Anchoring CuNi bimetallic nanoparticles on amine functionalized mesoporous SBA-15 catalyst for efficient removal of toxic organic pollutants from water medium
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引用次数: 0
Abstract
The hunt for low-cost, high-efficiency catalysts has long been a priority in wastewater treatment and organic transformation. In this study, CuNi bimetallic nanoparticles embedded in the cages of mesoporous silica support catalyst (CuNi@SBA-15) was prepared for the efficient reduction of nitroaromatics (NAs) and organic dyes. The CuNi@SBA-15 catalyst revealed superior activity for 4-nitrophenol (4-NP) reduction than other two mono-metallic counterparts. Moreover, CuNi@SBA-15 catalyst exhibited significant activity for the degradation of other NAs and dyes, including 2-nitrophenol (2-NP), 4-(4-nitrophenyl)morpholine (4-NM), 4-nitroaniline (4-NA), 4-(2-fluoro-4-nitrophenyl)morpholine (4-FNM)), rhodamine B (RhB), congo red (CR), methyl orange (MO) and eosin Y (EY), respectively. Furthermore, CuNi@SBA-15 exhibited stability for the reduction of 4-NP for up to 4 catalytic cycles, after that the catalytic activity was decreased because of the metal leaching phenomenon. Additionally, we have also extended our scope of work for the simultaneous degradation of the combination of 4-NP, RhB, CR, EY and MO by CuNi@SBA-15 catalyst. Further, CuNi@SBA-15 catalyst incorporated into the fixed-bed system for 4-NP reduction and simultaneous degradation of the mixture of 4-NP, CR, RhB, EY, MO in continuous-flow mode. CuNi@SBA-15 was also evaluated its reduction ability in different environmental water samples (packed drinking, sea and river water samples). Their high catalytic activity make them ideal for removing and degrading contaminants, improving water quality and promoting sustainable water management.
期刊介绍:
The Journal of Water Process Engineering aims to publish refereed, high-quality research papers with significant novelty and impact in all areas of the engineering of water and wastewater processing . Papers on advanced and novel treatment processes and technologies are particularly welcome. The Journal considers papers in areas such as nanotechnology and biotechnology applications in water, novel oxidation and separation processes, membrane processes (except those for desalination) , catalytic processes for the removal of water contaminants, sustainable processes, water reuse and recycling, water use and wastewater minimization, integrated/hybrid technology, process modeling of water treatment and novel treatment processes. Submissions on the subject of adsorbents, including standard measurements of adsorption kinetics and equilibrium will only be considered if there is a genuine case for novelty and contribution, for example highly novel, sustainable adsorbents and their use: papers on activated carbon-type materials derived from natural matter, or surfactant-modified clays and related minerals, would not fulfil this criterion. The Journal particularly welcomes contributions involving environmentally, economically and socially sustainable technology for water treatment, including those which are energy-efficient, with minimal or no chemical consumption, and capable of water recycling and reuse that minimizes the direct disposal of wastewater to the aquatic environment. Papers that describe novel ideas for solving issues related to water quality and availability are also welcome, as are those that show the transfer of techniques from other disciplines. The Journal will consider papers dealing with processes for various water matrices including drinking water (except desalination), domestic, urban and industrial wastewaters, in addition to their residues. It is expected that the journal will be of particular relevance to chemical and process engineers working in the field. The Journal welcomes Full Text papers, Short Communications, State-of-the-Art Reviews and Letters to Editors and Case Studies