PMID- 27725757 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20180404 LR - 20181113 IS - 2045-2322 (Electronic) IS - 2045-2322 (Linking) VI - 6 DP - 2016 Oct 11 TI - Hydrophilic Graphene Preparation from Gallic Acid Modified Graphene Oxide in Magnesium Self-Propagating High Temperature Synthesis Process. PG - 35184 LID - 10.1038/srep35184 [doi] LID - 35184 AB - Hydrophilic graphene sheets were synthesized from a mixture of magnesium and gallic acid (GA) modified graphene oxide (GO) in a self-propagating high-temperature synthesis (SHS) process, and hydrophilic graphene sheets displayed the higher C/O ratio (16.36), outstanding conductivity (~88900 S/m) and excellent water-solubility. GO sheets were connected together by GA, and GA was captured to darn GO structure defects through the formation of hydrogen bonds and ester bonds. In SHS process, the most oxygen ions of GO reacted with magnesium to prevent the escape of carbon dioxide and carbon monoxide to from the structure defects associated with vacancies, and GA could take place the high-temperature carbonization, during which a large-area graphene sheets formed with a part of the structure defects being repaired. When only GO was reduced by magnesium in SHS process, and the reduced GO (rGO) exhibited the smaller sheets, the lower C/O ratio (15.26), the weaker conductivity (4200 S/m) and the poor water-solubility because rGO inevitably left behind carbon vacancies and topological defects. Therefore, the larger sheet, less edge defects and free structure defects associated with vacancies play a key role for graphene sheets good dispersion in water. FAU - Cao, Lei AU - Cao L AD - State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tianjin Polytechnic University, 300160 Tianjin, China. FAU - Li, Zhenhuan AU - Li Z AD - State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tianjin Polytechnic University, 300160 Tianjin, China. FAU - Su, Kunmei AU - Su K AD - State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tianjin Polytechnic University, 300160 Tianjin, China. FAU - Cheng, Bowen AU - Cheng B AD - State Key Laboratory of Separation Membranes and Membrane Processes, School of Materials Science and Engineering, Tianjin Polytechnic University, 300160 Tianjin, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20161011 PL - England TA - Sci Rep JT - Scientific reports JID - 101563288 PMC - PMC5057088 EDAT- 2016/10/12 06:00 MHDA- 2016/10/12 06:01 PMCR- 2016/10/11 CRDT- 2016/10/12 06:00 PHST- 2016/07/06 00:00 [received] PHST- 2016/09/26 00:00 [accepted] PHST- 2016/10/12 06:00 [entrez] PHST- 2016/10/12 06:00 [pubmed] PHST- 2016/10/12 06:01 [medline] PHST- 2016/10/11 00:00 [pmc-release] AID - srep35184 [pii] AID - 10.1038/srep35184 [doi] PST - epublish SO - Sci Rep. 2016 Oct 11;6:35184. doi: 10.1038/srep35184.