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Bifunctional electron conductive solid electrolyte and dye degrading photocatalyst from rGO-aminoalkane non-metallic origin
Journal of the Taiwan Institute of Chemical Engineers ( IF 5.5 ) Pub Date : 2020-07-20 , DOI: 10.1016/j.jtice.2020.06.019
Mohammad Razaul Karim , Mohammed M. Rahman , Abdullah M. Asiri

Tunable proton conductivity (PrN), electron conduction behavior (EnN) and UV light harvesting photocatalytic dye degradation performance (PDD) of reduced graphene oxide-aminoalkane (aminoalkanes = aminomethane (AM), aminoethane (AE) aminopropane (AP) and 2-methylpropylamine (AMP)). The rGO-AMP exhibited high PrN, EnN, and optimized PDD. The PrN of rGO-AMP was ≈10−4–10−3 S cm−1, which is of almost equal order of that for pristine GO. The EnN was around 1.68 μA. The PDD measured for methylene blue (MtB), followed the trend as rGO-AMP > rGO-AE > rGO-AM > rGO-AP > rGO. The formation of chemical bonds between aminoalkane and rGO are confirmed from IR spectra. The conversion of sp3 carbon domains into electron conductive sp2 centres were confirmed from the Raman shifts. Thermal analysis confirms the optimum amount of water adsorption by rGO-AMP. XPS spectra confirm the doping of pyrrolic N atom in rGO. The maximum flexibility of interlayer distance (InD) in rGO-AMP was identified by PXRD analysis. The InD played vital role for proton conduction and PDD. N doping results in the opening of bandgap and generation of water adsorbing sites. All these facts rolled for dual electron-proton conduction and PDD activities. The composites imply enormous possibility of graphene-based non-metallic hybrid catalysts.



中文翻译:

rGO-氨基链烷非金属来源的双功能电子导电固体电解质和染料降解光催化剂

还原氧化石墨烯-氨基烷烃(氨基烷烃=氨基甲烷(AM),氨基乙烷(AE)氨基丙烷(AP)和2-甲基丙胺)的可调质子电导率(PrN),电子传导行为(EnN)和紫外光收集光催化染料降解性能(PDD) (AMP))。rGO-AMP具有较高的PrN,EnN和优化的PDD。RGO-AMP的PRN是≈10 -4 -10 -3 小号厘米-1,这几乎是相等的顺序,对于原始GO的。EnN约为1.68μA。测量的PDD为亚甲基蓝(MtB),其趋势为rGO-AMP> rGO-AE> rGO-AM> rGO-AP> rGO。由IR光谱证实了氨基烷烃与rGO之间化学键的形成。sp 3碳畴向电子导电sp 2的转化拉曼频移证实了这些中心。热分析确定了rGO-AMP的最佳水吸附量。XPS光谱证实rGO中吡咯N原子的掺杂。通过PXRD分析确定了rGO-AMP中层间距离(InD)的最大灵活性。InD在质子传导和PDD中起着至关重要的作用。氮的掺杂导致带隙的打开和水吸附位点的产生。所有这些事实证明了双电子质子传导和PDD活性。该复合材料暗示了石墨烯基非金属杂化催化剂的巨大可能性。

更新日期:2020-08-27
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