Photocatalytic Performance of SiO2/CNOs/TiO2 to Accelerate the Degradation of Rhodamine B under Visible Light

Zhang, Weike; Zhang, Yanrong; Yang, Kai; Yang, Yanqing; Jia, Jia; Guo, Lijun

doi:10.3390/nano9121671

Cited by 29 publications

(11 citation statements)

References 51 publications

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“…Above 844 0 C the weight became stable. The residual was dominated by SiO2 also reported by [29]. This result indicated the thermal stability of catalyst was quite good.…”

Section: Chemical Analysis Of the Catalysts Using Xrfsupporting

confidence: 75%

Photocatalytic Degradation of Methylene Blue From Aqueous Solution Using Base Modified Termite Soil Under Uv Light Irradiation

Madaki¹,

Ibrahim²,

Ekwumemgbo³

et al. 2022

JCSN

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Photocatalysis is an effective treatment method for removal of toxic pollutants from industrial wastewaters. Sodium hydroxide was used to modified termite mound soil obtained from Ahmadu Bello University Zaria, Kaduna State, Nigeria. The soil was washed with deionized water and placed in an oven set at 60oC for 6 hrs before crushing with an aggregate impact crusher, sieved with 0.075 m mesh pore size. The sieved soil sample was tagged as unmodified-TMS (termite mound soil). The soil sample was modified using sodium hydroxide (NaOH) at different concentrations (5 %, 10 %, 15 %, and 20 % W/V). The modified and unmodified-TMS catalysts were characterized using scanning electron microscope (SEM), transmission electron microscope (TEM), X-ray fluorescence (XRF), Electron diffractive X-ray (EDX), Brunauer–Emmett–Teller (BET), Fourier transform infrared (FTIR), thermogravimetric analyses (TGA), and Selected area electron diffraction (SAED), The photocatalytic activity of the unmodified-TMS, 5 % NaOH, 10 % TMS-NaOH, 15 % TMS-NaOH, and 20 % TMS-NaOH, were assessed by testing the degradation rate of Methylene Blue under ultraviolet light irradiation. The results indicated that the samples exhibited the best photocatalytic activity at optimum parameters of catalyst dosage 2.5 g /L. pH 9 and 125 mg/L concentration of MB this is evidenced by the highest methylene degradation rate of (74 %). The photocatalytic degradation of the Methylene blue dye was found to obey first-order kinetics.

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“…Above 844 0 C the weight became stable. The residual was dominated by SiO2 also reported by [29]. This result indicated the thermal stability of catalyst was quite good.…”

Section: Chemical Analysis Of the Catalysts Using Xrfsupporting

confidence: 75%

Photocatalytic Degradation of Methylene Blue From Aqueous Solution Using Base Modified Termite Soil Under Uv Light Irradiation

Madaki¹,

Ibrahim²,

Ekwumemgbo³

et al. 2022

JCSN

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“…To demonstrate the typical peaks of the products, IR spectra of pure TiO 2 and pTh-1 samples were examined, and the ndings are shown in Supplementary Materials Figure S3. FT-IR spectra of TiO 2 had three major absorption peaks can be recognized between 3435 and 1630 cm − 1 due to OH groups (Zhang et al, 2019;Praveen et al, 2014). Some of the distinctive peaks given to pTh are faint in the composite, possibly due to overlap with strong peaks ascribed to TiO 2 .…”

Section: Synthesis and Characterization Of Pth-tio 2 Nanocompositesmentioning

confidence: 99%

Sorption-photocatalysis of structurally distinct pesticides using polythiophene/TiO2 composites: Kinetics, equilibrium, reusability and operational economics

Moradeeya

Madhava

Sharma

et al. 2022

Preprint

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An integrated process involving adsorption and photocatalysis are utilized for the breakdown of three different pesticides such as 2,4-D, 4-CPA and TCP. Photo-catalysts were fabricated using polythiophene supported TiO2 composites and utilized for the pesticides degradation under UV light irradiation. The synthesized materials were characterized for elemental, microscopic, spectroscopic and spectrophotometric properties. The outcome shows that polythiophene supported titanium dioxide systems can successfully facilitate the breakdown of pesticides under UV irradiation. The photocatalytic effectiveness of the TiO2 catalyst was significantly improved by the addition of polythiophene. Maximum amount of adsorption capacity for 2,4-D, 4-CPA and TCP were 8.18, 6.333, and 9.681 mg/g by pTh-1. The modified version of the Langmuir-Hinshelwood (L-H) model explained the inter-relationship between the adsorption and photodegradation. Results explained that the pTh-1 catalyzed photodegradation of 4-CPA, TCP and 2,4-D exists the surface reaction which was rate-limiting. Langmuir- Hinshelwood and electrical energy per order (EEO) model provided good fit with batch-mode experiments. Furthermore, these models were successful in elucidating the mechanisms of photocatalytic degradation when pTh-1 was available in the reaction mixture.

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“…Carbon materials (activated carbon, graphene, carbon nanotubes, etc.) have been used in the field of photocatalysis, in which it can improve the photocatalytic activity (Aqeel et al., 2019; X. Wang et al., 2016; W. Zhang et al., 2019).…”

Section: Introductionmentioning

confidence: 99%

Photocatalytic degradation of Rhodamine‐B dye using composite prepared from drinking water treatment sludge and nano TiO₂

Rashed

Taher

Fadlalla³

2021

Environmental Quality Mgmt

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In this study, composite Sludge adsorbent (ASN)/TiO2 was prepared from the drinking water treatment sludge ASN (activated with nitric acid) and nanoparticle TiO2 by the sol‐gel method, followed by using it to remove Rhodamine‐B (RB) dye from polluted water. The prepared composite was characterized by transmission electron microscopy, X‐ray fluorescence spectrometry, X‐ray diffraction, and surface area N2‐adsorption/desorption analysis. Photocatalytic degradation of RB dye was investigated by UV and UV/hydrogen peroxide (H2O2) irradiation. Parameters such as composite dosage, initial dye concentration, UV irradiation time, and solution pH were applied to obtain the optimum conditions for high RB dye degradation. The results showed that the highest RB dye degradation (96.7%) was using a 2:1 ratio of ASN/TiO2. High degradation of dye was achieved within 4 h at pH 7, 50 ppm dye concentration, and 0.125 g/50 ml composite dose. The maximum degradation of RB dye using the prepared composite under UV irradiation with H2O2 (99.85%) was higher than that with UV irradiation only (96.85%). The rate of the dye photocatalytic degradation followed the first‐order kinetics.

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Photocatalytic Performance of SiO2/CNOs/TiO2 to Accelerate the Degradation of Rhodamine B under Visible Light

Cited by 29 publications

References 51 publications

Photocatalytic Degradation of Methylene Blue From Aqueous Solution Using Base Modified Termite Soil Under Uv Light Irradiation

Photocatalytic Degradation of Methylene Blue From Aqueous Solution Using Base Modified Termite Soil Under Uv Light Irradiation

Sorption-photocatalysis of structurally distinct pesticides using polythiophene/TiO2 composites: Kinetics, equilibrium, reusability and operational economics

Photocatalytic degradation of Rhodamine‐B dye using composite prepared from drinking water treatment sludge and nano TiO₂

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Photocatalytic Performance of SiO2/CNOs/TiO2 to Accelerate the Degradation of Rhodamine B under Visible Light

Cited by 29 publications

References 51 publications

Photocatalytic Degradation of Methylene Blue From Aqueous Solution Using Base Modified Termite Soil Under Uv Light Irradiation

Photocatalytic Degradation of Methylene Blue From Aqueous Solution Using Base Modified Termite Soil Under Uv Light Irradiation

Sorption-photocatalysis of structurally distinct pesticides using polythiophene/TiO2 composites: Kinetics, equilibrium, reusability and operational economics

Photocatalytic degradation of Rhodamine‐B dye using composite prepared from drinking water treatment sludge and nano TiO2

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Photocatalytic degradation of Rhodamine‐B dye using composite prepared from drinking water treatment sludge and nano TiO₂