Journal of Photochemistry and Photobiology A-chemistry最新文献_第7页

Synergistic effects of heterointerface and surface O vacancies in S-scheme BiO2-x/QL-COF heterojunction for efficient charge transfer: mechanism exploration and DFT calculations S-scheme BiO2-x/QL-COF异质结中异质界面和表面O空位对有效电荷转移的协同效应：机理探索和DFT计算

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-09-05 DOI: 10.1016/j.jphotochem.2025.116715

Xi Wang , Zhaosheng Zhu , Qingrong Cheng , Zhiquan Pan

{"title":"Synergistic effects of heterointerface and surface O vacancies in S-scheme BiO2-x/QL-COF heterojunction for efficient charge transfer: mechanism exploration and DFT calculations","authors":"Xi Wang , Zhaosheng Zhu , Qingrong Cheng , Zhiquan Pan","doi":"10.1016/j.jphotochem.2025.116715","DOIUrl":"10.1016/j.jphotochem.2025.116715","url":null,"abstract":"<div><div>Covalent organic framework (COF) has great potential in the application of photocatalysis, but it still has the defect of easy recombination of photogenerated carriers. Herein, QL-COF was synthesized by carboxylation modification of LZU1 (Synthesis of the COF linked by 4-carboxyquinoline via the Doebner reaction (QL-COF).), and combined with BiO2-x with oxygen vacancy to construct a novel S-scheme heterojunction BiO2-x/QL-COF(BQ) by solvothermal method. Furthermore, its charge transfer mechanism has been demonstrated through Density Functional Theory (DFT) calculations. The photocatalytic performance of heterojunction BiO2-x/QL-COF was evaluated by pollutant degradation, hydrogen production and CO2 reduction. It was found the degradation rate of RhB over BQ-3 could reach almost 90 %. Moreover, the photocatalytic H2 evolution rate of BQ-3 was up to 438.7 μmol g−1 h−1, which is 7.6 times and 21 times that of QL-COF and BiO2-x, respectively. And the evolution rate of photoreduction CO2 to CO was 686.3 μmol g−1 h−1. The enhancement of its photocatalytic performance may be mainly attributed to: (i) The construction of heterojunction improves the absorption capacity of heterojunction BQ to visible light; (ii) Oxygen vacancies form defect centers to trap photogenerated charges, which inhibit photogenerated carriers recombination, and provide more active sites for CO2 adsorption; (iii) The electron-withdrawing effect of the carboxyl groups, which can effectively promote the migration of photogenerated carriers.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116715"},"PeriodicalIF":4.7,"publicationDate":"2025-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046879","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

Au@CuS@CuO2 nanoconstructs self-generate H2O2 and GSH-consuming enhanced CDT combined with PTT for cancer therapy Au@CuS@CuO2纳米构建自生成H2O2和gsh消耗增强CDT联合PTT用于癌症治疗

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-09-04 DOI: 10.1016/j.jphotochem.2025.116758

Bingbing Cai , Jian Liu , Qi Fang, Yuzhu Zhou, Sana Zahoor, Xiaohuan Guo, Changchun Wen

{"title":"Au@CuS@CuO2 nanoconstructs self-generate H2O2 and GSH-consuming enhanced CDT combined with PTT for cancer therapy","authors":"Bingbing Cai , Jian Liu , Qi Fang, Yuzhu Zhou, Sana Zahoor, Xiaohuan Guo, Changchun Wen","doi":"10.1016/j.jphotochem.2025.116758","DOIUrl":"10.1016/j.jphotochem.2025.116758","url":null,"abstract":"<div><div>Chemodynamic therapy (CDT) is a promising therapeutic approach. However, the removal of reactive oxygen species (ROS) by Glutathione (GSH) in tumor cells, insufficient H2O2 content and the limitations of single therapy have hindered its better development. Herein, we designed a therapeutic agent Au@CuS@CuO2 (ACC) that can deplete GSH and generate H2O2 at the same time, and has the synergistic therapeutic function of CDT and photothermal therapy (PTT), achieving the accurate and efficient treatment of breast cancer guided by photothermal imaging. Firstly, the CuO2 shell releases H2O2 and Cu2+ in the tumor microenvironment (TME), which not only increases the H2O2 content in tumor cells but also Cu2+ can deplete excessive GSH. Meanwhile, the generated Cu+ converts H2O2 into highly toxic hydroxyl radical (·OH) through a Fenton-like reaction, achieving efficient CDT. In addition, Au@CuS (AC) under the irradiation of 808 nm laser, not only photothermal imaging can be realized to guide tumor treatment, but also the temperature of the treatment area can be rapidly raised, thereby realize the synergistic therapeutic effect of PTT and CDT. Overall, we have successfully designed and prepared a novel nano-therapeutic agent, achieving significant tumor treatment effects through the synergistic action of CDT/PTT. This study also provides important insights and new ideas for the design and construction of CDT candidate materials with the capabilities of H2O2 supply and synergistic treatment systems.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116758"},"PeriodicalIF":4.7,"publicationDate":"2025-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145019273","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

Scalable synthesis of AgX (Cl, Br, I, PO4) nanophotocatalysts for efficient visible-light degradation of persistent antibiotics from aqueous environments 可扩展合成AgX （Cl, Br， I, PO4）纳米光催化剂用于水环境中持久性抗生素的高效可见光降解

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-09-03 DOI: 10.1016/j.jphotochem.2025.116748

Saparbek Tugelbay , Valeriya Volobuyeva , Abylay Abilkhan , Batukhan Tatykayev

{"title":"Scalable synthesis of AgX (Cl, Br, I, PO4) nanophotocatalysts for efficient visible-light degradation of persistent antibiotics from aqueous environments","authors":"Saparbek Tugelbay , Valeriya Volobuyeva , Abylay Abilkhan , Batukhan Tatykayev","doi":"10.1016/j.jphotochem.2025.116748","DOIUrl":"10.1016/j.jphotochem.2025.116748","url":null,"abstract":"<div><div>The environmental persistence of Nitrofuran antibiotics, particularly Nitrofurazone (C6H6N4O4) and Furagin (C10H8N4O5), poses a serious threat to aquatic ecosystems due to their bioactivity, chemical stability, and resistance to conventional treatment. In this study, silver-based photocatalysts (AgCl, AgBr, AgI, and Ag3PO4) were synthesized via a scalable mechanochemical route and systematically evaluated for the visible-light-driven degradation of Nitrofurazone (NFZ) and Furagin (FUR). All catalysts demonstrated activity under visible light, with Ag3PO4 and AgCl achieving the highest degradation efficiencies: up to ∼95 % removal of NFZ (rate constant k = 0.03468 min−1) and ∼ 99 % removal of FUR (k = 0.05891 min−1) within 90 min. In contrast, AgBr exhibited limited performance (e.g., 70 % NFZ and 40 % FUR remaining after 90 min). The enhanced photocatalytic activities of Ag3PO4 and AgCl were attributed to efficient visible-light absorption, favorable band structures, and dominant reactive oxygen species (h+ and •OH). Recyclability tests confirmed stability over five cycles with >70 % activity retention. This work demonstrates a green, solvent free synthesis of silver-based nanophotocatalysts and their quantitative performance metrics in degrading recalcitrant pharmaceutical pollutants, offering a promising approach for solar-driven water purification.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116748"},"PeriodicalIF":4.7,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145005076","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

Photo- and Al3+- responsive fluorescent polymeric nanoparticles for multilevel information encryption and anti-counterfeiting 用于多级信息加密和防伪的光和Al3+响应荧光聚合物纳米颗粒

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-09-03 DOI: 10.1016/j.jphotochem.2025.116747

Yong Tian , Shun He , Liqi Wu , Kairong Zang , Fuhua Huang , Hong Wang , Jian Chen

{"title":"Photo- and Al3+- responsive fluorescent polymeric nanoparticles for multilevel information encryption and anti-counterfeiting","authors":"Yong Tian , Shun He , Liqi Wu , Kairong Zang , Fuhua Huang , Hong Wang , Jian Chen","doi":"10.1016/j.jphotochem.2025.116747","DOIUrl":"10.1016/j.jphotochem.2025.116747","url":null,"abstract":"<div><div>Stimuli-responsive fluorescent polymeric nanoparticles have gained widespread interest in information encryption and anti-counterfeiting because of their features including easy preparation, high contrast, and good photostability. However, most of reported single-responsive nanoparticles exhibited the low security of information encryption and anti-counterfeiting, and limited their application. Therefore, we reported photo- and Al3+-responsive fluorescent polymeric nanoparticles (PAFPNs) through a simple one-pot miniemulsion polymerization. Based on fluorescence resonance energy transfer (FRET) mechanism, Al3+-responsive fluorescence groups ((E)-N′-(2-hydroxybenzylidene)-4-vinylbenzohydrazide (HBVBH)) and spiropyran-linked methacrylate (SPMA) were used to construct FRET systems. Initially, the nanoparticles showed no fluorescence. Upon the addition of Al3+ (100 μM), the PAFPNs revealed a strong blue fluorescence, due to the HBVBH can chelate with Al3+ to produce a blue fluorescence via a metal chelation-enhanced fluorescence mechanism (CHEF). Subsequently, UV can induce a photoisomerization process of SPMA from a non-fluorescent spiropyran (SP) state to a merocyanine (MC) form with red fluorescence, enabling a transition in fluorescence from blue to red. Finally, the PAFPNs can return to blue fluorescence via the irradiation of visible light. PAFPNs not only exhibited the three fluorescent states of no-blue-red, but also revealed high fluorescence contrast and outstanding photoreversibility. These results implied that PAFPNs have a great potential in developing multilevel information encryption, anti-counterfeiting, and multicolor security inks.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116747"},"PeriodicalIF":4.7,"publicationDate":"2025-09-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145005077","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

Insights into the enhancement mechanism of FeOOH/VO-BiVO4 photoanodes for water oxidation with intensity-modulated photocurrent spectroscopy FeOOH/VO-BiVO4光阳极对水氧化的增强机理研究

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-09-02 DOI: 10.1016/j.jphotochem.2025.116737

Manfang Mai , Lianke Ma , Yulan Zhou , Side Fu , Wenhao Deng , Xiaowen Wang , Xinzhou Ma

{"title":"Insights into the enhancement mechanism of FeOOH/VO-BiVO4 photoanodes for water oxidation with intensity-modulated photocurrent spectroscopy","authors":"Manfang Mai , Lianke Ma , Yulan Zhou , Side Fu , Wenhao Deng , Xiaowen Wang , Xinzhou Ma","doi":"10.1016/j.jphotochem.2025.116737","DOIUrl":"10.1016/j.jphotochem.2025.116737","url":null,"abstract":"<div><div>To overcome the rapid charge recombination and sluggish water oxidation kinetics, FeOOH/VO-BiVO4 photoanodes were rationally prepared. The highest photocurrent density of 3.5 mA cm−2 was generated by the FeOOH/VO-BiVO4 photoanodes at 1.23 VRHE, which was 3.5-fold higher than that of the pristine BiVO4. The dominate enhancement mechanism can be ascribed to significantly increased charge transfer efficiency by the FeOOH overlayers. Intensity-modulated photocurrent spectroscopy revealed that such increased charge transfer efficiency was resulted from the strong suppression of surface recombination by the FeOOH overlayers. Rate constant of surface recombination was strongly reduced to approximately 10−2 s−1 at 0.93–1.23 VRHE. The strongly suppressed surface recombination was attributed to the storage capacity of the FeOOH for the photogenerated holes. Meanwhile, oxygen vacancies just had a minor impact on the kinetics of charge transfer and surface recombination but slightly increased the charge separation efficiency in the bulk. This work clarifies the roles of oxygen vacancies and the FeOOH overlayers in the increased photocurrent density, facilitating the rational design of high-performance BiVO4-based photoanodes.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116737"},"PeriodicalIF":4.7,"publicationDate":"2025-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144996983","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

Evaluation of photon fluxes, external mass transfer and heterogeneous quantum yield in an Optofluidic threaded microreactor (OTM) 光流螺纹微反应器（OTM）中光子通量、外传质和非均质量子产率的评价

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-09-01 DOI: 10.1016/j.jphotochem.2025.116744

Amparo Fernández-Pérez, Gregorio Marbán

{"title":"Evaluation of photon fluxes, external mass transfer and heterogeneous quantum yield in an Optofluidic threaded microreactor (OTM)","authors":"Amparo Fernández-Pérez, Gregorio Marbán","doi":"10.1016/j.jphotochem.2025.116744","DOIUrl":"10.1016/j.jphotochem.2025.116744","url":null,"abstract":"<div><div>This study presents a comprehensive methodology to evaluate photon fluxes, external mass transfer, and heterogeneous quantum yield within a microchannel-type optofluidic microrreactor. It has been specifically applied to an optofluidic threaded microreactor (OTM), tested in the photodegradation of aqueous ibuprofen acid under UVA irradiation. The given approach facilitates the calculation of heterogeneous quantum yields, avoiding the need for specialized radiometers and relying instead on the spectral characterization of the reactor components. By employing flow-mode ferrioxalate actinometry, the photon flux within the OTM was accurately determined, simultaneously allowing evaluation of the average optical path length. The results highlight the high radiation utilization ratio in the OTM. The optical properties of the catalytic layer, composed of TiO2 nanoparticles and a primer, were characterized through the Kubelka-Munk theory and the Bouguer-Beer law, which allowed the estimation of the active shell thickness. The reaction rate equation, which included the effect of external mass transfer resistance through a modified Sherwood number correlation, could be analytically integrated to evaluate residence time, thus allowing the estimation of reaction orders and kinetic and equilibrium constants by error minimization. The OTM shows a relative photonic efficiency of 1.6 for the photodegradation of ibuprofen. This work provides a robust method for evaluating photocatalytic performance in microchannel-type reactors, offering insights into the effect of geometric and operational parameters on photon absorption, mass transfer, and quantum yield.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116744"},"PeriodicalIF":4.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144989535","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

Efficient visible-light-responsive novel P/BiOIO3/Co-TCPP Z-scheme heterojunction photocatalyst for oxytetracycline hydrochloride removal: synergistic effects of P doping and organic complexes 高效可见光响应新型P/BiOIO3/Co-TCPP Z-scheme异质结光催化剂：P掺杂与有机配合物的协同效应

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-09-01 DOI: 10.1016/j.jphotochem.2025.116746

Xinglin Li , Pengfei Zhu , Yu Chen , Maojie Zhang , Yunhui Jiang

{"title":"Efficient visible-light-responsive novel P/BiOIO3/Co-TCPP Z-scheme heterojunction photocatalyst for oxytetracycline hydrochloride removal: synergistic effects of P doping and organic complexes","authors":"Xinglin Li , Pengfei Zhu , Yu Chen , Maojie Zhang , Yunhui Jiang","doi":"10.1016/j.jphotochem.2025.116746","DOIUrl":"10.1016/j.jphotochem.2025.116746","url":null,"abstract":"<div><div>In this paper, Co2+ was successfully assembled into a complex by solvothermal method with meso-tetra (4-carboxyphenyl) porphyrin (TCPP), and then a novel P/BiOIO3/Co-TCPP inorganic-organic composite photocatalytic material was prepared by one-pot solvothermal method. It was found that after 60 min of reaction under visible light, the degradation rate of the preferred P/BiOIO3/Co-TCPP composite material for 20 mg/L oxytetracycline hydrochloride (OTC) reached 88.15 %, with its pseudo-first-order kinetic model fitting constant measured at 0.03852 min−1. It was 5.12 and 1.52 times that of BiOIO3 and P-doped BiOIO3 respectively, and there was no significant decrease in activity after three consecutive uses. Meanwhile, the noxiousness of the OTC solution after photocatalytic degradation by this catalyst was significantly reduced. The characterization results indicate that the primary factor contributing to the improved activity is the P/BiOIO3/Co-TCPP catalyst can be attributed to the doping of BiOIO3 by P and the coupling of Co-TCPP to BiOIO3, which significantly improves the catalyst's response ability to visible light. Meanwhile, P/BiOIO3 and Co-TCPP form a Z-scheme heterojunction, which greatly facilitates the separation of photogenerated carriers. Finally, the electron transfer mechanism and possible degradation pathways of the photocatalytic degradation of OTC by P/BiOIO3/Co-TCPP were proposed. This study provides a feasible and effective method for the modification of BiOIO3-based heterojunction photocatalysts and the treatment of antibiotics in water bodies.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116746"},"PeriodicalIF":4.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144989534","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 diclofenac under LED light using Co2SnO4/Co3O4/SnO2: Efficiency, mechanism, and by-product toxicity prediction Co2SnO4/Co3O4/SnO2增强LED光催化降解双氯芬酸的效率、机理及副产物毒性预测

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-08-30 DOI: 10.1016/j.jphotochem.2025.116742

Soumia Fergani , Salah Eddine Berrabah , Siham Lameche , Yasmina Masmoudi , Mounia Alaimia , Sihem Boubekeur , Adel Saadi , Amel Boudjemaa , Khaldoun Bachari , Hanane Zazoua

{"title":"Enhanced photocatalytic degradation of diclofenac under LED light using Co2SnO4/Co3O4/SnO2: Efficiency, mechanism, and by-product toxicity prediction","authors":"Soumia Fergani , Salah Eddine Berrabah , Siham Lameche , Yasmina Masmoudi , Mounia Alaimia , Sihem Boubekeur , Adel Saadi , Amel Boudjemaa , Khaldoun Bachari , Hanane Zazoua","doi":"10.1016/j.jphotochem.2025.116742","DOIUrl":"10.1016/j.jphotochem.2025.116742","url":null,"abstract":"<div><div>In this study, a Co2SnO4/Co3O4/SnO2 material synthesized via the hydrothermal method was investigated for the degradation of diclofenac (DCF) under LED light. Structural characterization confirmed the presence of spinel and oxide phases with Co2+, Co3+, and Sn4+ oxidation states. Electrochemical analyses indicated efficient charge separation and low interfacial resistance under illumination, highlighting strong photocatalytic potential. A degradation efficiency of 99.45 % and superior kinetic performance, with higher rate constants and shorter half-lives, were achieved via the photocatalytic process compared to 76.25 % in the photocatalytic-PMS system, likely due to the higher reactivity of OH• compared to SO5•- radicals. Scavenger tests revealed that hydroxyl radicals (OH•) were the main reactive species responsible for the degradation of DCF. Additionally, although DCF was completely degraded during the photocatalytic process, the mineralization rate was 39.11 %. Degradation products were identified using LC-ESI-MS, and their predicted toxicity was evaluated using the ECOSAR 2.2 software. A possible degradation pathway was proposed.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116742"},"PeriodicalIF":4.7,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145046883","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

A novel dinaphthodiaza-crown macrocycle-based luminescent chemosensor for selective and sensitive dual detection of CHCl3 and CCl4 in water 一种新型二氮二氮冠大环发光化学传感器，用于选择性和灵敏地双重检测水中的氯化物

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-08-30 DOI: 10.1016/j.jphotochem.2025.116731

Bahram Ghanbari , Maryam Moeinian , Barzin Safarkoopayeh , Jack K. Clegg

{"title":"A novel dinaphthodiaza-crown macrocycle-based luminescent chemosensor for selective and sensitive dual detection of CHCl3 and CCl4 in water","authors":"Bahram Ghanbari , Maryam Moeinian , Barzin Safarkoopayeh , Jack K. Clegg","doi":"10.1016/j.jphotochem.2025.116731","DOIUrl":"10.1016/j.jphotochem.2025.116731","url":null,"abstract":"<div><div>This study presents the design, synthesis, and characterization of a novel luminescent chemosensor based on a dinaphthodiaza-crown macrocycle (L) for the selective and sensitive dual detection of CHCl3 and CCl4 in water. L operates by monitoring fluorescence (FL) intensity changes at two distinct excitation wavelengths (293 and 370 nm), enabling simultaneous detection of CHCl3 (via FL enhancement) and CCl4 (via FL quenching). The detection limits for CHCl3 and CCl4 were calculated as 2.25 and 6.35 ppm, respectively, demonstrating high sensitivity compared to several conventional methods. Theoretical studies (DFT and TD-DFT) confirmed the interaction mechanisms, wherein CCl4 interacts with the naphthalene moiety via C−Cl···π interactions to form a ground-state complex, leading to the observed static FL quenching, and CHCl3 interaction with the carboxylate group via C−H···O hydrogen bonding, resulted in a 70 % increase in the FL intensity. Key advantages of this chemosensor include chemical stability, recyclability (with 90 % recovery after 4 cycles), and performance in aqueous environments, making it a promising tool for monitoring the chlorinated pollutants in water resources.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"472 ","pages":"Article 116731"},"PeriodicalIF":4.7,"publicationDate":"2025-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144934099","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

Constructing a heterojunction of Sr-doped g-C3N4 decorated with SrTiO3 for advanced piezo/photo catalytic degradation of TCH antibiotic 构建SrTiO3修饰的sr掺杂g-C3N4异质结用于先进的压电/光催化降解TCH抗生素

IF 4.7 3区化学

Journal of Photochemistry and Photobiology A-chemistry Pub Date : 2025-08-29 DOI: 10.1016/j.jphotochem.2025.116718

Saad H. Ammar , Mohammed D. Salman , Hanan H. Abed , Alaa J. Awadh

{"title":"Constructing a heterojunction of Sr-doped g-C3N4 decorated with SrTiO3 for advanced piezo/photo catalytic degradation of TCH antibiotic","authors":"Saad H. Ammar , Mohammed D. Salman , Hanan H. Abed , Alaa J. Awadh","doi":"10.1016/j.jphotochem.2025.116718","DOIUrl":"10.1016/j.jphotochem.2025.116718","url":null,"abstract":"<div><div>Piezo-assisted photocatalysis has developed as an integrated process for organic pollutants degradation by supporting the photocarriers separation through the piezoelectric polarization effect. Herein, we constructed SrTiO3-decorated Sr-doped g-C3N4 (SrTO/SrCN) heterojunction catalysts with different SrTO weight ratios (from 5 to 50 wt%) to obtain effective piezo/photo-catalysts for decomposition of tetracycline hydrochloride antibiotic (TCH) under visible light and ultrasonic circumstances. The band gap reduction of SrCN resulting from Sr doping, the fabrication of the Z-system heterojunction between SrTO and SrCN, which successfully reduces the charge recombination of photocarriers, and the piezoelectric polarization effects of SrTO contributed to the enhancement of the piezo/photo-catalytic TCH degradation. Noticeably, the degradation reached 98.3 in 50 min over 30 wt%-SrTO/SrCN heterojunction catalyst, which was higher than that of the pur SrTO, CN, and SrCN samples. Furthermore, The TOC removal of TCH reached 83.5 %, indicating outstanding mineralization performance of SrTO/SrCN sample. Through the trapping study, O2− and •OH species played a pivotal role in the TCH decomposition process, which supports the proposed mechanism in this work. Besides, excellent durability of SrTO/SrCN heterojunction piezo/photo-catalysts has been detected, in which 92.7 % TCH decomposition was still obtained after five recycled processes.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"471 ","pages":"Article 116718"},"PeriodicalIF":4.7,"publicationDate":"2025-08-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144922685","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