Journal of Photochemistry and Photobiology A-chemistry最新文献

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Synthesis, photophysical properties, and monitoring photoisomerization of carbazole-based N-acylhydrazone compound using ion mobility mass spectrometry 咔唑基n -酰基腙化合物的合成、光物理性质及离子迁移质谱法光异构化监测
IF 4.1 3区 化学
Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-07-16 DOI: 10.1016/j.jphotochem.2025.116643
Elif Keskin , Serhat Ozturk , Mehmet Atakay , Ayse Uzgoren-Baran , Bekir Salih
{"title":"Synthesis, photophysical properties, and monitoring photoisomerization of carbazole-based N-acylhydrazone compound using ion mobility mass spectrometry","authors":"Elif Keskin ,&nbsp;Serhat Ozturk ,&nbsp;Mehmet Atakay ,&nbsp;Ayse Uzgoren-Baran ,&nbsp;Bekir Salih","doi":"10.1016/j.jphotochem.2025.116643","DOIUrl":"10.1016/j.jphotochem.2025.116643","url":null,"abstract":"<div><div>The field of organic chemistry has long been fascinated by the versatility and potential of N-acyl hydrazone compounds. These compounds have attracted significant attention due to their remarkable pharmacological properties, diverse synthetic applications, and attractive structural features. Literature has shown that these structures are known to have photo-reactive properties and could cause reversible E/Z isomerization reactions under UV irradiation and heating conditions. We focused on investigating the structure of the acylhydrazone, which has an <em>ortho</em>-pyridine ring derivative. Compound <strong>PyAc</strong> (Pyridine <em>N</em>-Acylhydrazone) was synthesized for the first time, and reversible E/Z isomerization explanation via hydrogen bond through the pyridine ring has been presented in the literature. <sup>1</sup>H NMR and Attached Proton Test (APT) NMR observed the behavior of compound <strong>PyAc</strong> under these conditions. Structural alterations of the <strong>PyAc</strong> towards UV light application were investigated by trapped ion mobility spectrometry-time-of-flight-mass spectrometry (TIMS-TOF-MS) technique in the positive ion mode. Ion mobility-mass spectrometry (IM-MS) analyses provided structural information on the monomeric and dimeric forms of <strong>PyAc</strong> with singly charged cations such as Li<sup>+</sup>, Na<sup>+</sup>, K<sup>+</sup>, and Ag<sup>+</sup>. These analyses demonstrated that the UV light application to <strong>PyAc</strong> induces structural alterations. The interactions of different metal cations with <strong>PyAc</strong> were provided to distinguish between bare and UV-irradiated <strong>PyAc</strong> in the gas phase.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"470 ","pages":"Article 116643"},"PeriodicalIF":4.1,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144670970","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}
引用次数: 0
Photocatalytic selective oxidation of 1-naphthol under red light using SBA-15-supported zinc phthalocyanine sba -15负载的酞菁锌在红光下光催化选择性氧化1-萘酚
IF 4.1 3区 化学
Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-07-16 DOI: 10.1016/j.jphotochem.2025.116640
Yaşar Gök , Recep Erdem , Halil Zeki Gök
{"title":"Photocatalytic selective oxidation of 1-naphthol under red light using SBA-15-supported zinc phthalocyanine","authors":"Yaşar Gök ,&nbsp;Recep Erdem ,&nbsp;Halil Zeki Gök","doi":"10.1016/j.jphotochem.2025.116640","DOIUrl":"10.1016/j.jphotochem.2025.116640","url":null,"abstract":"<div><div>Naphthoquinones are important redox-active compounds with broad applications in pharmaceuticals and materials science. Their sustainable synthesis via photocatalytic oxidation of naphthols has attracted increasing attention due to its environmental compatibility. In this study, a zinc phthalocyanine-functionalized mesoporous silica material (SBA-15-ZnPc) was synthesized and evaluated as a heterogeneous photocatalyst for the visible-light-driven oxidation of 1-naphthol to 1,4-naphthoquinone. The photocatalyst was prepared by covalently anchoring hydrobenzoin-substituted ZnPc onto chloropropyl-functionalized SBA-15. Characterization by FT-IR, solid-state UV–Vis, TGA, SEM, TEM, BET, and XRD confirmed successful immobilization and structural integrity. SBA-15-ZnPc exhibited strong absorption at 683 nm and a narrow band gap, enabling efficient activation under red LED light. Photocatalytic tests demonstrated excellent activity, selectivity (&gt;95 %), and reusability in air at room temperature. Under optimized conditions, a 97.7 % conversion was achieved in 15 min. No leaching of ZnPc was detected after multiple cycles. Compared to other reported systems, SBA-15-ZnPc showed superior efficiency, stability, and sustainability. These results highlight the potential of ZnPc-anchored mesoporous materials as practical photocatalysts for green oxidative transformations under mild conditions.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"470 ","pages":"Article 116640"},"PeriodicalIF":4.1,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144671032","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}
引用次数: 0
Understanding the effect of using metal oxide as photoanode modification on the selectivity of brine oxidation 了解金属氧化物作为光阳极改性对卤水氧化选择性的影响
IF 4.1 3区 化学
Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-07-16 DOI: 10.1016/j.jphotochem.2025.116618
Hitoshi Kusama, Kazuhiro Sayama
{"title":"Understanding the effect of using metal oxide as photoanode modification on the selectivity of brine oxidation","authors":"Hitoshi Kusama,&nbsp;Kazuhiro Sayama","doi":"10.1016/j.jphotochem.2025.116618","DOIUrl":"10.1016/j.jphotochem.2025.116618","url":null,"abstract":"<div><div>Recently, we considerably enhanced the Faraday efficiency (FE) for O<sub>2</sub> evolution (FE(O<sub>2</sub>)) (without Cl<sub>2</sub> production) through photoelectrochemical brine oxidation using the Mn-oxide-loaded BiVO<sub>4</sub>/WO<sub>3</sub>/FTO (FTO = F-doped SnO<sub>2</sub> conductive glass) photoanode under light irradiation (Sayama, et al. 2020). Herein, using density functional theory with small-cluster models of metal oxides, we elucidate the mechanism by which Mn oxide modification promotes oxygen evolution reaction (OER) while suppressing chlorine production reaction (CPR) compared to Fe, Ni, and Co oxides. OER involving two H<sub>2</sub>O molecules proceeds via four proton-coupled electron transfer (PCET) steps featuring peroxide intermediates, while CPR involving two HCl molecules proceeds via two PCET steps. Based on the free-energy change of the rate-limiting step (Δ<em>G</em><sub>RLS</sub>), i.e., the step requiring the highest energy, and difference in the Δ<em>G</em><sub>RLS</sub> values for OER and CPR (Δ<em>G</em><sub>RLS</sub>(OER) − Δ<em>G</em><sub>RLS</sub>(CPR)), OER efficiency relative to CPR increases with metal oxide modification in the order of Co &lt; Ni &lt; Fe &lt; Mn oxides. This trend is consistent with the observed decreasing order for FE(Cl<sub>2</sub>) and increasing order for FE(O<sub>2</sub>). Thus, our computational approach incorporating the small-cluster approximation can reproduce the experimental trends for OER and CPR when using some metal-oxide-modified photoanodes as well as anodes. This result verifies that Mn oxide functions as an electrocatalyst for O<sub>2</sub> evolution.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"470 ","pages":"Article 116618"},"PeriodicalIF":4.1,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144671029","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}
引用次数: 0
High quantum efficiency achieved in novel multifunctional far-red-emitting LaLi0.333Ti0.667O3: Mn4+ double perovskite phosphor 新型多功能远红发光lali0.333 ti0.6670 o3: Mn4+双钙钛矿荧光粉实现了高量子效率
IF 4.1 3区 化学
Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-07-15 DOI: 10.1016/j.jphotochem.2025.116632
Yue Zhong , Yang Li , Tao Su , Jing Xie , Xianze Li , Wenming Wang , Yan Pan , Xiantao Wei , Yong Li
{"title":"High quantum efficiency achieved in novel multifunctional far-red-emitting LaLi0.333Ti0.667O3: Mn4+ double perovskite phosphor","authors":"Yue Zhong ,&nbsp;Yang Li ,&nbsp;Tao Su ,&nbsp;Jing Xie ,&nbsp;Xianze Li ,&nbsp;Wenming Wang ,&nbsp;Yan Pan ,&nbsp;Xiantao Wei ,&nbsp;Yong Li","doi":"10.1016/j.jphotochem.2025.116632","DOIUrl":"10.1016/j.jphotochem.2025.116632","url":null,"abstract":"<div><div>The advancement of modern artificial plant cultivation necessitates the development of high-performance red-light sources precisely tailored to plant spectral absorption profiles. Such sources are crucial for improving crop yield and quality in contemporary agricultural practices. In this study, a far-red-emitting double perovskite phosphor LaLi<sub>0.333</sub>Ti<sub>0.667</sub>O<sub>3</sub>: Mn<sup>4+</sup> was successfully synthesized via a facile solid-state reaction method. Systematic investigations were conducted on the crystal structure, luminescent properties, and decay characteristics of the phosphor. Under 355 nm excitation, the optimized LaLi<sub>0.333</sub>Ti<sub>0.667</sub>O<sub>3</sub>: 0.3 mol% Mn<sup>4+</sup> phosphor demonstrates a prominent far-red emission peak at 726 nm, along with exceptional thermal stability, retaining 48.7 % of its room-temperature intensity at 420 K. Thermal quenching analysis yielded an activation energy (ΔE) of 0.388 eV. Remarkably, this phosphor achieves an ultrahigh internal quantum yield (QY) of 47 % within the 650–850 nm spectral range. The fabricated phosphor-converted light emitting diode (pc-LED) device exhibits precise spectral congruence with phytochrome far-red (P<sub>fr</sub>) absorption (730 nm), indicating significant potential for photomorphogenetic regulation in agricultural applications through supplementary lighting strategies. Furthermore, due to its superior tissue penetration capability, this phosphor also shows promise for applications in non-invasive medical diagnostics.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"470 ","pages":"Article 116632"},"PeriodicalIF":4.1,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144655853","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}
引用次数: 0
Enhanced photocatalytic degradation of LOMH by CNTs/COF composite under LED light irradiation LED光下cnt /COF复合材料对LOMH的光催化降解
IF 4.1 3区 化学
Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-07-15 DOI: 10.1016/j.jphotochem.2025.116633
Xueyi Xie , Wei Liu , Jin Zhang , Yuanting Deng
{"title":"Enhanced photocatalytic degradation of LOMH by CNTs/COF composite under LED light irradiation","authors":"Xueyi Xie ,&nbsp;Wei Liu ,&nbsp;Jin Zhang ,&nbsp;Yuanting Deng","doi":"10.1016/j.jphotochem.2025.116633","DOIUrl":"10.1016/j.jphotochem.2025.116633","url":null,"abstract":"<div><div>In this work, CNTs/COF composite photocatalyst was successfully synthesized and its structure, morphology, and optical properties were characterized. The photocatalytic performance of the CNTs/COF composite was evaluated by degrading lomefloxacin hydrochloride (LOMH) under LED illumination. The results revealed that incorporating CNTs significantly enhanced the light absorption capability, promoted the separation of photogenerated carriers, and improved photocatalytic efficiency. Through the synergistic action of persulfate (PS), a degradation efficiency of 75.29 % was achieved, with an apparent rate constant 6.53 times higher than that of pure COF. Furthermore, active species trapping experiments and electron spin resonance (ESR) analysis indicated that singlet oxygen (<sup>1</sup>O<sub>2</sub>) and superoxide radicals (•O<sub>2</sub><sup>−</sup>) were the dominant reactive species. Work function analysis further confirmed the efficient electron transfer between the COF and CNTs. This study proposes an energy-efficient strategy for removing antibiotic pollutants under low-energy LED light, demonstrating a promising application potential.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"470 ","pages":"Article 116633"},"PeriodicalIF":4.1,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663287","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}
引用次数: 0
Synthesis and applications of Eu3+, Na+-doped high-color-purity BaSrGa4O8 red phosphors for w-LEDs and the detection of latent fingerprints Eu3+, Na+掺杂高色纯BaSrGa4O8荧光体的合成与应用及潜在指纹检测
IF 4.1 3区 化学
Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-07-14 DOI: 10.1016/j.jphotochem.2025.116613
Siyu Cheng , Huixin Yu , Mengxue Zhang , Ruiqi Liu , Yu Zhang , Zhehui Xu , Tianen Guo , Mubiao Xie , Yuchen Yang , Ruijin Yu
{"title":"Synthesis and applications of Eu3+, Na+-doped high-color-purity BaSrGa4O8 red phosphors for w-LEDs and the detection of latent fingerprints","authors":"Siyu Cheng ,&nbsp;Huixin Yu ,&nbsp;Mengxue Zhang ,&nbsp;Ruiqi Liu ,&nbsp;Yu Zhang ,&nbsp;Zhehui Xu ,&nbsp;Tianen Guo ,&nbsp;Mubiao Xie ,&nbsp;Yuchen Yang ,&nbsp;Ruijin Yu","doi":"10.1016/j.jphotochem.2025.116613","DOIUrl":"10.1016/j.jphotochem.2025.116613","url":null,"abstract":"<div><div>This study successfully synthesized hexagonal BaSrGa<sub>4</sub>O<sub>8</sub> (BSGO):<em>x</em>Eu<sup>3+</sup>, <em>x</em>Na<sup>+</sup> phosphors (<em>x</em> = 0.5, 1, 2, 5, 10, 20, 30, and 40 mol%) via a high-temperature solid-state reaction method. The lattice environment, phase purity, element distribution, photoluminescence (PL) spectrum, thermal stability of luminescence, and color purity of BSGO:Eu<sup>3+</sup>, Na<sup>+</sup> were systematically investigated. Under 393 nm excitation, BSGO:<em>x</em>Eu<sup>3+</sup>, <em>x</em>Na<sup>+</sup> exhibited four emission peaks at 587, 611, 653, and 701 nm, corresponding to electron transitions from the <sup>5</sup>D<sub>0</sub> level to the <sup>7</sup>F<sub>1</sub>, <sup>7</sup>F<sub>2</sub>, <sup>7</sup>F<sub>3</sub>, and <sup>7</sup>F<sub>4</sub> levels. The sample exhibits a dominant emission peak centered at 611 nm. The optimal doping concentration is BSGO:10 mol%Eu<sup>3+</sup>, 10 mol%Na<sup>+</sup>, with an internal quantum efficiency (IQE) of 78.1 %. Theoretical calculations show color purity exceeding 99.4 % for all phosphors. The quenching mechanism is a quadrupole-quadrupole interaction. Additionally, the BSGO:10 mol%Eu<sup>3+</sup>, 10 mol%Na<sup>+</sup> was modified with oleylamine (OAM) to form BSGO:10 mol%Eu<sup>3+</sup>, 10 mol%Na<sup>+</sup>@OAM, improving fingerprint detection (levels I-III) with high contrast and resolution. Then, white light-emitting diode (w-LED) and orange-red LEDs were successfully prepared with 395 nm chips. The Commission International de L′ Eclairage (CIE) coordinates of the prepared w-LED are (0.352, 0.377), and it has a high color rendering index (CRI, <em>R</em><sub>a</sub>) of 95 and a low correlation color temperature (CCT) of 4841 K. Results demonstrate the potential for BSGO:Eu<sup>3+</sup>, Na<sup>+</sup> red phosphor in latent fingerprints (LFPs) and w-LEDs.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"470 ","pages":"Article 116613"},"PeriodicalIF":4.1,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144670969","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}
引用次数: 0
Boosting the photocatalytic performance for oxidative coupling of amines to imines by fabricating the Zn0.1Cd0.9S/In2O3 heterojunction 通过制备Zn0.1Cd0.9S/In2O3异质结提高胺与亚胺氧化偶联的光催化性能
IF 4.1 3区 化学
Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-07-12 DOI: 10.1016/j.jphotochem.2025.116615
Chengxin Du, Ailin Luo, Shipeng Ye, Qing Wang, Yu Song, Yafen Zhou, Limei Zhou
{"title":"Boosting the photocatalytic performance for oxidative coupling of amines to imines by fabricating the Zn0.1Cd0.9S/In2O3 heterojunction","authors":"Chengxin Du,&nbsp;Ailin Luo,&nbsp;Shipeng Ye,&nbsp;Qing Wang,&nbsp;Yu Song,&nbsp;Yafen Zhou,&nbsp;Limei Zhou","doi":"10.1016/j.jphotochem.2025.116615","DOIUrl":"10.1016/j.jphotochem.2025.116615","url":null,"abstract":"<div><div>A series of Zn<sub>0.1</sub>Cd<sub>0.9</sub>S/In<sub>2</sub>O<sub>3</sub> (ZCS/IO) direct <em>Z</em>-scheme heterojunction composites enriched with oxygen vacancies were prepared by a facile hydrothermal method. The obtained ZCS/IO composites exhibited a remarkable improved activity for the photocatalytic oxidation of benzylamine (BA) to N-benzylidene benzylamine (N-BDBA) under visible light illumination and ambient air as compared to pure Zn<sub>0.1</sub>Cd<sub>0.9</sub>S and In<sub>2</sub>O<sub>3</sub>. Especially, the ZCS/IO composite with a In<sub>2</sub>O<sub>3</sub> mass ratio of 10 %, denoted as ZCS/IO-10, showed the best photocatalytic performance, offering 99.6 % conversion of benzylamine with high selectivity (&gt;99.0 %) to N-BDBA within 1 h of irradiation. The significant improvement in photocatalytic activity was attributed to the construction of a direct <em>Z</em>-scheme heterojunction between Zn<sub>0.1</sub>Cd<sub>0.9</sub>S and In<sub>2</sub>O<sub>3</sub>, and the great increase in oxygen vacancies (OVs) concentration. As a result, the light absorption ability of the ZCS/IO composite was enhanced and the separation and migration of the photogenerated electrons and holes were accelerated, meanwhile the high redox ability of the composite was maintained, and thus resulting in the boosting of it's photocatalytic activity for amine oxidation. In addition, the high activity of ZCS/IO-10 composite was maintained during the four consecutive cycles, suggesting its good stability and reusability. Besides, the substituted benzylamines and heterocyclic amines can also be transformed to their corresponding imines phtocatalyzed by the ZCS/IO-10 composite, manifesting the good versatility of the composite catalyst</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"470 ","pages":"Article 116615"},"PeriodicalIF":4.1,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632973","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}
引用次数: 0
Achieving enhanced, tunable and broadened NIR-II emission in Ni2+ doped Li₂Mg₃TiO₆ via cationic substitution strategy 通过阳离子取代策略实现Ni2+掺杂Li₂Mg₃TiO₆中增强、可调和展宽的NIR-II发射
IF 4.1 3区 化学
Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-07-12 DOI: 10.1016/j.jphotochem.2025.116605
Xijie Liang , Yuting Chen , Tianzheng Ouyang , Fugen Wu , Qi Zhang , Yun Teng , Xiaozhu Xie , Huafeng Dong , Zhongfei Mu
{"title":"Achieving enhanced, tunable and broadened NIR-II emission in Ni2+ doped Li₂Mg₃TiO₆ via cationic substitution strategy","authors":"Xijie Liang ,&nbsp;Yuting Chen ,&nbsp;Tianzheng Ouyang ,&nbsp;Fugen Wu ,&nbsp;Qi Zhang ,&nbsp;Yun Teng ,&nbsp;Xiaozhu Xie ,&nbsp;Huafeng Dong ,&nbsp;Zhongfei Mu","doi":"10.1016/j.jphotochem.2025.116605","DOIUrl":"10.1016/j.jphotochem.2025.116605","url":null,"abstract":"<div><div>Near-infrared (NIR) light has been extensively utilized in biometric identification, food safety inspection, and biomedical imaging. To meet the spectral requirements for NIR detection, phosphors used in the current emerging phosphor-converted light-emitting diodes (Pc-LEDs) must exhibit broadband emission and high photoluminescence quantum yield (PLQY). Enhancing the luminescence efficiency and broadening emission bandwidth of existing NIR emitting phosphors, particularly in NIR-II spectral region (1000–1700 nm), have become critical and urgent research tasks. Inspired by the tunable crystal structure of Li<sub>2</sub>Mg<sub>3</sub>TiO<sub>6</sub> (LMT), we designed a series of Ni<sup>2+</sup> doped broadband NIR-II emitting phosphors, Li<sub>2</sub>Mg<sub>3</sub>Ti<sub>1-<em>x</em></sub>Sn<sub><em>x</em></sub>O<sub>6</sub>: 0.007Ni<sup>2+</sup> (<em>x</em> = 0–1.0), through Sn<sup>4+</sup> substitution for Ti<sup>4+</sup> in the LMT host, aiming to precisely modulate the crystal field environment around Ni<sup>2+</sup>. Experimental results demonstrate that the dominant emission peak red-shifts from 1355 to 1474 nm, while the FWHM broadens from 284.97 to 382.53 nm (Δ<sub>FWHM</sub> = 98 nm) with increasing Sn<sup>4+</sup> concentration. Concurrently, the PLQY is significantly improved from 17.3 % to 30.2 %. The phosphors exhibit superior performance in bio-penetrating imaging and spectral detection through cation substitution strategy of NIR emission band broadening and quantum efficiency enhancement. These results present important guiding significance for the development of efficient broadband NIR-II emitting phosphors used in rapidly developing NIR Pc-LEDs.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"470 ","pages":"Article 116605"},"PeriodicalIF":4.1,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144614591","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}
引用次数: 0
Hetero-metal MOF derivatives anchored on porous carbonized wood as photo-Fenton catalysts for ultrafast organic pollutant removal 锚定在多孔炭化木材上的杂金属MOF衍生物作为光fenton催化剂超快速去除有机污染物
IF 4.1 3区 化学
Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-07-12 DOI: 10.1016/j.jphotochem.2025.116616
Kaiqian Li , Xupeng Zhang , Jing Wang , Longxin Guo , Shuduan Deng , Tian Xie , Jialei Wang , Gang Zhu
{"title":"Hetero-metal MOF derivatives anchored on porous carbonized wood as photo-Fenton catalysts for ultrafast organic pollutant removal","authors":"Kaiqian Li ,&nbsp;Xupeng Zhang ,&nbsp;Jing Wang ,&nbsp;Longxin Guo ,&nbsp;Shuduan Deng ,&nbsp;Tian Xie ,&nbsp;Jialei Wang ,&nbsp;Gang Zhu","doi":"10.1016/j.jphotochem.2025.116616","DOIUrl":"10.1016/j.jphotochem.2025.116616","url":null,"abstract":"<div><div>Hetero-metal organic framework (HMOF) derivatives have emerged as promising photo-Fenton catalysts for removing hazardous organic pollutants from wastewater. However, most proposed catalysts suffer from low photocatalytic activity due to self-aggregation, structural instability, and limited active sites, which hinder their industrial feasibility. Herein, we report a highly efficient Cu–Fe/WPC catalyst (WPC denotes wood-converted porous carbon) featuring HMOF-derived Cu-Fe bimetallic nanoparticles embedded in the WPC skeleton. Under optimal conditions, the Cu-Fe/WPC/H<sub>2</sub>O<sub>2</sub>/UV system exhibits exceptional degradation performance for methylene blue (MB) and sulfamethoxazole (SMX), with rapid pseudo-first-order rate constants of 1.397 and 1.489 min<sup>−1</sup>, respectively. Notably, this hybrid photocatalyst achieves complete degradation of MB and SMX within 5 min. The synergistic catalysis between Fe and Cu dual active sites plays a crucial role in enhancing photo-Fenton activity. This synergy boosts the electron-transfer capacity during the valence-state evolution of copper and accelerates the Fe (III)/Fe (II) redox cycle in the Fenton reaction. Additionally, the conversion of Fe species in the Cu-Fe/WPC/H<sub>2</sub>O<sub>2</sub> system dominates H<sub>2</sub>O<sub>2</sub> activation, generating abundant hydroxyl radicals (·OH) that subsequently participate in the degradation of organic pollutants. This study presents innovative strategies for synthesizing wood-based porous carbon-supported HMOF derivative catalysts designed for ultra-fast photo-Fenton degradation of emerging organic pollutants.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"470 ","pages":"Article 116616"},"PeriodicalIF":4.1,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633104","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}
引用次数: 0
Corrigendum to “Fluorescent tetrazolylpyrene unnatural nucleoside in sensing BSA protein” [J. Photochem. Photobiol. A: Chem. 463 (2025) 116290] 荧光四硝基芘非天然核苷检测牛血清白蛋白[J]。Photochem。Photobiol。A:化学。463 (2025)116290]
IF 4.1 3区 化学
Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-07-11 DOI: 10.1016/j.jphotochem.2025.116599
Subhendu Sekhar Bag , Hiranya Gogoi , Sujata Roy , Manoj Kumar Pradhan , Sangita Talukdar
{"title":"Corrigendum to “Fluorescent tetrazolylpyrene unnatural nucleoside in sensing BSA protein” [J. Photochem. Photobiol. A: Chem. 463 (2025) 116290]","authors":"Subhendu Sekhar Bag ,&nbsp;Hiranya Gogoi ,&nbsp;Sujata Roy ,&nbsp;Manoj Kumar Pradhan ,&nbsp;Sangita Talukdar","doi":"10.1016/j.jphotochem.2025.116599","DOIUrl":"10.1016/j.jphotochem.2025.116599","url":null,"abstract":"","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"469 ","pages":"Article 116599"},"PeriodicalIF":4.1,"publicationDate":"2025-07-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144633393","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}
引用次数: 0
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