{"title":"以 TiO2 为基体的甲基橙压印聚硅氧烷颗粒的吸附和光催化降解性能","authors":"Wenshuang Wang, Xingya Pan, Xinxin Zhang, Minglin Wang, Zijia Wang, Lingzhi Feng, Xiaolei Wang, Kongyin Zhao","doi":"10.1007/s11706-024-0693-9","DOIUrl":null,"url":null,"abstract":"<div><p>Combining molecular imprinting technique with titanium dioxide (TiO<sub>2</sub>) photocatalysis technique can improve the degradation ability and selectivity of TiO<sub>2</sub> nanoparticles towards pollutants. In this work, methyl orange-imprinted polysiloxane particles (MIPs) were synthesized using TiO<sub>2</sub> as matrix and silane as functional monomers. The adsorption capacity (<i>Q</i><sub>e</sub>) of MIPs was 20.48 mg·g<sup>−1</sup>, while the imprinting efficiency (IE) was 3.4. Such MIPs exhibited stable imprinting efficiencies and adsorption efficiencies towards methyl orange (MO) in the multi-cycle stability test. Photocatalytic degradation performances of both MIPs and non-imprinted polysiloxane particles (NIPs) were investigated. Compared with NIPs, MIPs exhibited better photocatalytic degradation performance towards MO, with the degradation efficiency of 98.8% in 12 min and the apparent rate constant (<i>K</i><sub>obs</sub>) of 0.077 min<sup>−1</sup>. The interaction between silane and MO was also studied through molecular dynamics simulation. This work provides new insights into the use of silane for the synthesis of MIPs as well as the molecular imprinting technique for applications in the field of TiO<sub>2</sub> photocatalysis.</p></div>","PeriodicalId":572,"journal":{"name":"Frontiers of Materials Science","volume":null,"pages":null},"PeriodicalIF":2.5000,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Adsorption and photocatalytic degradation performances of methyl orange-imprinted polysiloxane particles using TiO2 as matrix\",\"authors\":\"Wenshuang Wang, Xingya Pan, Xinxin Zhang, Minglin Wang, Zijia Wang, Lingzhi Feng, Xiaolei Wang, Kongyin Zhao\",\"doi\":\"10.1007/s11706-024-0693-9\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Combining molecular imprinting technique with titanium dioxide (TiO<sub>2</sub>) photocatalysis technique can improve the degradation ability and selectivity of TiO<sub>2</sub> nanoparticles towards pollutants. In this work, methyl orange-imprinted polysiloxane particles (MIPs) were synthesized using TiO<sub>2</sub> as matrix and silane as functional monomers. The adsorption capacity (<i>Q</i><sub>e</sub>) of MIPs was 20.48 mg·g<sup>−1</sup>, while the imprinting efficiency (IE) was 3.4. Such MIPs exhibited stable imprinting efficiencies and adsorption efficiencies towards methyl orange (MO) in the multi-cycle stability test. Photocatalytic degradation performances of both MIPs and non-imprinted polysiloxane particles (NIPs) were investigated. Compared with NIPs, MIPs exhibited better photocatalytic degradation performance towards MO, with the degradation efficiency of 98.8% in 12 min and the apparent rate constant (<i>K</i><sub>obs</sub>) of 0.077 min<sup>−1</sup>. The interaction between silane and MO was also studied through molecular dynamics simulation. This work provides new insights into the use of silane for the synthesis of MIPs as well as the molecular imprinting technique for applications in the field of TiO<sub>2</sub> photocatalysis.</p></div>\",\"PeriodicalId\":572,\"journal\":{\"name\":\"Frontiers of Materials Science\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.5000,\"publicationDate\":\"2024-09-13\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Frontiers of Materials Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s11706-024-0693-9\",\"RegionNum\":4,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Frontiers of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s11706-024-0693-9","RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Adsorption and photocatalytic degradation performances of methyl orange-imprinted polysiloxane particles using TiO2 as matrix
Combining molecular imprinting technique with titanium dioxide (TiO2) photocatalysis technique can improve the degradation ability and selectivity of TiO2 nanoparticles towards pollutants. In this work, methyl orange-imprinted polysiloxane particles (MIPs) were synthesized using TiO2 as matrix and silane as functional monomers. The adsorption capacity (Qe) of MIPs was 20.48 mg·g−1, while the imprinting efficiency (IE) was 3.4. Such MIPs exhibited stable imprinting efficiencies and adsorption efficiencies towards methyl orange (MO) in the multi-cycle stability test. Photocatalytic degradation performances of both MIPs and non-imprinted polysiloxane particles (NIPs) were investigated. Compared with NIPs, MIPs exhibited better photocatalytic degradation performance towards MO, with the degradation efficiency of 98.8% in 12 min and the apparent rate constant (Kobs) of 0.077 min−1. The interaction between silane and MO was also studied through molecular dynamics simulation. This work provides new insights into the use of silane for the synthesis of MIPs as well as the molecular imprinting technique for applications in the field of TiO2 photocatalysis.
期刊介绍:
Frontiers of Materials Science is a peer-reviewed international journal that publishes high quality reviews/mini-reviews, full-length research papers, and short Communications recording the latest pioneering studies on all aspects of materials science. It aims at providing a forum to promote communication and exchange between scientists in the worldwide materials science community.
The subjects are seen from international and interdisciplinary perspectives covering areas including (but not limited to):
Biomaterials including biomimetics and biomineralization;
Nano materials;
Polymers and composites;
New metallic materials;
Advanced ceramics;
Materials modeling and computation;
Frontier materials synthesis and characterization;
Novel methods for materials manufacturing;
Materials performance;
Materials applications in energy, information and biotechnology.