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氧化石墨烯 1

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Preparing graphene from anode graphite of spent lithium-ion batteries

Wenxuan Zhang, Zhanpeng Liu, Jing Xia, Feng Li, Wenzhi He, Guangming Li, Juwen Huang

《环境科学与工程前沿（英文）》 2017年第11卷第5期 doi: 10.1007/s11783-017-0993-8

摘要： With extensive use of lithium ion batteries (LIBs), amounts of LIBs were discarded, giving rise to growth of resources demand and environmental risk. In view of wide usage of natural graphite and the high content (12%–21%) of anode graphite in spent LIBs, recycling anode graphite from spent LIBs cannot only alleviate the shortage of natural graphite, but also promote the sustainable development of related industries. After calcined at 600°Cfor 1 h to remove organic substances, anode graphite was used to prepare graphene by oxidation-reduction method. Effect of pH and N2H4·H2O amount on reduction of graphite oxide were probed. Structure of graphite, graphite oxide and graphene were characterized by XRD, Raman and FTIR. Graphite oxide could be completely reduced to graphene at pH 11 and 0.25 mL N2H4·H2O. Due to the presence of some oxygen-containing groups and structure defects in anode graphite, concentrated H2SO4 and KMnO4 consumptions were 40% and around 28.6% less than graphene preparation from natural graphite, respectively.

关键词： Spent LIBs Graphite Graphite oxide Grapheme

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含氧化石墨烯混合基质反渗透复合膜的制备及性能研究

芦瑛,赵海洋,张林,侯立安

《中国工程科学》 2014年第16卷第7期页码 84-88

摘要：

以间苯二胺(MPD)为水相单体、均苯三甲酰氯(TMC)为油相单体，氧化石墨烯（GO）作为水相添加物，采用界面聚合法，制备了GO-PA（聚酰胺）/PSF（聚砜）混合基质反渗透复合膜。采用扫描电子显微镜表征了膜形貌，考察了该膜对氯化钠的截留性能及耐氯性。结果表明，聚酰胺反渗透膜填充氧化石墨烯后，其分离性能优于聚酰胺膜，且具有较好的耐氯性。随着氧化石墨烯含量的增加，膜的通量增大，当添加量为0.005 %时，膜具有最大通量，为63 L/(m²·h)。

关键词：氧化石墨烯聚酰胺混合基质膜反渗透耐氯性