Acetic acid-assisted fabrication of hierarchical flower-like Bi2O3 for photocatalytic degradation of sulfamethoxazole and rhodamine B under solar irradiation

Bao, Yueping; Lim, Teik−Thye; Zhong, Ziyi; Wang, Rong; Hu, Xiao

doi:10.1016/j.jcis.2017.05.070

Cited by 48 publications

(17 citation statements)

References 65 publications

(64 reference statements)

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“…SMX has already been used to test the efficiency of a sunlight mediated process with titanium dioxide modified for instance with tungsten (WO 3 /TiO 2 ) [29], copper (Cu/TiO 2 ) [30,31], gold (Au/TiO 2 ), and silver (Ag/TiO 2 ) [31]. For this purpose also non-TiO 2 based catalysts were investigated, such as flower-like bismuth oxide (Bi 2 O 3 ) [32], cuprous oxide-reduced graphene oxide (Cu 2 O/rGO) [33], composites of silver orthophosphate with tungsten oxide (Ag 3 PO 4 /WO 3 ), [34] and many others.…”

Section: Sulfamethoxazole (Smx)mentioning

confidence: 99%

Solar Photocatalytic Degradation of Sulfamethoxazole by TiO2 Modified with Noble Metals

et al. 2019

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Application of solar photocatalysis for water treatment is intensively studied. In this work, we investigated TiO2 modified with platinum (Pt/TiO2) and palladium (Pd/TiO2) using sulfamethoxazole (SMX) as the model contaminant. We considered the following parameters: (i) level of TiO2 modification with Pt/Pd, (ii) initial concentration of photocatalysts, (iii) geographic location where processes were conducted, and (iv) natural water matrix. The catalysts characterized by SEM, EDX, DRS, and XRD techniques showed successful deposition of Pd and Pt atoms on TiO2 surface that enabled light absorption in the visible (Vis) range, and therefore caused efficient SMX removal in all tested conditions. A comparison of the rate constants of SMX degradation in various conditions revealed that modification with Pd gave better results than modification with Pt, which was explained by the better optical properties of Pd/TiO2. The removal of SMX was higher with Pd/TiO2 than with Pt/TiO2, independent of the modification level. In the experiments with the same modification level, similar rate constants were achieved when four times the lower concentration of Pd/TiO2 was used as compared with Pt/TiO2. Formation of four SMX transformation products was confirmed, in which both amine groups are involved in photocatalytic oxidation. No toxic effect of post-reaction solutions towards Lepidium sativum was observed.

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Section: Sulfamethoxazole (Smx)mentioning

confidence: 99%

Solar Photocatalytic Degradation of Sulfamethoxazole by TiO2 Modified with Noble Metals

et al. 2019

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“…6 shows nitrogen adsorption–desorption isotherms of Bi 2 O 3 nanosheet and commercial α‐Bi 2 O 3 particle. According to the IUPAC classification, the adsorption isotherm of a commercial α‐Bi 2 O 3 particle is type IV with a negligible hysteresis loop owing to its macroporous and non‐porous structure [13, 39]. On the other hand, the adsorption isotherm of the Bi 2 O 3 nanosheet belongs to type IV with an H3‐type hysteresis loop [40].…”

Section: Resultsmentioning

confidence: 99%

“…As we know, the morphology, size, and specific surface area are crucial to photocatalytic activity [12][13][14]. Up to now, many methods such as microwave irradiation [15], biomimetic method [16], chemical precipitation [17], solvent thermal method [18], femtosecond pulsed laser ablation in liquids [19,20], and surfactant-assistant method [21,22] have been employed to prepare α-Bi 2 O 3 with various morphologies, for instance, laminated structure [23], sphere [24], microrod [21] oblique prism-like structure [25], and flower-shaped superstructure [12].…”

Section: Introductionmentioning

confidence: 99%

Biotemplate preparation of Bi ₂ O ₃ nanosheet for enhanced photodegradation of methylene blue

Yang

Wang

Zhao

et al. 2019

Micro & Nano Letters

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Bi 2 O 3 nanosheet was synthesised using China rose petal as a biotemplate for the photodegradation of methylene blue under xenon lamp irradiation. The samples were characterised by thermogravimetric analysis-differential scanning calorimetric analysis, Fourier-transform infrared spectroscopy, nitrogen adsorption, X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and ultraviolet-visible diffuse reflectance spectroscopy. The results revealed that the Bi 2 O 3 nanosheet with pure monoclinic phase was successfully synthesised by replication of the petal template with a thickness of about 100 nm, and showed the absorption thresholds wavelength of 480 nm. Moreover, the Bi 2 O 3 nanosheet exhibited 94.84% degradation efficiency of photodegradation of methylene blue in 180 min, which was much more active than that of the commercial α-Bi 2 O 3 due to its high specific surface area of 45.7 m 2 g −1 and wide band gap of 3.10 eV.

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“…Based on the literature, biosynthesis of ZnO nanoparticles were reported by using plant extract including Garcinia mangostana fruit pericarp extract (Aminuzzaman, Ying, Goh, & Watanabe, 2018) and Moringa oleifera leaf (Pal, Mondal, Maity, & Mukherjee, 2018) for the degradation of malachite green and titan yellow dye, respectively. Bismuth oxide (Bi 2 O 3 ) also has attracted tremendous attention due to its unique properties such as high refractive index, superior electrochemical property, photoluminescence, and remarkable photocatalytic activity (Bao, Lim, Zhong, Wang, & Hu, 2017;Dadashi, Poursalehi, & Delavari, 2018;Liu, Pan, Lv, Sun, & Sun, 2013;Raza, Bahnemann, & Muneer, 2018). Bi 2 O 3 exists in six crystallographic polymorphic forms symbolized as α-, β-, γ-, δ-, ε-, and ω-Bi 2 O 3 and has wide bandgap (2.0-3.96 eV) (Huang, Hu, Fan, Wu, & Qiu, 2015;Raza, Haque, Muneer, Harada, & Matsumura, 2015;Wang et al, 2014;Zhang et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Synthesis, characterization, and visible‐light‐induced photocatalytic activity of powdered semiconductor oxides of bismuth and zinc toward degradation of Alizarin Red S

Kaur

Sharma

Kaur

et al. 2020

Water Environment Research

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Semiconductor oxides of bismuth and zinc have been synthesized using modified sol–gel method and sol‐combustion method, respectively. The synthesized catalysts were characterized by X‐ray powder diffraction (XRD), field emission scanning electron microscopy (FESEM), energy‐dispersive X‐ray spectroscopy (EDS), X‐ray photoelectron spectroscopy (XPS), and UV‐vis spectroscopy. The photocatalytic activity of Bi2O3 and ZnO was evaluated for the degradation of Alizarin Red S (ARS), as a model pollutant, at 20 mg/L level in water under visible light irradiation. The percentage of photocatalytic degradation was determined using UV‐vis spectrophotometer. The photocatalytic results revealed that Bi2O3 and ZnO could effectively degrade 73% and 53% of ARS, respectively, within 13 hr under visible light illumination, indicating that synthesized Bi2O3 is a better photocatalyst than ZnO. Photodegradation of ARS with Bi2O3 and ZnO is remarkably influenced by change in pH of the dye solution, and pH 8 was found to be the most favorable for maximum removal of ARS in case of both Bi2O3 (75%) and ZnO (58%) photocatalyst. Practitioner points Photocatalytic degradation of ARS dye depends on pH of the solution. Calcination temperature influences the crystallite size of prepared semiconductor oxides of bismuth and zinc. Bi2O3 shows better photocatalytic degradation efficiency than ZnO under visible light illumination.

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Acetic acid-assisted fabrication of hierarchical flower-like Bi2O3 for photocatalytic degradation of sulfamethoxazole and rhodamine B under solar irradiation

Cited by 48 publications

References 65 publications

Solar Photocatalytic Degradation of Sulfamethoxazole by TiO2 Modified with Noble Metals

Solar Photocatalytic Degradation of Sulfamethoxazole by TiO2 Modified with Noble Metals

Biotemplate preparation of Bi ₂ O ₃ nanosheet for enhanced photodegradation of methylene blue

Synthesis, characterization, and visible‐light‐induced photocatalytic activity of powdered semiconductor oxides of bismuth and zinc toward degradation of Alizarin Red S

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Acetic acid-assisted fabrication of hierarchical flower-like Bi2O3 for photocatalytic degradation of sulfamethoxazole and rhodamine B under solar irradiation

Cited by 48 publications

References 65 publications

Solar Photocatalytic Degradation of Sulfamethoxazole by TiO2 Modified with Noble Metals

Solar Photocatalytic Degradation of Sulfamethoxazole by TiO2 Modified with Noble Metals

Biotemplate preparation of Bi 2 O 3 nanosheet for enhanced photodegradation of methylene blue

Synthesis, characterization, and visible‐light‐induced photocatalytic activity of powdered semiconductor oxides of bismuth and zinc toward degradation of Alizarin Red S

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Biotemplate preparation of Bi ₂ O ₃ nanosheet for enhanced photodegradation of methylene blue