Turning Humidity Into Function: Heterojunction Interfaces for Dual-Mode Removal of Nonpolar Vapors

IF 4.5 3区材料科学 Q2 CHEMISTRY, MULTIDISCIPLINARY

Advanced Materials Interfaces Pub Date : 2026-08-04 Epub Date: 2026-07-09 DOI:10.1002/admi.70594

Jinwook Lee, Jooyoun Kim

{"title":"Turning Humidity Into Function: Heterojunction Interfaces for Dual-Mode Removal of Nonpolar Vapors","authors":"Jinwook Lee, Jooyoun Kim","doi":"10.1002/admi.70594","DOIUrl":null,"url":null,"abstract":"A core–shell heterojunction photocatalyst, MIL–88B(Fe)@Fe3(PO4)2, is directly synthesized on an oxidized iron wire that serves as both an iron source and a structural scaffold. The resulting wire-grown hetero-catalytic adsorbent (MIL@FeP@wire) exhibits efficient generation of superoxide (•O2−) and hydroxyl (•OH) radicals under light irradiation. Its gas-phase removal performance is evaluated using cyclohexane (C6H12) as a representative nonpolar volatile organic compound (VOC). MIL@FeP@wire demonstrates combined dual-mode cyclohexane removal across 10%–90% relative humidity (RH), whereas single-component materials display an adsorption- or catalysis-dominated behavior. Notably, this work elucidates how ambient humidity mediates VOC-adsorbent interactions by distinctly regulating adsorption and photocatalytic degradation pathways. Dynamic vapor sorption and hydrophobic interaction chromatography show that water vapor forms a hydration layer on MIL@FeP@wire, enhancing interfacial affinity for nonpolar cyclohexane and promoting adsorption. Concurrently, electron spin resonance confirms humidity-enhanced •OH generation, which accelerates photocatalytic oxidation. This pathway-resolved analysis, which distinguishes adsorption and photodegradation contributions, identifies water vapor as a functional mediator that regulates adsorption and catalytic degradation through hydration-induced interfacial effects in air purification.","PeriodicalId":115,"journal":{"name":"Advanced Materials Interfaces","volume":"13 15","pages":""},"PeriodicalIF":4.5000,"publicationDate":"2026-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/admi.70594","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Materials Interfaces","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/admi.70594","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/7/9 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}

引用次数: 0

Abstract

A core–shell heterojunction photocatalyst, MIL–88B(Fe)@Fe₃(PO₄)₂, is directly synthesized on an oxidized iron wire that serves as both an iron source and a structural scaffold. The resulting wire-grown hetero-catalytic adsorbent (MIL@FeP@wire) exhibits efficient generation of superoxide (•O₂⁻) and hydroxyl (•OH) radicals under light irradiation. Its gas-phase removal performance is evaluated using cyclohexane (C₆H₁₂) as a representative nonpolar volatile organic compound (VOC). MIL@FeP@wire demonstrates combined dual-mode cyclohexane removal across 10%–90% relative humidity (RH), whereas single-component materials display an adsorption- or catalysis-dominated behavior. Notably, this work elucidates how ambient humidity mediates VOC-adsorbent interactions by distinctly regulating adsorption and photocatalytic degradation pathways. Dynamic vapor sorption and hydrophobic interaction chromatography show that water vapor forms a hydration layer on MIL@FeP@wire, enhancing interfacial affinity for nonpolar cyclohexane and promoting adsorption. Concurrently, electron spin resonance confirms humidity-enhanced •OH generation, which accelerates photocatalytic oxidation. This pathway-resolved analysis, which distinguishes adsorption and photodegradation contributions, identifies water vapor as a functional mediator that regulates adsorption and catalytic degradation through hydration-induced interfacial effects in air purification.

查看原文本刊更多论文

将湿度转化为功能：用于双模式去除非极性蒸汽的异质结界面

在氧化铁丝上直接合成了一种核壳异质结光催化剂MIL-88B (Fe)@Fe3(PO4)2，该氧化铁丝既是铁源又是结构支架。所得的金属丝生长的杂催化吸附剂（MIL@FeP@wire）在光照射下表现出超氧化物（•O2−）和羟基（•OH）自由基的高效生成。以环己烷（C6H12）为代表的非极性挥发性有机化合物（VOC）评价其气相去除性能。MIL@FeP@wire展示了在10%-90%相对湿度（RH）下组合的双模式环己烷去除，而单组分材料显示了吸附或催化主导的行为。值得注意的是，这项工作阐明了环境湿度如何通过明显调节吸附和光催化降解途径来调节voc吸附剂的相互作用。动态水蒸气吸附和疏水相互作用色谱分析表明，水蒸气在MIL@FeP@wire上形成水化层，增强了对非极性环己烷的界面亲和力，促进了吸附。同时，电子自旋共振证实了湿度增强的•OH生成，这加速了光催化氧化。这一途径解析分析区分了吸附和光降解的贡献，确定了水蒸气是一种功能介质，通过水合作用诱导的界面效应调节空气净化中的吸附和催化降解。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Advanced Materials Interfaces CHEMISTRY, MULTIDISCIPLINARY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

8.40

自引率

5.60%

发文量

1174

审稿时长

1.3 months

期刊介绍： Advanced Materials Interfaces publishes top-level research on interface technologies and effects. Considering any interface formed between solids, liquids, and gases, the journal ensures an interdisciplinary blend of physics, chemistry, materials science, and life sciences. Advanced Materials Interfaces was launched in 2014 and received an Impact Factor of 4.834 in 2018. The scope of Advanced Materials Interfaces is dedicated to interfaces and surfaces that play an essential role in virtually all materials and devices. Physics, chemistry, materials science and life sciences blend to encourage new, cross-pollinating ideas, which will drive forward our understanding of the processes at the interface. Advanced Materials Interfaces covers all topics in interface-related research: Oil / water separation, Applications of nanostructured materials, 2D materials and heterostructures, Surfaces and interfaces in organic electronic devices, Catalysis and membranes, Self-assembly and nanopatterned surfaces, Composite and coating materials, Biointerfaces for technical and medical applications. Advanced Materials Interfaces provides a forum for topics on surface and interface science with a wide choice of formats: Reviews, Full Papers, and Communications, as well as Progress Reports and Research News.