Sorption behavior of slightly reduced, three-dimensionally macroporous graphene oxides for physical loading of oils and organic solvents
* 본 문서는 배포용으로 복사 및 편집이 불가합니다.
서지정보
ㆍ발행기관 : 한국탄소학회
ㆍ수록지정보 : Carbon Letters / 18권 / 1호
ㆍ저자명 : Ho Seok Park, Sung Oong Kang
ㆍ저자명 : Ho Seok Park, Sung Oong Kang
목차
1. Introduction2. Experimental
3. Results and Discussion
4. Conclusions
References
한국어 초록
High pollutant-loading capacities (up to 319 times its own weight) are achieved by three-dimensional (3D) macroporous, slightly reduced graphene oxide (srGO) sorbents, which are prepared through ice-templating and consecutive thermal reduction. The reduction of the srGO is readily controlled by heating time under a mild condition (at 1 10–2 Torr and 200°C). The saturated sorption capacity of the hydrophilic srGO sorbent (thermally reduced for 1 h) could not be improved further even though the samples were reduced for 10 h to achieve the hydrophobic surface. The large meso- and macroporosity of the srGO sorbent, which is achieved by removing the residual water and the hydroxyl groups, is crucial for achieving the enhanced capacity. In particular, a systematic study on absorption parameters indicates that the open porosity of the 3D srGO sorbents significantly contributes to the physical loading of oils and organic solvents on the hydrophilic surface. Therefore, this study provides insight into the absorption behavior of highly macroporous graphene-based macrostructures and hence paves the way to development of promising next-generation sorbents for removal of oils and organic solvent pollutants.영어 초록
High pollutant-loading capacities (up to 319 times its own weight) are achieved by three-dimensional (3D) macroporous, slightly reduced graphene oxide (srGO) sorbents, which are prepared through ice-templating and consecutive thermal reduction. The reduction of the srGO is readily controlled by heating time under a mild condition (at 1 10–2 Torr and 200°C). The saturated sorption capacity of the hydrophilic srGO sorbent (thermally reduced for 1 h) could not be improved further even though the samples were reduced for 10 h to achieve the hydrophobic surface. The large meso- and macroporosity of the srGO sorbent, which is achieved by removing the residual water and the hydroxyl groups, is crucial for achieving the enhanced capacity. In particular, a systematic study on absorption parameters indicates that the open porosity of the 3D srGO sorbents significantly contributes to the physical loading of oils and organic solvents on the hydrophilic surface. Therefore, this study provides insight into the absorption behavior of highly macroporous graphene-based macrostructures and hence paves the way to development of promising next-generation sorbents for removal of oils and organic solvent pollutants.참고 자료
없음"Carbon Letters"의 다른 논문
- High-performance asymmetric supercapacitors based on po..6페이지
- Structural and preliminary electrochemical characterist..4페이지
- Pore structure control of activated carbon fiber for CO..4페이지
- Comparative study on various sponges as substrates for ..5페이지
- Enhancement of reflectance of densified vertically alig..4페이지
- Investigation of carbon dioxide adsorption by nitrogen-..5페이지
- Cellulose-based carbon fibers prepared using electron-b..6페이지
- Cu²⁺ ion reduction in wastewater over RDF-derived char7페이지
- Comparative electrochemical study of sulphonated polysu..6페이지
- Atmospheric chemical vapor deposition of graphene on mo..6페이지