Xiaobao Chen , Meng Liu , Yu Liu , Sijian Liu , Xiaoping Li , Zonghan Huang , Lanxuan Wen , Rongwei Li , Shengjiong Yang , Dahu Ding , Bo Wang , Rongzhi Chen
{"title":"热释电-光热协同作用动态调节Ag-BiOI/BiOIO3-Nx异质结的界面电场以增强抗生素降解","authors":"Xiaobao Chen , Meng Liu , Yu Liu , Sijian Liu , Xiaoping Li , Zonghan Huang , Lanxuan Wen , Rongwei Li , Shengjiong Yang , Dahu Ding , Bo Wang , Rongzhi Chen","doi":"10.1016/j.jcat.2025.116434","DOIUrl":null,"url":null,"abstract":"<div><div>Although the static interfacial electric field (IEF) within the heterojunction enables directional photocharge transfer, the accumulated carriers shield the space charge region (SCR), thereby hindering photocharge separation. To address this, we introduce a dynamic IEF modulation strategy via Pyroelectric–photothermal synergy in Ag-BiOI/BiOIO<sub>3</sub>-N<em><sub>x</sub></em> heterojunctions (ABBN<em><sub>x</sub></em>), which effectively enhances the photocharge separation and photocatalytic activity. Specifically, the reaction rate constant (0.0179 min<sup>−1</sup>) for tetracycline (TC) degradation and photocurrent density (9.03 uA/cm<sup>2</sup>) of ABBN<sub>2</sub> were 2.67 and 2.91 times higher than those of pristine BiOIO<sub>3</sub>, respectively. Experimental findings demonstrated that the surface plasmon resonance (SPR) of Ag nanoparticles markedly improved photothermal conversion efficiency, while N doping in the BiOIO<sub>3</sub> lattice increased the polarization effect of IO<sub>3</sub> pyramids, thereby boosting pyroelectric performance. The heat generated by Ag nanoparticles through photothermal conversion induces a transient polarization electric field in BiOIO<sub>3</sub>-N<em><sub>x</sub></em>, which effectively disrupts the charge balance in the SCR, and thus ensures the continuous separation of photocharges by IEF. This work offers new insights into antibiotic wastewater treatment and the dynamic modulation of the IEF structure in photocatalytic systems.</div></div>","PeriodicalId":346,"journal":{"name":"Journal of Catalysis","volume":"452 ","pages":"Article 116434"},"PeriodicalIF":6.5000,"publicationDate":"2025-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Pyroelectric–photothermal synergy dynamically modulates interfacial electric field in Ag-BiOI/BiOIO3-Nx heterojunctions for enhanced antibiotic degradation\",\"authors\":\"Xiaobao Chen , Meng Liu , Yu Liu , Sijian Liu , Xiaoping Li , Zonghan Huang , Lanxuan Wen , Rongwei Li , Shengjiong Yang , Dahu Ding , Bo Wang , Rongzhi Chen\",\"doi\":\"10.1016/j.jcat.2025.116434\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Although the static interfacial electric field (IEF) within the heterojunction enables directional photocharge transfer, the accumulated carriers shield the space charge region (SCR), thereby hindering photocharge separation. To address this, we introduce a dynamic IEF modulation strategy via Pyroelectric–photothermal synergy in Ag-BiOI/BiOIO<sub>3</sub>-N<em><sub>x</sub></em> heterojunctions (ABBN<em><sub>x</sub></em>), which effectively enhances the photocharge separation and photocatalytic activity. Specifically, the reaction rate constant (0.0179 min<sup>−1</sup>) for tetracycline (TC) degradation and photocurrent density (9.03 uA/cm<sup>2</sup>) of ABBN<sub>2</sub> were 2.67 and 2.91 times higher than those of pristine BiOIO<sub>3</sub>, respectively. Experimental findings demonstrated that the surface plasmon resonance (SPR) of Ag nanoparticles markedly improved photothermal conversion efficiency, while N doping in the BiOIO<sub>3</sub> lattice increased the polarization effect of IO<sub>3</sub> pyramids, thereby boosting pyroelectric performance. The heat generated by Ag nanoparticles through photothermal conversion induces a transient polarization electric field in BiOIO<sub>3</sub>-N<em><sub>x</sub></em>, which effectively disrupts the charge balance in the SCR, and thus ensures the continuous separation of photocharges by IEF. This work offers new insights into antibiotic wastewater treatment and the dynamic modulation of the IEF structure in photocatalytic systems.</div></div>\",\"PeriodicalId\":346,\"journal\":{\"name\":\"Journal of Catalysis\",\"volume\":\"452 \",\"pages\":\"Article 116434\"},\"PeriodicalIF\":6.5000,\"publicationDate\":\"2025-09-16\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Catalysis\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0021951725005007\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CHEMISTRY, PHYSICAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Catalysis","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0021951725005007","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
Pyroelectric–photothermal synergy dynamically modulates interfacial electric field in Ag-BiOI/BiOIO3-Nx heterojunctions for enhanced antibiotic degradation
Although the static interfacial electric field (IEF) within the heterojunction enables directional photocharge transfer, the accumulated carriers shield the space charge region (SCR), thereby hindering photocharge separation. To address this, we introduce a dynamic IEF modulation strategy via Pyroelectric–photothermal synergy in Ag-BiOI/BiOIO3-Nx heterojunctions (ABBNx), which effectively enhances the photocharge separation and photocatalytic activity. Specifically, the reaction rate constant (0.0179 min−1) for tetracycline (TC) degradation and photocurrent density (9.03 uA/cm2) of ABBN2 were 2.67 and 2.91 times higher than those of pristine BiOIO3, respectively. Experimental findings demonstrated that the surface plasmon resonance (SPR) of Ag nanoparticles markedly improved photothermal conversion efficiency, while N doping in the BiOIO3 lattice increased the polarization effect of IO3 pyramids, thereby boosting pyroelectric performance. The heat generated by Ag nanoparticles through photothermal conversion induces a transient polarization electric field in BiOIO3-Nx, which effectively disrupts the charge balance in the SCR, and thus ensures the continuous separation of photocharges by IEF. This work offers new insights into antibiotic wastewater treatment and the dynamic modulation of the IEF structure in photocatalytic systems.
期刊介绍:
The Journal of Catalysis publishes scholarly articles on both heterogeneous and homogeneous catalysis, covering a wide range of chemical transformations. These include various types of catalysis, such as those mediated by photons, plasmons, and electrons. The focus of the studies is to understand the relationship between catalytic function and the underlying chemical properties of surfaces and metal complexes.
The articles in the journal offer innovative concepts and explore the synthesis and kinetics of inorganic solids and homogeneous complexes. Furthermore, they discuss spectroscopic techniques for characterizing catalysts, investigate the interaction of probes and reacting species with catalysts, and employ theoretical methods.
The research presented in the journal should have direct relevance to the field of catalytic processes, addressing either fundamental aspects or applications of catalysis.