The Experts below are selected from a list of 1605 Experts worldwide ranked by ideXlab platform
Jaekyung Yoon - One of the best experts on this subject based on the ideXlab platform.
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self rotating photocatalytic system for aqueous cr vi reduction on tio2 nanotube ti mesh substrate
Chemical Engineering Journal, 2013Co-Authors: Youngji Kim, Hyunku Joo, Namguk Her, Yeomin Yoon, Chang Ha Lee, Jaekyung YoonAbstract:Abstract In this study, a self-rotating photocatalytic system is applied to reduce toxic Cr(VI) to non-toxic Cr(III) in aqueous solution under UV irradiation. To overcome the limitation of powdery photocatalysis, a novel approach towards a photocatalytic system for aqueous Cr(VI) reduction including self-rotating TiO 2 nanotubes on a Ti substrate (mesh type) was established. For the preparation of TiO 2 nanotubes on the Ti substrate, Ti mesh (10 cm × 10 cm) was anodized at 50 V to 25 °C for 25 min with mixed electrolytes (NH 4 F–H 2 O–C 2 H 6 O 2 ), and then annealed at 450 °C for 2 h in ambient oxygen at a flow rate of 400 mL min −1 . The fabricated TiO 2 nanotube arrays were uniformly grown on Ti mesh and surface characterizations was performed through the measurements of SEM, XRD, and zeta potential. The HRT (Hydraulic retention time) and rotating speeds were significantly affected by Inlet Flowrate in this reactor being decreased and increased, respectively, with increasing Inlet Flowrate. Hence, the efficiency of photocatalytic Cr(VI) reduction was observed to be highest up to 95% at the 90 rpm. In addition, the rate of Cr(VI) reduction was increased by increasing the number of TiO 2 /Ti meshes.
Youngji Kim - One of the best experts on this subject based on the ideXlab platform.
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self rotating photocatalytic system for aqueous cr vi reduction on tio2 nanotube ti mesh substrate
Chemical Engineering Journal, 2013Co-Authors: Youngji Kim, Hyunku Joo, Namguk Her, Yeomin Yoon, Chang Ha Lee, Jaekyung YoonAbstract:Abstract In this study, a self-rotating photocatalytic system is applied to reduce toxic Cr(VI) to non-toxic Cr(III) in aqueous solution under UV irradiation. To overcome the limitation of powdery photocatalysis, a novel approach towards a photocatalytic system for aqueous Cr(VI) reduction including self-rotating TiO 2 nanotubes on a Ti substrate (mesh type) was established. For the preparation of TiO 2 nanotubes on the Ti substrate, Ti mesh (10 cm × 10 cm) was anodized at 50 V to 25 °C for 25 min with mixed electrolytes (NH 4 F–H 2 O–C 2 H 6 O 2 ), and then annealed at 450 °C for 2 h in ambient oxygen at a flow rate of 400 mL min −1 . The fabricated TiO 2 nanotube arrays were uniformly grown on Ti mesh and surface characterizations was performed through the measurements of SEM, XRD, and zeta potential. The HRT (Hydraulic retention time) and rotating speeds were significantly affected by Inlet Flowrate in this reactor being decreased and increased, respectively, with increasing Inlet Flowrate. Hence, the efficiency of photocatalytic Cr(VI) reduction was observed to be highest up to 95% at the 90 rpm. In addition, the rate of Cr(VI) reduction was increased by increasing the number of TiO 2 /Ti meshes.
Chang Ha Lee - One of the best experts on this subject based on the ideXlab platform.
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self rotating photocatalytic system for aqueous cr vi reduction on tio2 nanotube ti mesh substrate
Chemical Engineering Journal, 2013Co-Authors: Youngji Kim, Hyunku Joo, Namguk Her, Yeomin Yoon, Chang Ha Lee, Jaekyung YoonAbstract:Abstract In this study, a self-rotating photocatalytic system is applied to reduce toxic Cr(VI) to non-toxic Cr(III) in aqueous solution under UV irradiation. To overcome the limitation of powdery photocatalysis, a novel approach towards a photocatalytic system for aqueous Cr(VI) reduction including self-rotating TiO 2 nanotubes on a Ti substrate (mesh type) was established. For the preparation of TiO 2 nanotubes on the Ti substrate, Ti mesh (10 cm × 10 cm) was anodized at 50 V to 25 °C for 25 min with mixed electrolytes (NH 4 F–H 2 O–C 2 H 6 O 2 ), and then annealed at 450 °C for 2 h in ambient oxygen at a flow rate of 400 mL min −1 . The fabricated TiO 2 nanotube arrays were uniformly grown on Ti mesh and surface characterizations was performed through the measurements of SEM, XRD, and zeta potential. The HRT (Hydraulic retention time) and rotating speeds were significantly affected by Inlet Flowrate in this reactor being decreased and increased, respectively, with increasing Inlet Flowrate. Hence, the efficiency of photocatalytic Cr(VI) reduction was observed to be highest up to 95% at the 90 rpm. In addition, the rate of Cr(VI) reduction was increased by increasing the number of TiO 2 /Ti meshes.
Hyunku Joo - One of the best experts on this subject based on the ideXlab platform.
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self rotating photocatalytic system for aqueous cr vi reduction on tio2 nanotube ti mesh substrate
Chemical Engineering Journal, 2013Co-Authors: Youngji Kim, Hyunku Joo, Namguk Her, Yeomin Yoon, Chang Ha Lee, Jaekyung YoonAbstract:Abstract In this study, a self-rotating photocatalytic system is applied to reduce toxic Cr(VI) to non-toxic Cr(III) in aqueous solution under UV irradiation. To overcome the limitation of powdery photocatalysis, a novel approach towards a photocatalytic system for aqueous Cr(VI) reduction including self-rotating TiO 2 nanotubes on a Ti substrate (mesh type) was established. For the preparation of TiO 2 nanotubes on the Ti substrate, Ti mesh (10 cm × 10 cm) was anodized at 50 V to 25 °C for 25 min with mixed electrolytes (NH 4 F–H 2 O–C 2 H 6 O 2 ), and then annealed at 450 °C for 2 h in ambient oxygen at a flow rate of 400 mL min −1 . The fabricated TiO 2 nanotube arrays were uniformly grown on Ti mesh and surface characterizations was performed through the measurements of SEM, XRD, and zeta potential. The HRT (Hydraulic retention time) and rotating speeds were significantly affected by Inlet Flowrate in this reactor being decreased and increased, respectively, with increasing Inlet Flowrate. Hence, the efficiency of photocatalytic Cr(VI) reduction was observed to be highest up to 95% at the 90 rpm. In addition, the rate of Cr(VI) reduction was increased by increasing the number of TiO 2 /Ti meshes.
Namguk Her - One of the best experts on this subject based on the ideXlab platform.
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self rotating photocatalytic system for aqueous cr vi reduction on tio2 nanotube ti mesh substrate
Chemical Engineering Journal, 2013Co-Authors: Youngji Kim, Hyunku Joo, Namguk Her, Yeomin Yoon, Chang Ha Lee, Jaekyung YoonAbstract:Abstract In this study, a self-rotating photocatalytic system is applied to reduce toxic Cr(VI) to non-toxic Cr(III) in aqueous solution under UV irradiation. To overcome the limitation of powdery photocatalysis, a novel approach towards a photocatalytic system for aqueous Cr(VI) reduction including self-rotating TiO 2 nanotubes on a Ti substrate (mesh type) was established. For the preparation of TiO 2 nanotubes on the Ti substrate, Ti mesh (10 cm × 10 cm) was anodized at 50 V to 25 °C for 25 min with mixed electrolytes (NH 4 F–H 2 O–C 2 H 6 O 2 ), and then annealed at 450 °C for 2 h in ambient oxygen at a flow rate of 400 mL min −1 . The fabricated TiO 2 nanotube arrays were uniformly grown on Ti mesh and surface characterizations was performed through the measurements of SEM, XRD, and zeta potential. The HRT (Hydraulic retention time) and rotating speeds were significantly affected by Inlet Flowrate in this reactor being decreased and increased, respectively, with increasing Inlet Flowrate. Hence, the efficiency of photocatalytic Cr(VI) reduction was observed to be highest up to 95% at the 90 rpm. In addition, the rate of Cr(VI) reduction was increased by increasing the number of TiO 2 /Ti meshes.