Sulfate modification CeO₂: A strategy for SF₆ photocatalytic degradation.

IF 4.5 2区综合性期刊 Q1 MULTIDISCIPLINARY SCIENCES

iScience Pub Date : 2026-10-05 eCollection Date: 2026-10-16 DOI:10.1016/j.isci.2026.117751

Shan Zhu, Yue Zhao, Yang Wu, Fengxiang Ma, Tao Lin, Jun Cao, Chen Hang

{"title":"Sulfate modification CeO2: A strategy for SF6 photocatalytic degradation.","authors":"Shan Zhu, Yue Zhao, Yang Wu, Fengxiang Ma, Tao Lin, Jun Cao, Chen Hang","doi":"10.1016/j.isci.2026.117751","DOIUrl":null,"url":null,"abstract":"Sulfur hexafluoride (SF6) is extensively employed in high-voltage electrical equipment due to its exceptional dielectric properties, yet its potent greenhouse effect and extreme chemical inertness demand efficient abatement strategies. This study presents sulfate-modified ceria (CeO2) photocatalysts designed to activate robust S-F bonds through surface Brønsted acid sites. Sulfate groups anchored on CeO2 polarize SF6 molecules and facilitate photogenerated electron injection into antibonding orbitals, enabling reductive bond cleavage under mild conditions. The optimized 0.5SCe catalyst achieves an SF6 degradation amount of 7.41 mL g-1 within 24 h under 365 nm LED irradiation, representing a 10.4-fold enhancement over pristine CeO2. The catalyst maintains stable performance across consecutive cycles and 96 h of continuous operation. This surface acidity engineering strategy offers a sustainable pathway for controlling fluorinated greenhouse gas emissions.","PeriodicalId":342,"journal":{"name":"iScience","volume":"29 10","pages":"117751"},"PeriodicalIF":4.5000,"publicationDate":"2026-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13673362/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"iScience","FirstCategoryId":"103","ListUrlMain":"https://doi.org/10.1016/j.isci.2026.117751","RegionNum":2,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/10/16 0:00:00","PubModel":"eCollection","JCR":"Q1","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

Sulfur hexafluoride (SF₆) is extensively employed in high-voltage electrical equipment due to its exceptional dielectric properties, yet its potent greenhouse effect and extreme chemical inertness demand efficient abatement strategies. This study presents sulfate-modified ceria (CeO₂) photocatalysts designed to activate robust S-F bonds through surface Brønsted acid sites. Sulfate groups anchored on CeO₂ polarize SF₆ molecules and facilitate photogenerated electron injection into antibonding orbitals, enabling reductive bond cleavage under mild conditions. The optimized 0.5SCe catalyst achieves an SF₆ degradation amount of 7.41 mL g^-1 within 24 h under 365 nm LED irradiation, representing a 10.4-fold enhancement over pristine CeO₂. The catalyst maintains stable performance across consecutive cycles and 96 h of continuous operation. This surface acidity engineering strategy offers a sustainable pathway for controlling fluorinated greenhouse gas emissions.

查看原文本刊更多论文

硫酸盐改性CeO2：光催化降解SF6的策略。

六氟化硫（SF6）由于其优异的介电性能被广泛应用于高压电气设备，但其强大的温室效应和极端的化学惰性需要有效的减排策略。本研究提出了硫酸盐修饰的铈（CeO2）光催化剂，旨在通过表面Brønsted酸位激活坚固的S-F键。锚定在CeO2上的硫酸盐基团使SF6分子极化，并促进光生电子注入反键轨道，在温和条件下实现还原性键裂解。在365 nm LED照射下，优化后的0.5SCe催化剂在24 h内对SF6的降解量为7.41 mL g-1，比原始CeO2提高了10.4倍。催化剂在连续循环和96小时的连续运行中保持稳定的性能。这种表面酸性工程策略为控制氟化温室气体排放提供了一条可持续的途径。

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

iScience Multidisciplinary-Multidisciplinary

CiteScore

7.20

自引率

1.70%

发文量

1972

审稿时长

6 weeks

期刊介绍： Science has many big remaining questions. To address them, we will need to work collaboratively and across disciplines. The goal of iScience is to help fuel that type of interdisciplinary thinking. iScience is a new open-access journal from Cell Press that provides a platform for original research in the life, physical, and earth sciences. The primary criterion for publication in iScience is a significant contribution to a relevant field combined with robust results and underlying methodology. The advances appearing in iScience include both fundamental and applied investigations across this interdisciplinary range of topic areas. To support transparency in scientific investigation, we are happy to consider replication studies and papers that describe negative results. We know you want your work to be published quickly and to be widely visible within your community and beyond. With the strong international reputation of Cell Press behind it, publication in iScience will help your work garner the attention and recognition it merits. Like all Cell Press journals, iScience prioritizes rapid publication. Our editorial team pays special attention to high-quality author service and to efficient, clear-cut decisions based on the information available within the manuscript. iScience taps into the expertise across Cell Press journals and selected partners to inform our editorial decisions and help publish your science in a timely and seamless way.