Nitrogen-doped carbon nanosheets from polyurethane foams and removal of Cr(VI)

• 영문명: Nitrogen-doped carbon nanosheets from polyurethane foams and removal of Cr(VI)
• 발행기관: 한국탄소학회
• 저자명: Jiaqi Duan,Baohua Zhang,Huailin Fan,Wenzhong Shen,Shijie Qu
• 간행물 정보: 『Carbon Letters』제22권, 60~69쪽, 전체 10쪽
• 주제분류: 자연과학 > 자연과학일반
• 파일형태: PDF
• 발행일자: 2017.04.01

영문 초록

Nitrogen-doped carbon nanosheets with a developed porous structure were prepared from polyurethane foams by hydrothermal carbonization following ZnCl2 chemical activation. Scanning electron microscopy, thermogravimetric analysis, Fourier transform infrared spectroscopy, solid state 13C nuclear magnetic resonance (NMR) spectra and X-ray photoelectron spectroscopy were used to characterize the nitrogen-doped carbon nanosheet structure and composition. The removal of Cr(VI) by the N-doped carbon nanosheets was investigated. The results showed that the maximum removal capacity for chromium of 188 mg/g was found at pH=2.0 with PHC-Z-3. pH had an important effect on Cr(VI) removal and the optimal pH was 2.0. Moreover, amino groups and carboxyl groups in the nitrogen-doped carbon nanosheet played important roles in Cr(VI) removal, and promoted the reduction of Cr(VI) to Cr(III).

목차

1. Introduction

2. Experimental

3. Results and Discussion

4. Conclusions

References

키워드

polyurethane forms,nitrogen-doped carbon nanosheet,Cr(VI) removal