Synthesis of High Value-added Carbide Materials (MXenes) from Recycled Oxides

Hanjung Kwon

doi:10.7844/kirr.2024.33.4.29

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2024 Vol.33, Issue 4 Preview Page Next Page

Research Paper

Synthesis of High Value-added Carbide Materials (MXenes) from Recycled Oxides 재활용 산화물로부터 고부가가치 탄화물(맥신) 소재 합성

31 August 2024. pp. 29-35

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Abstract

The recycling of waste resources, such as spent catalysts, primarily involves leaching and extracting metal components via smelting. These metal components are then recovered as salts, such as sulfates and nitrates. When crystallization occurs during the calcination of the recovered salts, the salts are converted into oxides, which are then reduced to form metals or ceramic materials. Common reducing agents used in oxide reduction include hydrogen and carbon, and metal powders are obtained upon reduction. Carbide synthesis can occur if the recycled element is a transition metal and carbon is used as the reducing agent. Despite being ceramic materials, transition metal carbides exhibit excellent conductivity owing to their metallic bonding. Recently, MXene, a two-dimensional transition metal carbide, has gained attention for electromagnetic wave shielding, secondary battery electrodes, and water purification owing to its electrical conductivity and large surface area. This study developed a process for synthesizing high-value MXene materials from waste resources. The properties of these MXenes were evaluated to confirm the potential of using waste resources as raw materials for MXenes.

Keywords

Waste resources

Recycling

Transition metal

Carbide

MXene

폐촉매 등 폐자원에 대한 재활용은 대부분 제련 공정을 통해 금속 성분을 침출 및 추출하는 과정이며 금속 성분은 황산염, 질산염과 같은 염 형태로 회수된다. 회수된 염에 대한 하소를 통해 염은 산화물로 변화하며 산화물은 환원 과정을 거쳐 금속 혹은 세라믹 소재가 된다. 산화물 환원 과정에서 사용되는 환원제는 수소, 탄소 등이 있으며 환원을 통해 금속 분말이 얻어지게 되는데 재활용된 원소가 전이 금속이고 탄소를 환원제로 사용하는 경우 탄화물 합성이 가능하다. 전이 금속 탄화물의 경우 세라믹 물질임에도 불구하고 금속 결합으로 인해 전도성이 우수한 것으로 알려져 있으며 최근 이차원 전이 금속 탄화물인 맥신(MXene)은 전기 전도성뿐 아니라 넓은 표면적이라는 구조적 특징으로 인해 전자파 차폐, 이차전지 전극, 수 처리용 소재로 주목받고 있다. 본 연구에서는 폐자원으로부터 고부가가치 맥신 소재를 합성하기 위한 공정을 개발하고자 하였으며 결과적으로 폐자원을 원료로 합성된 맥신의 특성을 평가하여 폐자원의 맥신 원료 적용 가능성을 확인하였다.

키워드

폐자원

재활용

전이 금속

탄화물

맥신

References

Choi I., Moon G., Lee J.-Y., et al., 2018 : Hydrometallurgical processing of spent selective catalytic reduction (SCR) catalyst for recovery of tungsten, Hydrometallurgy, 178, pp.137-145.

10.1016/j.hydromet.2018.04.011

Moon G., Cho Y.-C., Lee J.-Y., et al., 2019 : Desilication of Highly Acidic Titanyl Chloride Solution for the Production of High-Purity Titania Pigment from a Spent Selective Catalytic Reduction Catalyst, Materials Transactions, 60, pp.988-996.

10.2320/matertrans.M2019045

Barin I., 1997 : Thermochemical data of pure substances, pp.1528-1634, 3rd Edition, Wiley, Weinheim.

Gaskell D., 2003 : Introduction to the Thermodynamics of Materials, pp.219-264, 4th Edition, Tylor & Francis, New York.

Toth L., Margrave J., 1971 : Transition metal carbides and nitrides, pp.11-12, 1st Edition, Academic Press, New York.

Koc R. and Folmer J.S., 1997 : Carbothermal Synthesis of Titanium Carbide Using Ultrafine Titania Powders, Journal of Materials Science, 32, pp.3101-3111.

10.1023/A:1018634214088

Kwon H., Moon A., Kim W., et al., 2018 : Investigation of the conditions required for the formation of V(C,N) during carburization of vanadium or carbothermal reduction of V₂O₅ under nitrogen, Ceramics International, 44, pp.2847-2855.

10.1016/j.ceramint.2017.11.031

Naguib M., Kurtoglu M., Presser V., et al., 2011 : Two-dimensional nanocrystals produced by exfoliation of Ti₃AlC₂, Advanced Materials, 23, pp.4248-4253.

10.1002/adma.20110230621861270

Iqbal A., Kim H., Oh J., et al., 2023: Effect of Substitutional Oxygen on Properties of Ti₃C₂Tx MXene Produced Using Recycled TiO₂ Source, Small Methods, 7, 2201715.

10.1002/smtd.20220171536855195

Kwon H. and Kang S., 2008: Effect of Milling on the Carbothermal Reduction of Oxide Mixture for (Ti,W)C-Ni, Materials Transactions, 49, pp.1594-1599.

10.2320/matertrans.MRA2007267

Iqbal A., Shahzad F., Hantanasirisakul K., et al., 2020 : Anomalous absorption of electromagnetic waves by 2D transition metal carbonitride Ti₃CNT₂ (MXene), Science, 369, pp.446-450.

10.1126/science.aba797732703878

VahidMohammadi A., Hadjikhani A., Shahbazmohamadi S., et al., 2017 : Two-Dimensional Vanadium Carbide (MXene) as a High-Capacity Cathode Material forRechargeable Aluminum Batteries, ACS Nano, 11, pp.11135-11144.

10.1021/acsnano.7b0535029039915

Information

Publisher :The Korean Institute of Resources Recycling
Publisher(Ko) :한국자원리싸이클링학회
Journal Title :Resources Recycling
Journal Title(Ko) :자원리싸이클링
Volume : 33
No :4
Pages :29-35
Received Date : 2024-07-29
Revised Date : 2024-08-06
Accepted Date : 2024-08-08
DOI :https://doi.org/10.7844/kirr.2024.33.4.29

Resources Recycling ISSN:2765-3439(Print) 2765-3447(Online) 자원리싸이클링

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