Enhanced Photocatalytic Degradation of Methylene Blue Using Ti-Doped ZnO Nanoparticles Synthesized by Rapid Combustion

Wongrerkdee, Sutthipoj; Wongrerkdee, Sawitree; Boonruang, Chatdanai; Sujinnapram, Supphadate

doi:10.3390/toxics11010033

Cited by 17 publications

(11 citation statements)

References 34 publications

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“…The appeared additional peak at 2θ~23.5° for ZnO combustion can refer to the orthorhombic phase of Zn(OH) 2 (JCPDS no. 01-071-2215) caused by the incomplete reaction [ 11 ]. The XRD peaks for ZnO precipitation were narrower than those for ZnO combustion, indicating that the crystal size of ZnO precipitation is larger than that of the ZnO combustion.…”

Section: Resultsmentioning

confidence: 99%

“…The peaks at 490 cm −1 contributed to the ZnO structure, due to the Zn-O vibration [ 33 ]. The peaks at 819 and 1647 cm −1 corresponded to C=O stretching [ 11 ]. The peaks at 1320 and 1435 cm −1 corresponded to C-O stretching and C-H blending, respectively [ 11 ].…”

Section: Resultsmentioning

confidence: 99%

“…The peaks at 819 and 1647 cm −1 corresponded to C=O stretching [ 11 ]. The peaks at 1320 and 1435 cm −1 corresponded to C-O stretching and C-H blending, respectively [ 11 ]. The peaks at 3391 and 3497 cm −1 were assigned to the O-H stretching.…”

Section: Resultsmentioning

confidence: 99%

“…The obtained product was then calcined at 550 °C for 6 h and ground again to obtain “ZnO precipitation”. For the combustion process, a 1 M aqueous solution of Zn(NO 3 ) 2 ·6H 2 O was prepared by dissolving the compound in 20 mL of ethylene glycol (EG) and stirring for 1 h at room temperature [ 11 ]. The resulting aqueous solution was then heated to 350 °C for 20 min on a hotplate.…”

Section: Methodsmentioning

confidence: 99%

“…Among these, ZnO is a well-known multifunctional-semiconductor material that has been widely investigated for its usage as a photocatalyst [ 7 ] because of its good photocatalytic activity, low-cost material, and non-toxicity [ 8 , 9 , 10 ]. Importantly, suitable synthesis methods have been studied, such as microwave synthesis, laser-ablation, hydrothermal, sol-gel, precipitation, and combustion [ 11 , 12 , 13 , 14 , 15 ].…”

Section: Introductionmentioning

confidence: 99%

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Comparison of ZnO Nanoparticles Prepared by Precipitation and Combustion for UV and Sunlight-Driven Photocatalytic Degradation of Methylene Blue

Krobthong

Rungsawang

Wongrerkdee

2023

Toxics

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ZnO nanoparticles (NPs) were comparatively synthesized via precipitation and combustion techniques. The ZnO NPs synthesized via precipitation and combustion exhibited similar polycrystalline hexagonal wurtzite structures. The large crystal sizes of ZnO NPs were obtained from the ZnO precipitation in comparison with those from the ZnO combustion, while the particle sizes were in the same range. The functional analysis implied that the ZnO structures had surface defects. Moreover, absorbance measurement showed the same absorbance range in ultraviolet light. In the photocatalytic degradation of methylene blue, ZnO precipitation exhibited higher degradation performance than ZnO combustion. This was attributed to the larger crystal sizes of ZnO NPs, which provided an enduring carrier movement at semiconductor surfaces and reduced electron-hole recombination. Thus, the crystallinity of ZnO NPs can be considered an important factor in photocatalytic activity. Furthermore, precipitation is an interesting synthesizing method for preparing ZnO NPs with large crystal sizes.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Comparison of ZnO Nanoparticles Prepared by Precipitation and Combustion for UV and Sunlight-Driven Photocatalytic Degradation of Methylene Blue

Krobthong

Rungsawang

Wongrerkdee

2023

Toxics

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Photocatalytic activity of co‐doped NPs based on ZnO as a new class of anti‐microbial agents: Synthesis, characterization, kinetics, isotherm, and in silico molecular docking simulation

Basseem,

Emam,

Kamal

et al. 2023

Applied Organom Chemis

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This work effectively synthesized pure ZnO (PZ) and the co‐doped ZnO as Sm‐La CDZ NPs, La‐Sr CDZ NPs, and Sm‐Sr CDZ NPs using a hydrothermal technique. To characterize synthetic nanomaterials used, several techniques, including X‐ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), Raman spectra, ultraviolet and visible (UV/Vis), photoluminescence (PL), scanning electron microscopy (SEM), and graphs by energy dispersive X‐ray spectroscopy (XPS), Zeta potential, point of (pHpzc), and specific surface areas. Furthermore, the XRD, SEM, and TEM confirmed the hexagonal crystalline structure. However, XPS and EDX showed that Sm3+, La3+, and Sr2+ ions integrated into the ZnO lattice. The UV‐estimated band gaps increased in the co‐doped ZnO; BET surface areas declined. The Zeta potential proved the positivity surface charge of nanomaterials. Consequently, they utilized it to investigate the breakdown of reactive red 43 (RR43). The degradation percentages for PZ, Sm‐La CDZ NPs, La‐Sr CDZ NPs, and Sm‐Sr CDZ NPs were 72.88%, 82.63%, 87.08%, and 91.31%, respectively. According to the results, the Sm‐Sr CDZ NPs exhibit high photocatalytic activity. In addition, the pseudo‐first‐order kinetic model and Langmuir model were a better fit. The photocatalytic nanomaterials were also recyclable, which added to their stability. The prepared nanoparticles were evaluated against four bacterial strains and two fungal pathogenic, and the result exhibited a broad spectrum against tested strains. The co‐doped NPs revealed MIC values ranging between1.95 and 62.5 μg/mL and MBC values of (31.3–250 μg/mL) compared with PZ (MIC = 7.81–62.5 μg/mL and MBC = 31.3–250 μg/mL) against bacterial strains. Surprisingly, most of these NPs expressed bacteriocidal and fungicidal potential. In silico molecular docking simulation suggested that the antibacterial activity may be related to the inhibition of DNA gyrase, cell wall synthesis (Upps and Fos A), and biofilm activity (PqsR).

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Surfactant‐Mediated Electrochemical Precipitation of ZnO Nanospheres for Adsorption of Eosin Yellow & Rhodamine B Dyes

Biswal,

Acharya,

Panda

et al. 2023

ChemistrySelect

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A simple electrochemical technique was used to synthesise zinc oxide (ZO) nanospheres and their in‐situ modification by a two‐step route of electrochemical precipitation with subsequent calcination. The ZO sample has been employed as an adsorbent for the removal of toxic dyes from their solutions. The electrochemical precipitation of zinc hydroxide (ZH) was carried out in a zinc nitrate bath at ~pH 4. The optimised concentration of 40 g dm−3 is used for the synthesis of modified zinc oxide (MZO) in the presence of the surfactant TEAB. XRD analysis confirms the formation of the heterostructure ZO. The field‐emission scanning electron microscopy (FESEM) images support the formation of hierarchical nanostructures with interconnected nanospheres in the presence of surfactant TEAB, which was confirmed by a high‐resolution transmission electron microscopy (HRTEM) study. The porous nature of ZO and MZO was established by the N2 adsorption‐desorption studies. The MZO sample showed ~99 % adsorption efficiency at an optimum dose of 0.09 g/20 mL of the 100 mg dm−3 Eosin Yellow dye solution within 120 min. However, the same sample showed 96 % adsorption efficiency at an optimum dose of 0.05 g/20 mL of the 100 mg dm−3 Rhodamine‐B dye solution within 120 min.

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Enhanced Photocatalytic Degradation of Methylene Blue Using Ti-Doped ZnO Nanoparticles Synthesized by Rapid Combustion

Cited by 17 publications

References 34 publications

Comparison of ZnO Nanoparticles Prepared by Precipitation and Combustion for UV and Sunlight-Driven Photocatalytic Degradation of Methylene Blue

Comparison of ZnO Nanoparticles Prepared by Precipitation and Combustion for UV and Sunlight-Driven Photocatalytic Degradation of Methylene Blue

Photocatalytic activity of co‐doped NPs based on ZnO as a new class of anti‐microbial agents: Synthesis, characterization, kinetics, isotherm, and in silico molecular docking simulation

Surfactant‐Mediated Electrochemical Precipitation of ZnO Nanospheres for Adsorption of Eosin Yellow & Rhodamine B Dyes

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