Nitrogen-doped TiO2 suspensions in photocatalytic degradation of mecoprop and (4-chloro-2-methylphenoxy)acetic acid herbicides using various light sources
Abstract
The work describes a study of the oxidation power of nitrogen-doped titanium dioxide (TiO2) suspensions for photocatalytic degradation of the herbicides RS-2-(4-chloro-o-tolyloxy) prop ionic acid (mecoprop) and (4-chloro-2methylphenoxy)acetic acid (MCPA) using various light sources. The nitrogen-doped TiO2 crystalline nanopowder was synthesized by calcination of the hydrolysis product of titanium tetraisopropoxide in ammonia. The product was an anatase crystal phase with mean particle diameter 7-15 nm and specific surface area of 121 +/- 1 m(2) g(-1). It showed visible-light photocatalytic activity at about 530 rim. Although nitrogen concentration in nitrogen-doped TiO2 is low ( LT 1 atomic %), it appeared to be about 1.5 times more efficient than TiO2 Degussa P25 when artificial visible light was used for mecoprop and MCPA degradation, and about six times compared to direct photolysis. It was found that the optimal content of nitrogen-doped TiO2 was 4 mg cm(-3). The photodegradation o...f the herbicide aromatic ring takes place simultaneously with chloride evolution, whereby the reaction in both cases follows first-order kinetics.
Keywords:
Nitrogen-doped titanium dioxide / Mecoprop / MCPA / Photocatalysis / Visible light / SunlightSource:
Desalination, 2009, 244, 1-3, 293-302Funding / projects:
- Ministry of Science and Environmental Protection of the Republic of Serbia, [ON 142029, ON 142066]
DOI: 10.1016/j.desal.2008.06.008
ISSN: 0011-9164
WoS: 000267912600029
Scopus: 2-s2.0-67149102672
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Institution/Community
VinčaTY - JOUR AU - Abramović, Biljana F. AU - Šojić, Daniela V. AU - Anderluh, Vesna B. AU - Abazović, Nadica AU - Čomor, Mirjana PY - 2009 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3741 AB - The work describes a study of the oxidation power of nitrogen-doped titanium dioxide (TiO2) suspensions for photocatalytic degradation of the herbicides RS-2-(4-chloro-o-tolyloxy) prop ionic acid (mecoprop) and (4-chloro-2methylphenoxy)acetic acid (MCPA) using various light sources. The nitrogen-doped TiO2 crystalline nanopowder was synthesized by calcination of the hydrolysis product of titanium tetraisopropoxide in ammonia. The product was an anatase crystal phase with mean particle diameter 7-15 nm and specific surface area of 121 +/- 1 m(2) g(-1). It showed visible-light photocatalytic activity at about 530 rim. Although nitrogen concentration in nitrogen-doped TiO2 is low ( LT 1 atomic %), it appeared to be about 1.5 times more efficient than TiO2 Degussa P25 when artificial visible light was used for mecoprop and MCPA degradation, and about six times compared to direct photolysis. It was found that the optimal content of nitrogen-doped TiO2 was 4 mg cm(-3). The photodegradation of the herbicide aromatic ring takes place simultaneously with chloride evolution, whereby the reaction in both cases follows first-order kinetics. T2 - Desalination T1 - Nitrogen-doped TiO2 suspensions in photocatalytic degradation of mecoprop and (4-chloro-2-methylphenoxy)acetic acid herbicides using various light sources VL - 244 IS - 1-3 SP - 293 EP - 302 DO - 10.1016/j.desal.2008.06.008 ER -
@article{ author = "Abramović, Biljana F. and Šojić, Daniela V. and Anderluh, Vesna B. and Abazović, Nadica and Čomor, Mirjana", year = "2009", abstract = "The work describes a study of the oxidation power of nitrogen-doped titanium dioxide (TiO2) suspensions for photocatalytic degradation of the herbicides RS-2-(4-chloro-o-tolyloxy) prop ionic acid (mecoprop) and (4-chloro-2methylphenoxy)acetic acid (MCPA) using various light sources. The nitrogen-doped TiO2 crystalline nanopowder was synthesized by calcination of the hydrolysis product of titanium tetraisopropoxide in ammonia. The product was an anatase crystal phase with mean particle diameter 7-15 nm and specific surface area of 121 +/- 1 m(2) g(-1). It showed visible-light photocatalytic activity at about 530 rim. Although nitrogen concentration in nitrogen-doped TiO2 is low ( LT 1 atomic %), it appeared to be about 1.5 times more efficient than TiO2 Degussa P25 when artificial visible light was used for mecoprop and MCPA degradation, and about six times compared to direct photolysis. It was found that the optimal content of nitrogen-doped TiO2 was 4 mg cm(-3). The photodegradation of the herbicide aromatic ring takes place simultaneously with chloride evolution, whereby the reaction in both cases follows first-order kinetics.", journal = "Desalination", title = "Nitrogen-doped TiO2 suspensions in photocatalytic degradation of mecoprop and (4-chloro-2-methylphenoxy)acetic acid herbicides using various light sources", volume = "244", number = "1-3", pages = "293-302", doi = "10.1016/j.desal.2008.06.008" }
Abramović, B. F., Šojić, D. V., Anderluh, V. B., Abazović, N.,& Čomor, M.. (2009). Nitrogen-doped TiO2 suspensions in photocatalytic degradation of mecoprop and (4-chloro-2-methylphenoxy)acetic acid herbicides using various light sources. in Desalination, 244(1-3), 293-302. https://doi.org/10.1016/j.desal.2008.06.008
Abramović BF, Šojić DV, Anderluh VB, Abazović N, Čomor M. Nitrogen-doped TiO2 suspensions in photocatalytic degradation of mecoprop and (4-chloro-2-methylphenoxy)acetic acid herbicides using various light sources. in Desalination. 2009;244(1-3):293-302. doi:10.1016/j.desal.2008.06.008 .
Abramović, Biljana F., Šojić, Daniela V., Anderluh, Vesna B., Abazović, Nadica, Čomor, Mirjana, "Nitrogen-doped TiO2 suspensions in photocatalytic degradation of mecoprop and (4-chloro-2-methylphenoxy)acetic acid herbicides using various light sources" in Desalination, 244, no. 1-3 (2009):293-302, https://doi.org/10.1016/j.desal.2008.06.008 . .