{"title":"一种可扩展的一步合成耐用缺陷最小化石墨金属催化剂的持续工程应用","authors":"Mengbo Cao, Ming Gao, Xingyue Wei, Hanmin Zhang","doi":"10.1021/acs.est.5c01453","DOIUrl":null,"url":null,"abstract":"Catalytic oxidation is a key method for industrial decontamination, but it suffers from low electrical conductivity and unstable catalysts. Metal-stably bonded conductive network carbon composites show great potential, while their acquisition is costly and energy-intensive. By utilizing in situ redox reactions at a gram-scale, this study directly converts biomass fibers and copper precursors into a robust metal-bonded, defect-minimized graphite framework at 80 °C, enhancing its potential for sustainable engineering applications. When deployed as a fixed-bed reactor, the engineered catalyst demonstrates unprecedented operational stability, maintaining >99% contaminant removal efficiency during 21-day operation (flow rate: ∼8000 L h<sup>–1</sup> m<sup>–2</sup>; hydraulic retention time: 37.3 s). Scalability analysis reveals a remarkable monthly processing capacity of 18,086 tons at an operational cost of 1.25 CNY/ton─representing an order-of-magnitude reduction compared to conventional industrial systems (30–60 CNY/ton). The high conductivity, stability, and adaptability complements its excellent performance, and the method can also be extended to other metals (e.g., Fe, Co) with similarly low energy requirements. The mild conditions of our synthesis method, coupled with the high stability performance, offer a sustainable oxidation decontamination route that nearly reaches the theoretical minimum energy consumption.","PeriodicalId":36,"journal":{"name":"环境科学与技术","volume":"97 1","pages":""},"PeriodicalIF":10.8000,"publicationDate":"2025-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"A Scalable One-Step Method for Synthesizing Durable Defect-Minimized Graphite-Metal Catalysts for Sustained Engineering Applications\",\"authors\":\"Mengbo Cao, Ming Gao, Xingyue Wei, Hanmin Zhang\",\"doi\":\"10.1021/acs.est.5c01453\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Catalytic oxidation is a key method for industrial decontamination, but it suffers from low electrical conductivity and unstable catalysts. Metal-stably bonded conductive network carbon composites show great potential, while their acquisition is costly and energy-intensive. By utilizing in situ redox reactions at a gram-scale, this study directly converts biomass fibers and copper precursors into a robust metal-bonded, defect-minimized graphite framework at 80 °C, enhancing its potential for sustainable engineering applications. When deployed as a fixed-bed reactor, the engineered catalyst demonstrates unprecedented operational stability, maintaining >99% contaminant removal efficiency during 21-day operation (flow rate: ∼8000 L h<sup>–1</sup> m<sup>–2</sup>; hydraulic retention time: 37.3 s). Scalability analysis reveals a remarkable monthly processing capacity of 18,086 tons at an operational cost of 1.25 CNY/ton─representing an order-of-magnitude reduction compared to conventional industrial systems (30–60 CNY/ton). The high conductivity, stability, and adaptability complements its excellent performance, and the method can also be extended to other metals (e.g., Fe, Co) with similarly low energy requirements. The mild conditions of our synthesis method, coupled with the high stability performance, offer a sustainable oxidation decontamination route that nearly reaches the theoretical minimum energy consumption.\",\"PeriodicalId\":36,\"journal\":{\"name\":\"环境科学与技术\",\"volume\":\"97 1\",\"pages\":\"\"},\"PeriodicalIF\":10.8000,\"publicationDate\":\"2025-06-07\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"环境科学与技术\",\"FirstCategoryId\":\"1\",\"ListUrlMain\":\"https://doi.org/10.1021/acs.est.5c01453\",\"RegionNum\":1,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENGINEERING, ENVIRONMENTAL\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"环境科学与技术","FirstCategoryId":"1","ListUrlMain":"https://doi.org/10.1021/acs.est.5c01453","RegionNum":1,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ENVIRONMENTAL","Score":null,"Total":0}
引用次数: 0
摘要
催化氧化法是工业净化的关键方法,但存在电导率低、催化剂不稳定等问题。金属稳定键合的导电网络碳复合材料显示出巨大的潜力,但其获取成本高且能耗大。通过利用克级的原位氧化还原反应,本研究在80°C下直接将生物质纤维和铜前体转化为坚固的金属键合,缺陷最小化的石墨框架,增强了其可持续工程应用的潜力。当作为固定床反应器部署时,工程催化剂表现出前所未有的运行稳定性,在21天的运行中保持99%的污染物去除率(流量:~ 8000 L h-1 m-2;液压保持时间:37.3 s)。可扩展性分析显示,该系统的月处理能力为18,086吨,运营成本为1.25元/吨,与传统工业系统(30-60元/吨)相比,降低了一个数量级。高导电性、稳定性和适应性补充了其优异的性能,并且该方法也可以扩展到具有类似低能量需求的其他金属(例如Fe, Co)。我们的合成方法的温和条件,加上高稳定性的性能,提供了一个可持续的氧化去污路线,几乎达到理论的最低能耗。
A Scalable One-Step Method for Synthesizing Durable Defect-Minimized Graphite-Metal Catalysts for Sustained Engineering Applications
Catalytic oxidation is a key method for industrial decontamination, but it suffers from low electrical conductivity and unstable catalysts. Metal-stably bonded conductive network carbon composites show great potential, while their acquisition is costly and energy-intensive. By utilizing in situ redox reactions at a gram-scale, this study directly converts biomass fibers and copper precursors into a robust metal-bonded, defect-minimized graphite framework at 80 °C, enhancing its potential for sustainable engineering applications. When deployed as a fixed-bed reactor, the engineered catalyst demonstrates unprecedented operational stability, maintaining >99% contaminant removal efficiency during 21-day operation (flow rate: ∼8000 L h–1 m–2; hydraulic retention time: 37.3 s). Scalability analysis reveals a remarkable monthly processing capacity of 18,086 tons at an operational cost of 1.25 CNY/ton─representing an order-of-magnitude reduction compared to conventional industrial systems (30–60 CNY/ton). The high conductivity, stability, and adaptability complements its excellent performance, and the method can also be extended to other metals (e.g., Fe, Co) with similarly low energy requirements. The mild conditions of our synthesis method, coupled with the high stability performance, offer a sustainable oxidation decontamination route that nearly reaches the theoretical minimum energy consumption.
期刊介绍:
Environmental Science & Technology (ES&T) is a co-sponsored academic and technical magazine by the Hubei Provincial Environmental Protection Bureau and the Hubei Provincial Academy of Environmental Sciences.
Environmental Science & Technology (ES&T) holds the status of Chinese core journals, scientific papers source journals of China, Chinese Science Citation Database source journals, and Chinese Academic Journal Comprehensive Evaluation Database source journals. This publication focuses on the academic field of environmental protection, featuring articles related to environmental protection and technical advancements.