Journal of Photochemistry and Photobiology A-chemistry最新文献

{"title":"Photochromic and long persistent luminescence properties of Bi3+ doped SrGa4O7","authors":"Yaping Niu ,&nbsp;Fugen Wu ,&nbsp;Yifu Zhuo ,&nbsp;Jie Li ,&nbsp;Qi Zhang ,&nbsp;Yun Teng ,&nbsp;Xiaozhu Xie ,&nbsp;Huafeng Dong ,&nbsp;Zhongfei Mu","doi":"10.1016/j.jphotochem.2025.116800","DOIUrl":"10.1016/j.jphotochem.2025.116800","url":null,"abstract":"<div><div>Materials with both photochromic properties (PC) and persistent luminescence (PersL) are increasingly being used in promising applications such as optical information storage and anti-counterfeiting. In this work, a novel afterglow material SrGa₄O₇(SGO): Bi³⁺synthesized by high-temperature solid-phase method was presented, and its photochromic and afterglow properties was investigated and analyzed. The SGO: 0.05Bi³⁺ phosphor transforms from white to light brown at 254 nm, and reverts from light brown to white at 450 nm. Yellow-green persistent luminescence can be observed for SGO: 0.05Bi³⁺ phosphor after 254 nm irradiation. The thermoluminescence (TL) spectrum shows two major traps within SGO: 0.05Bi³⁺ with depths of 0.786 and 1.016 eV. The trap located at the 0.786 eV energy level is considered to be the key contributor to the phosphor afterglow. Coexistence of PersL and PC properties in a single material provides new ideas for innovations in anti-counterfeiting, information encryption and optical data storage technologies.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116800"},"PeriodicalIF":4.7,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155084","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":"Efficient algae inactivation by self-floating carbon-fiber cloth deposited with Ag/Ag3PO4 photocatalyst: Performance, mechanism and application insights","authors":"Tingting Li ,&nbsp;Yuxi Lin ,&nbsp;Xuyan Zhao ,&nbsp;Zikang Sun ,&nbsp;Yuxuan Min ,&nbsp;Xiangshang Wang ,&nbsp;Xinman Tu ,&nbsp;Jinwen Li","doi":"10.1016/j.jphotochem.2025.116779","DOIUrl":"10.1016/j.jphotochem.2025.116779","url":null,"abstract":"<div><div>Photocatalysis represents a promising technology for solving the environmental pollution problems of cyanobacterial bloom due to its simple operation, low energy consumption and high efficiency. However, photocatalysts usually confront with some drawbacks, including long-term treatment, low recyclability and secondary pollution. Herein, we report a self-floating photocatalyst of flexible carbon-fiber cloth (CC) deposited with Ag/Ag₃PO₄ with tunable morphologies(spheres, tetrahedrons, dodecahedrons, and cubes). Among the self-floating photocatalysts, the CC (3 cm × 3 cm) deposited with spherical Ag/Ag₃PO₄ (S-AP/CC) catalyst exhibited optimal efficiency of 99.99 % in inactivating <em>Microcystis aeruginosa</em> (OD₆₈₀ = 0.6), while 92.32 % in degrading microcystin-LR under visible light irradiaiton. The excellent photocatalytic activity of S-AP/CC is mainly attributed to the synergistic effect of high surface activity of spherical Ag/Ag₃PO₄, surface plasmonic resonance effect of Ag nanoparticles and Schottky barrier of Ag/Ag₃PO₄ contact interface. Furthermore, the S-AP/CC photocatalyst also exhibited remarkable reusability and stability after eight cycling tests. The active species quenching experiments and ESR spectra confirmed that •O₂⁻ and H₂O₂ played significant roles in photocatalytic algal inactivation. This work opens up novel insight into the design and construction of effcient and recyclable self-floating photocatalysts for removing harmful algae contamination.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116779"},"PeriodicalIF":4.7,"publicationDate":"2025-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145109218","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":"Long-lived green phosphorescent carbon dots in aqueous solution for anti-counterfeiting and encryption","authors":"Yanni Jie ,&nbsp;Ting Meng ,&nbsp;Zengbo Fan ,&nbsp;Fuchun Li ,&nbsp;Jiang Yan ,&nbsp;Penggao Dai","doi":"10.1016/j.jphotochem.2025.116798","DOIUrl":"10.1016/j.jphotochem.2025.116798","url":null,"abstract":"<div><div>Long-lived room-temperature phosphorescence (RTP) carbon dots (CDs) face challenges in achieving aqueous-phase stability and color-tunable emission. Herein, we report the chitosan-derived carbon dots (CTS-CDs) with outstanding RTP properties prepared via molten salt method. The CTS-CDs exhibit long-lived green phosphorescence with lifetime up to 1.07 s and photoluminescence quantum yield (PLQY) of 13.4 %. Notably, CTS-CDs retain green phosphorescence even in aqueous solution, maintaining RTP lifetime of 361 ms. Structural analyses reveal that the rigid MgO matrix and co-doping of N, P, and Mg elements improves the RTP performance and stability by reducing non-radiative decay pathways. This research highlights the potential of CTS-CDs as eco-friendly, stable, and highly effective materials for secure information display, offering a new approach to developing next-generation RTP materials for a wide range of practical applications.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116798"},"PeriodicalIF":4.7,"publicationDate":"2025-09-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145109375","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":"Synthesis, fluorescence properties of diaminodicyanoquinodimethanes and their application of sensing pH in extremely acidic environment","authors":"Ji-Lin Guo,&nbsp;Ye-Tong Liu,&nbsp;Wan-Xin Ye,&nbsp;Wei Wang,&nbsp;Shi-Hang Yang,&nbsp;Gui-Yuan Chen,&nbsp;Hong-Jie Cui,&nbsp;Zhao-Yang Wang","doi":"10.1016/j.jphotochem.2025.116792","DOIUrl":"10.1016/j.jphotochem.2025.116792","url":null,"abstract":"<div><div>In this work, a series of diaminodicyanoquinodimethanes (DADQ) were designed and synthesized by using tetracyanoquinodimethane (TCNQ) and secondary amines as reactants. They are found to be novel D-π-A-type molecules with dual-state emission (DSE) and can be applied to pH detection. For probe <strong>T4</strong>, when the pH value is greater than 2.6, <strong>T4</strong> is a yellow solution in THF and shows green fluorescence under ultraviolet light. As the pH value decreases, the fluorescence intensity gradually weakens and the yellow solution slowly becomes lighter. When the pH value is lower than 0.8, the fluorescence intensity approaches the quenched state, and the yellow solution is nearly colorless. No significant interference with pH detection has been observed in the presence of various metals and anions. In addition, <strong>T4</strong> can be used for real-time and reversible pH sensing. Finally, the <strong>T4</strong> probe has not only been used for the detection of pH value in solutions, but also has been successfully made into portable test strips for visual detection.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116792"},"PeriodicalIF":4.7,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106453","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":"Nitrite and halides exacerbate the formation of nitrated byproducts during UV/H2O2 oxidation","authors":"Hailing Chu ,&nbsp;Teng Zhang ,&nbsp;Peizeng Yang ,&nbsp;Yuefei Ji ,&nbsp;Jing Chen ,&nbsp;Deyang Kong ,&nbsp;Junhe Lu","doi":"10.1016/j.jphotochem.2025.116797","DOIUrl":"10.1016/j.jphotochem.2025.116797","url":null,"abstract":"<div><div>The UV activated hydrogen peroxide (UV/H₂O₂) oxidation process has been recognized as an effective and environmentally friendly approach for wastewater treatment. However, this study reveals that the existence of nitrite (NO₂⁻) can result in the generation of harmful nitrated byproducts in the UV/H₂O₂ system. The presence of halides, such as bromide (Br⁻), further enhances their formation. Br⁻ can interact with •OH to produce bromine radicals and free bromine. Instead of being reduced back by H₂O₂, these reactive bromine species can rapidly combine with NO₂⁻, yielding nitryl bromide (BrNO₂). Subsequently, natural organic matter (NOM) can be attacked by BrNO₂, yielding nitrated byproducts. The yield of nitrated byproducts reached 0.902 μM in 4 h when Br⁻ and NO₂⁻ (both at 200 μM) coexisted in the UV/H₂O₂ system containing 5 mg_C/L NOM. Compared to Br⁻, even higher nitrated byproducts formation was observed in the presence of iodide (I⁻), whereas the influence of chloride (Cl⁻) was less significant. This can be attributed to the redox potential of free halogen species (HOX), which positively correlates to their likelihood of being reduced by H₂O₂. These findings enhance the understanding of the interplay between halides and NO₂⁻ in the UV/H₂O₂ oxidation process, highlighting potential risks of nitrated products associated with the application of this technology to water containing halides and NO₂⁻</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116797"},"PeriodicalIF":4.7,"publicationDate":"2025-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145155085","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":"A MOF-driven strategy for titanium and phosphorus Co-doping hematite photoanodes to enhance water oxidation","authors":"Nan Chen ,&nbsp;Ying Xiao ,&nbsp;Hanbo Li ,&nbsp;Kaiqi Nie ,&nbsp;Xiaoxin Lv ,&nbsp;Jiujun Deng","doi":"10.1016/j.jphotochem.2025.116790","DOIUrl":"10.1016/j.jphotochem.2025.116790","url":null,"abstract":"<div><div>Element doping is an effective strategy to boost the photoelectrochemical (PEC) performance of hematite by significantly increasing the carrier density to facilitate charge dynamics. In this study, a Ti and P co-doped hematite photoanode was successfully synthesized using titanium phosphonate metal-organic framework (TiP MOFs) as the precursor. It demonstrates that the synergistic effect of Ti and P co-doping effectively promotes the separation and transport of photogenerated charge carriers both in the bulk and on the surface of the photoanode. Consequently, the resulting photoanode exhibits a remarkably enhanced photocurrent density of 2.84 mA·cm⁻² at 1.23 V vs. RHE, approximately 3.3 times higher than the pristine sample. This study provides a promising pathway for the design of element-doped hematite photoanodes with enhanced PEC water oxidation performance.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116790"},"PeriodicalIF":4.7,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145118791","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":"Structurally stable Ag/Ag2O@MOF-808 photocatalysts for efficient photodegradation of high-concentration Rhodamine B","authors":"Songshan Jiang,&nbsp;Lin Xu,&nbsp;Fan Wu,&nbsp;Rui Wen,&nbsp;Meiling Yang,&nbsp;Bai He,&nbsp;Wei Xiong,&nbsp;Huan Yi","doi":"10.1016/j.jphotochem.2025.116789","DOIUrl":"10.1016/j.jphotochem.2025.116789","url":null,"abstract":"<div><div>The development of stable and efficient MOF-based photocatalysts is essential for the treatment of high-strength dye wastewater. In this study, Ag/Ag₂O@MOF-808 surface heterojunction photocatalysts were synthesized by a low-temperature impregnation calcination method. Comprehensive structural analyses (XRD, FT-IR, SEM, TEM, BET, H₂-TPR, XPS) confirmed successful silver loading without damaging the MOF-808 framework. By adjusting the calcination temperature, both Ag⁰ and Ag₂O were introduced to form surface heterojunctions with MOF-808. UV–vis DRS and valence band XPS showed that Ag₂O reduced the band gap and valence band position, improving light absorption and charge separation. The optimized catalyst (10 wt% Ag, 150 °C) achieved 98.1 % degradation of Rhodamine B (25 mg/L) under UV light within 60 min and maintained 88.8 % efficiency (within 180 min) at 100 mg/L. The catalyst exhibited excellent reusability with 0.417 % Ag⁺ leaching and over 73 % activity retention after four cycles. Radical scavenging experiments identified superoxide radicals as the dominant reactive species. The enhanced performance is attributed to the synergistic effect of Ag₂O as the active phase, Ag⁰ as a conductive bridge, and MOF-808 as a stable support. This work offers a controllable, oxidant-free strategy for efficient photocatalytic degradation of hazardous dyes in wastewater.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116789"},"PeriodicalIF":4.7,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145109376","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":"CoMn2O4: a straightforward manufacturing method for effective acebutolol removal upon visible light","authors":"Abderraouf Soukeur ,&nbsp;Imane Akkari ,&nbsp;Marta Pazos ,&nbsp;Mohamed Mehdi Kaci","doi":"10.1016/j.jphotochem.2025.116795","DOIUrl":"10.1016/j.jphotochem.2025.116795","url":null,"abstract":"<div><div>There is a significant worldwide worry regarding pollution caused by pharmaceuticals. Therefore, it is of utmost importance to develop an efficient preventive approach to address this situation. Herein, CoMn₂O₄ was synthesized through a co-precipitation technique. To comprehensively investigate the crystalline phase, morphology, microstructure, and optical and electrochemical properties of the manufactured photocatalyst, multiple methodologies were employed. The photocatalytic efficacy of the obtained CoMn₂O₄ sample was assessed by decomposing acebutolol (ACB) under visible lighting exposure. After 180 min of illumination, the results revealed that CoMn₂O₄ exhibited exceptional efficacy, with an improvement of 91.3 %, approximately 78.44 and 40.25 times higher than photolysis and adsorption alone, respectively. The catalyst exhibited excellent stability and reliability, maintaining substantial performance across 5 successive cycles. Scavenger experiments revealed that hydroxyl radicals (^•OH) and superoxide radicals ^•O₂⁻ are the primary reactive species that trigger the decomposition of acebutolol, whereas holes (h⁺) and electrons (e⁻) contribute to a lesser extent. Crucially, based on the data, a plausible mechanism for ACB decomposition was proposed. Crucially, the biocompatibility of the ACB solution following treatment with CoMn₂O₄ was examined by growing lentil seeds. Given its straightforward manufacturing method and remarkable efficacy, the generated CoMn₂O₄ photocatalyst is appropriately suited for wastewater detoxification. This design approach opens new possibilities for creating highly efficient photocatalysts and lays the groundwork for future progress in the promising field of environmental remediation. This research sets the stage for manufacturing innovations in the near future.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116795"},"PeriodicalIF":4.7,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145109378","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":"Study of Cs adsorption on Mg-doped β-Ga2O3(100) surface: A first-principles investigation","authors":"Zihang Zhu ,&nbsp;Lin Yin ,&nbsp;Yijun Zhang ,&nbsp;Xiaodong Yang ,&nbsp;Liang Chen ,&nbsp;Yang Shen","doi":"10.1016/j.jphotochem.2025.116784","DOIUrl":"10.1016/j.jphotochem.2025.116784","url":null,"abstract":"<div><div>β-Ga₂O₃ is an ideal solar-blind ultraviolet (UV) photocathode material due to its ultra-wide bandgap, high electron mobility and excellent stability. However, its p-type surface sensitization mechanism remains unclear. In this work, we employ first-principles calculations to systematically investigate the effect of different Cs adsorption sites and coverages on the surface stability, electronic structure, and optical properties of the Mg-doped β-Ga₂O₃(100) surface. These findings demonstrate that for single Cs atom adsorption, the B₂ site (bridge site between Mg atom and Ga atom) exhibits the highest adsorption stability. As the Cs coverage gradually increases, the adsorption energies increase while remaining negative, providing strong thermodynamic evidence for the stability of the adsorption process. Regarding the electronic structure characteristics, the work function initially decreases and then increases, reaching its minimum value at 0.5 monolayer (ML) Cs coverage. In-depth analysis reveals that with increasing Cs coverage, the conduction band minimum (CBM) and the valence band maximum (VBM) exhibit a downward energy shift. When the coverage exceeds 0.5 ML, the Fermi level enters the conduction band, and the surface transforms into an n-type state. In terms of optical properties, Cs adsorption significantly enhances the photodetection capability of the Mg-doped β-Ga₂O₃(100) surface photocathode in the solar-blind UV, improving the material's response efficiency to optical signals within the solar-blind UV band.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116784"},"PeriodicalIF":4.7,"publicationDate":"2025-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145109328","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":"Environmentally benign biophotovoltaic cell using thylakoid membrane and graphene–cellulose nanocomposite for solar energy harvesting and photoelectrochemical monitoring of waterborne herbicides","authors":"Mustafa Buyukharman ,&nbsp;Deniz Ozkan Vardar ,&nbsp;Oyku Gizem Cam ,&nbsp;Huseyin Bekir Yildiz","doi":"10.1016/j.jphotochem.2025.116796","DOIUrl":"10.1016/j.jphotochem.2025.116796","url":null,"abstract":"<div><div>This study explores the potential of biophotovoltaic devices (BPVs) as sustainable solutions to global energy and environmental challenges. Utilizing biocomponents such as chlorophylls, green algae and cyanobacteria, BPVs convert sunlight into renewable energy via photosynthesis. Carbon-based electrodes, particularly graphene, have gained attention due to their affordability, superior electrical conductivity, and mechanical stability. While reduced graphene oxide is commonly employed, recent research highlights the superior current-harvesting properties of non-oxidized graphene, warranting further investigation. Additionally, one-dimensional nanomaterials like electrospun nanofibers present promising opportunities to enhance charge collection and electron transfer efficiency. In this context, a novel photoanode was designed, integrating thylakoid membranes immobilized on a graphene-cellulose acetate electrospun nanofiber matrix, fostering effective cyanobacterial adhesion and electron transfer. The cathode employed a gold electrode coated with P(DTP-NH₂) via electrochemical deposition, subsequently functionalized with bilirubin oxidase using glutaraldehyde activation. The system achieved a peak power density of 56.2 mW/m² and a stable current density of 100 mA/m². Beyond electricity generation, the BPV demonstrated herbicide biosensing capabilities, detecting atrazine with a detection range of 0.1–1.2 μM and a detection limit of 9.2 nM. Recovery studies confirmed the system's reliability as a biosensor, underscoring its dual functionality in renewable energy generation and environmental monitoring.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116796"},"PeriodicalIF":4.7,"publicationDate":"2025-09-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145106454","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}