Formation of highly crystallized ZnO nanostructures by hot-water treatment of etched Zn foils

2013 ◽  
Vol 91 ◽  
pp. 111-114 ◽  
Author(s):  
Wai Kian Tan ◽  
Khairunisak Abdul Razak ◽  
Zainovia Lockman ◽  
Go Kawamura ◽  
Hiroyuki Muto ◽  
...  
Keyword(s):  
Water Treatment ◽  
Hot Water ◽  
Hot Water Treatment ◽  
Zno Nanostructures

Zinc Oxide Nanostructures Synthesized by a Simple Hot Water Treatment Method for Photocatalytic Degradation of Organic Pollutants in Water

MRS Advances ◽  
2020 ◽  
pp. 1-9
Author(s):  
Ranjitha Kumarapuram Hariharalakshmanan ◽  
Nawzat S. Saadi ◽  
Busra Ergul-Yilmaz ◽  
Khalidah H. Al – Mayalee ◽  
Tansel Karabacak
Keyword(s):  
Water Treatment ◽  
Uv Light ◽  
Treatment Method ◽  
Zinc Powder ◽  
Hot Water ◽  
Hot Water Treatment ◽  
Zno Nanostructures ◽  
Zno Nanostructure ◽  
Oxide Nanostructures ◽  
Metal Oxide Nanostructures

Abstract The use of zinc oxide (ZnO) nanostructures as a photocatalyst for the degradation of organic pollutants in water has received significant attention over the recent years. However, synthesis methods for producing ZnO nanostructures are generally costly, complicated, and hazardous to the environment. In this work, we demonstrate the synthesis of ZnO nanostructures by a simple hot water treatment (HWT) method and the photocatalytic activity of the hence produced nanostructures. HWT is a one-step, low-cost, eco-friendly, and scalable nanostructure growth method. By HWT, various metal-oxide nanostructures can be produced simply by the interaction of metals with hot water without the need for any chemical additives in the solution. Growth of metal-oxide nanostructures by HWT involves the formation of metal-oxides and their release from the surface of the metal into water, the migration of the metal-oxides in water, and their re-deposition at a different part of the metallic surface, which initiates the growth of nanostructures. In this study, we used zinc powder and plates for producing the ZnO nanostructures by HWT in DI water at 75°C. Scanning electron microscopy and X-ray diffraction were utilized to verify the formation of ZnO nanostructures. Zinc plates produced a suspension of ZnO nanostructures in water, while on the other hand, zinc powder resulted in ZnO nanostructures grown on the powder surface as well as standalone ZnO nanostructures also mixed in water. We used these nanostructures + water suspensions for our photocatalytic degradation studies. Methylene blue (MB) was used as a model organic pollutant. We mixed the ZnO nanostructure suspension with MB and exposed it to UV light. The degradation of MB was observed by measuring its absorbance values using a UV-Visible spectrophotometer over a period of 4 hours. We observed a 20% decrease in the concentration of MB in 4 hours when nanostructured Zn/ZnO powder suspension was used, and a 30% decrease was achieved when ZnO nanostructure-only suspension produced from zinc plates was used. MB alone was also exposed to UV light for the same period as a control experiment, and we did not observe any significant decrease in its concentration. These results indicate that the hot water treatment method presents a very simple, cost-effective, scalable, and eco–friendly alternative for the synthesis of ZnO nanostructures for photocatalytic water treatment applications.

Studies on Effect of Zinc Oxide (ZnO) Nanostructures Morphology by Modification of Sol-Gel Solution

2015 ◽  
Vol 1125 ◽  
pp. 106-110 ◽  
Author(s):  
Ili Liyana Khairunnisa Kamardin ◽  
Ainun Rahmahwati Ainuddin
Keyword(s):  
Thin Films ◽  
Zinc Oxide ◽  
Water Treatment ◽  
Biomedical Application ◽  
Sol Gel ◽  
Zno Nanorods ◽  
Hot Water ◽  
Zno Thin Films ◽  
Hot Water Treatment ◽  
Zno Nanostructures

Zinc Oxide (ZnO) known as wide band gap semiconductor with large excitation energy 60 meV, noncentral symmetry, piezoelectric and biocompatible for biomedical application are the unique characteristic that attract many researcher’s attention on ZnO nanostructure synthesis and physical properties. ZnO thin films were deposited on Si Glass substrate by a sol-gel process. The starting solution were prepare by dissolved zinc acetate dehydrate (ZnAc) and diethanolamine (DEA) in water (H2O) and 2-propanol (2-PrOH). 0 to 60 drops of NaOH were dropped into 100 ml sol-gel solution to study effect of sol-gel modification. ZnO thin films were obtained after preheating the spin coated thin films at 100 °C for 10 minutes after each coating. The coated substrates were undergone for Hot Water Treatment (HWT) process at 90 °C for 6 hours to grow ZnO nanostructures. The effects of sol-gel modification by drop of NaOH into the solution were studied. ZnO nanorods and nanoflakes were obtained after hot water treated at 90 °C for 6 hours with different amount of NaOH dropped directly in the sol-gel solution. On the basis of the changes in morphology and microstructure induced by hot water treatment, it is concluded that the amount of NaOH dropped into sol-gel effected morphology of ZnO growth.

Study on Optimum Low Temperature for ZnO Formation via Hot Water Treatment

2015 ◽  
Vol 1087 ◽  
pp. 272-275 ◽  
Author(s):  
Ili Liyana Khairunnisa Kamardin ◽  
Ainun Rahmahwati Ainuddin
Keyword(s):  
Water Treatment ◽  
Low Temperature ◽  
Surface Oxidation ◽  
Xrd Analysis ◽  
Treatment Temperature ◽  
Hot Water ◽  
Hot Water Treatment ◽  
Zno Nanostructures ◽  
Sem Morphology

The effects of surface oxidation of etched metallic Zn foils by hot water treatment for variable times and temperature investigated. ZnO nanostructures were obtained after undergoing hot water treatment at 50°C and 90°C for 2 to 24 hours. The SEM morphology showed ZnO nanostar-like and nanoneedle-like were observed with different hot water treatment temperature. XRD analysis confirmed the existing of ZnO nanostar-like and nanoneedle-like in a hexagonal wurzite structure. Growth of peak on (002) direction confirmed ZnO crystals are columnar in shape and anisotropic with wurzite structure oriented along c-axis. On the basis of the changes in morphology and microstructure induced by hot water treatment, it is concluded that the formation of ZnO are promising at low temperature.

Blue-emitting photoluminescence of rod-like and needle-like ZnO nanostructures formed by hot-water treatment of sol–gel derived coatings

2015 ◽  
Vol 158 ◽  
pp. 44-49 ◽  
Author(s):  
Wai Kian Tan ◽  
Go Kawamura ◽  
Hiroyuki Muto ◽  
Khairunisak Abdul Razak ◽  
Zainovia Lockman ◽  
...  
Keyword(s):  
Water Treatment ◽  
Sol Gel ◽  
Hot Water ◽  
Hot Water Treatment ◽  
Zno Nanostructures

Silver nanoparticles eliminate Xanthomonas campestris pv. campestris in cabbage seeds more efficiently than hot water treatment

2021 ◽  
Vol 27 ◽  
pp. 102284
Author(s):  
Jakub Pečenka ◽  
Zuzana Bytešníková ◽  
Tomáš Kiss ◽  
Eliška Peňázová ◽  
Miroslav Baránek ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Water Treatment ◽  
Xanthomonas Campestris ◽  
Hot Water ◽  
Hot Water Treatment ◽  
Xanthomonas Campestris Pv Campestris

Nanostructured antibacterial aluminum foil produced by hot water treatment against E. coli in meat

MRS Advances ◽  
2021 ◽  
Author(s):  
Quinshell Smith ◽  
Kenneth Burnett ◽  
Nawzat Saadi ◽  
Khulud Alotaibi ◽  
Atikur Rahman ◽  
...  
Keyword(s):  
Water Treatment ◽  
Aluminum Foil ◽  
Hot Water ◽  
Hot Water Treatment ◽  
E Coli

scholarly journals Morphological Study of Zinc-Oxide Nanorods Grown by Hot Water Treatment Suitable for Solar Cells Conversion Efficiency Enhancement

2020 ◽  
Author(s):  
Mohammad Khairul Basher ◽  
S. M. Shah Riyadh ◽  
Md. Khalid Hossain ◽  
Mahmudul Hassan ◽  
Md. Abdur Rafiq Akand ◽  
...  
Keyword(s):  
Zinc Oxide ◽  
Solar Cells ◽  
Water Treatment ◽  
Conversion Efficiency ◽  
Zno Nanorods ◽  
Hot Water ◽  
Zinc Oxide Nanorods ◽  
Hot Water Treatment ◽  
Time Duration ◽  
Zinc Surface

Zinc-oxide (ZnO) nanostructures including nanorods are currently considered as a pioneer research of interest world-wide due to their excellent application potentials in various applied fields especially for the improvement of energy harvesting photovoltaic solar cells (PSC). We report on the growth and morphological properties of zinc-oxide (ZnO) nanorods grown on the surface of plain zinc (non-etched and chemically etched) plates by using a simple, economical, and environment-friendly technique. We apply hot water treatment (HWT) technique to grow the ZnO nanorods and varies the process parameters, such as temperature and the process time duration. The morphological, and elemental analysis confirm the agglomeration of multiple ZnO nanorods with its proper stoichiometry. The obtained nanostructures for different temperatures with different time duration showed the variation in uniformity, density, thickness and nanonorods size. The ZnO nanorods produced on the etched zinc surface were found thicker and uniform as compared to those grown on the non-etched zinc surface. This chemically etched Zinc plates preparation can be an easy solution to grow ZnO nanorods with high density and uniformity suitable for PSC applications such as to enhance the energy conversion efficiency of the photovoltaic (PV) solar cells towards the future sustainable green earth.

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