hydroxide (ZC-LDH) to enhance its visible light absorption. The incorporation of ZC-LDH onto the surface of GCN-ns improves its photocatalytic abilities, leading to effective degradation of Rhodamine B under UV/vis light irradiation. The self-production of H2O2 on the GCN-ns/ZC-LDH surface accounts for additional hydroxide radical generation, contributing to the improved performance.
ADVANCED POWDER TECHNOLOGY
(2022)
Article
Environmental Sciences
Htet Htet Naing, Yuan Li, Jahan B. Ghasemi, Junting Wang, Gaoke Zhang
Summary: In this study, montmorillonite loaded BiOCl nanosheets with in situ reduced bismuth were successfully synthesized via a one-step hydrothermal method. The modified photocatalyst showed improved visible light response and broadened light absorption range due to the semi metallic bismuth nanoparticles, leading to enhanced photocatalytic performance for pollutant degradation.
Article
Engineering, Electrical & Electronic
Kourosh Vaferi, Mohammad Vajdi, Sanam Nekahi, Sahar Nekahi, Farhad Sadegh Moghanlou, Shahla Azizi, Mehdi Shahedi Asl
Summary: The effect of applied heat fluxes and geometric parameters on the thermal resistance and cooling capacity of microchannel heat sinks is examined. It is found that changing the rib width can significantly decrease the overall thermal resistance and improve the cooling capacity of the heat sink.
MICROSYSTEM TECHNOLOGIES-MICRO-AND NANOSYSTEMS-INFORMATION STORAGE AND PROCESSING SYSTEMS
(2023)
Article
Chemistry, Inorganic & Nuclear
Anita Parsaei-Khomami, Mitra Mousavi, Mohammad Mehdi Habibi, Kamal Shirzad, Jahan B. Ghasemi, Linxi Wang, Jiaguo Yu, Huogen Yu, Xuanhua Li
Summary: Nanocomposites with outstanding visible light photoelectrochemical characteristics have been synthesized. Ternary chalcogenides (TC) are excellent components in forming nanocomposites with classic semiconductors like TiO2 due to their narrow bandgaps and efficient visible light absorption. TiO2/AgBiS2 binary nanocomposite was successfully synthesized and deposited on FTO via EPD technique in this study. The nanocomposite showed enhanced visible light absorption and reduced bandgaps, confirmed by XRD, FESEM, mapping, and UV-DRS results. Electrochemical characterization and photocatalytic degradation experiments demonstrated its excellent performance in PEC application.
SOLID STATE SCIENCES
(2022)
Review
Food Science & Technology
Fatemeh Barzegar, Samaneh Nabizadeh, Marzieh Kamankesh, Jahan B. Ghasemi, Abdorreza Mohammadi
Summary: The increase in chronic diseases worldwide is a cause for concern, largely due to synthetic additives in processed foods. These additives pose health risks and there is a demand for environmentally friendly, natural-based food additives that promote overall health. Nanoemulsion technology can enhance the solubility, stability, and bioavailability of these natural-based additives, making them potential next-generation food additives. This study provides an overview of the production and effects of natural-based food additives using nanotechnology approaches.
FOOD AND BIOPROCESS TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Mitra Mousavi, Alireza Bonakdar, Anita Parsaei-Khomami, Jahan B. Ghasemi, Pouran Pourhakkak, Mohammad Mehdi Habibi, Mohammad Jafari, Amir H. Jalili, Xuanhua Li
Summary: The design of photocatalysts utilizing sunlight to generate ammonia and remove organic pollutants is important for sustainable chemical industry. A g-C3N4 nanosheet/AgBiS2 nanocomposite with visible-light response was successfully fabricated for the first time. The composite exhibited excellent photocatalytic activity for RhB degradation and N2 fixation, with significant improvements compared to g-C3N4 nanosheet and AgBiS2 alone. The improved activity was attributed to the suitable heterojunction formation, suppressing charge recombination and facilitating transfer.
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
(2023)
Article
Chemistry, Physical
Mozhgan Gholamveysi, Marzieh Ghodrati, Mitra Mousavi, Anita Parsaei-Khomami, Jahan B. Ghasemi, Mohammad Mehdi Habibi, Maryam Shekofteh-Gohari, Parviz Norouzi, Xuanhua Li
Summary: Photoelectrocatalysis is widely used in advanced oxidation processes due to its reduced recombination of charge carriers. This study proposes the formation of a heterojunction between ZnO and MoSe2 to enhance visible light absorption and PEC ability for organic contaminant removal. The as-synthesized nanocomposite was characterized and immobilized onto FTO for electrochemical characterization. The results showed higher PEC activity and recyclability compared to bare ZnO samples, and the operational parameters were investigated to understand their impact on the degradation process.
SURFACES AND INTERFACES
(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)