Turning coffee beverage cans into nanocatalyst for the effective removal of Caffeine and simultaneous hydrogen production

IF 5.45 Q1 Physics and Astronomy

Nano-Structures & Nano-Objects Pub Date : 2025-05-01 DOI:10.1016/j.nanoso.2025.101493

Shalumon C.S. , Chavalit Ratanatamskul

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引用次数: 0

Abstract

γ -Al₂O₃ nanoparticles were produced from waste beverage cans using NaOH as a solvent. The particles were calcined at various temperatures. As-prepared particles were characterised by X-ray powder diffraction (XRD), fourier transform infrared spectroscopy (FT-IR) and field emission scanning electron microscopy (FESEM) equipped with energy-dispersive x-ray spectroscopy (EDX). In the presence of NaBH₄, these particles removed caffeine with a high efficiency of around 100 %. The synthesised catalyst was found to increase the rate of caffeine removal by around 16–18.5 times. Furthermore, the particles had a threefold greater favourable effect on NaBH₄ hydrolysis and hydrogen release than normal. Above all, the particles were found to be recoverable and potentially reused in several cycles while maintaining high structural and chemical stability. Transforming discarded beverage cans into γ-Al₂O₃ nanoparticles is an eco-friendly and sustainable way to manage solid waste, eliminate emerging contaminants and generate energy through hydrogen production.

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将咖啡饮料罐转化为纳米催化剂，有效去除咖啡因并同时产氢

以废饮料罐为原料，以NaOH为溶剂制备γ -Al2O3纳米颗粒。这些颗粒在不同的温度下煅烧。采用x射线粉末衍射（XRD）、傅里叶变换红外光谱（FT-IR）和配备能量色散x射线能谱（EDX）的场发射扫描电镜（FESEM）对制备的颗粒进行了表征。在NaBH4存在的情况下，这些颗粒去除咖啡因的效率约为100% %。研究发现，合成的催化剂将咖啡因的去除率提高了约16-18.5 倍。此外，该颗粒对NaBH4水解和氢释放的有利作用是正常颗粒的三倍。最重要的是，人们发现这些颗粒是可回收的，可以在几个循环中重复使用，同时保持高度的结构和化学稳定性。将废弃的饮料罐转化为γ-Al2O3纳米颗粒是一种环保和可持续的方式，可以管理固体废物，消除新出现的污染物，并通过制氢产生能源。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano-Structures & Nano-Objects Physics and Astronomy-Condensed Matter Physics

CiteScore

9.20

自引率

0.00%

发文量

审稿时长

22 days

期刊介绍： Nano-Structures & Nano-Objects is a new journal devoted to all aspects of the synthesis and the properties of this new flourishing domain. The journal is devoted to novel architectures at the nano-level with an emphasis on new synthesis and characterization methods. The journal is focused on the objects rather than on their applications. However, the research for new applications of original nano-structures & nano-objects in various fields such as nano-electronics, energy conversion, catalysis, drug delivery and nano-medicine is also welcome. The scope of Nano-Structures & Nano-Objects involves: -Metal and alloy nanoparticles with complex nanostructures such as shape control, core-shell and dumbells -Oxide nanoparticles and nanostructures, with complex oxide/metal, oxide/surface and oxide /organic interfaces -Inorganic semi-conducting nanoparticles (quantum dots) with an emphasis on new phases, structures, shapes and complexity -Nanostructures involving molecular inorganic species such as nanoparticles of coordination compounds, molecular magnets, spin transition nanoparticles etc. or organic nano-objects, in particular for molecular electronics -Nanostructured materials such as nano-MOFs and nano-zeolites -Hetero-junctions between molecules and nano-objects, between different nano-objects & nanostructures or between nano-objects & nanostructures and surfaces -Methods of characterization specific of the nano size or adapted for the nano size such as X-ray and neutron scattering, light scattering, NMR, Raman, Plasmonics, near field microscopies, various TEM and SEM techniques, magnetic studies, etc .