Analogous crystal orientation for immobilizing rGO/ZrO 2 /Ag 3 PO 4 nanocomposite on a fluorine–doped tin oxide substrate

Hassan Anwer, Jae-Woo Park

Research output: Contribution to journalArticleResearchpeer-review

1 Citation (Scopus)

Abstract

Immobilization of nanocomposites without compromising their photocatalytic performance is a challenging task. Here, we report a new method that utilizes analogous crystal orientations and similarities in interplanar spacings for photocatalyst immobilization. The photocatalyst rGO/ZrO 2 /Ag 3 PO 4 was synthesized using a green hydrothermal method. A primary layer of ZrO 2 and a secondary layer of rGO/ZrO 2 /Ag 3 PO 4 composite were deposited on a fluorine–doped tin oxide (FTO) substrate. The analogous crystal orientation and interplanar spacing of ZrO 2 between the two layers resulted in composite immobilization on the FTO substrate. X–ray diffraction analysis confirmed that ZrO 2 growth occurred along the same crystal planes in both layers. The film exhibited a low band gap energy (2.6 eV) and excellent light absorption. Photocatalytic performance achieved 92% para–nitrophenol degradation in 150 min. The degradation performance of this immobilization method was 43% higher than those of rGO/ZrO 2 /Ag 3 PO 4 films deposited with conventional binder approaches. The quantum yield of the system was 3.46 × 10 –5 molecules·photon –1 . Finally, a figure of merit based on different parameters was determined and compared with previous results to assess the practicality of this system.

Original languageEnglish
Pages (from-to)375-383
Number of pages9
JournalJournal of Hazardous Materials
DOIs
StatePublished - 2019 May 5

Fingerprint

Nanocomposites
Photocatalysts
Tin oxides
tin
Immobilization
Crystal orientation
immobilization
oxide
crystal
substrate
Degradation
Composite materials
Quantum yield
Substrates
Light absorption
Binders
spacing
Energy gap
Diffraction
Crystals

Keywords

  • Crystal orientation
  • Fluorine–doped tin oxide
  • Para–nitrophenol
  • Quantum yield

Cite this

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title = "Analogous crystal orientation for immobilizing rGO/ZrO 2 /Ag 3 PO 4 nanocomposite on a fluorine–doped tin oxide substrate",
abstract = "Immobilization of nanocomposites without compromising their photocatalytic performance is a challenging task. Here, we report a new method that utilizes analogous crystal orientations and similarities in interplanar spacings for photocatalyst immobilization. The photocatalyst rGO/ZrO 2 /Ag 3 PO 4 was synthesized using a green hydrothermal method. A primary layer of ZrO 2 and a secondary layer of rGO/ZrO 2 /Ag 3 PO 4 composite were deposited on a fluorine–doped tin oxide (FTO) substrate. The analogous crystal orientation and interplanar spacing of ZrO 2 between the two layers resulted in composite immobilization on the FTO substrate. X–ray diffraction analysis confirmed that ZrO 2 growth occurred along the same crystal planes in both layers. The film exhibited a low band gap energy (2.6 eV) and excellent light absorption. Photocatalytic performance achieved 92{\%} para–nitrophenol degradation in 150 min. The degradation performance of this immobilization method was 43{\%} higher than those of rGO/ZrO 2 /Ag 3 PO 4 films deposited with conventional binder approaches. The quantum yield of the system was 3.46 × 10 –5 molecules·photon –1 . Finally, a figure of merit based on different parameters was determined and compared with previous results to assess the practicality of this system.",
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Analogous crystal orientation for immobilizing rGO/ZrO 2 /Ag 3 PO 4 nanocomposite on a fluorine–doped tin oxide substrate . / Anwer, Hassan; Park, Jae-Woo.

In: Journal of Hazardous Materials, 05.05.2019, p. 375-383.

Research output: Contribution to journalArticleResearchpeer-review

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AB - Immobilization of nanocomposites without compromising their photocatalytic performance is a challenging task. Here, we report a new method that utilizes analogous crystal orientations and similarities in interplanar spacings for photocatalyst immobilization. The photocatalyst rGO/ZrO 2 /Ag 3 PO 4 was synthesized using a green hydrothermal method. A primary layer of ZrO 2 and a secondary layer of rGO/ZrO 2 /Ag 3 PO 4 composite were deposited on a fluorine–doped tin oxide (FTO) substrate. The analogous crystal orientation and interplanar spacing of ZrO 2 between the two layers resulted in composite immobilization on the FTO substrate. X–ray diffraction analysis confirmed that ZrO 2 growth occurred along the same crystal planes in both layers. The film exhibited a low band gap energy (2.6 eV) and excellent light absorption. Photocatalytic performance achieved 92% para–nitrophenol degradation in 150 min. The degradation performance of this immobilization method was 43% higher than those of rGO/ZrO 2 /Ag 3 PO 4 films deposited with conventional binder approaches. The quantum yield of the system was 3.46 × 10 –5 molecules·photon –1 . Finally, a figure of merit based on different parameters was determined and compared with previous results to assess the practicality of this system.

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