{"title":"In situ growth of CoP on nickel foam for peroxymonosulfate activation via non-radical pathways in rhodamine B degradation","authors":"Xiaoyu Qiu, Zhimei Li, Jianmei Cen, Hong Tang","doi":"10.1016/j.ica.2025.122771","DOIUrl":null,"url":null,"abstract":"<div><div>Transition metal-based materials have emerged as a promising catalyst for peroxymonosulfate (PMS) activation in pollutant removal. However, challenges such as nano-material agglomeration, high metal ion leaching, and low reactive oxygen species (ROS) yield still hinder their practical application. In this work, the CoP/NF successfully was synthesized to tune PMS activation from a radical pathway to a non-radical dominated pathway for efficient degradation of organic pollutants. The incorporation of phosphorus element modulated the cobalt-based catalyst surface charge state and induced local charge density, facilitating the catalytic activity. Consequently, at optimal conditions (catalyst = 1.5 cm<sup>2</sup>, PMS = 0.3 g/L), CoP/NF achieved nearly complete removal of 40 mg/L rhodamine B (RhB) within 2 min over a wide pH (3.0–9.0), and maintained a strong anti-interference capacity for NO<sub>3</sub><sup>−</sup>, PO<sub>4</sub><sup>2−</sup>, Cl<sup>−</sup>. Furthermore, the degradation efficiency of RhB in the CoP/NF + PMS system remained 98 % even after 5 cycles. Impressively, ROS trapping and electron spin resonance (EPR) analyses revealed that the degradation process was dominantly driven by superoxide radicals (O<sub>2</sub><sup>•–</sup>) and singlet oxygen (<sup>1</sup>O<sub>2</sub>), which served as the key mechanism for the CoP/NF + PMS system. This work provided further insights into tuning PMS activation pathway via the integration of metal phosphides growth on nickel foam for sustainable water treatment.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"585 ","pages":"Article 122771"},"PeriodicalIF":2.7000,"publicationDate":"2025-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Inorganica Chimica Acta","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0020169325002373","RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, INORGANIC & NUCLEAR","Score":null,"Total":0}
引用次数: 0
Abstract
Transition metal-based materials have emerged as a promising catalyst for peroxymonosulfate (PMS) activation in pollutant removal. However, challenges such as nano-material agglomeration, high metal ion leaching, and low reactive oxygen species (ROS) yield still hinder their practical application. In this work, the CoP/NF successfully was synthesized to tune PMS activation from a radical pathway to a non-radical dominated pathway for efficient degradation of organic pollutants. The incorporation of phosphorus element modulated the cobalt-based catalyst surface charge state and induced local charge density, facilitating the catalytic activity. Consequently, at optimal conditions (catalyst = 1.5 cm2, PMS = 0.3 g/L), CoP/NF achieved nearly complete removal of 40 mg/L rhodamine B (RhB) within 2 min over a wide pH (3.0–9.0), and maintained a strong anti-interference capacity for NO3−, PO42−, Cl−. Furthermore, the degradation efficiency of RhB in the CoP/NF + PMS system remained 98 % even after 5 cycles. Impressively, ROS trapping and electron spin resonance (EPR) analyses revealed that the degradation process was dominantly driven by superoxide radicals (O2•–) and singlet oxygen (1O2), which served as the key mechanism for the CoP/NF + PMS system. This work provided further insights into tuning PMS activation pathway via the integration of metal phosphides growth on nickel foam for sustainable water treatment.
期刊介绍:
Inorganica Chimica Acta is an established international forum for all aspects of advanced Inorganic Chemistry. Original papers of high scientific level and interest are published in the form of Articles and Reviews.
Topics covered include:
• chemistry of the main group elements and the d- and f-block metals, including the synthesis, characterization and reactivity of coordination, organometallic, biomimetic, supramolecular coordination compounds, including associated computational studies;
• synthesis, physico-chemical properties, applications of molecule-based nano-scaled clusters and nanomaterials designed using the principles of coordination chemistry, as well as coordination polymers (CPs), metal-organic frameworks (MOFs), metal-organic polyhedra (MPOs);
• reaction mechanisms and physico-chemical investigations computational studies of metalloenzymes and their models;
• applications of inorganic compounds, metallodrugs and molecule-based materials.
Papers composed primarily of structural reports will typically not be considered for publication.