Details
| Original language | English |
|---|---|
| Pages (from-to) | 199-210 |
| Number of pages | 12 |
| Journal | Arabian Journal for Science and Engineering |
| Volume | 43 |
| Issue number | 1 |
| Early online date | 20 Oct 2017 |
| Publication status | Published - Jan 2018 |
Abstract
Various multi-wall carbon nanotube (MWCNT)/titanium dioxide nanocomposites were synthesized using a low-temperature sol–gel method and a simple evaporation and drying process. Various techniques such as X-ray diffraction, energy-dispersive X-ray analysis, UV–visible diffuse reflectance spectroscopy, and scanning electron microscopy were used to confirm the structures of the newly synthesized nanocomposites. The photocatalytic activity of the new nanocomposites was investigated by using them as catalysts for the degradation of Bismarck brown R dye. The maximum rate of BBR photodegradation was achieved with a composite with a MWCNT / TiO 2 ratio of 0.5% (w/w). The photocatalytic activity of TiO 2 was improved in the presence of the new MWCNT nanocomposite. The synthesized nanocomposite shows an obvious red shift compared to TiO 2. The band gap of TiO 2 was reduced from 3.25 to 2.8 eV in the presence of MWCNTs (0.5 wt%). Evidently, the recombination of photogenerated electron–hole pairs could be retarded in the presence of a MWCNT/TiO 2 nanocomposite. Moreover, MWCNTs can control TiO 2 particles’ morphology within the MWCNT/TiO 2 nanocomposite by acting as a dispersing support.
Keywords
- Bismarck brown R dye, Electron–hole pairs, Multi-wall carbon nanotubes/titanium dioxide nanocomposite, Photocatalytic activity, Photodegradation
ASJC Scopus subject areas
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In: Arabian Journal for Science and Engineering, Vol. 43, No. 1, 01.2018, p. 199-210.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Synthesis, Characterization and Photocatalytic Activity of Carbon Nanotube/Titanium Dioxide Nanocomposites
AU - Kamil, A.M.
AU - Mohammed, H.T.
AU - Balakit, A.A.
AU - Hussein, F.H.
AU - Bahnemann, D.W.
AU - El-Hiti, G.A.
N1 - © King Fahd University of Petroleum & Minerals 2017
PY - 2018/1
Y1 - 2018/1
N2 - Various multi-wall carbon nanotube (MWCNT)/titanium dioxide nanocomposites were synthesized using a low-temperature sol–gel method and a simple evaporation and drying process. Various techniques such as X-ray diffraction, energy-dispersive X-ray analysis, UV–visible diffuse reflectance spectroscopy, and scanning electron microscopy were used to confirm the structures of the newly synthesized nanocomposites. The photocatalytic activity of the new nanocomposites was investigated by using them as catalysts for the degradation of Bismarck brown R dye. The maximum rate of BBR photodegradation was achieved with a composite with a MWCNT / TiO 2 ratio of 0.5% (w/w). The photocatalytic activity of TiO 2 was improved in the presence of the new MWCNT nanocomposite. The synthesized nanocomposite shows an obvious red shift compared to TiO 2. The band gap of TiO 2 was reduced from 3.25 to 2.8 eV in the presence of MWCNTs (0.5 wt%). Evidently, the recombination of photogenerated electron–hole pairs could be retarded in the presence of a MWCNT/TiO 2 nanocomposite. Moreover, MWCNTs can control TiO 2 particles’ morphology within the MWCNT/TiO 2 nanocomposite by acting as a dispersing support.
AB - Various multi-wall carbon nanotube (MWCNT)/titanium dioxide nanocomposites were synthesized using a low-temperature sol–gel method and a simple evaporation and drying process. Various techniques such as X-ray diffraction, energy-dispersive X-ray analysis, UV–visible diffuse reflectance spectroscopy, and scanning electron microscopy were used to confirm the structures of the newly synthesized nanocomposites. The photocatalytic activity of the new nanocomposites was investigated by using them as catalysts for the degradation of Bismarck brown R dye. The maximum rate of BBR photodegradation was achieved with a composite with a MWCNT / TiO 2 ratio of 0.5% (w/w). The photocatalytic activity of TiO 2 was improved in the presence of the new MWCNT nanocomposite. The synthesized nanocomposite shows an obvious red shift compared to TiO 2. The band gap of TiO 2 was reduced from 3.25 to 2.8 eV in the presence of MWCNTs (0.5 wt%). Evidently, the recombination of photogenerated electron–hole pairs could be retarded in the presence of a MWCNT/TiO 2 nanocomposite. Moreover, MWCNTs can control TiO 2 particles’ morphology within the MWCNT/TiO 2 nanocomposite by acting as a dispersing support.
KW - Bismarck brown R dye
KW - Electron–hole pairs
KW - Multi-wall carbon nanotubes/titanium dioxide nanocomposite
KW - Photocatalytic activity
KW - Photodegradation
UR - http://www.scopus.com/inward/record.url?scp=85039903284&partnerID=8YFLogxK
U2 - 10.1007/s13369-017-2861-z
DO - 10.1007/s13369-017-2861-z
M3 - Article
VL - 43
SP - 199
EP - 210
JO - Arabian Journal for Science and Engineering
JF - Arabian Journal for Science and Engineering
SN - 1319-8025
IS - 1
ER -