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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

The schematic interaction process for the preparation of MPc/rGO derivatives hybrids
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Fig1: The schematic interaction process for the preparation of MPc/rGO derivatives hybrids

Mentions: The MPc derivatives were already synthesized on the basis of an established procedure [19]. Flake graphite powder was purchased from Shenzhen Nanotech PortCo. Ltd. All other materials were obtained from Tianjin Fuyu Fine chemical Co., Ltd. and used without further purification. Double distilled deionized water was used with further purification by Millipore Milli-Q system. Graphene oxide (GO) was prepared using the modified Hummers method from graphite powder, which was described in our previous reports [20]. To prepare MPc/rGO hybrids, the hydrazine reduction of GO in the presence of MPc was adopted. The schematic interaction process for the preparation of MPc/rGO hybrids is illustrated in Fig. 1. Simply, the prepared GO was sonicated in the solvent (DMF: H2O = 9:1), then the MPc DMF solution was added in the above solvent. The mixture was sonicated for 2 h in the dark about and stirred 24 h. After that, hydrazine and ammonia water were added and stirred at 100 °C for 24 h. The solution was then filtrated and rinsed with CHCl2. Finally, the hybrid materials were dried in a vacuum for 24 h. As a comparison, hydrazine and ammonia water were added in the GO solution without MPc and stirred at 100 °C for 2 h. After washing with ethanol and H2O, the final product was collected and marked as rGO.Fig. 1


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)

The schematic interaction process for the preparation of MPc/rGO derivatives hybrids
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4582035&req=5

Fig1: The schematic interaction process for the preparation of MPc/rGO derivatives hybrids
Mentions: The MPc derivatives were already synthesized on the basis of an established procedure [19]. Flake graphite powder was purchased from Shenzhen Nanotech PortCo. Ltd. All other materials were obtained from Tianjin Fuyu Fine chemical Co., Ltd. and used without further purification. Double distilled deionized water was used with further purification by Millipore Milli-Q system. Graphene oxide (GO) was prepared using the modified Hummers method from graphite powder, which was described in our previous reports [20]. To prepare MPc/rGO hybrids, the hydrazine reduction of GO in the presence of MPc was adopted. The schematic interaction process for the preparation of MPc/rGO hybrids is illustrated in Fig. 1. Simply, the prepared GO was sonicated in the solvent (DMF: H2O = 9:1), then the MPc DMF solution was added in the above solvent. The mixture was sonicated for 2 h in the dark about and stirred 24 h. After that, hydrazine and ammonia water were added and stirred at 100 °C for 24 h. The solution was then filtrated and rinsed with CHCl2. Finally, the hybrid materials were dried in a vacuum for 24 h. As a comparison, hydrazine and ammonia water were added in the GO solution without MPc and stirred at 100 °C for 2 h. After washing with ethanol and H2O, the final product was collected and marked as rGO.Fig. 1

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