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titanium dioxide tio2 nanoparticles  (Evonik)

 
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    Evonik titanium dioxide tio2 nanoparticles
    The compartmentalized enzyme‐photocatalyst system for sustainable coenzyme regeneration. (a) The glucose dehydrogenase‐loaded silica nanoparticles (GDH@SiNPs) and <t>TiO</t> <t>2</t> nanoparticle system complete the NAD + /NADH cycle, enabling continuous coenzyme regeneration while preventing enzyme inactivation by reactive oxygen species generated during photocatalysis. (b) Bare GDH is easily deactivated by the reaction of TiO 2 nanoparticles. (c) The silica matrix quenched ROS before reaching the enzyme core due to their short half‐life in an aqueous environment, effectively shielding GDH from oxidative inactivation.
    Titanium Dioxide Tio2 Nanoparticles, supplied by Evonik, used in various techniques. Bioz Stars score: 86/100, based on 1 PubMed citations. ZERO BIAS - scores, article reviews, protocol conditions and more
    https://www.bioz.com/product/tio2+nanoparticles/pmc13206201-136-0-7?v=Evonik
    Average 86 stars, based on 1 article reviews
    titanium dioxide tio2 nanoparticles - by Bioz Stars, 2026-08
    86/100 stars

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    1) Product Images from "Biomimetic Compartmentalization of Enzymes for Sustainable Coenzyme Recycling in Oxidative Photocatalysis"

    Article Title: Biomimetic Compartmentalization of Enzymes for Sustainable Coenzyme Recycling in Oxidative Photocatalysis

    Journal: Chembiochem

    doi: 10.1002/cbic.70381

    The compartmentalized enzyme‐photocatalyst system for sustainable coenzyme regeneration. (a) The glucose dehydrogenase‐loaded silica nanoparticles (GDH@SiNPs) and TiO 2 nanoparticle system complete the NAD + /NADH cycle, enabling continuous coenzyme regeneration while preventing enzyme inactivation by reactive oxygen species generated during photocatalysis. (b) Bare GDH is easily deactivated by the reaction of TiO 2 nanoparticles. (c) The silica matrix quenched ROS before reaching the enzyme core due to their short half‐life in an aqueous environment, effectively shielding GDH from oxidative inactivation.
    Figure Legend Snippet: The compartmentalized enzyme‐photocatalyst system for sustainable coenzyme regeneration. (a) The glucose dehydrogenase‐loaded silica nanoparticles (GDH@SiNPs) and TiO 2 nanoparticle system complete the NAD + /NADH cycle, enabling continuous coenzyme regeneration while preventing enzyme inactivation by reactive oxygen species generated during photocatalysis. (b) Bare GDH is easily deactivated by the reaction of TiO 2 nanoparticles. (c) The silica matrix quenched ROS before reaching the enzyme core due to their short half‐life in an aqueous environment, effectively shielding GDH from oxidative inactivation.

    Techniques Used: Generated

    Oxidative stress resistance, and recycling of NAD + and NADH by alternating addition of glucose in the dark and irradiation with UV light. (a) NAD + and NADH conversion in this study. (b) Monitoring of GDH activity in the presence of ROS (generated by TiO 2 nanoparticles under UV light irradiation) ( n = 3). (c) Recycling of NAD + and NADH using GDH@SiNPs and TiO 2 nanoparticles ( n = 3). (d) Recycling of NAD + and NADH using native GDH and TiO 2 nanoparticles. For c and d, an increase in the y ‐axis value indicates NADH accumulation by GDH‐catalyzed reduction, while a decrease reflects NAD + regeneration by TiO 2 ‐mediated oxidation ( n = 3).
    Figure Legend Snippet: Oxidative stress resistance, and recycling of NAD + and NADH by alternating addition of glucose in the dark and irradiation with UV light. (a) NAD + and NADH conversion in this study. (b) Monitoring of GDH activity in the presence of ROS (generated by TiO 2 nanoparticles under UV light irradiation) ( n = 3). (c) Recycling of NAD + and NADH using GDH@SiNPs and TiO 2 nanoparticles ( n = 3). (d) Recycling of NAD + and NADH using native GDH and TiO 2 nanoparticles. For c and d, an increase in the y ‐axis value indicates NADH accumulation by GDH‐catalyzed reduction, while a decrease reflects NAD + regeneration by TiO 2 ‐mediated oxidation ( n = 3).

    Techniques Used: Irradiation, Activity Assay, Generated

    Cell protection of GDH@SiNPs against TiO2‐triggered ROS stress. (a) GDH@SiNPs can mitigate oxidative stress by continuously supplying NADH, which serves as a direct ROS scavenger. (b) Cell viability measured by CCK‐8 assay of HeLa cells in the presence of GDH@SiNPs and TiO2 nanoparticles under UV light irradiation. Effective cell protection of the GDH@SiNPs was achieved by enzymatic NADH production ( n = 4). Data are presented as mean ± SD ( n = 4). Statistical significance was determined by one‐way ANOVA followed by Tukey's post‐hoc test. Significant differences are indicated as **( p < 0.01), and ***( p < 0.001).
    Figure Legend Snippet: Cell protection of GDH@SiNPs against TiO2‐triggered ROS stress. (a) GDH@SiNPs can mitigate oxidative stress by continuously supplying NADH, which serves as a direct ROS scavenger. (b) Cell viability measured by CCK‐8 assay of HeLa cells in the presence of GDH@SiNPs and TiO2 nanoparticles under UV light irradiation. Effective cell protection of the GDH@SiNPs was achieved by enzymatic NADH production ( n = 4). Data are presented as mean ± SD ( n = 4). Statistical significance was determined by one‐way ANOVA followed by Tukey's post‐hoc test. Significant differences are indicated as **( p < 0.01), and ***( p < 0.001).

    Techniques Used: CCK-8 Assay, Irradiation



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    Image Search Results


    The compartmentalized enzyme‐photocatalyst system for sustainable coenzyme regeneration. (a) The glucose dehydrogenase‐loaded silica nanoparticles (GDH@SiNPs) and TiO 2 nanoparticle system complete the NAD + /NADH cycle, enabling continuous coenzyme regeneration while preventing enzyme inactivation by reactive oxygen species generated during photocatalysis. (b) Bare GDH is easily deactivated by the reaction of TiO 2 nanoparticles. (c) The silica matrix quenched ROS before reaching the enzyme core due to their short half‐life in an aqueous environment, effectively shielding GDH from oxidative inactivation.

    Journal: Chembiochem

    Article Title: Biomimetic Compartmentalization of Enzymes for Sustainable Coenzyme Recycling in Oxidative Photocatalysis

    doi: 10.1002/cbic.70381

    Figure Lengend Snippet: The compartmentalized enzyme‐photocatalyst system for sustainable coenzyme regeneration. (a) The glucose dehydrogenase‐loaded silica nanoparticles (GDH@SiNPs) and TiO 2 nanoparticle system complete the NAD + /NADH cycle, enabling continuous coenzyme regeneration while preventing enzyme inactivation by reactive oxygen species generated during photocatalysis. (b) Bare GDH is easily deactivated by the reaction of TiO 2 nanoparticles. (c) The silica matrix quenched ROS before reaching the enzyme core due to their short half‐life in an aqueous environment, effectively shielding GDH from oxidative inactivation.

    Article Snippet: Titanium dioxide (TiO2) nanoparticles were purchased from EVONIK (Essen, Germany).

    Techniques: Generated

    Oxidative stress resistance, and recycling of NAD + and NADH by alternating addition of glucose in the dark and irradiation with UV light. (a) NAD + and NADH conversion in this study. (b) Monitoring of GDH activity in the presence of ROS (generated by TiO 2 nanoparticles under UV light irradiation) ( n = 3). (c) Recycling of NAD + and NADH using GDH@SiNPs and TiO 2 nanoparticles ( n = 3). (d) Recycling of NAD + and NADH using native GDH and TiO 2 nanoparticles. For c and d, an increase in the y ‐axis value indicates NADH accumulation by GDH‐catalyzed reduction, while a decrease reflects NAD + regeneration by TiO 2 ‐mediated oxidation ( n = 3).

    Journal: Chembiochem

    Article Title: Biomimetic Compartmentalization of Enzymes for Sustainable Coenzyme Recycling in Oxidative Photocatalysis

    doi: 10.1002/cbic.70381

    Figure Lengend Snippet: Oxidative stress resistance, and recycling of NAD + and NADH by alternating addition of glucose in the dark and irradiation with UV light. (a) NAD + and NADH conversion in this study. (b) Monitoring of GDH activity in the presence of ROS (generated by TiO 2 nanoparticles under UV light irradiation) ( n = 3). (c) Recycling of NAD + and NADH using GDH@SiNPs and TiO 2 nanoparticles ( n = 3). (d) Recycling of NAD + and NADH using native GDH and TiO 2 nanoparticles. For c and d, an increase in the y ‐axis value indicates NADH accumulation by GDH‐catalyzed reduction, while a decrease reflects NAD + regeneration by TiO 2 ‐mediated oxidation ( n = 3).

    Article Snippet: Titanium dioxide (TiO2) nanoparticles were purchased from EVONIK (Essen, Germany).

    Techniques: Irradiation, Activity Assay, Generated

    Cell protection of GDH@SiNPs against TiO2‐triggered ROS stress. (a) GDH@SiNPs can mitigate oxidative stress by continuously supplying NADH, which serves as a direct ROS scavenger. (b) Cell viability measured by CCK‐8 assay of HeLa cells in the presence of GDH@SiNPs and TiO2 nanoparticles under UV light irradiation. Effective cell protection of the GDH@SiNPs was achieved by enzymatic NADH production ( n = 4). Data are presented as mean ± SD ( n = 4). Statistical significance was determined by one‐way ANOVA followed by Tukey's post‐hoc test. Significant differences are indicated as **( p < 0.01), and ***( p < 0.001).

    Journal: Chembiochem

    Article Title: Biomimetic Compartmentalization of Enzymes for Sustainable Coenzyme Recycling in Oxidative Photocatalysis

    doi: 10.1002/cbic.70381

    Figure Lengend Snippet: Cell protection of GDH@SiNPs against TiO2‐triggered ROS stress. (a) GDH@SiNPs can mitigate oxidative stress by continuously supplying NADH, which serves as a direct ROS scavenger. (b) Cell viability measured by CCK‐8 assay of HeLa cells in the presence of GDH@SiNPs and TiO2 nanoparticles under UV light irradiation. Effective cell protection of the GDH@SiNPs was achieved by enzymatic NADH production ( n = 4). Data are presented as mean ± SD ( n = 4). Statistical significance was determined by one‐way ANOVA followed by Tukey's post‐hoc test. Significant differences are indicated as **( p < 0.01), and ***( p < 0.001).

    Article Snippet: Titanium dioxide (TiO2) nanoparticles were purchased from EVONIK (Essen, Germany).

    Techniques: CCK-8 Assay, Irradiation