Morphology Tailored Synthesis of C-WO3 nanostructures and its Photocatalytic Application

Tahir, Muhammad Bilal; Nabi, Ghulam; Hassan, Ali; Iqbal, Tahir; Kiran, Habiba; Majid, Abdul

doi:10.1007/s10904-017-0720-8

Cited by 39 publications

(7 citation statements)

References 36 publications

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“…A variety of advanced nanomaterials have been identified as promising candidates for wastewater treatment, such as titanium dioxide (TiO 2 ) nanocomposite, [6] WO 3 ‐CNT@MoSe 2 composites, [7] cerium dioxide and its composites, [8] LaFeO 3 /g‐C 3 N 4 composite, [9] polyphenyl sulfone /nanotinoxide (SnO 2 ) mixed hollow fiber membrane, [10] Eu/WO 3 system, [11] C‐WO 3 nanostructures, [12] rare metals doped tungsten oxide nanostructures and carbon nanodots, [13] and graphene‐WO 3 nanostructures, [14] Nd 2 Sn 2 O 7 nanostructures synthesized using date palm extract, [15] Nd 2 O 3 ‐SiO 2 nanocomposites, [16] Co 3 O 4 /ZnO nanocomposite, [17] CoFe 2 O 4 @SiO 2 @Dy 2 Ce 2 O 7 nanocomposites, [18] iron vanadate nanocomposite, [19] CeO 2 nanoparticles, [20] SnO 2 nanoparticles [21] . As well, various nanostructures have been synthesized and applied in catalytic and photocatalytic fields [22–28] …”

Section: Introductionmentioning

confidence: 99%

Green synthesis of CdWO₄ Nanorods with Enhanced Photocatalytic Activity Utilizing Hyphaene Thebaica Fruit

et al. 2022

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CdWO 4 as one of the metal tungstate family has recently been identified as a strong photocatalyst for the degradation of organic pollutants. Several methods for the synthesis of different CdWO 4 forms have been introduced. All these techniques, however, are either costly or environmentally harmful and create tremendous toxic waste. CdWO 4 nanorods (NRs) are synthesized using a simple eco-friendly method, in which for the first time hyphaene thebaica fruit extract is utilized as a reaction stabilizer, as well as the compounds of the extract serve in functionalizing the CdWO 4 NRs surface, water is used as a solvent without elevated temperatures involved. The synthesized NRs' size, structure, morphology, and optical properties are characterized using TEM, XRD, UV-visible absorption, and Raman spectroscopy techniques. The results demonstrate the successful synthesis of CdWO 4 NRs with an average diameter of 40 nm and length of 100 nm. The CdWO 4 NRs have high crystallinity, and exhibit absorption in the UV light region. As well, the photocatalytic activities of the assynthesized CdWO 4 NRs are investigated under UV irradiation, in which Methylene Blue (MB) is used as a model for an organic pollutant. The degradation efficiency of CdWO 4 NRs is shown to be 99 % after 90 minutes. The CdWO 4 NRs significantly enhance the absorption of light and increase the rate of degradation of MB and the generation and separation of photoinduced charges (i. e. the exciton lifetime). The CdWO 4 NRs showed a high-level degradation rate of MB, as it is fitted with the firstorder kinetic model, this proves that the CdWO 4 NRs can have a great potential for the elimination of organic contaminants, and for the treatment of wastewater as a photocatalyst. Moreover, the as-synthesized CdWO 4 NRs can be used in different environmental applications.

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Section: Introductionmentioning

confidence: 99%

Green synthesis of CdWO₄ Nanorods with Enhanced Photocatalytic Activity Utilizing Hyphaene Thebaica Fruit

et al. 2022

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“…Among them, photocatalysis, which relies on semiconductors and irradiation-based degradation of organic substances, is an effective method [4,5]. The benefits of this approach include environmental friendliness, the potential to entirely decompose organic pollutants into inorganic molecules, i.e., CO 2 and H 2 O. TiO 2 [6][7][8], WO 3 [9][10][11][12][13], and BiVO 4 [14,15] are typical photocatalysts that have been well studied for dyes degradation. Nano ferrites, another material, have recently received a great deal of interest due to their high stability, strong magnetic properties, and high catalytic performance.…”

Section: Introductionmentioning

confidence: 99%

Enhanced Photocatalytic Activity of Spherical Nd3+ Substituted ZnFe2O4 Nanoparticles

Nguyen

et al. 2021

Materials

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In this study, nanocrystalline ZnNdxFe2−xO4 ferrites with x = 0.0, 0.01, 0.03 and 0.05 were fabricated and used as a catalyst for dye removal potential. The effect of Nd3+ ions substitution on the structural, optical and photo-Fenton activity of ZnNdxFe2−xO4 has been investigated. The addition of Nd3+ ions caused a decrease in the grain size of ferrites, the reduction of the optical bandgap energies and thus could be well exploited for the catalytic study. The photocatalytic activity of the ferrite samples was evaluated by the degradation of Rhodamine B (RhB) in the presence of H2O2 under visible light radiation. The results indicated that the ZnNdxFe2−xO4 samples exhibited higher removal efficiencies than the pure ZnFe2O4 ferrites. The highest degradation efficiency was 98.00%, attained after 210 min using the ZnNd0.03Fe1.97O4 sample. The enhanced photocatalytic activity of the ZnFe2O4 doped with Nd3+ is explained due to the efficient separation mechanism of photoinduced electron and holes. The effect of various factors (H2O2 oxidant concentration and catalyst loading) on the degradation of RhB dye was clarified.

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“…Here, the selection of semiconductor material is an important issue. Numerous photocatalysts were reported for different applications in attrition to the hydrogen production reactions 14‐17 . For instance, Wu et.al reported a new strategy to slow electron–hole recombination and increase charge carriers' lifetime for the nanosized g‐C 3 N 4 on LaFeO 3 microsphere 18 .…”

Section: Introductionmentioning

confidence: 99%

Hybrid photoelectrochemical–photocatalytic hydrogen evolution reaction with reduced graphene oxide–binary metal chalcogenide composites

Uğuz

Koca

2021

Int J Energy Res

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Summary In this study, a novel hybrid photoelectrochemical (PEC)–photocatalytic (PC) hydrogen evolution reaction (H‐PEC@PC@HER) reactor was developed, in which, the PC and PEC hydrogen evolution reactions were simultaneously performed to maximize the light absorption and investigated the synergetic interactions between these processes. Solvothermally synthesized reduced graphene oxide (RGO)‐Cd0.60Zn0.40S‐Pt composite was used as the functional photocatalyst for these reactions in H‐PEC@PC@HER reactor. The illumination of the RGO‐Cd0.60Zn0.40S‐Pt photocatalyst and photoanode was provided at the same time, thus while some of the incoming light was absorbed by the RGO‐Cd0.60Zn0.40S‐Pt photocatalyst, the light passing without being absorbed was also absorbed by the photoanode. Consequently, the utilization of the solar light spectrum was maximized with the PC reaction of RGO‐Cd0.60Zn0.40S‐Pt powder and PEC reaction of RGO‐Cd0.60Zn0.40S‐Pt photoanode. The results showed that the hydrogen production rate in the H‐PEC@PC@HER increased ca. 8.2% with respect to that of the single PC reaction. It was observed that the hydrogen production rate in the H‐PEC@PC@HER system enhanced with time due to the enhancing PEC reaction in the residual Na2S/Na2SO3 electrolyte. When compared with the results in fresh electrolyte, the photocurrent density of the RGO‐Cd0.60Zn0.40S‐Pt photoelectrode increased from 1.0 to 1.41 mA/cm2 in the residual Na2S/Na2SO3 electrolyte with a reported enhancement of 17.4% in the photocurrent density. It was proposed that S2O32− ions produced with the PC reaction were used as the hole‐recleavaging reagent of the RGO‐Cd0.60Zn0.40S‐Pt photoelectrode in the PEC system.

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Morphology Tailored Synthesis of C-WO3 nanostructures and its Photocatalytic Application

Cited by 39 publications

References 36 publications

Green synthesis of CdWO₄ Nanorods with Enhanced Photocatalytic Activity Utilizing Hyphaene Thebaica Fruit

Green synthesis of CdWO₄ Nanorods with Enhanced Photocatalytic Activity Utilizing Hyphaene Thebaica Fruit

Enhanced Photocatalytic Activity of Spherical Nd3+ Substituted ZnFe2O4 Nanoparticles

Hybrid photoelectrochemical–photocatalytic hydrogen evolution reaction with reduced graphene oxide–binary metal chalcogenide composites

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Morphology Tailored Synthesis of C-WO3 nanostructures and its Photocatalytic Application

Cited by 39 publications

References 36 publications

Green synthesis of CdWO4 Nanorods with Enhanced Photocatalytic Activity Utilizing Hyphaene Thebaica Fruit

Green synthesis of CdWO4 Nanorods with Enhanced Photocatalytic Activity Utilizing Hyphaene Thebaica Fruit

Enhanced Photocatalytic Activity of Spherical Nd3+ Substituted ZnFe2O4 Nanoparticles

Hybrid photoelectrochemical–photocatalytic hydrogen evolution reaction with reduced graphene oxide–binary metal chalcogenide composites

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Green synthesis of CdWO₄ Nanorods with Enhanced Photocatalytic Activity Utilizing Hyphaene Thebaica Fruit

Green synthesis of CdWO₄ Nanorods with Enhanced Photocatalytic Activity Utilizing Hyphaene Thebaica Fruit