Design expert application for optimization of Ag/AgBr/TiO2 visible light photocatalyst preparation

Augustine Chioma Affam; Wong Chee Chung; Poh Lin Lau; Olufemi Adebayo Johnson; Khor Cheng Seong; Lavania Baloo; Bryan Wong Lee Peng; Fung Xınru

doi:10.1007/978-981-33-6311-3_11

Design expert application for optimization of Ag/AgBr/TiO₂ visible light photocatalyst preparation

Augustine Chioma Affam^*, Wong Chee Chung, Poh Lin Lau, Olufemi Adebayo Johnson, Khor Cheng Seong, Lavania Baloo, Bryan Wong Lee Peng, Fung Xınru

^*Corresponding author for this work

School of Energy, Geoscience, Infrastructure and Society

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

1 Citation (Scopus)

Abstract

Titanium dioxide (TiO₂) was activated under visible light after modification by doping with silver/silver bromide (Ag/AgBr) through simple impregnation-precipitation-photoreduction process. The use of central composite design tool of design expert in order to optimize the preparation parameters namely silver dopant, precipitation time and photoreduction time for the degradation of pesticide chloropyrifos was feasible. From the analysis of variance (ANOVA), the most influential factors affecting the experimental process and interaction was identified. The chemical oxygen demand (COD) removal increased with increasing the amount of Ag dopant and photoreduction time while precipitation time was not a significant factor. Optimized condition for preparation of the Ag/AgBr/TiO₂ was mass ratio of Ag to TiO₂: 1:1, precipitation time: 60 min, and photoreduction time: 90 min. Experimental COD removal efficiency was 77% while the predicted value was 77.4%. The percentage error was 0.51%. The close agreement between both predicted and actual COD removal shows good model.

Original language	English
Title of host publication	Proceedings of the 6th International Conference on Civil, Offshore and Environmental Engineering
Editors	Bashar S. Mohammed, Nasir Shafiq, Shamsul Rahman M. Kutty, Hisham Mohamad, Abdul-Lateef Balogun
Publisher	Springer
Pages	93-102
Number of pages	10
ISBN (Electronic)	9789813363113
ISBN (Print)	9789813363106
DOIs	https://doi.org/10.1007/978-981-33-6311-3_11
Publication status	Published - 1 Jan 2021
Event	6th International Conference on Civil, Offshore and Environmental Engineering 2020 - Kuching, Malaysia Duration: 13 Jul 2021 → 15 Jul 2021

Publication series

Name	Lecture Notes in Civil Engineering
Volume	132
ISSN (Print)	2366-2557
ISSN (Electronic)	2366-2565

Conference

Conference	6th International Conference on Civil, Offshore and Environmental Engineering 2020
Abbreviated title	ICCOEE 2020
Country/Territory	Malaysia
City	Kuching
Period	13/07/21 → 15/07/21

Keywords

CCD
Chlorpyrifos wastewater
COD
Modeling
Optimization
Phosphate
Visible light photocatalysis

ASJC Scopus subject areas

Civil and Structural Engineering

Access to Document

10.1007/978-981-33-6311-3_11

Cite this

Affam, A. C., Chung, W. C., Lau, P. L., Johnson, O. A., Seong, K. C., Baloo, L., Peng, B. W. L., & Xınru, F. (2021). Design expert application for optimization of Ag/AgBr/TiO₂ visible light photocatalyst preparation. In B. S. Mohammed, N. Shafiq, S. R. M. Kutty, H. Mohamad, & A-L. Balogun (Eds.), Proceedings of the 6th International Conference on Civil, Offshore and Environmental Engineering (pp. 93-102). (Lecture Notes in Civil Engineering; Vol. 132). Springer. https://doi.org/10.1007/978-981-33-6311-3_11

Affam, Augustine Chioma ; Chung, Wong Chee ; Lau, Poh Lin et al. / Design expert application for optimization of Ag/AgBr/TiO₂ visible light photocatalyst preparation. Proceedings of the 6th International Conference on Civil, Offshore and Environmental Engineering. editor / Bashar S. Mohammed ; Nasir Shafiq ; Shamsul Rahman M. Kutty ; Hisham Mohamad ; Abdul-Lateef Balogun. Springer, 2021. pp. 93-102 (Lecture Notes in Civil Engineering).

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title = "Design expert application for optimization of Ag/AgBr/TiO2 visible light photocatalyst preparation",

abstract = "Titanium dioxide (TiO2) was activated under visible light after modification by doping with silver/silver bromide (Ag/AgBr) through simple impregnation-precipitation-photoreduction process. The use of central composite design tool of design expert in order to optimize the preparation parameters namely silver dopant, precipitation time and photoreduction time for the degradation of pesticide chloropyrifos was feasible. From the analysis of variance (ANOVA), the most influential factors affecting the experimental process and interaction was identified. The chemical oxygen demand (COD) removal increased with increasing the amount of Ag dopant and photoreduction time while precipitation time was not a significant factor. Optimized condition for preparation of the Ag/AgBr/TiO2 was mass ratio of Ag to TiO2: 1:1, precipitation time: 60 min, and photoreduction time: 90 min. Experimental COD removal efficiency was 77% while the predicted value was 77.4%. The percentage error was 0.51%. The close agreement between both predicted and actual COD removal shows good model.",

keywords = "CCD, Chlorpyrifos wastewater, COD, Modeling, Optimization, Phosphate, Visible light photocatalysis",

author = "Affam, {Augustine Chioma} and Chung, {Wong Chee} and Lau, {Poh Lin} and Johnson, {Olufemi Adebayo} and Seong, {Khor Cheng} and Lavania Baloo and Peng, {Bryan Wong Lee} and Fung Xınru",

note = "Publisher Copyright: {\textcopyright} The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd. 2021. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.; 6th International Conference on Civil, Offshore and Environmental Engineering 2020, ICCOEE 2020 ; Conference date: 13-07-2021 Through 15-07-2021",

year = "2021",

month = jan,

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pages = "93--102",

editor = "Mohammed, {Bashar S.} and Nasir Shafiq and Kutty, {Shamsul Rahman M.} and Hisham Mohamad and Abdul-Lateef Balogun",

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Affam, AC, Chung, WC, Lau, PL, Johnson, OA, Seong, KC, Baloo, L, Peng, BWL & Xınru, F 2021, Design expert application for optimization of Ag/AgBr/TiO₂ visible light photocatalyst preparation. in BS Mohammed, N Shafiq, SRM Kutty, H Mohamad & A-L Balogun (eds), Proceedings of the 6th International Conference on Civil, Offshore and Environmental Engineering. Lecture Notes in Civil Engineering, vol. 132, Springer, pp. 93-102, 6th International Conference on Civil, Offshore and Environmental Engineering 2020, Kuching, Malaysia, 13/07/21. https://doi.org/10.1007/978-981-33-6311-3_11

Design expert application for optimization of Ag/AgBr/TiO₂ visible light photocatalyst preparation. / Affam, Augustine Chioma; Chung, Wong Chee; Lau, Poh Lin et al.

Proceedings of the 6th International Conference on Civil, Offshore and Environmental Engineering. ed. / Bashar S. Mohammed; Nasir Shafiq; Shamsul Rahman M. Kutty; Hisham Mohamad; Abdul-Lateef Balogun. Springer, 2021. p. 93-102 (Lecture Notes in Civil Engineering; Vol. 132).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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T1 - Design expert application for optimization of Ag/AgBr/TiO2 visible light photocatalyst preparation

AU - Affam, Augustine Chioma

AU - Chung, Wong Chee

AU - Lau, Poh Lin

AU - Johnson, Olufemi Adebayo

AU - Seong, Khor Cheng

AU - Baloo, Lavania

AU - Peng, Bryan Wong Lee

AU - Xınru, Fung

PY - 2021/1/1

Y1 - 2021/1/1

N2 - Titanium dioxide (TiO2) was activated under visible light after modification by doping with silver/silver bromide (Ag/AgBr) through simple impregnation-precipitation-photoreduction process. The use of central composite design tool of design expert in order to optimize the preparation parameters namely silver dopant, precipitation time and photoreduction time for the degradation of pesticide chloropyrifos was feasible. From the analysis of variance (ANOVA), the most influential factors affecting the experimental process and interaction was identified. The chemical oxygen demand (COD) removal increased with increasing the amount of Ag dopant and photoreduction time while precipitation time was not a significant factor. Optimized condition for preparation of the Ag/AgBr/TiO2 was mass ratio of Ag to TiO2: 1:1, precipitation time: 60 min, and photoreduction time: 90 min. Experimental COD removal efficiency was 77% while the predicted value was 77.4%. The percentage error was 0.51%. The close agreement between both predicted and actual COD removal shows good model.

AB - Titanium dioxide (TiO2) was activated under visible light after modification by doping with silver/silver bromide (Ag/AgBr) through simple impregnation-precipitation-photoreduction process. The use of central composite design tool of design expert in order to optimize the preparation parameters namely silver dopant, precipitation time and photoreduction time for the degradation of pesticide chloropyrifos was feasible. From the analysis of variance (ANOVA), the most influential factors affecting the experimental process and interaction was identified. The chemical oxygen demand (COD) removal increased with increasing the amount of Ag dopant and photoreduction time while precipitation time was not a significant factor. Optimized condition for preparation of the Ag/AgBr/TiO2 was mass ratio of Ag to TiO2: 1:1, precipitation time: 60 min, and photoreduction time: 90 min. Experimental COD removal efficiency was 77% while the predicted value was 77.4%. The percentage error was 0.51%. The close agreement between both predicted and actual COD removal shows good model.

KW - CCD

KW - Chlorpyrifos wastewater

KW - COD

KW - Modeling

KW - Optimization

KW - Phosphate

KW - Visible light photocatalysis

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U2 - 10.1007/978-981-33-6311-3_11

DO - 10.1007/978-981-33-6311-3_11

M3 - Conference contribution

AN - SCOPUS:85100813392

SN - 9789813363106

T3 - Lecture Notes in Civil Engineering

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BT - Proceedings of the 6th International Conference on Civil, Offshore and Environmental Engineering

A2 - Mohammed, Bashar S.

A2 - Shafiq, Nasir

A2 - Kutty, Shamsul Rahman M.

A2 - Mohamad, Hisham

A2 - Balogun, Abdul-Lateef

PB - Springer

T2 - 6th International Conference on Civil, Offshore and Environmental Engineering 2020

Y2 - 13 July 2021 through 15 July 2021

ER -

Affam AC, Chung WC, Lau PL, Johnson OA, Seong KC, Baloo L et al. Design expert application for optimization of Ag/AgBr/TiO₂ visible light photocatalyst preparation. In Mohammed BS, Shafiq N, Kutty SRM, Mohamad H, Balogun A-L, editors, Proceedings of the 6th International Conference on Civil, Offshore and Environmental Engineering. Springer. 2021. p. 93-102. (Lecture Notes in Civil Engineering). doi: 10.1007/978-981-33-6311-3_11