CdS/TiO2 heterojunction in glass matrix: Synthesis, characterization, and application as an improved photocatalyst

Janbandhu, S.Y.; Joshi, Aprajita; Munishwar, S.R.; Gedam, R.S.

doi:10.1016/j.apsusc.2019.143758

Cited by 48 publications

(20 citation statements)

References 76 publications

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“…(b‐1,(b‐2), the band‐gaps of Ta 2 O 5 and TiO 2 are 3.95 and 3.23 eV, respectively. They are close to the literature references …”

Section: Resultssupporting

confidence: 86%

“…Moreover, the VB and CB potentials of Ta 2 O 5 and TiO 2 can be calculated by the following empirical equations:

E_{VB} = χ - E_{0} + 0.5 E_{bg}

E_{CB} = E_{VB} - E_{bg},

where E VB and E CB are the energies of the VB and CB potentials, respectively, E 0 (4.5 eV) is the free electron energy of the normal hydrogen electrode. The χ value is the absolute electronegativity of semiconductor sonocatalysts (6.23 eV for Ta 2 O 5 and 5.66 eV for TiO 2 , respectively). Figure (b‐1, b‐2) show that the E bg values of Ta 2 O 5 and TiO 2 are 3.95 and 3.23 eV, respectively.…”

Section: Resultsmentioning

confidence: 99%

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Construction of Z‐scheme Pt‐TiO₂/(Er³⁺:Y₃Al₅O₁₂@Ta₂O₅)/HAP and its application in sonocatalytic degradation of prometryn and disinfection of Escherichia coli

Cao

et al. 2020

J of Chemical Tech & Biotech

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BACKGROUND: The recovery and reuse of sonocatalysts are the pivotal issues in the sonocatalytic degradation of organic pollutants. The use of some natural minerals as the carrier is not only beneficial to recycling of sonocatalysts, but also reduces the treatment costs of organic pollutants. Two kinds of hydroxyapatite (HAP), Ox Bone (OB)-HAP and synthesized (Syn)-HAP combine with the Pt-TiO 2 /(Er 3+ :Y 3 Al 5 O 12 @Ta 2 O 5 ) (P-TET) composite, obtaining two Z-scheme sonocatalysts, P-TET/OB-HAP and P-TET/Syn-HAP, respectively. The sonocatalytic activities of the prepared samples are investigated via degradation of prometryn and disinfection of Escherichia coli.RESULTS: A series of characterizations showed that the Z-scheme P-TET/(OB or Syn)-HAP sonocatalysts were prepared successfully. To evaluate their sonocatalytic activities, some influencing factors such as ultrasonic irradiation time, inorganic oxidants, used times and trapping agents on the sonocatalytic degradation prometryn were determined. The best degradation ratio (80.31% based on N computing and 85.07% based on S atom computing) of prometryn could be obtained for 10 mmol L −1 K 2 S 2 O 8 , 1.0 g L −1 P-TET/OB-HAP sonocatalyst and 150 min ultrasonic irradiation. The excellent sonocatalytic disinfection ratio (88.65%) of E. coli could also be obtained under 40 min ultrasound irradiation. Moreover, a possible mechanism on sonocatalytic degradation of prometryn was illustrated.CONCLUSION: The treated bovine bone HAP was directly used as a carrier to combine with P-TET to construct a novel Z-scheme P-TET/OB-HAP sonocatalyst. The high degradation ratio of prometryn and disinfection ratio of E. coli showed that P-TET/OB-HAP could be a promising sonocatalyst for the degradation of organic pollutants and the disinfection of bacteria.

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“…(b‐1,(b‐2), the band‐gaps of Ta 2 O 5 and TiO 2 are 3.95 and 3.23 eV, respectively. They are close to the literature references …”

Section: Resultssupporting

confidence: 86%

“…Moreover, the VB and CB potentials of Ta 2 O 5 and TiO 2 can be calculated by the following empirical equations:

E_{VB} = χ - E_{0} + 0.5 E_{bg}

E_{CB} = E_{VB} - E_{bg},

Section: Resultsmentioning

confidence: 99%

Construction of Z‐scheme Pt‐TiO₂/(Er³⁺:Y₃Al₅O₁₂@Ta₂O₅)/HAP and its application in sonocatalytic degradation of prometryn and disinfection of Escherichia coli

Cao

et al. 2020

J of Chemical Tech & Biotech

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show abstract

“…To make TiO 2 active in visible light and to increase dye degradation efficiency by reducing the recombination rate of charge carriers, the pure TiO 2 could be engineered by the inclusion of semiconductors [14] , doping of non-metal [15] , transition metals [16,17] , and noble metals [18][19][20][21] . TiO 2 doped with noble metals has a wide range of applications also the electronic properties are potentially modified due to the formation of a metal-semiconductor region in the material.…”

Section: Introductionmentioning

confidence: 99%

Ag‐Doped TiO₂Nanoparticles as an Effective Photocatalyst for Degradation of Indigo Carmine Dye under Visible Light

et al. 2021

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TiO2 nanoparticles doped with Ag have been prepared by Sol‐gel route. Prepared materials were characterized by various characterization techniques. The phases of prepared samples were confirmed by X‐ray diffraction (XRD) and Raman analysis and the single phase anatase structure of TiO2 was identified. Spherical shape nanoparticles were observed in High‐resolution transmission electron microscopy (HR‐TEM). Optical absorption and Photoluminsescence (PL) measurements were carried out to find the energy band gap and recombination rate of charge carriers respectively. The photocatalytic activity of prepared samples was tested on Indigo Carmine (IC) dye as an organic pollutant under visible light irradiation. Improvement in degradation efficiency was observed with an increase in Ag concentration. Degree of mineralization of IC‐dye after photocatalytic activity was studied by total oraganic carbon (TOC) analysis.

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“…The other XRD peaks at 37.90, 48.04, 54.17, 55.18, 62.78, 69.56, and 75.45 corresponds to (004), ( 200), ( 105), ( 211), ( 204), ( 215), (116) planes of anatase phase of TiO2 [14,15]. It is confirmed that the crystallites size of TiO2 is found to grow with increase in pH value.…”

Section: Xrd Analysismentioning

confidence: 99%

Investigation of photocatalytic activity of TiO2 nanoparticles synthesized by sol–gel technique

et al. 2021

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Anatase phase TiO2 nanoparticles were synthesized by sol-gel method using titanium(IV) butoxide as a starting material. The pH of solution was maintained by adding HNO3 and NaOH.The obtained powder was heat treated at 350̊ C for 2 hours. The XRD study shows that the crystalline size and crystalinity of samples increases with pH of solution. Raman spectra confirm the dominance of anatase phase of TiO2. Morphology study of samples was done by scanning electron microscope (SEM). The size of prepared samples was calculated by XRD and confirmed by TEM analysis. The energy band gap was calculated by optical absorption spectra and it was found to decrease by increasing pH of the solution. The photodegration activity of IC dye under visible light irradiation was carried out by synthesized TiO2 Nanoparticles.

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CdS/TiO2 heterojunction in glass matrix: Synthesis, characterization, and application as an improved photocatalyst

Cited by 48 publications

References 76 publications

Construction of Z‐scheme Pt‐TiO₂/(Er³⁺:Y₃Al₅O₁₂@Ta₂O₅)/HAP and its application in sonocatalytic degradation of prometryn and disinfection of Escherichia coli

Construction of Z‐scheme Pt‐TiO₂/(Er³⁺:Y₃Al₅O₁₂@Ta₂O₅)/HAP and its application in sonocatalytic degradation of prometryn and disinfection of Escherichia coli

Ag‐Doped TiO₂Nanoparticles as an Effective Photocatalyst for Degradation of Indigo Carmine Dye under Visible Light

Investigation of photocatalytic activity of TiO2 nanoparticles synthesized by sol–gel technique

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CdS/TiO2 heterojunction in glass matrix: Synthesis, characterization, and application as an improved photocatalyst

Cited by 48 publications

References 76 publications

Construction of Z‐scheme Pt‐TiO2/(Er3+:Y3Al5O12@Ta2O5)/HAP and its application in sonocatalytic degradation of prometryn and disinfection of Escherichia coli

Construction of Z‐scheme Pt‐TiO2/(Er3+:Y3Al5O12@Ta2O5)/HAP and its application in sonocatalytic degradation of prometryn and disinfection of Escherichia coli

Ag‐Doped TiO2Nanoparticles as an Effective Photocatalyst for Degradation of Indigo Carmine Dye under Visible Light

Investigation of photocatalytic activity of TiO2 nanoparticles synthesized by sol–gel technique

Contact Info

Product

Resources

About

Construction of Z‐scheme Pt‐TiO₂/(Er³⁺:Y₃Al₅O₁₂@Ta₂O₅)/HAP and its application in sonocatalytic degradation of prometryn and disinfection of Escherichia coli

Construction of Z‐scheme Pt‐TiO₂/(Er³⁺:Y₃Al₅O₁₂@Ta₂O₅)/HAP and its application in sonocatalytic degradation of prometryn and disinfection of Escherichia coli

Ag‐Doped TiO₂Nanoparticles as an Effective Photocatalyst for Degradation of Indigo Carmine Dye under Visible Light