首先采用Hummers法制备了氧化石墨烯(GO),反应体系为浓硫酸加硝酸钠,高锰酸钾为氧化剂,反应过程可分低温(4℃以下反应2h)、中温(38℃反应2h)和高温(98℃反应2h)3个阶段,将4g石墨经过强酸氧化得到氧化石墨烯(GO)。以制备的GO为结构单元,采用水热合成法将GO与硫化铜(CuS)进行复合,并以聚乙烯吡咯烷酮(PVP)为稳定剂来制备CuS/GO复合材料。制得的CuS/GO复合材料,为薄片结构单元叠加而成,形貌类似花瓣,大小均一,尺寸为5μm,具有较好的分散性,没有出现团聚现象。
First,GO was prepared by Hummers method.The reaction system consists of concentrated sulfuric acid plus sodium nitrate and potassium permanganate as oxidant.The reaction process can be divided into three stages:low temperature (reaction for 2 hours under 4℃),medium temperature (reaction for 2 hours at 38℃) and high temperature (reaction for 2 hours under 98℃).4 g graphite was oxidized by strong acid to get GO.The prepared GO was used as the structural unit,GO and Cu sulfide (CuS) were compounded by hydrothermal method.The CuS/GO composite was prepared with polyethylene pyrrolidone (PVP) as stabilizer.The CuS/GO composite was superimposed by lamellar structural unit,the morphology was similar to petals,the size of the flat,the size was 5μm.It had good dispersion,there was no reunion.
[1] 郭娟.基于石墨烯的纳米复合材料的制备及性能研究[D].上海:复旦大学,2012.
[2] 周君.石墨烯-超分子纳米复合材料的制备及其应用[D].扬州:扬州大学,2014.
[3] 杨睿燕.石墨烯负载纳米银复合材料的制备及催化性能研究[J].科技创新导报,2016,13(23):54-56.
[4] 裴久阳,常艺,周苏生,等.液相剥离宏量制备石墨烯研究进展[J].化工新型材料,2018,46(5):1-5.
[5] 刘慧萍.基于石墨烯的电化学酶传感器的制备及传感性能研究:[D].长沙:湖南大学,2014.
[6] 杨旭宇,王贤保,李静.氧化石墨烯的可控还原及结构表征[J].高等学校化学学报,2012,9(33):1902-1907.
[7] 许士才.石墨烯的制备、表征及光电性质应用研究[D].济南:山东师范大学,2014.
[8] Bai G M,Dai H X,Deng J,et al.Porous NiO nanoflowers and nanourchins:highly active catalysts for toluene combustion[J].Catalysis Communications,2012,27(19):148-153.
[9] Gao Q,Zeng W,Miao R.Synthesis of multifarious hierarchical flower-like NiO and their gas-sensing properties[J].Journal of Materials Science Materials in Electronics,2016,27(9):9410-9416.
[10] Yang F C,Guo Z G.Engineering NiO sensitive materials and its ultra-selective detection of benzaldehyde[J].Journal of Colloid & Interface Science,2016,467:192-202.
[11] Miao R,Zeng W,Gao Q.SDS-assisted hydrothermal synthesis of NiO flake-flower architectures with enhanced gas-sensing properties[J].Applied Surface Science,2016,384:304-310.
[12] Feng C,Kou X,Chen B,et al.One-pot synthesis of In doped NiO nanofibers and their gas sensing properties[J].Sensors & Actuators B Chemical,2017,253:584-591.
[13] Lu Y,Ma Y H,Ma S Y,et al.Curly porous NiO nanosheets with enhanced gas-sensing properties[J].Materials Letters,2017,190:252-255.
[14] Deng X,Zhang L,Guo J,et al.ZnO enhanced NiO-based gas sensors towards ethanol[J].Materials Research Bulletin,2017,90:170-174.
[15] Wang X F,Ma W,Jiang F,et al.Prussian blue analogue derived porous NiFe2O4,nanocubes for low-concentration acetone sensing at low working temperature[J].Chemical Engineering Journal,2018,338:504-512.
[16] 王金兴,于连香,王浩铭,等.Ce掺杂InO纳米纤维的制备及其三乙胺气敏性能[J].物理化学学报,2010,26(11):3101-3105.
[17] Wang C,Cheng X Y,Zhou X,et al.Hierarchical-Fe2O3/NiO composites with a hollow structure for a gas sensor[J].ACS Applied Materials & Interfaces,2014,6:12031-12037.
[18] Balamurugan C,Maheswari A R,Lee D W.Structural optical,and selective ethanol sensing properties of p-type semiconducting CoNb2O6 nanopowder[J].Sensors & Actuators B Chemical,2014,205:289-297.
[19] Tan W H,Tan J F,Fan L R,et al.Fe2O3-loaded NiO nanosheets for fast response/recovery and high response gas sensor[J].Sensors & Actuators B Chemical,2017,256:282-293.
[20] 曾文,林志东,高俊杰.金属离子掺杂纳米SnO2材料的气敏性能及掺杂机理[J].纳米技术与精密工程,2008,6(3):174-179.
[21] Khorshidi G,Behzad M,Jahromi H S,et al.Influence of metal (W,Pd)-doping on gas sensing properties of the NiO flower-like thin films for o-xylene detection[J].Journal of Alloys & Compounds,2018,737:122-129.
基金资助
“十三五”宁夏回族自治区优势特色学科(化学工艺)建设项目(宁教高[2015]110号);宁夏回族自治区能源化学工程重点专业子项目(宁教高[2016]98号);银川能源学院校级科研项目(2016-KY-Y-03)
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