Sorption and Photocatalytic Degradation of Trichlorfon by Foam Concrete Blended with Nitrogen-Doped Titanium Dioxide: Fid-Bau Portal

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Sorption and Photocatalytic Degradation of Trichlorfon by Foam Concrete Blended with Nitrogen-Doped Titanium Dioxide

Li, Yi / Gao, Qiang / Xing, Tao / Wang, Dawei / Zhang, Wenlong / Wang, Qing

Foam concrete incorporated with nitrogen-doped ${TiO}_{2}$ ( $N - {TiO}_{2} / FC$ ) was fabricated, characterized, and tested for the sorption and degradation of trichlorfon. The removal performance of trichlorfon under visible-light irradiation by using this concrete was compared with that using pure foam concrete (FC) and foam concrete incorporated with ${TiO}_{2}$ ( ${TiO}_{2} / FC$ ). Factors including the amount of photocatalysts and curing age were investigated. The $N - {TiO}_{2} / FC$ exhibited a higher removal efficiency of trichlorfon but a lower sorption than FC and ${TiO}_{2} / FC$ . The sorption and photocatalytic activity decreased with curing age and the amount of incorporated nanoparticles. Seventy-five percent of $20 mg / L$ trichlorfon was absorbed by $N - {TiO}_{2} / FC$ (6% incorporation and 1-day curing) in 540 min, and 19% of the sorbed trichlorfon was degraded in 180 min with a compressive strength of 4.9 MPa. The FC could absorb nearly 83% of trichlorfon in 540 min but degrade less than 1% in 180 min. Moreover, 6% $N - {TiO}_{2} / FC$ exhibited the best performance (removed almost 100% of trichlorfon in 2 weeks) in pilot-scale experiments, indicating its potential use in nonpoint pollution control.

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Sorption and Photocatalytic Degradation of Trichlorfon by Foam Concrete Blended with Nitrogen-Doped Titanium Dioxide

Li, Yi / Gao, Qiang / Xing, Tao / Wang, Dawei / Zhang, Wenlong / Wang, Qing

Foam concrete incorporated with nitrogen-doped ${TiO}_{2}$ ( $N - {TiO}_{2} / FC$ ) was fabricated, characterized, and tested for the sorption and degradation of trichlorfon. The removal performance of trichlorfon under visible-light irradiation by using this concrete was compared with that using pure foam concrete (FC) and foam concrete incorporated with ${TiO}_{2}$ ( ${TiO}_{2} / FC$ ). Factors including the amount of photocatalysts and curing age were investigated. The $N - {TiO}_{2} / FC$ exhibited a higher removal efficiency of trichlorfon but a lower sorption than FC and ${TiO}_{2} / FC$ . The sorption and photocatalytic activity decreased with curing age and the amount of incorporated nanoparticles. Seventy-five percent of $20 mg / L$ trichlorfon was absorbed by $N - {TiO}_{2} / FC$ (6% incorporation and 1-day curing) in 540 min, and 19% of the sorbed trichlorfon was degraded in 180 min with a compressive strength of 4.9 MPa. The FC could absorb nearly 83% of trichlorfon in 540 min but degrade less than 1% in 180 min. Moreover, 6% $N - {TiO}_{2} / FC$ exhibited the best performance (removed almost 100% of trichlorfon in 2 weeks) in pilot-scale experiments, indicating its potential use in nonpoint pollution control.

Sorption and Photocatalytic Degradation of Trichlorfon by Foam Concrete Blended with Nitrogen-Doped Titanium Dioxide

Li, Yi / Gao, Qiang / Xing, Tao / Wang, Dawei / Zhang, Wenlong / Wang, Qing

Foam concrete incorporated with nitrogen-doped ${TiO}_{2}$ ( $N - {TiO}_{2} / FC$ ) was fabricated, characterized, and tested for the sorption and degradation of trichlorfon. The removal performance of trichlorfon under visible-light irradiation by using this concrete was compared with that using pure foam concrete (FC) and foam concrete incorporated with ${TiO}_{2}$ ( ${TiO}_{2} / FC$ ). Factors including the amount of photocatalysts and curing age were investigated. The $N - {TiO}_{2} / FC$ exhibited a higher removal efficiency of trichlorfon but a lower sorption than FC and ${TiO}_{2} / FC$ . The sorption and photocatalytic activity decreased with curing age and the amount of incorporated nanoparticles. Seventy-five percent of $20 mg / L$ trichlorfon was absorbed by $N - {TiO}_{2} / FC$ (6% incorporation and 1-day curing) in 540 min, and 19% of the sorbed trichlorfon was degraded in 180 min with a compressive strength of 4.9 MPa. The FC could absorb nearly 83% of trichlorfon in 540 min but degrade less than 1% in 180 min. Moreover, 6% $N - {TiO}_{2} / FC$ exhibited the best performance (removed almost 100% of trichlorfon in 2 weeks) in pilot-scale experiments, indicating its potential use in nonpoint pollution control.

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Title:

Sorption and Photocatalytic Degradation of Trichlorfon by Foam Concrete Blended with Nitrogen-Doped Titanium Dioxide

Contributors:

Li, Yi (author) / Gao, Qiang (author) / Xing, Tao (author) / Wang, Dawei (author) / Zhang, Wenlong (author) / Wang, Qing (author)

Published in:

Journal of Materials in Civil Engineering ; 28

Publication date:

2015-12-22

ISSN:

0899-1561 , 1943-5533

DOI:

https://doi.org/10.1061/(ASCE)MT.1943-5533.0001505

Type of media:

Article (Journal)

Type of material:

Electronic Resource

Language:

Unknown

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