+ Site Statistics
+ Search Articles
+ PDF Full Text Service
How our service works
Request PDF Full Text
+ Follow Us
Follow on Facebook
Follow on Twitter
Follow on LinkedIn
+ Subscribe to Site Feeds
Most Shared
PDF Full Text
+ Translate
+ Recently Requested

Mesoporous TiO 2 with WO 3 functioning as dopant and light-sensitizer: A highly efficient photocatalyst for degradation of organic compound

Mesoporous TiO 2 with WO 3 functioning as dopant and light-sensitizer: A highly efficient photocatalyst for degradation of organic compound

Journal of Hazardous Materials 358: 44-52

The suitable doping or modification on TiO2 holds promise for improving charge separation and extending light absorption range. Here, WO3 modifying reduced band gap mesoporous TiO2 (WO3/RM-TiO2) due to WO3 doping was successfully fabricated by immersing mesoporous TiO2 nanoparticles in the peroxotungstic acid sol with controllable reaction time (0-1 h). The W6+ ions were first incorporated into the TiO2 lattice to form WOTi bonds, resulting in the formation of WO3 doping TiO2. Then, WO3 nanoparticles gradually formed and attached on the TiO2 surface, constructing a novel heterojunction catalyst with WO3 serving as both dopant and light-sensitizer for TiO2. Photocatalytic activity of the resulting WO3/RM-TiO2 depends on the immersing duration in the peroxotungstic acid. The BET analysis shows that 0.5 h-WO3/RM-TiO2 has the largest pore volume of 0.491 cm3 g-1 and the highest surface area of 82.3 m2 g-1, whereas these values decline with prolonged immersing duration. As expected, the optimal efficiency in removing p-nitrophenol (PNP) is achieved over 0.5 h-WO3/RM-TiO2 under visible light irradiation, which is 2.33 times that of the unmodified M-TiO2. This should be attributed to the suitable WO3 doping and WO3 modification.

Please choose payment method:

(PDF emailed within 0-6 h: $19.90)

Accession: 065310423

Download citation: RISBibTeXText

PMID: 29960933

DOI: 10.1016/j.jhazmat.2018.06.039

Related references

Hydrogenated TiO2 nanobelts as highly efficient photocatalytic organic dye degradation and hydrogen evolution photocatalyst. Journal of Hazardous Materials 299: 165-173, 2015

Comparative studies of operational parameters of degradation of azo dyes in visible light by highly efficient WOx/TiO2 photocatalyst. Journal of Hazardous Materials 177(1-3): 781-791, 2010

Palladium phthalocyaninesulfonate functionalized mesoporous polymer: A highly efficient photocatalyst for degradation of 4-chlorophenol under visible light irradiation. Journal of Molecular Catalysis A: Chemical 371: 15-20, 2013

CTAB-assisted synthesis of monoclinic BiVO4 photocatalyst and its highly efficient degradation of organic dye under visible-light irradiation. Journal of Hazardous Materials 173(1-3): 194-199, 2010

CTAB-Assisted Hydrothermal Synthesis of Bi2Sn2O7 Photocatalyst and Its Highly Efficient Degradation of Organic Dye under Visible-Light Irradiation. International Journal of Photoenergy 2013: 1-7, 2013

TiO2 supported over SBA-15: An efficient photocatalyst for the pesticide degradation using solar light. Chemosphere 73(9): 1562-1569, 2008

Highly efficient visible-light-induced photocatalytic activity of nanostructured AgI/TiO2 photocatalyst. Langmuir 24(15): 8351-8357, 2008

Highly efficient visible light TiO2 photocatalyst prepared by sol-gel method at temperatures lower than 300°C. Journal of Hazardous Materials 192(1): 150-159, 2011

An efficient and novel porous nanosilica supported TiO2 photocatalyst for pesticide degradation using solar light. Journal of Hazardous Materials 171(1-3): 626-633, 2009

Efficient degradation of benzene over LaVO4/TiO2 nanocrystalline heterojunction photocatalyst under visible light irradiation. Environmental Science and Technology 43(11): 4164-4168, 2009

One-pot approach for synthesis of N-doped TiO2/ZnFe2O4 hybrid as an efficient photocatalyst for degradation of aqueous organic pollutants. Journal of Hazardous Materials 291: 28-37, 2015

Natural sunlight driven highly efficient photocatalysis for simultaneous degradation of rhodamine B and methyl orange using I/C codoped TiO 2 photocatalyst. Journal of Hazardous Materials 360: 356-363, 2018

Light-induced efficient molecular oxygen activation on a Cu(II)-grafted TiO2/graphene photocatalyst for phenol degradation. Acs Applied Materials and Interfaces 7(3): 1816-1823, 2015

Integrated ternary nanocomposite of TiO2/NiO/reduced graphene oxide as a visible light photocatalyst for efficient degradation of o-chlorophenol. Journal of Environmental Management 181: 563-573, 2016

A new route for degradation of volatile organic compounds under visible light: using the bifunctional photocatalyst Pt/TiO2-xNx in H2-O2 atmosphere. Environmental Science & Technology 42(6): 2130-2135, 2008