Photocatalytic performance assessment of GO and Ag co-synthesized TiO2 nanocomposite for the removal of methyl orange dye under solar irradiation

Al-Mamun, Md. Rashid; Karim, Md. Nafiul; Nitun, Naufida Afroj; Kader, S.M. Abdul; Islam, Md. Shahinoor; Khan, M. Z. H.

doi:10.1016/j.eti.2021.101537

Cited by 55 publications

(19 citation statements)

References 48 publications

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“…Figure 3 shows the FTIR spectra for TiO 2 , cellulose, 0.05 cellulose/TiO 2 , 0.05 Ag/TiO 2 , and cellulose/Ag/TiO 2 . The broad peak between 400 cm −1 and 1000 cm −1 found in the pure TiO 2 and TiO 2 -based samples was due to the stretching vibrations of Ti–O, Ti–O–C, and Ti–O–Ti bonds in the TiO 2 lattice structure [ 37 ]. This implied the formation of Ti-OH bonds in all these samples.…”

Section: Resultsmentioning

confidence: 99%

Role of Oil Palm Empty Fruit Bunch-Derived Cellulose in Improving the Sonocatalytic Activity of Silver-Doped Titanium Dioxide

et al. 2021

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In this study, a novel cellulose/Ag/TiO2 nanocomposite was successfully synthesized via the hydrothermal method. The cellulose extracted from oil palm empty fruit bunch (OPEFB) could address the disposal issue created by OPEFB biomass. Characterization studies such as FESEM, EDX, HRTEM, XRD, FTIR, UV–Vis DRS, PL, XPS, and surface analysis were conducted. It was observed that the incorporation of cellulose could hinder the agglomeration, reduce the band gap energy to 3 eV, increase the specific surface area to 150.22 m3/g, and lower the recombination rate of the generated electron-hole pairs compared to Ag/TiO2 nanoparticles. The excellent properties enhance the sonocatalytic degradation efficiency of 10 mg/L Congo red (up to 81.3% after 10 min ultrasonic irradiation) in the presence of 0.5 g/L cellulose/Ag/TiO2 at 24 kHz and 280 W. The improvement of catalytic activity was due to the surface plasmon resonance effect of Ag and numerous hydroxyl groups on cellulose that capture the holes, which delay the recombination rate of the charge carriers in TiO2. This study demonstrated an alternative approach in the development of an efficient sonocatalyst for the sonocatalytic degradation of Congo red.

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Section: Resultsmentioning

confidence: 99%

Role of Oil Palm Empty Fruit Bunch-Derived Cellulose in Improving the Sonocatalytic Activity of Silver-Doped Titanium Dioxide

et al. 2021

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“…on contact. 1 Metal oxide semiconductor coatings are excellent materials to obtain self-cleaning surfaces 2,3 due to their photocatalytic 4,5 and antimicrobial 6 properties. These properties are also useful for wastewater remediation or cosmetics and skin care products.…”

Section: Introductionmentioning

confidence: 99%

Development of photocatalysts based on TiO₂ films with embedded Ag nanoparticles

Roldán

Porta

Durán

et al. 2022

Int J of Appl Glass Sci

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In this work, the synthesis, characterization, and study of the photocatalytic activity of polycrystalline TiO 2 coatings with embedded Ag nanoparticles (Ag-TiO 2 ) were presented. In particular, the TiO 2 and Ag-TiO 2 coatings were developed using a simple and improved sol-gel technique. Very stable TiO 2 sols containing Ag nanoparticles were prepared and deposited by dip-coating process onto glass substrates obtaining homogeneous and transparent thin films. The well-distribution of silver nanoparticles into the TiO 2 sol allows TiO 2 coatings with Ag nanoparticles distributed throughout the volume of the material to be obtained. A significant improvement of the photocatalytic activity was observed for the Ag-TiO 2 coatings. The photocatalytic mechanism implicated in the dye degradation (methyl orange) by hydroxyl (•OH) and superoxide (•O 2 -) radicals was studied using several scavengers. Thus, it is concluded that the addition of Ag nanoparticles does not modify the mechanisms involved in the dye degradation, evidencing the good stability of the photocatalyst.

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“…e majority of these dyes represent serious environmental problems through carcinogenic substance accumulation and discharge of toxic elements [3]. In addition, trace amounts of dyes in water may be able to induce allergic dermatitis and cutaneous irritation [4,5]. ere are three types of dyes: anionic, cationic, and nonionic.…”

Section: Introductionmentioning

confidence: 99%

“…Anionic dyes are classified as direct, acid, and reactive dyes, whereas cationic dyes can be considered basic dyes [6]. Recently, significant interest has centred on the elimination of dyes from wastewater due to their resistance to biodegradation and their hazardous nature [4]. e high toxicity and solubility of these pollutants require the use of various processes for their removal, such as electrochemical treatment [7], chemical oxidation [8], photocatalysis [9], and adsorption [10].…”

Section: Introductionmentioning

confidence: 99%

Experimental Design Analysis of Murexide Dye Removal by Carbon Produced from Waste Biomass Material

Dhahri

Guizani

Yılmaz

et al. 2022

Journal of Chemistry

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The aim of this work is to investigate the adsorption of an anionic dye, the Murexide (MX) present in aqueous solution, on activated carbon, derived from prickly pear seed cake biomass after bio-oil extraction. The obtained adsorbent used was characterized by Bohem titration, pH of point of zero charge (pHPZC), FTIR spectroscopy, Brunauer–Emmett–Teller surface area (SBET), and scanning electron microscopy (SEM). The different experimental parameters of the adsorption process, such as temperature, contact time, initial dye concentration, and adsorbent dose, were studied. For the optimization of the process, the effects of these parameters were investigated using the full factorial experimental design methodology. Design Expert 11.1.2.0 Trial software was used for generating the statistical experimental design and analysing the observed data. Langmuir and Freundlich’s adsorption models were employed to provide a description of the equilibrium isotherm. The adsorption process was found to obey Langmuir, which indicates that the Murexide had formed a monolayer onto activated carbon. Furthermore, according to the regression coefficients, it was observed that the kinetic adsorption data can fit better by the pseudo-second-order model compared to the first-order Lagergren’s model. The thermodynamic studies indicated that the adsorption of Murexide occurs in a spontaneous and exothermic process. The regeneration process of the exhausted adsorbent was studied to assess the economic and operational feasibility. According to the obtained findings, it is proposed that the activated carbon prepared from prickly pear seed cake retains a high potential for Murexide removal and is suitable for repetitive usage.

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Photocatalytic performance assessment of GO and Ag co-synthesized TiO2 nanocomposite for the removal of methyl orange dye under solar irradiation

Cited by 55 publications

References 48 publications

Role of Oil Palm Empty Fruit Bunch-Derived Cellulose in Improving the Sonocatalytic Activity of Silver-Doped Titanium Dioxide

Role of Oil Palm Empty Fruit Bunch-Derived Cellulose in Improving the Sonocatalytic Activity of Silver-Doped Titanium Dioxide

Development of photocatalysts based on TiO₂ films with embedded Ag nanoparticles

Experimental Design Analysis of Murexide Dye Removal by Carbon Produced from Waste Biomass Material

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Photocatalytic performance assessment of GO and Ag co-synthesized TiO2 nanocomposite for the removal of methyl orange dye under solar irradiation

Cited by 55 publications

References 48 publications

Role of Oil Palm Empty Fruit Bunch-Derived Cellulose in Improving the Sonocatalytic Activity of Silver-Doped Titanium Dioxide

Role of Oil Palm Empty Fruit Bunch-Derived Cellulose in Improving the Sonocatalytic Activity of Silver-Doped Titanium Dioxide

Development of photocatalysts based on TiO2 films with embedded Ag nanoparticles

Experimental Design Analysis of Murexide Dye Removal by Carbon Produced from Waste Biomass Material

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Development of photocatalysts based on TiO₂ films with embedded Ag nanoparticles