Synthesis of zeolite-doped polyaniline composite for photocatalytic degradation of methylene blue from aqueous solution

Sodha, Veena; Koshti, Hardik; Gaur, Rama; Ahmad, Irfan; Bandopadhyay, Rajib; Shahabuddin, Syed

doi:10.1007/s11356-023-25556-x

Cited by 12 publications

(2 citation statements)

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“…The UV-DRS spectra (UV-Visible diffuse reflectance spectra) for the samples ZSM-5, GZ1 and GZ5 composite are shown in figure 1(c). To get the band-gap values, the UV-DRS spectra are plotted using the Tauc method as shown in figure 1(d) [17]. ZSM-5 being the wide band gap material presented band gap in the UV range, i.e.…”

Section: Drs Analysismentioning

confidence: 99%

“…Zeolites are porous, three-dimensional, crystalline materials which are great adsorbent materials for the removal of various pollutants including dyes and heavy metals. Among the all-removal techniques, photocatalysis is considered superior as it does not localise the pollutants, but it degrades the pollutant into smaller molecules [17]. Different metal (Cu, Fe, Ni, Ag)-based materials [11,[18][19][20][21][22][23][24] are well known semiconductors and are used for various photochemical applications.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis and application of ZSM-5/Graphene composite for photocatalytic degradation of industrial dyes

Sodha,

Bandyopadhyay,

Gaur

et al. 2024

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Various materials and technologies are being employed to address the concern of increased wastewater generation. In this work, the synthesis of ZSM-5 (Zeolite Socony Mobil-5) and graphene (GR) composite, their characterisation, and application for the removal of dyes are presented. Two composites of ZSM-5 and GR composites were prepared via the hydrothermal method by varying the loading amount of GR, i.e. 1% and 5%, and labelled as GZ1 and GZ5. The parent and composite materials were characterised using field emission scanning electron microscope (FE-SEM), x-ray diffraction (XRD), diffuse reflectance spectroscopy (DRS), x-ray photoelectrons spectroscopy (XPS), Raman, and Fourier transform infrared (FTIR). The materials were then employed for the photodegradation of methyl orange (MO) dye. The adsorption efficiencies for ZSM-5, GR, GZ1, and GZ5 were found as 0%, 17.8%, 0%, and 16% respectively. According to photodegradation results, the GZ1 composite exhibits the maximum degradation efficiency of 75.3% for 20 ppm of MO, within 180 min of light exposure. The scavenger studies were performed to evaluate the role of active oxygen species (AOS) in the photocatalysis mechanism. All studies were performed with the catalyst dosage of 0.5 mg ml−1. The degradation efficiencies for GR, GZ5, and Z5 were reported as 34.2%, 20.8%, and 17.5%, respectively. On increasing the irradiation time to 240 min, the degradation efficiency of GZ1 reached 92%. The removal efficiencies for MO (7 ppm) and methyl blue (5 ppm) in a 12-ppm dye mixture were observed to be 98% and 97.2% respectively within 180 min of light exposure with GZ1 composite.

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Section: Drs Analysismentioning

confidence: 99%