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Enhanced NH3-Sensitivity of Reduced Graphene Oxide Modified by Tetra-α-Iso-Pentyloxymetallophthalocyanine Derivatives.

Li X, Wang B, Wang X, Zhou X, Chen Z, He C, Yu Z, Wu Y - Nanoscale Res Lett (2015)

Bottom Line: Three kinds of novel hybrid materials were prepared by noncovalent functionalized reduced graphene oxide (rGO) with tetra-α-iso-pentyloxyphthalocyanine copper (CuPc), tetra-α-iso-pentyloxyphthalocyanine nickel (NiPc) and tetra-α-iso-pentyloxyphthalocyanine lead (PbPc) and characterized by Fourier transform infrared spectroscopy (FT-IR), ultraviolet-visible spectroscopy (UV-vis), Raman spectra, X-ray photoelectron spectroscopy (XPS), transmission electron microscope (TEM), and atomic force microscope (AFM).The as-synthesized MPc/rGO hybrids show excellent NH3 gas-sensing performance with high response value and fast recovery time compared with bare rGO.The enhancement of the sensing response is mainly attributed to the synergism of gas adsorption of MPc to NH3 gas and conducting network of rGO with greater electron transfer efficiency.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, China. wangbin@hlju.edu.cn.

ABSTRACT
Three kinds of novel hybrid materials were prepared by noncovalent functionalized reduced graphene oxide (rGO) with tetra-α-iso-pentyloxyphthalocyanine copper (CuPc), tetra-α-iso-pentyloxyphthalocyanine nickel (NiPc) and tetra-α-iso-pentyloxyphthalocyanine lead (PbPc) and characterized by Fourier transform infrared spectroscopy (FT-IR), ultraviolet-visible spectroscopy (UV-vis), Raman spectra, X-ray photoelectron spectroscopy (XPS), transmission electron microscope (TEM), and atomic force microscope (AFM). The as-synthesized MPc/rGO hybrids show excellent NH3 gas-sensing performance with high response value and fast recovery time compared with bare rGO. The enhancement of the sensing response is mainly attributed to the synergism of gas adsorption of MPc to NH3 gas and conducting network of rGO with greater electron transfer efficiency. Strategies for combining the good properties of rGO and MPc derivatives will open new opportunities for preparing and designing highly efficient rGO chemiresistive gas-sensing hybrid materials for potential applications in gas sensor field.

No MeSH data available.


Related in: MedlinePlus

FT-IR spectra of (a) rGO, CuPc and CuPc/rGO hybrids; (b) rGO, NiPc and NiPc/rGO hybrids; (c) rGO, PbPc and PbPc/rGO hybrids
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Fig4: FT-IR spectra of (a) rGO, CuPc and CuPc/rGO hybrids; (b) rGO, NiPc and NiPc/rGO hybrids; (c) rGO, PbPc and PbPc/rGO hybrids

Mentions: The attachment of the small MPc molecules to rGO sheets was confirmed further by using FT-IR spectroscopy. Figure 4 shows the FT-IR spectra of rGO, MPc, and MPc/rGO hybrids. The typical peaks of rGO located at 3421 and 1068 cm−1, which correspond to the O–H stretching and vibration mode of absorbed water. As for the MPc/rGO hybrids, after hybridization, the characteristic peaks of MPc and rGO are found in MPc/rGO hybrids, such as CuPc/rGO hybrid, as shown in Fig. 4a. The characteristic peaks of CuPc derivatives can be found in hybrid material at 2936, 2863 (C–H stretching vibration), 1539, 1490, 1335 (stretching mode of benzene ring as well as C–N vibration), 1061, 1080 (C–O stretching vibration), and 742 cm−1 (–CH2CH2– in-plane vibration swing), which powerfully demonstrated that CuPc molecules had been successfully decorated on the surface of rGO. The characteristic peaks of NiPc and PbPc in NiPc/rGO and PbPc/rGO hybrids can also be observed in Fig. 4b, c respectively. The results indicate that noncovalent anchoring of MPc molecules onto the rGO sheets through π–π stacking was obtained.Fig. 4


Enhanced NH3-Sensitivity of Reduced Graphene Oxide Modified by Tetra-α-Iso-Pentyloxymetallophthalocyanine Derivatives.

Li X, Wang B, Wang X, Zhou X, Chen Z, He C, Yu Z, Wu Y - Nanoscale Res Lett (2015)

FT-IR spectra of (a) rGO, CuPc and CuPc/rGO hybrids; (b) rGO, NiPc and NiPc/rGO hybrids; (c) rGO, PbPc and PbPc/rGO hybrids
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

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getmorefigures.php?uid=PMC4582035&req=5

Fig4: FT-IR spectra of (a) rGO, CuPc and CuPc/rGO hybrids; (b) rGO, NiPc and NiPc/rGO hybrids; (c) rGO, PbPc and PbPc/rGO hybrids
Mentions: The attachment of the small MPc molecules to rGO sheets was confirmed further by using FT-IR spectroscopy. Figure 4 shows the FT-IR spectra of rGO, MPc, and MPc/rGO hybrids. The typical peaks of rGO located at 3421 and 1068 cm−1, which correspond to the O–H stretching and vibration mode of absorbed water. As for the MPc/rGO hybrids, after hybridization, the characteristic peaks of MPc and rGO are found in MPc/rGO hybrids, such as CuPc/rGO hybrid, as shown in Fig. 4a. The characteristic peaks of CuPc derivatives can be found in hybrid material at 2936, 2863 (C–H stretching vibration), 1539, 1490, 1335 (stretching mode of benzene ring as well as C–N vibration), 1061, 1080 (C–O stretching vibration), and 742 cm−1 (–CH2CH2– in-plane vibration swing), which powerfully demonstrated that CuPc molecules had been successfully decorated on the surface of rGO. The characteristic peaks of NiPc and PbPc in NiPc/rGO and PbPc/rGO hybrids can also be observed in Fig. 4b, c respectively. The results indicate that noncovalent anchoring of MPc molecules onto the rGO sheets through π–π stacking was obtained.Fig. 4

Bottom Line: Three kinds of novel hybrid materials were prepared by noncovalent functionalized reduced graphene oxide (rGO) with tetra-α-iso-pentyloxyphthalocyanine copper (CuPc), tetra-α-iso-pentyloxyphthalocyanine nickel (NiPc) and tetra-α-iso-pentyloxyphthalocyanine lead (PbPc) and characterized by Fourier transform infrared spectroscopy (FT-IR), ultraviolet-visible spectroscopy (UV-vis), Raman spectra, X-ray photoelectron spectroscopy (XPS), transmission electron microscope (TEM), and atomic force microscope (AFM).The as-synthesized MPc/rGO hybrids show excellent NH3 gas-sensing performance with high response value and fast recovery time compared with bare rGO.The enhancement of the sensing response is mainly attributed to the synergism of gas adsorption of MPc to NH3 gas and conducting network of rGO with greater electron transfer efficiency.

View Article: PubMed Central - PubMed

Affiliation: Key Laboratory of Functional Inorganic Material Chemistry, Ministry of Education, School of Chemistry and Materials Science, Heilongjiang University, Harbin, 150080, China. wangbin@hlju.edu.cn.

ABSTRACT
Three kinds of novel hybrid materials were prepared by noncovalent functionalized reduced graphene oxide (rGO) with tetra-α-iso-pentyloxyphthalocyanine copper (CuPc), tetra-α-iso-pentyloxyphthalocyanine nickel (NiPc) and tetra-α-iso-pentyloxyphthalocyanine lead (PbPc) and characterized by Fourier transform infrared spectroscopy (FT-IR), ultraviolet-visible spectroscopy (UV-vis), Raman spectra, X-ray photoelectron spectroscopy (XPS), transmission electron microscope (TEM), and atomic force microscope (AFM). The as-synthesized MPc/rGO hybrids show excellent NH3 gas-sensing performance with high response value and fast recovery time compared with bare rGO. The enhancement of the sensing response is mainly attributed to the synergism of gas adsorption of MPc to NH3 gas and conducting network of rGO with greater electron transfer efficiency. Strategies for combining the good properties of rGO and MPc derivatives will open new opportunities for preparing and designing highly efficient rGO chemiresistive gas-sensing hybrid materials for potential applications in gas sensor field.

No MeSH data available.


Related in: MedlinePlus