Combined Toxicity of Nano-ZnO and Nano-TiO2: From Single- to Multinanomaterial Systems

2015 ◽  
Vol 49 (13) ◽  
pp. 8113-8123 ◽  
Author(s):  
Tiezheng Tong ◽  
Carolyn M. Wilke ◽  
Jinsong Wu ◽  
Chu Thi Thanh Binh ◽  
John J. Kelly ◽  
...  
Keyword(s):  
Combined Toxicity ◽  
Nano Tio2 ◽  
Nano Zno

scholarly journals Analisis Hasil Sintesis Serbuk TiO2 / ZnO sebagai Lapisan Elektroda untuk Aplikasi Dye-sensitized Solar Cell

2016 ◽  
Vol 15 (2) ◽  
pp. 55
Author(s):  
Lilis Retnaningsih ◽  
Lia Muliani ◽  
Putri Nur Anggraini
Keyword(s):  
Solar Cell ◽  
Dye Sensitized Solar Cell ◽  
Nano Tio2 ◽  
Nano Zno ◽  
Doctor Blade ◽  
Dye Sensitized

Pada penelitian ini telah dilakukan sintesis antara serbuk partikel nano TiO2 dan serbuk partikel nano ZnO menjadi pasta yang akan diaplikasikan sebagai elektroda pada dye-sensitized solar cell (DSSC). Elektroda pada DSSC ini bekerja berdasarkan adsorbsi foton oleh pewarna, elektron yang tereksitasi ditransfer ke TiO2/ZnO yang mempunyai perbandingan berbeda. Dimensi material partikel nano TiO2/ZnO sebagai elektroda sangat penting untuk menghasilkan efisiensi yang lebih tinggi pada DSSC. Sifat ini sangat dipengaruh oleh metoda pabrikasi elektroda TiO2/ZnO dan parameternya. Pada penelitian ini digunakan metoda doctor blade untuk pabrikasi DSSC dan larutan dyes (Z907) sebagai zat pewarna. Tujuan penelitian ini adalah untuk mengetahui pengaruh pencampuran serbuk TiO2 dan serbuk ZnO sebagai elektroda. Teknik pembuatan pasta TiO2/ZnO sebagai elektroda sangat penting untuk menghasilkan efisiensi tinggi pada DSSC. Teknik ini sangat terkait dengan material TiO2/ZnO, metoda pabrikasi, dan parameter pengukurannya. Dalam penelitian ini dibahas hasil karakterisasi XRD pada kedua serbuk TiO2 dan ZnO, hasil SEM pada pencampuran kedua material, hasil pengujian IPCE serta hasil pengukuran effisiensi pada pengujian I - V.  

Preparation and Characterization of PVA-MSA/mCS Bipolar Membrane

2013 ◽  
Vol 634-638 ◽  
pp. 2336-2341
Author(s):  
Hong Fang Xie ◽  
Yan Chun Xiao ◽  
Mei Zhen Zhou ◽  
Shuang Chen ◽  
Zhen Chen
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Contact Angle ◽  
Nano Materials ◽  
Bipolar Membrane ◽  
Nano Tio2 ◽  
Nano Zno ◽  
Cation Layer ◽  
Nano Fe3o4

Polyvinyl Alcohol (PVA) was blent with sodium alginate (SA) and chitosan (CS) respectively in order to enhance flexibility and compatibility of bipolar membrane(BPM). The PVA-mSA/mCS BPM was prepared by a paste method. The PVA/ SA and the PVA / CS was cross-linked by inorganic nano-materials and glutaraldehyde(GA), respectively. The SEM photographs showed the PVA-ZnO-SA/mCS BPM was consists of anion layer and cation layer. The thickness of the BPM was 121μm, the interface of BPM was 5μm. The Electronic spectrum (EDS) indicated that ZnO well-distributed in cation layer. The J-V curve and the AC impedances of PVA-ZnO-SA/mCS BPM showed lower working voltage and smaller membrane impedance. The contact Angle of PVA-ZnO-SA/mCS dropped down from the original 101.01° to 32.65°. Compared of TG curves of the BPMs modified by nano-Fe3O4, nano-TiO2 and nano-ZnO, the surface of the PVA-ZnO-SA/mCS BPM exhibited stronger hydrophilic. The dopping nano-ZnO improved the hydrophilic property, thermal stability and mechanical properties of the PVA-ZnO-SA/mCS.

scholarly journals Combined toxicity of nano-CuO/nano-TiO2 and CuSO4/nano-TiO2 on Escherichia coli in aquatic environments under dark and light conditions

NanoImpact ◽  
2020 ◽  
Vol 19 ◽  
pp. 100250
Author(s):  
Xiaoya Chen ◽  
Carolyn M. Wilke ◽  
Jean-François Gaillard ◽  
Kimberly A. Gray
Keyword(s):  
Escherichia Coli ◽  
Aquatic Environments ◽  
Light Conditions ◽  
Combined Toxicity ◽  
Nano Tio2

Combined Toxicity of Nano-TiO2 and Cd2+ to Scenedesmus obliquus: Effects at Different Concentration Ratios

2021 ◽  
pp. 126354
Author(s):  
Pu Wang ◽  
Lihong Zhao ◽  
Yuxiong Huang ◽  
Wei Qian ◽  
Xiaoshan Zhu ◽  
...  
Keyword(s):  
Scenedesmus Obliquus ◽  
Combined Toxicity ◽  
Nano Tio2 ◽  
Concentration Ratios

scholarly journals Ecotoxicity to Freshwater Organisms and Cytotoxicity of Nanomaterials: Are We Generating Sufficient Data for Their Risk Assessment?

Nanomaterials ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 66
Author(s):  
Tatiana Andreani ◽  
Verónica Nogueira ◽  
Ana Gavina ◽  
Saul Fernandes ◽  
José Luís Rodrigues ◽  
...  
Keyword(s):  
Cell Lines ◽  
Culture Media ◽  
Lemna Minor ◽  
Aquatic Organisms ◽  
Nano Tio2 ◽  
Nano Zno ◽  
Nano Sio2 ◽  
Freshwater Organisms ◽  
Data Limitations ◽  
Potential Risks

The aim of the present study was to investigate the eco-cytotoxicity of several forms of nanomaterials (NM), such as nano-CuO, nano-TiO2, nano-SiO2 and nano-ZnO, on different aquatic species (Raphidocelis subcapitata, Daphnia magna and Lemna minor) following standard protocols and on human cell lines (Caco-2, SV-80, HepG2 and HaCaT). Predicted no-effect concentrations (PNEC) or hazard concentrations for 5% of the species (HC5) were also estimated based on the compilation of data available in the literature. Most of the NM agglomerated strongly in the selected culture media. For the ecotoxicity assays, nano-CuO and nano-ZnO even in particle agglomeration state were the most toxic NM to the freshwater organisms compared to nano-TiO2 and nano-SiO2. Nano-ZnO was the most toxic NM to R. subcapitata and D. magna, while nano-CuO was found to be very toxic to L. minor. Nano-CuO was very toxic to Caco-2 and HepG2 cells, particularly at the highest tested concentrations, while the other NM showed no toxicity to the different cell lines. The HC5 and PNEC values are still highly protective, due to data limitations. However, the present study provides consistent evidence of the potential risks of both nano-CuO and nano-ZnO against aquatic organisms and also their effects on public health.

Chemical Interactions between Nano-ZnO and Nano-TiO2 in a Natural Aqueous Medium

2014 ◽  
Vol 48 (14) ◽  
pp. 7924-7932 ◽  
Author(s):  
Tiezheng Tong ◽  
Kaiqi Fang ◽  
Sara A. Thomas ◽  
John J. Kelly ◽  
Kimberly A. Gray ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Chemical Interactions ◽  
Nano Tio2 ◽  
Nano Zno

scholarly journals Probabilistic environmental risk assessment of five nanomaterials (nano-TiO2, nano-Ag, nano-ZnO, CNT, and fullerenes)

2015 ◽  
Vol 10 (4) ◽  
pp. 436-444 ◽  
Author(s):  
Claudia Coll ◽  
Dominic Notter ◽  
Fadri Gottschalk ◽  
Tianyin Sun ◽  
Claudia Som ◽  
...  
Keyword(s):  
Risk Assessment ◽  
Environmental Risk ◽  
Environmental Risk Assessment ◽  
Nano Tio2 ◽  
Nano Zno
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