Pub Date : 2025-12-09DOI: 10.1016/j.jphotochem.2025.116964
Jing-Jing He , Qin-Yue Cao , Xin-Ru Zhou , Si-Ying Wei , Tian-Cheng Yin , Jia-Ren Yuan , Yan-Dong Guo , Xiao-Hong Yan
Driven by the requirements of low-power micro-material applications, generating pure spin currents via efficient thermal spin conversion mechanisms has become a focal area in spintronics research. Based on first-principles calculations within the Landauer-Büttiker theoretical framework, we investigated quantum transport properties in bilayer zigzag C₂N nanoribbons (bl-C₂NNRs) driven by Van der Waals (vdW) forces. The distinct electronic and transport responses of five bilayer stacking configurations stem from interlayer coupling-induced band structure modifications and vdW-mediated charge transfer governing band splitting. Notably, vdW interactions induce quantum transport channel multiplication at the Fermi level (), featuring near-symmetric transmission peaks that enable thermally driven oppositely polarized spin currents with monotonic enhancement, and achieve the ideal spin-dependent Seebeck effect (SDSE), resulting in exceptional thermoelectric conversion efficiency. In addition, the bilayer stacking leads to broadened infrared absorption and pronounced anisotropic optical responses. This work demonstrates that bilayer stacking effectively enhances both the spin thermoelectric performance and optical absorption characteristics of C₂N-based materials, offering valuable insights for the design of novel one-dimensional materials for spintronic and photonic applications.
{"title":"Van der Waals engineering for pure spin currents in C2N nanoribbons","authors":"Jing-Jing He , Qin-Yue Cao , Xin-Ru Zhou , Si-Ying Wei , Tian-Cheng Yin , Jia-Ren Yuan , Yan-Dong Guo , Xiao-Hong Yan","doi":"10.1016/j.jphotochem.2025.116964","DOIUrl":"10.1016/j.jphotochem.2025.116964","url":null,"abstract":"<div><div>Driven by the requirements of low-power micro-material applications, generating pure spin currents via efficient thermal spin conversion mechanisms has become a focal area in spintronics research. Based on first-principles calculations within the Landauer-Büttiker theoretical framework, we investigated quantum transport properties in bilayer zigzag C₂N nanoribbons (bl-C₂NNRs) driven by Van der Waals (vdW) forces. The distinct electronic and transport responses of five bilayer stacking configurations stem from interlayer coupling-induced band structure modifications and vdW-mediated charge transfer governing band splitting. Notably, vdW interactions induce quantum transport channel multiplication at the Fermi level (<span><math><msub><mi>E</mi><mi>F</mi></msub></math></span>), featuring near-symmetric transmission peaks that enable thermally driven oppositely polarized spin currents with monotonic enhancement, and achieve the ideal spin-dependent Seebeck effect (SDSE), resulting in exceptional thermoelectric conversion efficiency. In addition, the bilayer stacking leads to broadened infrared absorption and pronounced anisotropic optical responses. This work demonstrates that bilayer stacking effectively enhances both the spin thermoelectric performance and optical absorption characteristics of C₂N-based materials, offering valuable insights for the design of novel one-dimensional materials for spintronic and photonic applications.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"474 ","pages":"Article 116964"},"PeriodicalIF":4.7,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145747409","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}
Pub Date : 2025-12-09DOI: 10.1016/j.jphotochem.2025.116975
Ping Mao , Bowen Zeng , Xin Yang , Fafa Wang , Wenchang Yang , Zi Chen , Jing Zhang , Jinyou Shen , Aiwu Sun
Developing an efficient and stable photocatalytic system for treating refractory organic pollutants remains a major challenge. In this study, a Schottky junction composite (CSMX-X), composed of hollow cubic Cu2-xS and Ti3C2 MXene, was successfully synthesized via a template method for efficient removal of aqueous pollutants. The negatively charged surface of Ti3C2 promotes the uniform dispersion of Cu2-xS, and the close interface contact between Cu2-xS and Ti₃C₂ facilitates the efficient transfer of electrons from Cu2-xS to Ti3C2, significantly improving the separation efficiency of photogenerated carriers and extending their lifetime. Among the series, CSMX-20 demonstrated the highest charge separation efficiency and the lowest charge transfer resistance. Under visible light and peroxymonosulfate (PMS) synergy, CSMX-20 achieved 80 % degradation of 300 mg/L 2,4,6-trichlorophenol (TCP) within 2 min, and 99 % removal for 20 mg/L TCP, outperforming most reported catalysts. Optimal performance occurred under neutral pH conditions, and the catalyst maintained high stability over five consecutive cycles without significant activity loss. Mechanistic studies revealed that holes (h+) are the main active substance, while sulfate (SO4−•) and hydroxyl (•OH) radicals generated through PMS synergy also contribute to the degradation process. LC-MS analysis and DFT calculations clarified the degradation pathway of TCP, confirming the effective dechlorination, ring opening, and final conversion to carbon dioxide and water. Additionally, CSMX-20 exhibited notable removal capabilities for tetracycline (TC) and Cr(VI). This study provides a promising strategy for designing high-performance photocatalytic systems for complex wastewater treatment.
{"title":"2D Ti3C2 supported hollow Cu2-xS Schottky photocatalyst for sustainable purification of multiple pollutants","authors":"Ping Mao , Bowen Zeng , Xin Yang , Fafa Wang , Wenchang Yang , Zi Chen , Jing Zhang , Jinyou Shen , Aiwu Sun","doi":"10.1016/j.jphotochem.2025.116975","DOIUrl":"10.1016/j.jphotochem.2025.116975","url":null,"abstract":"<div><div>Developing an efficient and stable photocatalytic system for treating refractory organic pollutants remains a major challenge. In this study, a Schottky junction composite (CSMX-<em>X</em>), composed of hollow cubic Cu<sub>2-<em>x</em></sub>S and Ti<sub>3</sub>C<sub>2</sub> MXene, was successfully synthesized via a template method for efficient removal of aqueous pollutants. The negatively charged surface of Ti<sub>3</sub>C<sub>2</sub> promotes the uniform dispersion of Cu<sub>2-<em>x</em></sub>S, and the close interface contact between Cu<sub>2-<em>x</em></sub>S and Ti₃C₂ facilitates the efficient transfer of electrons from Cu<sub>2-<em>x</em></sub>S to Ti<sub>3</sub>C<sub>2</sub>, significantly improving the separation efficiency of photogenerated carriers and extending their lifetime. Among the series, CSMX-20 demonstrated the highest charge separation efficiency and the lowest charge transfer resistance. Under visible light and peroxymonosulfate (PMS) synergy, CSMX-20 achieved 80 % degradation of 300 mg/L 2,4,6-trichlorophenol (TCP) within 2 min, and 99 % removal for 20 mg/L TCP, outperforming most reported catalysts. Optimal performance occurred under neutral pH conditions, and the catalyst maintained high stability over five consecutive cycles without significant activity loss. Mechanistic studies revealed that holes (h<sup>+</sup>) are the main active substance, while sulfate (SO<sub>4</sub><sup>−</sup>•) and hydroxyl (•OH) radicals generated through PMS synergy also contribute to the degradation process. LC-MS analysis and DFT calculations clarified the degradation pathway of TCP, confirming the effective dechlorination, ring opening, and final conversion to carbon dioxide and water. Additionally, CSMX-20 exhibited notable removal capabilities for tetracycline (TC) and Cr(VI). This study provides a promising strategy for designing high-performance photocatalytic systems for complex wastewater treatment.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"474 ","pages":"Article 116975"},"PeriodicalIF":4.7,"publicationDate":"2025-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145747533","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}
Due to its high mobility, biological toxicity, and radioactivity, U(VI) poses a serious threat to ecosystems and human health. To enhance the efficient removal of U(VI) under air atmosphere conditions without sacrificial agents, this work successfully synthesized a highly effective photocatalyst based on COFs featuring symmetric methyl structural units. This was achieved using relatively inexpensive materials as raw materials and leveraging the Schiff base reaction. The dosage of COFs at 0.2 g/L has been shown to achieve a removal efficiency of up to 98 % for 100 mg/L of U(VI). Following 5 cycles, the material maintains a percentage above 90 %, and the COFs exhibit a high degree of selectivity within high-salinity environments. The presence of a symmetric methyl group optimizes the electronic structure, enhances photoinduced charge separation, and improves redox activity. Additionally, it facilitates the generation of H2O2, which reacts in situ with U(VI) to form the insoluble compound (UO2) O2·2H2O. This work presents an innovative method for the cost-effective preparation of efficient non-metallic photocatalysts.
{"title":"Creation of symmetric methyl-functionalized COF for highly efficient U(VI)removal from water","authors":"Rui Xu , Huiping Shao , Baoyu Li, Yufeng Zheng, Bing Wang, Juan Zhang, Hongquan Fu, Hejun Gao, Yunwen Liao","doi":"10.1016/j.jphotochem.2025.116976","DOIUrl":"10.1016/j.jphotochem.2025.116976","url":null,"abstract":"<div><div>Due to its high mobility, biological toxicity, and radioactivity, U(VI) poses a serious threat to ecosystems and human health. To enhance the efficient removal of U(VI) under air atmosphere conditions without sacrificial agents, this work successfully synthesized a highly effective photocatalyst based on COFs featuring symmetric methyl structural units. This was achieved using relatively inexpensive materials as raw materials and leveraging the Schiff base reaction. The dosage of COFs at 0.2 g/L has been shown to achieve a removal efficiency of up to 98 % for 100 mg/L of U(VI). Following 5 cycles, the material maintains a percentage above 90 %, and the COFs exhibit a high degree of selectivity within high-salinity environments. The presence of a symmetric methyl group optimizes the electronic structure, enhances photoinduced charge separation, and improves redox activity. Additionally, it facilitates the generation of H<sub>2</sub>O<sub>2</sub>, which reacts in situ with U(VI) to form the insoluble compound (UO<sub>2</sub>) O<sub>2</sub>·2H<sub>2</sub>O. This work presents an innovative method for the cost-effective preparation of efficient non-metallic photocatalysts.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"474 ","pages":"Article 116976"},"PeriodicalIF":4.7,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145747536","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}
Colorimetric probes have gained considerable attention for detecting hazardous analytes in environmental and biological systems. Herein, we present an excited state intramolecular proton transfer (ESIPT)-based anthracene imidazole probe (AANQ) for selective and highly sensitive detection of cobalt (Co2+) contamination, a critical environmental pollutant. AANQ, synthesized in a single step reaction using 1,2-diaminoanthraquinone and 9-anthracene carboxaldehyde, exhibited a distinct colorimetric response, enabling rapid, cost-effective, and real-time detection without complex instrumentation. Upon interaction with Co2+, AANQ exhibits a distinct colour change from colorless to yellow, which can be easily observed by the naked eye without the need for sophisticated instrumentation. The limit of detection and the binding constant of AANQ towards Co2+ ions was determined to be 0.11 μM, and 3.1 × 103 M−1, respectively. The binding ratio of AANQ with Co2+ was found to be 2:1 through Job's plot analysis. Structural characterization using FT-IR spectroscopy and DFT calculations further validates AANQ's strong cobalt affinity. Furthermore, a test strip based on AANQ was coated, demonstrating excellent sensitivity and selectivity towards Co2+ ions, allowing for on-site, and real-time detection. AANQ demonstrates practical applicability by detecting cobalt in water, food, soil, and paint samples, making it a promising tool for field monitoring and household surveillance of cobalt contamination.
{"title":"Excited state intramolecular proton transfer based anthracene imidazole probe for the colorimetric detection of cobalt in real samples","authors":"Raja Udhayakumar , Ramakrishnan AbhijnaKrishna , Rajesh Kumar , Sivan Velmathi","doi":"10.1016/j.jphotochem.2025.116959","DOIUrl":"10.1016/j.jphotochem.2025.116959","url":null,"abstract":"<div><div>Colorimetric probes have gained considerable attention for detecting hazardous analytes in environmental and biological systems. Herein, we present an excited state intramolecular proton transfer <strong>(</strong>ESIPT)-based anthracene imidazole probe (AANQ) for selective and highly sensitive detection of cobalt (Co<sup>2+</sup>) contamination, a critical environmental pollutant. AANQ, synthesized in a single step reaction using 1,2-diaminoanthraquinone and 9-anthracene carboxaldehyde, exhibited a distinct colorimetric response, enabling rapid, cost-effective, and real-time detection without complex instrumentation. Upon interaction with Co<sup>2+</sup>, AANQ exhibits a distinct colour change from colorless to yellow, which can be easily observed by the naked eye without the need for sophisticated instrumentation. The limit of detection and the binding constant of AANQ towards Co<sup>2+</sup> ions was determined to be 0.11 μM, and 3.1 × 10<sup>3</sup> M<sup>−1</sup>, respectively. The binding ratio of AANQ with Co<sup>2+</sup> was found to be 2:1 through Job's plot analysis. Structural characterization using FT-IR spectroscopy and DFT calculations further validates AANQ's strong cobalt affinity. Furthermore, a test strip based on AANQ was coated, demonstrating excellent sensitivity and selectivity towards Co<sup>2+</sup> ions, allowing for on-site, and real-time detection. AANQ demonstrates practical applicability by detecting cobalt in water, food, soil, and paint samples, making it a promising tool for field monitoring and household surveillance of cobalt contamination.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"474 ","pages":"Article 116959"},"PeriodicalIF":4.7,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145747410","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}
Pub Date : 2025-12-08DOI: 10.1016/j.jphotochem.2025.116977
Zhuo Wang, Yihao Zhang, Wenjie Xing, Shen Zhang
In terms of the possible threats for our health, establishing efficacious strategies to determine Cr(VI) in drinking water is of significance. In this work, the fluorescence sensing of Cr(VI) was swimmingly performed based on blue-emitting carbon quantum dots (B-CQDs), which were developed using navel orange peel and N-acetyl-L-cysteine. The maximum emission wavelength was located at 433 nm when the excitation wavelength was 353 nm. After introducing Cr(VI), fluorescence quenching phenomenon was prominently displayed. Based on static quenching mechanism, a selective and sensitive fluorescence detection platform was successfully established. The wider linear range of 0–60 μM and detection limit of 0.084 μM was superior or equal to other methods. Moreover, the practical applications in real water obtained satisfactory recoveries. Taking into account the above analysis, this B-CQDs was very promising for Cr(VI) determination.
{"title":"Blue-emitting carbon quantum dots-based fluorescence platform for selective and sensitive determination of Cr(VI) in drinking water","authors":"Zhuo Wang, Yihao Zhang, Wenjie Xing, Shen Zhang","doi":"10.1016/j.jphotochem.2025.116977","DOIUrl":"10.1016/j.jphotochem.2025.116977","url":null,"abstract":"<div><div>In terms of the possible threats for our health, establishing efficacious strategies to determine Cr(VI) in drinking water is of significance. In this work, the fluorescence sensing of Cr(VI) was swimmingly performed based on blue-emitting carbon quantum dots (B-CQDs), which were developed using navel orange peel and <em>N</em>-acetyl-L-cysteine. The maximum emission wavelength was located at 433 nm when the excitation wavelength was 353 nm. After introducing Cr(VI), fluorescence quenching phenomenon was prominently displayed. Based on static quenching mechanism, a selective and sensitive fluorescence detection platform was successfully established. The wider linear range of 0–60 μM and detection limit of 0.084 μM was superior or equal to other methods. Moreover, the practical applications in real water obtained satisfactory recoveries. Taking into account the above analysis, this B-CQDs was very promising for Cr(VI) determination.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"474 ","pages":"Article 116977"},"PeriodicalIF":4.7,"publicationDate":"2025-12-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145747412","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}
Pub Date : 2025-12-06DOI: 10.1016/j.jphotochem.2025.116967
Jianping Li , Kun Zhang , Yunpeng Zhao , Hanyue Zhang , Haiyi Yang , Qingyao Wang , Junwei Hou
This study reported the preparation and photoelectrocatalytic performance of ternary Ag2S/SnS2/TiO2 NTs photoelectrodes, and the synergetic sensitization of Ag2S/SnS2 played a vital role in enhancing photocatalytic pollutant removal, H2 evolution and electric energy generation. The results indicated that the Ag2S/SnS2/TiO2 NTs achieved the 87.51 % removal of RhB, 100 % removal of MB, 81.14 % reduction of Cr(VI). The Ag2S/SnS2/TiO2 NTs photoelectrode also produced the visible light photocurrent of 95.11 μA/cm2 and photovoltage of −0.31 V, and achieved a quantum efficiency of 3.37 % for photoelectrocatalytic H2 evolution. The outstanding photoelectrochemical property of Ag2S/SnS2/TiO2 NTs photoelectrodes was mainly ascribed to the strong visible light response and photoelectron separation. This study would open the new thinking for novel photocatalysts in the applications of green energy resource development and environmental remediation.
{"title":"Synergetic effect of Ag2S and SnS2 on TiO2 nanotube arrays for the enhanced photoelectrocatalytic performance","authors":"Jianping Li , Kun Zhang , Yunpeng Zhao , Hanyue Zhang , Haiyi Yang , Qingyao Wang , Junwei Hou","doi":"10.1016/j.jphotochem.2025.116967","DOIUrl":"10.1016/j.jphotochem.2025.116967","url":null,"abstract":"<div><div>This study reported the preparation and photoelectrocatalytic performance of ternary Ag<sub>2</sub>S/SnS<sub>2</sub>/TiO<sub>2</sub> NTs photoelectrodes, and the synergetic sensitization of Ag<sub>2</sub>S/SnS<sub>2</sub> played a vital role in enhancing photocatalytic pollutant removal, H<sub>2</sub> evolution and electric energy generation. The results indicated that the Ag<sub>2</sub>S/SnS<sub>2</sub>/TiO<sub>2</sub> NTs achieved the 87.51 % removal of RhB, 100 % removal of MB, 81.14 % reduction of Cr(VI). The Ag<sub>2</sub>S/SnS<sub>2</sub>/TiO<sub>2</sub> NTs photoelectrode also produced the visible light photocurrent of 95.11 μA/cm<sup>2</sup> and photovoltage of −0.31 V, and achieved a quantum efficiency of 3.37 % for photoelectrocatalytic H<sub>2</sub> evolution. The outstanding photoelectrochemical property of Ag<sub>2</sub>S/SnS<sub>2</sub>/TiO<sub>2</sub> NTs photoelectrodes was mainly ascribed to the strong visible light response and photoelectron separation. This study would open the new thinking for novel photocatalysts in the applications of green energy resource development and environmental remediation.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"474 ","pages":"Article 116967"},"PeriodicalIF":4.7,"publicationDate":"2025-12-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145747411","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}
Pub Date : 2025-12-05DOI: 10.1016/j.jphotochem.2025.116974
Leyun Huang, Yoshinobu Nishimura
The excited-state intermolecular proton transfer (ESPT) reaction, wherein a complex in the ground state is subjected to intermolecular proton transfer to form a tautomer species in the excited state, is expected to be influenced by compounds with hydroxyl groups. A previous study added cyclodextrins, saccharides, and ethanol to an ESPT system using pyrene–urea derivatives and discussed their various suppressive effects on the ESPT reaction. This study proposes two methods to analyze the kinetics of the ESPT reaction in the presence of different groups of hydroxyl compounds that exhibit either negligible or significant suppressive effects. The differences in the rate constants between these groups indicate distinct interactions between the hydroxyl compounds and complexes. These findings are expected to facilitate the development of fluorescence sensors sensitive to specific hydroxyl compounds.
{"title":"Kinetic analysis of the excited-state intermolecular proton transfer reactions affected by hydroxyl compounds","authors":"Leyun Huang, Yoshinobu Nishimura","doi":"10.1016/j.jphotochem.2025.116974","DOIUrl":"10.1016/j.jphotochem.2025.116974","url":null,"abstract":"<div><div>The excited-state intermolecular proton transfer (ESPT) reaction, wherein a complex in the ground state is subjected to intermolecular proton transfer to form a tautomer species in the excited state, is expected to be influenced by compounds with hydroxyl groups. A previous study added cyclodextrins, saccharides, and ethanol to an ESPT system using pyrene–urea derivatives and discussed their various suppressive effects on the ESPT reaction. This study proposes two methods to analyze the kinetics of the ESPT reaction in the presence of different groups of hydroxyl compounds that exhibit either negligible or significant suppressive effects. The differences in the rate constants between these groups indicate distinct interactions between the hydroxyl compounds and complexes. These findings are expected to facilitate the development of fluorescence sensors sensitive to specific hydroxyl compounds.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"474 ","pages":"Article 116974"},"PeriodicalIF":4.7,"publicationDate":"2025-12-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145747543","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}
Pub Date : 2025-12-03DOI: 10.1016/j.jphotochem.2025.116970
Jinxin Bian , Shengyang Meng , Long Li , Lu Chen , Jiayi Shen , Ninghao Zheng , Xiaoxun Wu , Fan Wu
Perovskite photovoltaics show spontaneous performance evolution under illumination, whereas the covalent semiconductor Sb₂Se₃ is essentially unaffected. This striking contrast has long lacked a unified explanation across timescales. Here we assemble a multidimensional diagnostics suite comprising steady-state and transient surface photovoltage (SPV), in-situ Kelvin probe force microscopy (KPFM), and intensity-modulated photocurrent spectroscopy (IMPS) to track, within the same fabrication batch, the surface photoresponse of MAPbI3 and Sb2Se3 films under UV to visible excitation with systematically varied wavelength and irradiance. The experiments deconstruct light soaking in MAPbI3 into a continuous evidence chain that spans nanoseconds to minutes and extends from the bulk to the interface, while the near-zero response of Sb₂Se₃ rules out photothermal and purely electronic artifacts. Together they establish a quantitative and comparable mechanistic picture in which light soaking arises from the concerted reconfiguration of trap charging and discharging together with lattice rearrangement. By focusing on the coevolution of initial electron–hole separation, trap dynamics, and lattice-tunable defects from nanoseconds to minutes, we clarify how illumination-driven electrostatic reconstruction governs interfacial extraction rates and device stability. Leveraging the intrinsic contrast between the soft-lattice perovskite and the rigid-lattice Sb2Se3, we propose a practical diagnostic paradigm for early materials screening: in-situ steady-state SPV can rapidly flag light-soaking risk without fabricating full devices or performing time-consuming J–V or maximum power-point aging tests. This approach offers broadly applicable guidance for interface passivation, defect management, and long-term reliability design.
{"title":"Deciphering of light-soaking behavior in perovskite: Electro-optic analysis of intrinsic MAPbI3 versus Sb2Se3","authors":"Jinxin Bian , Shengyang Meng , Long Li , Lu Chen , Jiayi Shen , Ninghao Zheng , Xiaoxun Wu , Fan Wu","doi":"10.1016/j.jphotochem.2025.116970","DOIUrl":"10.1016/j.jphotochem.2025.116970","url":null,"abstract":"<div><div>Perovskite photovoltaics show spontaneous performance evolution under illumination, whereas the covalent semiconductor Sb₂Se₃ is essentially unaffected. This striking contrast has long lacked a unified explanation across timescales. Here we assemble a multidimensional diagnostics suite comprising steady-state and transient surface photovoltage (SPV), in-situ Kelvin probe force microscopy (KPFM), and intensity-modulated photocurrent spectroscopy (IMPS) to track, within the same fabrication batch, the surface photoresponse of MAPbI<sub>3</sub> and Sb<sub>2</sub>Se<sub>3</sub> films under UV to visible excitation with systematically varied wavelength and irradiance. The experiments deconstruct light soaking in MAPbI<sub>3</sub> into a continuous evidence chain that spans nanoseconds to minutes and extends from the bulk to the interface, while the near-zero response of Sb₂Se₃ rules out photothermal and purely electronic artifacts. Together they establish a quantitative and comparable mechanistic picture in which light soaking arises from the concerted reconfiguration of trap charging and discharging together with lattice rearrangement. By focusing on the coevolution of initial electron–hole separation, trap dynamics, and lattice-tunable defects from nanoseconds to minutes, we clarify how illumination-driven electrostatic reconstruction governs interfacial extraction rates and device stability. Leveraging the intrinsic contrast between the soft-lattice perovskite and the rigid-lattice Sb<sub>2</sub>Se<sub>3</sub>, we propose a practical diagnostic paradigm for early materials screening: in-situ steady-state SPV can rapidly flag light-soaking risk without fabricating full devices or performing time-consuming J–V or maximum power-point aging tests. This approach offers broadly applicable guidance for interface passivation, defect management, and long-term reliability design.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"474 ","pages":"Article 116970"},"PeriodicalIF":4.7,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145747534","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}
Pub Date : 2025-12-03DOI: 10.1016/j.jphotochem.2025.116973
Jingbiao Ge , Huihui Xue , Yang Yang , Sujuan Zhang , Xiuzhen Zheng , Shifu Chen
To optimize the performance of photocatalytic H2 production, various effective strategies have been developed by designing highly efficient photocatalysts, including morphology control, synergistic reaction design, and utilization of photogenerated charge carriers (PCCs). In this study, a highly efficient Bi-Bi2WO6/Zn0.5Cd0.5S (BBWO/ZCS) composite was synthesized by embedding Zn0.5Cd0.5S (ZCS) nanospheres into Bi-Bi2WO6 (BBWO) microplates through electrostatic self-assembly method. Although BBWO showed poor activity in H2 generation, it largely improved the performance of ZCS under visible light illumination. When the mass of BBWO was 3% in the composite, BBWO/ZCS exhibited the highest H2 production rate (28.0 mmol g−1 h−1), much higher than that of pure ZCS. Meanwhile, its apparent quantum efficiency (AQE) was high to 8.45% at 400 nm. The design of the BBWO/ZCS composite not only improves the migration and utilization efficiency of PCCs, but also offers valuable theoretical insights and experimental references for the development of highly efficient photocatalysts.
{"title":"Embedding Zn0.5Cd0.5S nanospheres into the interval of Bi-Bi2WO6 microplates by electrostatic attraction for photocatalytic H2 production","authors":"Jingbiao Ge , Huihui Xue , Yang Yang , Sujuan Zhang , Xiuzhen Zheng , Shifu Chen","doi":"10.1016/j.jphotochem.2025.116973","DOIUrl":"10.1016/j.jphotochem.2025.116973","url":null,"abstract":"<div><div>To optimize the performance of photocatalytic H<sub>2</sub> production, various effective strategies have been developed by designing highly efficient photocatalysts, including morphology control, synergistic reaction design, and utilization of photogenerated charge carriers (PCCs). In this study, a highly efficient Bi-Bi<sub>2</sub>WO<sub>6</sub>/Zn<sub>0.5</sub>Cd<sub>0.5</sub>S (BBWO/ZCS) composite was synthesized by embedding Zn<sub>0.5</sub>Cd<sub>0.5</sub>S (ZCS) nanospheres into Bi-Bi<sub>2</sub>WO<sub>6</sub> (BBWO) microplates through electrostatic self-assembly method. Although BBWO showed poor activity in H<sub>2</sub> generation, it largely improved the performance of ZCS under visible light illumination. When the mass of BBWO was 3% in the composite, BBWO/ZCS exhibited the highest H<sub>2</sub> production rate (28.0 mmol g<sup>−1</sup> h<sup>−1</sup>), much higher than that of pure ZCS. Meanwhile, its apparent quantum efficiency (AQE) was high to 8.45% at 400 nm. The design of the BBWO/ZCS composite not only improves the migration and utilization efficiency of PCCs, but also offers valuable theoretical insights and experimental references for the development of highly efficient photocatalysts.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"474 ","pages":"Article 116973"},"PeriodicalIF":4.7,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145747535","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}
Enhancing perovskite quality and modifying perovskite interface play a key role in promoting the performance of inorganic perovskite solar cells. Although varieties of strategies have been developed to enhance perovskite quality and modify perovskite interface, the synchronous perovskite quality improvement and dual-interface modification still faces huge challenge. Herein, we develop a facile but effective ionic liquid-assisted perovskite crystallization regulation and in situ dual-interface modification strategy wherein an ionic liquid, 1-ethyl-3-methylimidazolium trifluoroacetate (EMIMTA), is added to CsPbIBr2 precursor as an additive. The interaction of EMIMTA with CsPbIBr2 precursor regulates the perovskite crystallization, leading to obtaining high-quality CsPbIBr2 perovskite film with reduced defects. Meanwhile, EMIMTA molecules are excluded from CsPbIBr2 perovskite crystal during perovskite crystallization process and accumulate at both the top and bottom surfaces of perovskite film, leading to in situ dual-interface modification and thereby reducing the interface charge recombination. The resulting planar CsPbIBr2 perovskite solar cell with the carbon back electrode demonstrates a power conversion efficiency of 11.03 % with remarkably enhanced ambient stability.
{"title":"Ionic liquid-assisted perovskite crystallization regulation and dual-interface modification for enhancing the performance of inorganic perovskite solar cells","authors":"Hanqing Liu, Chunshu Song, Jiayu Bi, Dongsheng Wang, Fanning Meng, Guiqiang Wang","doi":"10.1016/j.jphotochem.2025.116971","DOIUrl":"10.1016/j.jphotochem.2025.116971","url":null,"abstract":"<div><div>Enhancing perovskite quality and modifying perovskite interface play a key role in promoting the performance of inorganic perovskite solar cells. Although varieties of strategies have been developed to enhance perovskite quality and modify perovskite interface, the synchronous perovskite quality improvement and dual-interface modification still faces huge challenge. Herein, we develop a facile but effective ionic liquid-assisted perovskite crystallization regulation and in situ dual-interface modification strategy wherein an ionic liquid, 1-ethyl-3-methylimidazolium trifluoroacetate (EMIMTA), is added to CsPbIBr<sub>2</sub> precursor as an additive. The interaction of EMIMTA with CsPbIBr<sub>2</sub> precursor regulates the perovskite crystallization, leading to obtaining high-quality CsPbIBr<sub>2</sub> perovskite film with reduced defects. Meanwhile, EMIMTA molecules are excluded from CsPbIBr<sub>2</sub> perovskite crystal during perovskite crystallization process and accumulate at both the top and bottom surfaces of perovskite film, leading to in situ dual-interface modification and thereby reducing the interface charge recombination. The resulting planar CsPbIBr<sub>2</sub> perovskite solar cell with the carbon back electrode demonstrates a power conversion efficiency of 11.03 % with remarkably enhanced ambient stability.</div></div>","PeriodicalId":16782,"journal":{"name":"Journal of Photochemistry and Photobiology A-chemistry","volume":"474 ","pages":"Article 116971"},"PeriodicalIF":4.7,"publicationDate":"2025-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145691392","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}
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