Journal of Photochemistry and Photobiology A-chemistry最新文献

{"title":"Microfluidic paper-based colorimetric chemo-sensing of formaldehyde using tetramethylbenzidine-conjugated gold nanoflowers: A point-on-demand approach for efficient chemosensing of volatile organic compounds","authors":"Fatemeh Farshchi ,&nbsp;Sanna Ghaffarzadeh ,&nbsp;Mohammad Hasanzadeh ,&nbsp;Nasrin Shadjou","doi":"10.1016/j.jphotochem.2024.116055","DOIUrl":"10.1016/j.jphotochem.2024.116055","url":null,"abstract":"<div><div>The presence of formaldehyde, a common environmental aldehyde and a recognized carcinogen, poses a significant health risk to humans. Monitoring its levels in environmental samples and human biofluids is crucial for both pollution control and advancements in health science. This study introduces an effective colorimetric method utilizing UV–Vis spectroscopy to identify formaldehyde in real samples. Various types of gold nanoparticles (AuNPs) with diverse sizes and structures were employed to develop a photochemical chemosensing device. The method exhibited high sensitivity in detecting formaldehyde, particularly through the use of gold nanoflowers (AuNFs) at a pH of 6.15, with a low quantification limit of 0.1 µM and a linear range of 0.6 µM to 1 M. Furthermore, the method was successfully utilized to assess formaldehyde in human biofluids. Additionally, a paper-based microfluidic colorimetric opto-device was incorporated for on-site and on-demand formaldehyde screening. This study showcases the application of AuNPs for the precise and sensitive detection of formaldehyde in human biofluids, offering potential for advanced analytical methods targeted at formaldehyde and other volatile organic compounds (VOCs). The practicality, affordability, and portability of the microfluidic paper-based colorimetric device (µPCDs) make it a promising choice for point-of-care VOC testing. This represents the first demonstration of µPCDs for the selective photochemical sensing of toxic substances, and its one-step process that does not rely on novel sorbents, membranes, or external stimuli, making it easily scalable. The potential for µPCDs to be broadly applicable to the selective monitoring of formaldehyde from complex bio-matrices is evident. This method demonstrated robust performance in terms of accuracy, sensitivity, reproducibility, and selectivity.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"459 ","pages":"Article 116055"},"PeriodicalIF":4.1,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418824","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced super-ultra-deep photocatalytic oxidative desulfurization by titanium-activated metal-organic frameworks nanophotocataltyst","authors":"Mehdi Beshtar ,&nbsp;Afsanehsadat Larimi ,&nbsp;Ali Akbar Asgharinezhad","doi":"10.1016/j.jphotochem.2024.116056","DOIUrl":"10.1016/j.jphotochem.2024.116056","url":null,"abstract":"<div><div>Addressing the escalating global demand for fossil fuels and the urgent environmental concerns associated with their use necessitates the development and implementation of efficient and cost-effective techniques for the removal of sulfur compounds. In this study, titanium-activated MIL-101(Fe) was utilized for the removal of organosulfur compounds through the photocatalytic oxidation desulfurization (PODS) process. The coexistence of active sites with titanium and iron resulted in an ultra-deep desulfurization. The impact of titanium loading was assessed, with TxML representing the ratio of Ti to Fe (x = 1, 1.5, and 2, respectively). Nanophotocatalysts were fabricated by solvothermal method. The physicochemical properties of the new materials were investigated by performing XRD, TEM, FT-IR, FESEM, EDX, UV–Vis DRS, PL, GC–MS, ESR, TGA, transient photocurrent, and nitrogen adsorption–desorption analyses. The effect of titanium loading on the structure, and performance of photocatalysts in the PODS reaction was investigated. The reaction parameters were optimized for maximum efficiency. Under optimal conditions of T2ML loading at 1.5 g/L, a volumetric solvent to fuel ratio (S/F) of 1, and a temperature of 50 ℃, T2ML shows the best performance by removing 100 % of dibenzothiophene.</div><div>Kinetic experiments revealed that the PODS reaction obeys a pseudo-first order equation, and activation energy is 47.08 kJ.mol⁻¹.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"459 ","pages":"Article 116056"},"PeriodicalIF":4.1,"publicationDate":"2024-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418812","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Application of natural hematite as catalyst in heterogeneous photo-Fenton like process for 2,4-dichlorophenol degradation","authors":"Ensiyeh Taheri ,&nbsp;Ali Fatehizadeh ,&nbsp;Mehdi Khiadani ,&nbsp;Mohammad Ghasemian ,&nbsp;Jorge Bedia","doi":"10.1016/j.jphotochem.2024.116057","DOIUrl":"10.1016/j.jphotochem.2024.116057","url":null,"abstract":"<div><div>This work investigates the degradation of 2,4-dichlorophenol (2,4-DCP) through the combination of hematite and UV light for the activation of sodium percarbonate (SPC) in a heterogeneous photo-Fenton like (HPF) process. The hematite was fully characterised and the effects of different reaction parameters such as pH, doses of hematite and SPC, 2,4-DCP initial concentration, and the presence of co-existing anions were investigated. Under the optimised conditions (pH = 3.0, [Hematite]₀ = 300.0 mg L⁻¹, [SPC]₀ = 500.0 mg L⁻¹), the degradation of 2,4-DCP (50.0 mg L⁻¹) was 99.88 ± 0.05 %. Quenching experiments demonstrated the participation of ¹O₂, O₂^<img>−, CO₃^<img>−, and ^<img>OH radicals in the degradation of 2,4-DCP, with the dominance of ^<img>OH radicals (82.39 %). Furthermore, the degradation of 2,4-DCP was effectively retarded by the presence of Cl⁻, NO₃⁻, CO₃²⁻, and PO₄³⁻ anions in the solution. Overall, the HPF process with hematite can be proposed as an effective and promising approach for the degradation of 2,4-DCP from the waste stream and can be used for the decontamination of other organic compounds due to its stability and feasibility.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"459 ","pages":"Article 116057"},"PeriodicalIF":4.1,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Developing a highly efficient fluorescence strategy for thiamine detection in real samples","authors":"Safieh Momeni ,&nbsp;Hajar Jaberie","doi":"10.1016/j.jphotochem.2024.116064","DOIUrl":"10.1016/j.jphotochem.2024.116064","url":null,"abstract":"<div><div>This research presents the first report of a simple fluorescent approach for determination of thiamine (TH, Vitamin B1) with great sensitivity and selectivity by manganese dioxide (MnO₂) nanosheets. These nanoparticles have several advantages such as activity of oxidase like and easy, low-cost preparation. They can successfully oxidize nonfluorescent TH to intense fluorescence thiochrome at physiological pH and room temperature. Under optimized conditions and in the presence of EDTA and HCl, a linear relationship was gained between fluorescence intensities and thiamine concentrations from 10 to 5000 nM. This fluorometric method demonstrated high sensitivity with a low detection limit (5 nM). In order to confirm the selectivity of the proposed system, related interfering agents were investigated with the MnO₂ nanosheets and it was verified that the fluorescence response is greatly selective to TH. This method exhibited acceptable outcomes to evaluate TH in pharmaceutical, food, urine and serum specimens. Therefore, we suggest that the current study could be appropriate for TH measurement in biological, food and drug samples.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"459 ","pages":"Article 116064"},"PeriodicalIF":4.1,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sustainable photocatalytic H2O2 production in pure water from biomass carbon dots decorated resorcinol–formaldehyde resin","authors":"Haoyuan Qin ,&nbsp;Linhui Li ,&nbsp;Yuanhao Tang ,&nbsp;Chen Cao ,&nbsp;Yatao Zhang ,&nbsp;Feng Guo ,&nbsp;Weilong Shi","doi":"10.1016/j.jphotochem.2024.116058","DOIUrl":"10.1016/j.jphotochem.2024.116058","url":null,"abstract":"<div><div>Photocatalytic production of hydrogen peroxide (H₂O₂) is a promising green strategy to replace conventional industrial production methods. Herein, ginkgo biloba-derived biomass carbon dots (BCDs) were successfully loaded on the surface of resorcinol–formaldehyde (RF) resin by a simple hydrothermal method to form a BCDs/RF composite photocatalyst, which enabled efficient and sustainable photocatalytic H₂O₂ production in pure water without the sacrificial agents and bubbling O₂. The optimal H₂O₂ yield of the BCDs/RF-5 composite catalyst was 1430.31 μmol h⁻¹ g⁻¹ with the solar energy chemical conversion (SCC) efficiency was up to 1.1 %, which was 1.16 times higher than that of pure RF (1222.59 μmol h⁻¹ g⁻¹). A series of testing results illustrate that the BCDs in the BCDs/RF composite not only acted as electron acceptors to enhance the photo-generated charge separation efficiency of RF resin, but also effectively inhibited the decomposition of H₂O₂, and on the other hand improved the yield of photocatalytic H₂O₂ production. This study provides a new strategy for the design and synthesis of RF-based photocatalysts and expands the application of biomass materials in photocatalytic generation of H₂O₂.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"459 ","pages":"Article 116058"},"PeriodicalIF":4.1,"publicationDate":"2024-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Generation of library of dyes for photovoltaic applications: A machine learning assisted framework","authors":"Nafees Ahmad ,&nbsp;Bandar R. Alsehli ,&nbsp;Asif Mahmood ,&nbsp;Yingping Zou","doi":"10.1016/j.jphotochem.2024.116053","DOIUrl":"10.1016/j.jphotochem.2024.116053","url":null,"abstract":"<div><div>The generation of a comprehensive library of dyes and the prediction of their properties is a critical task in the development of novel materials for various applications. This paper presents a machine learning-assisted framework designed to streamline this process by using the power of machine learning. The ultraviolet–visible (UV–Vis) absorption maxima of dyes are predicted using multiple models, Random Forest model has emerged as the most effective. A library of 10,000 dyes is generated and evaluated based on the predicted absorption maxima values, resulting in the selection of 30 promising dyes. An assessment of synthetic accessibility has shown that most of the selected dyes can be synthesized with relative ease. Our proposed farmwork has potential to reduce the need for extensive experimental synthesis and testing.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"459 ","pages":"Article 116053"},"PeriodicalIF":4.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142356655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Photocurrent enhancement in dye-sensitized solar cells by polyimide covalent organic frameworks decorated with silver nanoparticles","authors":"Yu-Hsuan Chen ,&nbsp;Chao-Fang Huang ,&nbsp;Ting-Yu Lo ,&nbsp;Manik Chandra Sil ,&nbsp;Chih-Ming Chen","doi":"10.1016/j.jphotochem.2024.116052","DOIUrl":"10.1016/j.jphotochem.2024.116052","url":null,"abstract":"<div><div>Covalent organic framework (COF), featuring in highly ordered conjugated hexagonal array architecture, gains much attention due to their application potential in emerging energy and optoelectronic technologies. Polyimide-based COF (PI-COF) has alkaline-hydrolyzable imide units that can serve as adsorption sites for the anchorage of metallic nanoparticles, particularly eye-catching for multifunctionality. In this study, Ag nanoparticles (Ag NPs) sizing 5 to 20 nm are evenly attached on the surface of spherical PI-COFs through alkaline hydrolysis, ion exchange, and reduction reactions. The Ag-decorated COF (COF@Ag) are doped into the titania photoelectrode of dye-sensitized solar cell (DSSC) to explore its multifunctionality for the photovoltaic performance. The DSSC with the doping of COF@Ag exhibits a power conversion efficiency of 8.03 % under simulated one sun illumination, outperforming that without the doping of COF@Ag (6.86 %) by an enhancement in the photocurrent from 15.14 mA cm⁻² to 17.31 mA cm⁻². Comprehensive analyses including dye loading, electrochemical impedance, electron kinetics, and light absorption confirms the multifunctionality of COF@Ag. Localized surface plasmon resonance (LSPR) of Ag NPs enhances the photocurrent, and host–guest interaction of COFs facilitates the charge injection and suppresses the charge recombination.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"459 ","pages":"Article 116052"},"PeriodicalIF":4.1,"publicationDate":"2024-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142356660","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhanced Synergistic performance of ZnO@BiOX (X=Cl, Br, I) heterojunction for photocatalytic degradation of emerging pollutants under visible light","authors":"Hiram Joazet Ojeda-Galván ,&nbsp;Daniel Coghlan-Cárdenas ,&nbsp;Sergio Eduardo Negrete-Duran ,&nbsp;Miguel Ángel Vidal ,&nbsp;Javier Alanis ,&nbsp;Maritza Pérez-Valverde ,&nbsp;Lourdes Bazan-Díaz ,&nbsp;Rubén Mendoza-Cruz ,&nbsp;Yeni G. Velázquez-Galván ,&nbsp;Raúl Ocampo-Pérez ,&nbsp;Mildred Quintana ,&nbsp;Hugo R. Navarro-Contreras ,&nbsp;Edgar Giovanny Villabona-Leal","doi":"10.1016/j.jphotochem.2024.116035","DOIUrl":"10.1016/j.jphotochem.2024.116035","url":null,"abstract":"<div><div>In this work, we study the influence of the proportion and halogen type present in heterojunctions of zinc oxide and bismuth oxyhalides ZnO@BiOX (Where X=Cl^-, Br^-, I^- and several binary combinations of them) on the photocatalytic activity in the degradation of rhodamine-B (Rh-B) under visible light, as well as in two important emergent contaminants resorcinol and sulfadiazine. The materials were synthesized by a solvothermal process at 130 °C, starting from ZnO nanoparticles and BiOX precursors (Bi⁺ and X=Cl^-, Br^-, I^- ions). It was found that the best combination of halogens was 75 % Br^- and 25 % Cl^- (ZnO@BiOBrCl bromine-chlorine ratio 3:1) forming a Z-type heterojunction with a time constant of τ = 5.6067 min (κ = τ^-1 = 0.1784 min⁻¹) in the degradation of Rh-B (C₀ = 30 ppm, V_Rxn = 250 mL). The same composite degraded totally resorcinol in 250 min, and 85.2 % of sulfadiazine in 150 min.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"459 ","pages":"Article 116035"},"PeriodicalIF":4.1,"publicationDate":"2024-09-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142418820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Transition metal nickel nanoparticle-decorated g-C3N4 photocatalyst for improving tetracycline hydrochloride degradation","authors":"Oanh T.K. Nguyen ,&nbsp;Vinh Huu Nguyen ,&nbsp;Linh Xuan Nong ,&nbsp;Que-Minh T. Doan ,&nbsp;Lan-Anh T. Hoang ,&nbsp;Kwang Hee Nam ,&nbsp;Taeyoon Lee ,&nbsp;Trinh Duy Nguyen","doi":"10.1016/j.jphotochem.2024.116042","DOIUrl":"10.1016/j.jphotochem.2024.116042","url":null,"abstract":"<div><div>Metallic nickel nanoparticles (Ni⁰ NPs)-supported g-C₃N₄ have been developed using a solvothermal technique in N,N-dimethylformamide solvent. A uniformly dispersion of Ni⁰ NPs anchored on a g-C₃N₄ photocatalyst can improve the photocatalytic efficiency. The optimized Ni/g-C₃N₄ catalyst demonstrated a high photodegradation rate of TCH at 6.0 × 10⁻³ min⁻¹ under LED light irradiation, which was approximately three times greater than that of the bare g-C₃N₄ catalyst. This superior performance originates from the capable separation of electron-hole pairs, facilitated by the strong interaction between Ni⁰ NPs and the host g-C₃N₄, as supported by optical and electrochemical property analysis. Our work provides a facile manner for the effective degradation of pollutants using heterojunction photocatalysts.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"459 ","pages":"Article 116042"},"PeriodicalIF":4.1,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142356653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluations of the effects of the Nd:YAG laser on the structural, optical, spectral, and biological properties of uncoated and silver oxalate-coated mixed cadmium/cobalt oxalate","authors":"M.F. Hasaneen ,&nbsp;E.F. El Agammy ,&nbsp;Shaima M.N. Moustafa ,&nbsp;Amr A. Essawy ,&nbsp;A.M. Nassar ,&nbsp;G.E. Khalil","doi":"10.1016/j.jphotochem.2024.116048","DOIUrl":"10.1016/j.jphotochem.2024.116048","url":null,"abstract":"<div><div>Two oxalate composites were synthesized: CdC₂O₄/CoC₂O₄ (oxalate A) and Ag₂C₂O₄/CdC₂O₄/CoC₂O₄ (oxalate B). These composites were subsequently irradiated with an Nd:YAG laser at wavelengths of 532 nm and 1064 nm. The study aimed to investigate the effects of pulsed laser irradiation on the physical properties and antibacterial activity of these oxalates. X-ray diffraction (XRD) analysis revealed that both oxalate composites were polycrystalline. Laser irradiation led to an increase in average crystal size for both materials. Scanning electron microscopy (SEM) observations confirmed this trend, with a more pronounced effect observed at the longer wavelength of 1064 nm. Oxalate A exhibited a higher optical bandgap compared to oxalate B. Laser irradiation resulted in a bandgap increase for both materials. Photoluminescence peak intensity decreased due to the laser treatment. However, the presence of silver in oxalate B significantly enhanced the luminescence intensity. When examining antibacterial activity, the incorporation of silver into the oxalate composition demonstrated remarkable efficacy in eradicating bacteria and other deleterious microorganisms. Furthermore, the results showed that, under the assumption that all other laser parameters stayed the same; a laser wavelength of 1064 nm produced more effective results in distilled water than a wavelength of 532 nm.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"459 ","pages":"Article 116048"},"PeriodicalIF":4.1,"publicationDate":"2024-09-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142356654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}