EFFICIENCY OF ALUMINIUM-BASED NANOADSORBENTS FOR CARBON MONOXIDE ADSORPTION: MINI-REVIEW
EFFICIENCY OF ALUMINIUM-BASED NANOADSORBENTS FOR CARBON MONOXIDE ADSORPTION: MINI-REVIEW

Summary/Abstract: Background: Today, scientists are exploring the best technology to improve air quality for human health, which is especially important in conditions of actively developing technogenic activity and following emergencies. Planning and development of towns and regions should include adequate gas cleaning to minimize the amount of CO in the atmosphere, as this gas is responsible for the ozone layer's depletion and other atmospheric negative impacts. Objectives: The current study aims to explore some of the features and the characteristics of such nanoadsorbents for the CO adsorption from atmospheric air, with an emphasis on their potential prospects. Methods: A review of studies based on publications in peer-reviewed scientific journals was conducted. Mostly the most recent publications and the most cited ones were taken into account. Results: It has been established that among several phases (δ-, η-, θ-, and γ-) of alumina, γ-alumina that is recognized as transition alumina is the suitable choice for capturing CO gas because it has a large surface area, an excellent catalytic activity, pore-volume. The roll-coating method leads composite films to have special properties, such as a high mechanical property and surface area, simplicity to produce, and needless to pre-treated before use. It was found that the maximum adsorption efficiency for different alumina-doped adsorbents is about 94 – 98%. Conclusion: The roller coating method for the production of composite films has proven to be a simple, cheap and reliable method for producing an effective nanoadsorbent. Alumina-doped adsorbents deserve serious attention for further development, since they are quite capable of competing in efficiency, ease of manufacture and cost with commercial adsorbents available on the market.

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