相关实验视频

Updated: Jul 3, 2025

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

Preparation of Polyoxometalate-based Photo-responsive Membranes for the Photo-activation of Manganese Oxide Catalysts

Published on: August 7, 2018

单原子Mn嵌入碳化物作为高效的过氧硫酸盐催化剂,用于控制有害藻类繁殖

Hangjun Zhang¹, Yunyi He², Mengfan He²

¹Hangzhou Normal University, Hangzhou 311121, China; Hangzhou International Urbanology Research Center and Center for Zhejiang Urban Governance Studies, Hangzhou 311121, China; Zhejiang Provincial Key Laboratory of Urban Wetlands and Regional Change, Hangzhou 311121, China.

The Science of the total environment

|February 13, 2024

概括

一种新型的碳化物单原子催化剂通过中度氧化和凝固有效地去除有害的藻类繁殖 (HAB). 这种环保的方法保持了藻类细胞的完整性,为饮用水质量提供了更安全的解决方案.

科学领域:

环境科学环境科学
水处理处理水的方法
材料科学材料科学材料科学

背景情况:

有害藻类繁殖 (HABs) 对全球饮用水安全构成重大威胁.
基于硫酸盐基的先进氧化过程 (AOP) 用于藻类去除,但面临着诸如低活性位点暴露和二次污染等挑战.
现有的方法往往导致藻类细胞破裂,释放有害毒素.

研究的目的:

开发一种新的催化剂,以有效和环保地去除藻类.
为了研究嵌入在石墨碳化物 (SA-MCN) 催化剂上的单原子,以加强藻类细胞的氧化和凝固.
为了确保在去除过程中保持藻类细胞完整性.

主要方法:

在石墨碳化物 (SA-MCN) 上嵌入的单原子的合成.
测试SA-MCN与Peroxymonosulfate (PMS) 的催化效率,以消除Microcystis aeruginosa.
使用K+释放,马隆迪甲基度和花形态学分析藻类细胞完整性.
通过火实验,EPR,理论计算和泽塔电位分析来探索催化机制.

主要成果:

在最佳条件下 (SA-MCN 400 mg/L,PMS 0.32 mM) 在30分钟内100%去除微囊.
藻类细胞保持高完整性,破裂最小,这是低K+释放和马隆迪化物水平的证据.
该SA-MCN/PMS系统显示同时发生中度氧化和凝血,由机械学研究证实.
催化剂表现出高效率和环保性,没有金属漏或二次污染.

结论:

在石墨碳化物 (SA-MCN) 上嵌入的单原子是一种高效和环保的催化剂,用于控制HABs.
该SA-MCN/PMS系统通过中度氧化和凝固的组合有效地去除藻类,同时保持细胞完整性.
这种方法为改善饮用水安全提供了一个有希望的解决方案,通过解决HAB而不会释放额外的毒素.

关键词:

有害的藻类有害的藻类中度的氧化程度.过氧单硫酸盐的激活方式同时的凝血是同时发生的.一个单原子的原子.

更多相关视频

Coupling Carbon Capture from a Power Plant with Semi-automated Open Raceway Ponds for Microalgae Cultivation

Coupling Carbon Capture from a Power Plant with Semi-automated Open Raceway Ponds for Microalgae Cultivation

Published on: August 14, 2020

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Preparation of Biomass-based Mesoporous Carbon with Higher Nitrogen-/Oxygen-chelating Adsorption for CuII Through Microwave Pre-Pyrolysis

Published on: February 12, 2019

相关概念视频

Radical Oxidation of Allylic and Benzylic Alcohols

Radical Oxidation of Allylic and Benzylic Alcohols

Activated manganese(IV) oxide can selectively oxidize allylic and benzylic alcohols via a radical intermediate mechanism. Primary allylic alcohols are oxidized to aldehydes, while secondary allylic alcohols yield ketones. The redox reaction of potassium permanganate with an Mn(II) salt such as manganese sulfate (under either alkaline or acidic conditions), followed by thorough drying, yields the oxidizing agent: activated MnO2. While MnO2 is insoluble in the solvents used for the reaction, the...

Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate

Oxidation of Alkenes: Syn Dihydroxylation with Potassium Permanganate

Alkenes can be dihydroxylated using potassium permanganate. The method encompasses the reaction of an alkene with a cold, dilute solution of potassium permanganate under basic conditions to form a cis-diol along with a brown precipitate of manganese dioxide.