Journal of Photochemistry and Photobiology A-chemistry最新文献

{"title":"Ultrafast optical nonlinearities and refraction enhanced optical limiting performance of azonaphthalene dyes","authors":"Deshun Li ,&nbsp;Xuanming Liang ,&nbsp;Xingzhi Wu ,&nbsp;Honglin Shang ,&nbsp;Jie Zhang ,&nbsp;Yu Fang ,&nbsp;Yongqiang Chen ,&nbsp;Fei Wang ,&nbsp;Quanying Wu ,&nbsp;Yinglin Song","doi":"10.1016/j.jphotochem.2026.117157","DOIUrl":"10.1016/j.jphotochem.2026.117157","url":null,"abstract":"<div><div>Azo molecules represent a pivotal class of near-infrared dyes with extensive applications in energy storage/conversion and smart materials. While their nonlinear absorption (NLA) effects have garnered significant attention, the optical limiting (OL) mechanisms and performance of these molecules remain underexplored. This study investigates the near-infrared broadband nonlinear absorption and OL mechanisms of two azo derivatives (<strong>AZON-1</strong> and <strong>AZON-2</strong>) using <em>Z</em>-scan measurement (620–900 nm) and transient absorption spectroscopy. The impact of molecular planarity differences on nonlinear optical responses is analyzed. Ultrafast dynamics are elucidated through transient absorption measurements. These measurements uncover photophysical mechanisms. Notably, <strong>AZON-2</strong> exhibits intensity-dependent transitions from saturation absorption (SA) to reverse saturation absorption (RSA) at 620 nm, attributed to the interplay between SA and excited-state absorption (ESA). Both samples demonstrate robust NLA across 620–900 nm, primarily originating from ESA and two-photon absorption (TPA). The nonlinear responses under 650 nm laser irradiation in OL experiment are simulated. These results are validated via <em>Z</em>-scan techniques and correlated with DFT-derived molecular structure-property relationships. <strong>AZON-1</strong> exhibits a low OL threshold of 11 mJ/cm² at 650 nm with an effective NLA coefficient of 2 × 10⁻¹³ m/W, basically consistent with the Z-scan results. For <strong>AZON-2</strong>, a synergistic SA-RSA fitting model reveals that cooperative SA-RSA effects enhance OL response speed. This work advances the understanding of nonlinear optical properties in azo derivatives, enriching experimental paradigms and providing design guidelines for organic materials with superior nonlinear optical performance.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117157"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387899","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":"Theoretical investigation of crystal structure transformation regulating differential luminescence: The dominant role of the S1-T2 pathway","authors":"Shao-Wen Luo,&nbsp;Yue Ren ,&nbsp;Ming-Yang Li","doi":"10.1016/j.jphotochem.2026.117152","DOIUrl":"10.1016/j.jphotochem.2026.117152","url":null,"abstract":"<div><div>Thermally activated delayed fluorescence (TADF) and organic room temperature phosphorescence (RTP) are triplet-involved emission process governed by the competition between intersystem crossing (ISC) and reverse intersystem crossing (RISC). However, the selective regulation of this competition by molecular packing motifs remains poorly understood. Here, a multiscale theoretical study is conducted on two polymorphs (<strong>GY</strong> and <strong>OR</strong>) of <strong>TPA-CHO</strong> to elucidate the mechanism underlying TADF-RTP conversion. Our results demonstrate that the S₁-T₂ pathway, rather than the conventional S₁-T₁ channel, plays a decisive role in the excited-state population transfer across different aggregation conditions. The <strong>GY crystal</strong> favors TADF due to the reduced S₁-T₂ energy gap and low activation energy, enabling efficient RISC, while the <strong>OR crystal</strong> exhibits RTP behavior driven by enhanced spin-orbit coupling that accelerates ISC. Distinct intermolecular interactions in the two crystal phases further suppress non-radiative decay. This work establishes a clear crystal-regulated photophysical mechanism and provides theoretical insight into the rational control of TADF and RTP emission.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117152"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387920","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":"Visible-light-driven synthesis of DNA-templated gold nanoparticles in biocompatible PEGDA-chitosan nanocomposites","authors":"Elaf Algrairy ,&nbsp;Lotfi Beji ,&nbsp;Haja Tar ,&nbsp;Noura Kouki ,&nbsp;Abrar S. Alnafisah ,&nbsp;Fahad M. Alminderej ,&nbsp;Lotfi M. Aroua","doi":"10.1016/j.jphotochem.2026.117160","DOIUrl":"10.1016/j.jphotochem.2026.117160","url":null,"abstract":"<div><div>A novel, rapid, and eco-friendly photochemical method is presented for the synthesis of gold nanoparticles (AuNPs) and their direct integration into a biocompatible polymer matrix. The technique utilizes a visible-light-absorbing benzophenone derivative(BP-d) as a photoinitiator, triethylamine (TEA) as a co-initiator, and calf thymus DNA (ct-DNA) as a multifunctional template that prevents aggregation, facilitates electron transfer, and provides a scaffold for controlled nucleation. The photochemical mechanism was first tested in an aqueous system, where kinetic analysis revealed that ct-DNA significantly enhances reaction efficiency, enabling the formation of stable AuNPs within 40 s under visible-light irradiation (λ_irr = 419 nm). The optimized BP-d/TEA/ct-DNA system was then employed to initiate photopolymerization within a polyethylene glycol diacrylate (PEGDA)–chitosan matrix, yielding a cross-linked, polymer-confined nanocomposite via a one-pot process. Transmission electron microscopy (TEM) showed quasi-spherical AuNPs with a narrow size distribution (average diameter ≈ 5.9 nm) evenly dispersed within the polymer network. At the same time, Fourier-transform infrared (FTIR) spectroscopy confirmed the formation of a cohesive matrix stabilized by steric and electrostatic interactions. By integrating visible-light photochemistry with biomolecular templating and polymer confinement, this work provides a scalable and sustainable platform for the precise production of Au–polymer nanocomposites. Evaluation of catalytic activity and biological performance is outside the scope of this study and will be addressed in future research.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117160"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387921","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":"Blue shifted push pull Phenalenone dyes: An unconventional behavior in membranes","authors":"J. Robles-Rivero ,&nbsp;C. Silva ,&nbsp;Y.H.A. Cho ,&nbsp;S.A. Sanchez ,&nbsp;R. Ormazábal-Toledo ,&nbsp;G. Gunther","doi":"10.1016/j.jphotochem.2026.117188","DOIUrl":"10.1016/j.jphotochem.2026.117188","url":null,"abstract":"<div><div>Push–pull organic dyes are valuable fluorescent probes due to their sensitivity to environmental polarity. Phenalenone-based systems, however, remain scarcely explored. We investigated three 6-alkylmethylamino phenalenone derivatives in solvents of varying polarity and in liposomal environments. Unexpectedly, all compounds exhibited a consistent blue shift in fluorescence within fluid liposomes, contrasting with the red shifts typically observed in related dyes, such as LAURDAN. The results demonstrate the environmental sensitivity of phenalenone-based dyes. Although they display a trend contrary to that of conventional probes, they nonetheless highlight their potential for investigating polarity in biologically relevant systems.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117188"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387947","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":"Engineering dual photocatalytic sites on an S-scheme MoS2@Co3O4 heterostructure for coupled PMS activation and hydrogen production","authors":"Zenghao Liu ,&nbsp;Hongjie Zhu ,&nbsp;Yanshuo Fan ,&nbsp;Jiakai Ma ,&nbsp;Youyou Hu ,&nbsp;Yan Feng ,&nbsp;Haitao Zhao ,&nbsp;Yao-Yao Wang ,&nbsp;Hui-Juan Wang","doi":"10.1016/j.jphotochem.2026.117175","DOIUrl":"10.1016/j.jphotochem.2026.117175","url":null,"abstract":"<div><div>The wide use of antibiotics poses serious ecological risks due to its environmental persistence and bioaccumulation. Although sulfate radical-based advanced oxidation processes (SR-AOPs) via peroxymonosulfate (PMS) activation exhibit promise for antibiotics elimination, practical applications is limited by excessive oxidant consumption, proton accumulation, and inefficient energy utilization. Herein, we report an S-scheme MoS₂@Co₃O₄ heterojunction that couples Co₃O₄-mediated PMS activation with MoS₂-driven H₂ evolution. The built-in electric field at the MoS₂@Co₃O₄ interface directs photogenerated electrons to MoS₂, enabling proton reduction at H₂ production rate of 2.7 mmol g⁻¹ h⁻¹. Simultaneously, the photocatalysis process accelerates Co³⁺/Co²⁺ cycle in Co₃O₄, enabling sustained PMS activation and radical generation. Under visible-light irradiation the coupled system achieves 97.77% TC degradation within 45 min. By converting reaction-generated protons into H₂, this dual-channel charge-transfer mechanism mitigates effluent acidification and obviates the need for subsequent alkaline dosing. This work provides an energy-compensated process that transforms conventional energy-intensive wastewater treatment into a sustainable system capable of simultaneous pollutant removal and energy recovery, offering new insights into multifunctional environmental catalysts.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117175"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387845","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 thiophene coumarin-based near-infrared fluorescent probe with large stokes shift for detecting endogenous hydrogen peroxide in cellular mitochondria","authors":"Xun Ji ,&nbsp;Xue-Zhi Chu ,&nbsp;Ying-Kun Liu ,&nbsp;Ling Wang ,&nbsp;Jian-Yong Wang","doi":"10.1016/j.jphotochem.2026.117127","DOIUrl":"10.1016/j.jphotochem.2026.117127","url":null,"abstract":"<div><div>Hydrogen peroxide (H₂O₂) is an endogenous oxidizing agent and the most stable reactive oxygen species (ROS) among ROS. It plays an extremely important role in both physiological and pathological processes within organisms. Therefore, a mitochondria-targeted ratiometric probe (<strong>CouPy-CN-H</strong>_{<strong>2</strong>}<strong>O</strong>_{<strong>2</strong>}) was designed and synthesized based on thiophene coumarin as a parent, which uses the p-diboronyltoluene group portion of the probe as a reactive site for H₂O₂, which ensured a high degree of selectivity of the probe for H₂O₂. With the addition of H₂O₂, the p-diboronyltoluene group of <strong>CouPy-CN-H</strong>_{<strong>2</strong>}<strong>O</strong>_{<strong>2</strong>} was cleaved by oxidation reaction, eliminating the p-quinone methyl group to form <strong>CouPy-CN</strong>, resulting in a typical intramolecular charge transfer (ICT) feature, which also caused <strong>Cou-Py-CN</strong> to show red emission. According to photophysical testing, <strong>CouPy-CN-H</strong>_{<strong>2</strong>}<strong>O</strong>_{<strong>2</strong>} exhibited a large Stokes shift, specific response to H₂O₂. Cellular tests showed that <strong>CouPy-CN-H</strong>_{<strong>2</strong>}<strong>O</strong>_{<strong>2</strong>} possessed good biocompatibility and low cytotoxicity. Due to its good cellular biocompatibility, <strong>CouPy-CN-H</strong>_{<strong>2</strong>}<strong>O</strong>_{<strong>2</strong>} was successfully used for real-time tracking of H₂O₂ in mitochondria of living cells.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117127"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387918","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":"Green fluorescence material TBRb enhancing the performance of ternary polymer solar cells via prolonged exciton lifetime and efficient energy transfer","authors":"Qingxiu Fan ,&nbsp;Zhiyong Liu","doi":"10.1016/j.jphotochem.2026.117176","DOIUrl":"10.1016/j.jphotochem.2026.117176","url":null,"abstract":"<div><div>In this study, ternary polymer solar cells (PSCs) were prepared using a D18-Cl:N3 binary film as the host system and 2,8-di(t-butyl)-5,11-di[4-(t-butyl) phenyl]-6,12-diphenylnaphthacene (TBRb) as the third component material. The open-circuit voltage (<em>V</em>_OC) and fill factor (<em>FF</em>) exhibited minimal variation when added small amount of TBRb into D18-Cl:N3 binary film, indicating the formation of a compatible interface between D18-Cl:N3 and TBRb. The power conversion efficiency (PCE) of the optimized ternary PSC (D18-Cl:N3:TBRb ratio of 1:1.3:0.15) increased from 16.25% to 17.27%, and the short-circuit current density (<em>J</em>_SC) increased from 25.62 mA cm⁻² to 27.35 mA cm⁻² relative to that of the D18-Cl:N3 binary PSC. The observed increase in <em>J</em>_SC can be attributed to two factors: first, the energy transfer from TBRb to D18-Cl; second, the TBRb complements the light absorption of the D18-Cl:N3 binary film, particularly in the short-wavelength region. An excess of TBRb results in poor compatibility with D18<img>Cl, which may result in a weakening of the acceptor–donor layer interpenetration. Thus, the excess TBRb disrupts the phase separation and surface morphology and subsequently reduces the exciton dissociation and charge transport and collection efficiencies. Consequently, high-TBRb ternary PSCs exhibited the lowest photovoltaic performance, accompanied by simultaneous reductions in the <em>V</em>_OC, <em>J</em>_SC and FF values. This study provides guidance for the selection of green fluorescent materials as the third component with appropriate compatibility with the binary host photoactive layer.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117176"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387903","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":"Water-dispersible black TiO2 nanodots doped with tungsten: Synthesis and distinctive optical transitions probed by MCD spectroscopy","authors":"Nana Matsuki,&nbsp;Hiroshi Yao","doi":"10.1016/j.jphotochem.2026.117146","DOIUrl":"10.1016/j.jphotochem.2026.117146","url":null,"abstract":"<div><div>Tailoring the optical and electronic properties of titanium dioxide (TiO₂) is known to help enhancing the photocatalytic activity by extending the utilization of solar light to vis-near IR (NIR) region. In this article, we report successful synthesis of tungsten (W) doped <em>black</em> anatase TiO₂ nanodots with high water dispersibility by a facile solvothermal protocol. The black color suggests the formation of defects such as oxygen vacancies and low-valent Ti³⁺ species in the lattices, and high water-dispersibility of the products allows us to perform quantitative optical and magnetic circular dichroism (MCD) spectroscopic characterization in a transmittance mode. We then find that optical absorption intensity in the NIR region decreases with increasing the W-dopant level from 5.5 to 28 at.%, which is unlike the common optical behavior of TiO₂ as a function of the dopant level. Simultaneous deconvolutions of optical absorption and MCD spectra in the vis–NIR region suggest the absence of localized surface plasmon resonance (LSPR) mode, whereas they unveil the existence of two components that are assignable to large polaron and intervalence charge transfer (IVCT) transitions involving both Ti³⁺/Ti⁴⁺ and W⁶⁺/W⁴⁺ species. The present study will give an additional indication for rationalizing the photocatalytic process that can be influenced by polaron population and offer valuable spectroscopic insight into anatase TiO₂ upon doping of aliovalent ions.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117146"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387916","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":"Molecular engineering of Y123-based photosensitizers and copper redox couples for dye-sensitized solar cells: Theoretical perspectives","authors":"MingfengYin,&nbsp;Caibin Zhao,&nbsp;KexinLi,&nbsp;Xiaohu Yu,&nbsp;Tianlei Zhang,&nbsp;Shengrui Zhang","doi":"10.1016/j.jphotochem.2026.117177","DOIUrl":"10.1016/j.jphotochem.2026.117177","url":null,"abstract":"<div><div>In this work, five new copper redox couples are constructed with modifying the [Cu(dmp)₂]^2+/1+ complex, and their oxidation potentials and diffusion coefficients are evaluated in detail by means of DFT calculations and molecular dynamics simulation. Furthermore, five novel D-A-π-A type organic dyes based on Y123 have been designed and their total power conversion efficiencies are theoretically evaluated. The estimated parameters included the short-circuit current density (<em>J</em>_SC), open-circuit voltage (<em>V</em>_OC), filling factor (<em>FF</em>), and power conversion efficiency (<em>η</em>). Results show that introducing auxiliary electron acceptor can significantly reduce the LUMO energy level of Y123, narrow its HOMO-LUMO gap, and greatly expand its light absorption range. All estimated values for Y123 dye nicely match the available experimental ones with small deviations. More importantly, our calculations reveal that the <em>η</em> values of designed dye Y<img>N and Y<img>S are as high as 20.1% and 15.0%, which is much higher than that (10.0%) of Y123 dye, indicating that these two dyes are potential candidates as efficient photosensitizers. The current work not only finds several promising organic dyes, but also provides a new scheme for developing organic dyes with improved properties in efficient DSSC devices.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117177"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387945","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":"Hemp shives conformally-coated by ALD ZnO for a sustainable application in wastewater remediation","authors":"Chiara Laferrera ,&nbsp;Massimo Zimbone ,&nbsp;Libera Vitiello ,&nbsp;Vincenzina Strano ,&nbsp;Gianfranco Sfuncia ,&nbsp;Giuseppe Nicotra ,&nbsp;Valentina Arena ,&nbsp;Alessandra Alberti ,&nbsp;Roberto Fiorenza ,&nbsp;Sabrina Carola Carroccio ,&nbsp;Giuliana Impellizzeri","doi":"10.1016/j.jphotochem.2026.117153","DOIUrl":"10.1016/j.jphotochem.2026.117153","url":null,"abstract":"<div><div>A new hybrid nanocomposite for wastewater treatment was developed using hemp shiv fibers coated with ZnO nanolayers. Macro hemp shives were selected for their adsorption capacity and sustainability, while ZnO provided photocatalytic activity. Low-temperature atomic layer deposition (ALD) anchored ZnO nanolayers with controlled thicknesses (30, 70, 90 nm) onto hydroxyl groups on the hemp shives' surface. The effect of the ZnO thickness on adsorption and photocatalytic performance toward water organic pollutants was systematically investigated. Characterization included spectroscopic ellipsometry, scanning electron microscopy (SEM), transmission electron microscopy (TEM) with electron energy loss spectroscopy (EELS) and selected area electron diffraction (SAED), X-ray diffraction (XRD), thermogravimetric analysis (TGA), N₂ adsorption-desorption analysis, and Fourier transform infrared spectroscopy (FTIR). Methylene blue (MB) adsorption kinetics showed ZnO coatings partially shield the intrinsic adsorption aptitude of pure porous fibers' surface, with a shielding increasing with the ZnO thickness. Photocatalytic activity under UV irradiation was evaluated using three emerging water pollutants: MB dye, sodium dodecyl sulfate (SDS), and phenol. Hemp shives coated with a 30 nm-thick ZnO layer exhibited the highest degradation efficiencies for all the tested pollutants (about 70% after 4 h of light irradiation). Recycling tests confirmed material stability, with preserved ZnO coating and crystal structure after repeated use. Scavenger experiments indicated both radicals and photo-generated holes contribute to photocatalytic mechanism. The synergistic combination of adsorption and photocatalysis makes ZnO-coated hemp shives a promising and sustainable material for advanced wastewater treatment.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"478 ","pages":"Article 117153"},"PeriodicalIF":4.7,"publicationDate":"2026-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147387946","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}