• 文献检索
  • 文档翻译
  • 深度研究
  • 学术资讯
  • Suppr Zotero 插件Zotero 插件
  • 邀请有礼
  • 套餐&价格
  • 历史记录
应用&插件
Suppr Zotero 插件Zotero 插件浏览器插件Mac 客户端Windows 客户端微信小程序
定价
高级版会员购买积分包购买API积分包
服务
文献检索文档翻译深度研究API 文档MCP 服务
关于我们
关于 Suppr公司介绍联系我们用户协议隐私条款
关注我们

Suppr 超能文献

核心技术专利：CN118964589B侵权必究
粤ICP备2023148730 号-1Suppr @ 2026

文献检索

告别复杂PubMed语法，用中文像聊天一样搜索，搜遍4000万医学文献。AI智能推荐，让科研检索更轻松。

立即免费搜索

文件翻译

保留排版，准确专业，支持PDF/Word/PPT等文件格式，支持 12+语言互译。

免费翻译文档

深度研究

AI帮你快速写综述，25分钟生成高质量综述，智能提取关键信息，辅助科研写作。

立即免费体验

在CaMnO-TiO异质纳米结构存在下，紫外/可见光照射增强咪唑啉酮类除草剂咪草烟的光催化降解：降解途径及反应中间体

Enhanced Photocatalytic Degradation of the Imidazolinone Herbicide Imazapyr upon UV/Vis Irradiation in the Presence of CaMnO-TiO Hetero-Nanostructures: Degradation Pathways and Reaction Intermediates.

作者信息

Bougarrani Salma, Sharma Preetam K, Hamilton Jeremy W J, Singh Anukriti, Canle Moisés, El Azzouzi Mohammed, Byrne John Anthony

机构信息

Laboratory of Spectroscopy, Molecular Modelling, Materials, Nanomaterials, Water and Environment, University Med V, Avenue Ibn Battouta, B.P. 1014 Rabat, Morocco.

NIBEC, Ulster University, Newtownabbey BT37 0QB, UK.

出版信息

Nanomaterials (Basel). 2020 May 8;10(5):896. doi: 10.3390/nano10050896.

DOI:10.3390/nano10050896
PMID:32397078
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7279346/
Abstract

The determination of reaction pathways and identification of products of pollutants degradation is central to photocatalytic environmental remediation. This work focuses on the photocatalytic degradation of the herbicide Imazapyr (2-(4-methyl-5-oxo-4-propan-2-yl-1H-imidazol-2-yl) pyridine-3-carboxylic acid) under UV-Vis and visible-only irradiation of aqueous suspensions of CaMnO-TiO, and on the identification of the corresponding degradation pathways and reaction intermediates. CaMnO-TiO was formed by mixing CaMnO and TiO by mechanical grinding followed by annealing at 500 °C. A complete structural characterization of CaMnO-TiO was carried out. The photocatalytic activity of the hetero-nanostructures was determined using phenol and Imazapyr herbicide as model pollutants in a stirred tank reactor under UV-Vis and visible-only irradiation. Using equivalent loadings, CaMnO-TiO showed a higher rate (10.6 μM·h) as compared to unmodified TiO (7.4 μM·h) for Imazapyr degradation under UV-Vis irradiation. The mineralization rate was 4.07 µM·h for CaMnO-TiO and 1.21 μM·h for TiO. In the CaMnO-TiO system, the concentration of intermediate products reached a maximum at 180 min of irradiation that then decreased to a half in 120 min. For unmodified TiO, the intermediates continuously increased with irradiation time with no decrease observed in their concentration. The enhanced efficiency of the CaMnO-TiO for the complete degradation of the Imazapyr and intermediates is attributed to an increased adsorption of polar species on the surface of CaMnO. Based on LC-MS, photocatalytic degradation pathways for Imazapyr under UV-Vis irradiation have been proposed. Some photocatalytic degradation was obtained under visible-only irradiation for CaMnO-TiO. Hydroxyl radicals were found to be main reactive oxygen species responsible for the photocatalytic degradation through radical scavenger investigations.

摘要

确定反应途径和识别污染物降解产物是光催化环境修复的核心。这项工作聚焦于在紫外-可见光和仅可见光照射下，CaMnO-TiO水悬浮液中除草剂咪草烟（2-(4-甲基-5-氧代-4-丙-2-基-1H-咪唑-2-基)吡啶-3-羧酸）的光催化降解，以及识别相应的降解途径和反应中间体。CaMnO-TiO是通过机械研磨将CaMnO和TiO混合，然后在500℃退火形成的。对CaMnO-TiO进行了完整的结构表征。在搅拌釜反应器中，以苯酚和咪草烟除草剂作为模型污染物，在紫外-可见光和仅可见光照射下测定了异质纳米结构的光催化活性。在紫外-可见光照射下，对于咪草烟降解，使用等量负载时，CaMnO-TiO的降解速率（10.6 μM·h）高于未改性的TiO（7.4 μM·h）。CaMnO-TiO的矿化速率为4.07 µM·h，TiO为1.21 μM·h。在CaMnO-TiO体系中，中间产物浓度在照射180分钟时达到最大值，然后在120分钟内降至一半。对于未改性的TiO，中间产物浓度随照射时间持续增加，未观察到浓度下降。CaMnO-TiO对咪草烟和中间产物完全降解效率的提高归因于CaMnO表面极性物种吸附的增加。基于液相色谱-质谱联用，提出了紫外-可见光照射下咪草烟的光催化降解途径。对于CaMnO-TiO，在仅可见光照射下也获得了一些光催化降解。通过自由基清除剂研究发现，羟基自由基是负责光催化降解的主要活性氧物种。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/210a0cdb7908/nanomaterials-10-00896-g020.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/3bfe92005512/nanomaterials-10-00896-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/c5ca45ad9e25/nanomaterials-10-00896-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/66f1453b8483/nanomaterials-10-00896-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/e9e23bb7ec10/nanomaterials-10-00896-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/f8c7c9c2b4c2/nanomaterials-10-00896-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/c99c9cdcdb95/nanomaterials-10-00896-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/434a536daaec/nanomaterials-10-00896-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/d0415a41cca2/nanomaterials-10-00896-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/045ab8a8493c/nanomaterials-10-00896-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/eae5d461a13b/nanomaterials-10-00896-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/ed36a3387983/nanomaterials-10-00896-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/e53ad0f807e7/nanomaterials-10-00896-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/817b1e911643/nanomaterials-10-00896-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/e96046bc0876/nanomaterials-10-00896-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/e39e8cb41574/nanomaterials-10-00896-g015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/1348f4e2debb/nanomaterials-10-00896-g016.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/75dd7f80c20b/nanomaterials-10-00896-g017.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/c3beeec58eac/nanomaterials-10-00896-g018.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/3693c8c62435/nanomaterials-10-00896-g019.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/210a0cdb7908/nanomaterials-10-00896-g020.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/3bfe92005512/nanomaterials-10-00896-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/c5ca45ad9e25/nanomaterials-10-00896-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/66f1453b8483/nanomaterials-10-00896-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/e9e23bb7ec10/nanomaterials-10-00896-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/f8c7c9c2b4c2/nanomaterials-10-00896-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/c99c9cdcdb95/nanomaterials-10-00896-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/434a536daaec/nanomaterials-10-00896-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/d0415a41cca2/nanomaterials-10-00896-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/045ab8a8493c/nanomaterials-10-00896-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/eae5d461a13b/nanomaterials-10-00896-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/ed36a3387983/nanomaterials-10-00896-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/e53ad0f807e7/nanomaterials-10-00896-g012.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/817b1e911643/nanomaterials-10-00896-g013.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/e96046bc0876/nanomaterials-10-00896-g014.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/e39e8cb41574/nanomaterials-10-00896-g015.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/1348f4e2debb/nanomaterials-10-00896-g016.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/75dd7f80c20b/nanomaterials-10-00896-g017.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/c3beeec58eac/nanomaterials-10-00896-g018.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/3693c8c62435/nanomaterials-10-00896-g019.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/5e94/7279346/210a0cdb7908/nanomaterials-10-00896-g020.jpg

相似文献

1
Enhanced Photocatalytic Degradation of the Imidazolinone Herbicide Imazapyr upon UV/Vis Irradiation in the Presence of CaMnO-TiO Hetero-Nanostructures: Degradation Pathways and Reaction Intermediates.在CaMnO-TiO异质纳米结构存在下，紫外/可见光照射增强咪唑啉酮类除草剂咪草烟的光催化降解：降解途径及反应中间体
Nanomaterials (Basel). 2020 May 8;10(5):896. doi: 10.3390/nano10050896.
2
Assessment of the roles of reactive oxygen species in the UV and visible light photocatalytic degradation of cyanotoxins and water taste and odor compounds using C-TiO2.评估 C-TiO2 在利用紫外光和可见光光催化降解蓝藻毒素和水中异味化合物过程中活性氧的作用。
Water Res. 2016 Mar 1;90:52-61. doi: 10.1016/j.watres.2015.12.006. Epub 2015 Dec 11.
3
Use of Selected Scavengers for the Determination of NF-TiO Reactive Oxygen Species during the Degradation of Microcystin-LR under Visible Light Irradiation.在可见光照射下微囊藻毒素-LR降解过程中使用选定清除剂测定NF-TiO活性氧物种
J Mol Catal A Chem. 2016 Dec 15;425(0):183-189. doi: 10.1016/j.molcata.2016.09.035.
4
Ease synthesis of mesoporous WO3-TiO2 nanocomposites with enhanced photocatalytic performance for photodegradation of herbicide imazapyr under visible light and UV illumination.易于合成介孔 WO3-TiO2 纳米复合材料，在可见光和紫外光照射下提高光催化性能，用于降解除草剂咪唑pyr。
J Hazard Mater. 2016 Apr 15;307:43-54. doi: 10.1016/j.jhazmat.2015.12.041. Epub 2015 Dec 28.
5
Factors Influencing Imazapyr Herbicide Removal from Wastewater Using Photocatalytic Ozonation.影响使用光催化臭氧化法去除废水中咪唑乙烟酸除草剂的因素。
Acta Chim Slov. 2018 Jun;65(2):470-474. doi: 10.17344/acsi.2018.4297.
6
Enhanced photocatalytic degradation of Amaranth dye on mesoporous anatase TiO: evidence of C-N, N[double bond, length as m-dash]N bond cleavage and identification of new intermediates.苋菜红染料在介孔锐钛矿型TiO₂上的光催化降解增强：C-N、N=N键断裂的证据及新中间体的鉴定
Photochem Photobiol Sci. 2017 Jul 1;16(7):1126-1138. doi: 10.1039/c7pp00090a. Epub 2017 May 26.
7
Improved Photocatalyzed Degradation of Phenol, as a Model Pollutant, over Metal-Impregnated Nanosized TiO.以苯酚作为模型污染物，金属负载纳米二氧化钛对其光催化降解性能的提升
Nanomaterials (Basel). 2020 May 22;10(5):996. doi: 10.3390/nano10050996.
8
Efficient photocatalytic degradation of acrylonitrile by Sulfur-Bismuth co-doped F-TiO/SiO nanopowder.硫铋共掺杂 F-TiO/SiO 纳米粉体高效光催化降解丙烯腈。
Chemosphere. 2020 Jun;249:126135. doi: 10.1016/j.chemosphere.2020.126135. Epub 2020 Feb 6.
9
Efficient photodecomposition of herbicide imazapyr over mesoporous GaO-TiO nanocomposites.介孔 GaO-TiO 纳米复合材料上高效光解除草剂咪草烟。
J Hazard Mater. 2018 Jan 15;342:519-526. doi: 10.1016/j.jhazmat.2017.08.046. Epub 2017 Aug 23.
10
Photocatalytic degradation of the herbicide erioglaucine in the presence of nanosized titanium dioxide: comparison and modeling of reaction kinetics.纳米二氧化钛存在下除草剂亮蓝的光催化降解：反应动力学的比较与建模
J Environ Sci Health B. 2006;41(8):1273-90. doi: 10.1080/03601230600962302.

引用本文的文献

1
Photosensitized Thermoplastic Nano-Photocatalysts Active in the Visible Light Range for Potential Applications Inside Extraterrestrial Facilities.用于外星设施内部潜在应用的可见光范围内具有活性的光敏热塑性纳米光催化剂。
Nanomaterials (Basel). 2022 Mar 17;12(6):996. doi: 10.3390/nano12060996.

本文引用的文献

1
Photocatalytic degradation of diclofenac using TiO-SnO mixed oxide catalysts.使用TiO-SnO混合氧化物催化剂光催化降解双氯芬酸。
Environ Technol. 2019 Mar;40(7):929-941. doi: 10.1080/09593330.2017.1411398. Epub 2017 Dec 26.
2
Stability and Performance of Sulfide-, Nitride-, and Phosphide-Based Electrodes for Photocatalytic Solar Water Splitting.用于光催化太阳能水分解的硫化物、氮化物和磷化物基电极的稳定性和性能
J Phys Chem Lett. 2017 Oct 19;8(20):5228-5238. doi: 10.1021/acs.jpclett.7b00772. Epub 2017 Oct 11.
3
Effect of the calcination temperature on the photocatalytic efficiency of acidic sol-gel synthesized TiO nanoparticles in the degradation of alprazolam.
煅烧温度对酸性溶胶-凝胶法合成的TiO纳米颗粒光催化降解阿普唑仑效率的影响
Photochem Photobiol Sci. 2017 Jun 14;16(6):935-945. doi: 10.1039/c6pp00447d.
4
An overview on limitations of TiO2-based particles for photocatalytic degradation of organic pollutants and the corresponding countermeasures.TiO2 基颗粒在光催化降解有机污染物方面的局限性概述及相应对策。
Water Res. 2015 Aug 1;79:128-46. doi: 10.1016/j.watres.2015.04.038. Epub 2015 May 7.
5
Facile Photochemical Synthesis of Au/Pt/g-C3N4 with Plasmon-Enhanced Photocatalytic Activity for Antibiotic Degradation.具有等离子体增强光催化活性用于抗生素降解的Au/Pt/g-C3N4的简便光化学合成
ACS Appl Mater Interfaces. 2015 May 13;7(18):9630-7. doi: 10.1021/acsami.5b01212. Epub 2015 Apr 28.
6
A review of heterogeneous photocatalysis for water and surface disinfection.用于水和表面消毒的多相光催化综述。
Molecules. 2015 Mar 30;20(4):5574-615. doi: 10.3390/molecules20045574.
7
Screen-printed calcium-birnessite electrodes for water oxidation at neutral pH and an "electrochemical harriman series".用于中性pH值下析氧反应的丝网印刷水钠锰矿钙电极及“电化学哈里曼系列”
ChemSusChem. 2014 Dec;7(12):3442-51. doi: 10.1002/cssc.201402533. Epub 2014 Oct 24.
8
An atlas of two-dimensional materials.二维材料图谱
Chem Soc Rev. 2014 Sep 21;43(18):6537-54. doi: 10.1039/c4cs00102h.
9
Water-oxidation catalysis by synthetic manganese oxides--systematic variations of the calcium birnessite theme.合成锰氧化物的水氧化催化作用——钙锰矿主题的系统变化。
Dalton Trans. 2014 Mar 21;43(11):4370-9. doi: 10.1039/c3dt52604f.
10
Band gap narrowing of titanium dioxide (TiO2) nanocrystals by electrochemically active biofilms and their visible light activity.通过电化学活性生物膜缩小二氧化钛（TiO2）纳米晶体的带隙及其可见光活性。
Nanoscale. 2013 Jul 21;5(14):6323-6. doi: 10.1039/c3nr01280h. Epub 2013 Jun 11.