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The effect of Ag, Au, Pt, and Pd on the surface properties, photocatalytic activity and toxicity of multicomponent TiO2-based nanomaterials
Environmental Science: Nano ( IF 5.8 ) Pub Date : 2020-09-08 , DOI: 10.1039/d0en00580k Anna Malankowska 1, 2, 3, 4, 5 , Alicja Mikołajczyk 2, 3, 4, 5, 6 , Joanna Mędrzycka 1, 2, 3, 4, 5 , Izabela Wysocka 2, 5, 7, 8, 9 , Grzegorz Nowaczyk 5, 10, 11, 12 , Marcin Jarek 5, 10, 11, 12 , Tomasz Puzyn 2, 3, 4, 5, 6 , Ewa Mulkiewicz 2, 3, 4, 5, 13
Environmental Science: Nano ( IF 5.8 ) Pub Date : 2020-09-08 , DOI: 10.1039/d0en00580k Anna Malankowska 1, 2, 3, 4, 5 , Alicja Mikołajczyk 2, 3, 4, 5, 6 , Joanna Mędrzycka 1, 2, 3, 4, 5 , Izabela Wysocka 2, 5, 7, 8, 9 , Grzegorz Nowaczyk 5, 10, 11, 12 , Marcin Jarek 5, 10, 11, 12 , Tomasz Puzyn 2, 3, 4, 5, 6 , Ewa Mulkiewicz 2, 3, 4, 5, 13
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Multicomponent TiO2-based nanomaterials (MC-NMs) show better physicochemical properties than their individual components or bulk materials. However, the same unique properties that offer innovative applications might also pose unknown risks to human health and the environment. In this context, TiO2-based nanomaterials with a mixture of noble metal precursors (Ag, Au, Pt, and Pd) for large-scale technological applications in air purification were designed, synthesized and characterized. The influence of the type and amount of noble metal precursor on the optical properties and photocatalytic activity of MC-NMs and their toxicity to mouse embryo fibroblast cell line (BALB/3T3), human lung cell line (A549) and human liver cell line (HepG2) was investigated. A hazard assessment of the designed TiO2-based MC-NMs was performed for the first time according to the standards developed under the Joint Research Center and NANoReg2 project (Horizon 2020). The threshold concentration of monometallic NPs that ensure high photocatalytic activity without increasing hazard to humans and the environment was determined. The results indicated that the most effective sample is represented by the 0.1Ag_0.1Au_0.1Pt_1Pd/TiO2 photocatalyst, in which noble metal NPs demonstrated a synergistic effect on photocatalytic activity without increasing the toxicity (safe MC-NMs with 86% toluene degradation after 1 h of irradiation, efficiency 5 times higher than that of pristine TiO2). The obtained results confirm that systematic knowledge and proper manipulation of component concentration may lead to rational design of safe TiO2-based MC-NMs with wide application in air purification under solar energy.
中文翻译：
Ag，Au，Pt和Pd对多组分TiO2基纳米材料的表面性能，光催化活性和毒性的影响
多组分TiO 2基纳米材料（MC-NMs）的物理化学性能优于其单独的组分或块状材料。但是，提供创新应用程序的相同独特属性也可能给人类健康和环境带来未知的风险。在这种情况下，TiO 2设计，合成和表征了用于大规模空气净化技术的含贵金属前体（Ag，Au，Pt和Pd）混合物的有机纳米材料。贵金属前体的类型和数量对MC-NMs光学性质和光催化活性的影响及其对小鼠胚胎成纤维细胞系（BALB / 3T3），人肺细胞系（A549）和人肝细胞系（研究了HepG2）。设计的TiO 2的危害评估基于MC-NM的系统首次根据联合研究中心和NANoReg2项目（Horizon 2020）制定的标准进行。确定了确保高光催化活性而不增加对人类和环境危害的单金属NP的阈值浓度。结果表明，最有效的样品由0.1Ag_0.1Au_0.1Pt_1Pd_1Pd / TiO 2光催化剂代表，其中贵金属NP在不增加毒性的情况下对光催化活性具有协同作用（安全的MC-NMs，甲苯降解后86％照射1 h，效率是原始TiO 2的5倍）。获得的结果证实，系统的知识和对组分浓度的适当控制可导致对安全的基于TiO 2的MC-NMs进行合理的设计，并将其广泛应用于太阳能中的空气净化。
更新日期：2020-11-03
中文翻译：
Ag，Au，Pt和Pd对多组分TiO2基纳米材料的表面性能，光催化活性和毒性的影响
多组分TiO 2基纳米材料（MC-NMs）的物理化学性能优于其单独的组分或块状材料。但是，提供创新应用程序的相同独特属性也可能给人类健康和环境带来未知的风险。在这种情况下，TiO 2设计，合成和表征了用于大规模空气净化技术的含贵金属前体（Ag，Au，Pt和Pd）混合物的有机纳米材料。贵金属前体的类型和数量对MC-NMs光学性质和光催化活性的影响及其对小鼠胚胎成纤维细胞系（BALB / 3T3），人肺细胞系（A549）和人肝细胞系（研究了HepG2）。设计的TiO 2的危害评估基于MC-NM的系统首次根据联合研究中心和NANoReg2项目（Horizon 2020）制定的标准进行。确定了确保高光催化活性而不增加对人类和环境危害的单金属NP的阈值浓度。结果表明，最有效的样品由0.1Ag_0.1Au_0.1Pt_1Pd_1Pd / TiO 2光催化剂代表，其中贵金属NP在不增加毒性的情况下对光催化活性具有协同作用（安全的MC-NMs，甲苯降解后86％照射1 h，效率是原始TiO 2的5倍）。获得的结果证实，系统的知识和对组分浓度的适当控制可导致对安全的基于TiO 2的MC-NMs进行合理的设计，并将其广泛应用于太阳能中的空气净化。
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