Photocatalytic properties of PbS/graphene oxide/polyaniline electrode for hydrogen generation

被引:89
作者
Shaban, Mohamed [1 ]
Rabia, Mohamed [1 ,2 ]
Abd El-Sayed, Asmaa M. [1 ]
Ahmed, Aya [1 ]
Sayed, Somaya [1 ]
机构
[1] Beni Suef Univ, Dept Phys, Nanophoton & Applicat NPA Lab, Fac Sci, Bani Suwayf 62514, Egypt
[2] Beni Suef Univ, Fac Sci, Chem Dept, Polymer Res Lab, Bani Suwayf 62514, Egypt
关键词
OPTICAL-PROPERTIES; GRAPHENE OXIDE; BAND-GAP; WATER; POLYANILINE; EFFICIENT; EVOLUTION; PBS; NI; NANOCOMPOSITES;
D O I
10.1038/s41598-017-14582-8
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
In this work, roll-graphene oxide (Ro-GO), polyaniline (PANI) nano/microparticles, and PbS nanoparticles were prepared by modified Hammer, oxidative polymerization, and chemical bath deposition methods, respectively. These nano/microstructures were characterized, optimized, and designed to form PbS/Ro-GO/PANI nano/microcomposite. Also, the ratios of PbS and Ro-GO were optimized, and the optimized composition of the used composite was 0.4 g PANI, 0.125 g Ro-GO, and 0.075 g PbS. The band gap values for PANI, PbS, Ro-GO, and PbS/Ro-GO/PANI rocomposite were 3, 1.13, 2.86, (1.16, 2) eV, respectively. Two photoelectrode assemblies, Au/PbS/Ro-GO/PANI and PbS/Ro-GO/PANI/ITO/glass were used for the photoelectrochemical (PEC) hydrogen generation. In the first assembly 45 nm-Au layer was sputtered on the surface of a disk of PbS/Ro-GO/PANI composite. For the second assembly, a disk of PbS/Ro-GO/PANI composite was glued on ITO glass using Ag-THF paste. The lifetime efficiency values were 64.2 and 43.4% for the first and second electrode for 2 h, respectively. Finally, the incident photon-to-current conversion efficiency (IPCE) and photon-to-current efficiency (ABPE) were calculated under monochromatic illumination conditions. The optimum IPCE efficiency at 390 nm was 9.4% and 16.17%, whereas ABPE % efficiency was 1.01% and 1.75% for Au/PbS/Ro-GO/PANI and PbS/Ro-GO/PANI/ITO/glass, respectively.
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页数:13
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