Carbon/iron co-product from clean hydrogen production as a tri-functional adsorbent and catalyst for efficient wastewater treatment

IF 20.2 1区化学 Q1 CHEMISTRY, PHYSICAL Applied Catalysis B: Environmental Pub Date : 2023-10-17 DOI:10.1016/j.apcatb.2023.123380

Yuanyuan Yao, Yuqi Pan, Leo Lai, Zixun Yu, Jiaxiang Chen, Yanxi Yu, Terrence Darma, Yongwen Tao, Liuyue Cao, Benjamin Chivers, Xia Zhong, Li Wei, Yuan Chen

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Abstract

Clean hydrogen production via methane pyrolysis (CH₄ → 2H₂ + C) generates large quantities of solid carbon. Realizing their applications is a critical gap to enable its broader adoption. Here, we show that carbon nano onions encapsulated with iron cores (Fe@CNO) produced in CH₄ pyrolysis using low-cost Fe ore catalysts can serve as a tri-functional adsorbent and catalyst for organic contaminant degradation. Fe@CNO has a high adsorption capacity and fast pseudo-second-order adsorption kinetics for antibiotics in wastewater. Surface oxidized Fe@CNO presents a high catalytic activity for in situ hydrogen peroxide production. Fe@CNO is also an efficient heterogeneous Fenton catalyst to degrade adsorbed antibiotics. Further, the Fe core is magnetic, enabling easy separation from solvents as reusable adsorbents and catalysts. We demonstrate that the adsorption and electro-Fenton process applies to various organic pollutants in different water matrices. This opens a new strategy for utilizing co-products from H₂ production for sustainable environmental applications.

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清洁氢气生产中的碳/铁共产物作为高效废水处理的三功能吸附剂和催化剂

通过甲烷热解生产清洁氢气（CH4→ 2H2+C）产生大量的固体碳。实现它们的应用程序是实现其更广泛采用的关键差距。在这里，我们展示了用铁芯包裹的碳纳米洋葱(Fe@CNO)使用低成本铁矿石催化剂在CH4热解中产生的CH4可以用作三功能吸附剂和有机污染物降解催化剂。Fe@CNO对废水中的抗生素具有较高的吸附能力和快速的拟二阶吸附动力学。表面氧化Fe@CNO对原位过氧化氢生产具有高催化活性。Fe@CNO也是一种有效的非均相芬顿催化剂来降解吸附的抗生素。此外，Fe核是磁性的，能够作为可重复使用的吸附剂和催化剂容易地与溶剂分离。我们证明了吸附-电芬顿过程适用于不同水基质中的各种有机污染物。这为利用H2生产的副产品进行可持续环境应用开辟了新的战略。

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来源期刊

Applied Catalysis B: Environmental 环境科学-工程：化工

CiteScore

38.60

自引率

6.30%

发文量

1117

审稿时长

24 days

期刊介绍： Applied Catalysis B: Environment and Energy (formerly Applied Catalysis B: Environmental) is a journal that focuses on the transition towards cleaner and more sustainable energy sources. The journal's publications cover a wide range of topics, including: 1.Catalytic elimination of environmental pollutants such as nitrogen oxides, carbon monoxide, sulfur compounds, chlorinated and other organic compounds, and soot emitted from stationary or mobile sources. 2.Basic understanding of catalysts used in environmental pollution abatement, particularly in industrial processes. 3.All aspects of preparation, characterization, activation, deactivation, and regeneration of novel and commercially applicable environmental catalysts. 4.New catalytic routes and processes for the production of clean energy, such as hydrogen generation via catalytic fuel processing, and new catalysts and electrocatalysts for fuel cells. 5.Catalytic reactions that convert wastes into useful products. 6.Clean manufacturing techniques that replace toxic chemicals with environmentally friendly catalysts. 7.Scientific aspects of photocatalytic processes and a basic understanding of photocatalysts as applied to environmental problems. 8.New catalytic combustion technologies and catalysts. 9.New catalytic non-enzymatic transformations of biomass components. The journal is abstracted and indexed in API Abstracts, Research Alert, Chemical Abstracts, Web of Science, Theoretical Chemical Engineering Abstracts, Engineering, Technology & Applied Sciences, and others.