SEM and/or TEM are not performed on this product. However, studies have been published by other researcher using both SEM and TEM analysis. Please see the link below to review one such publication:
Interaction of hydrogen with ZnO nanopowders—evidence of hydroxyl group formation
https://iopscience.iop.org/article/10.1088/0957-4484/23/1/015705/pdf
544906
Zinc oxide
nanopowder, ≤50 nm particle size
Synonym(s):
Zinc monoxide, Zinc white
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| Size/SKU | Availability | Price |
|---|---|---|
10 g | Available to ship TODAYfromMILWAUKEE | $51.50 |
50 g | Available to ship TODAYfromMILWAUKEE | $136.00 |
500 g | Available to ship TODAYfromMILWAUKEE | $204.00 |
About This Item
Linear Formula:
ZnO
CAS Number:
Molecular Weight:
81.39
NACRES:
NA.23
PubChem Substance ID:
UNSPSC Code:
12352302
EC Number:
215-222-5
MDL number:
assay
~80% Zn basis
Quality Segment
form
nanopowder
composition
ZnO
reaction suitability
core: zinc
surface area
10-25 m2/g
particle size
≤50 nm
application(s)
glass & ceramic
perovskite solar cells
SMILES string
O=[Zn]
InChI
1S/O.Zn
InChI key
XLOMVQKBTHCTTD-UHFFFAOYSA-N
General description
Zinc oxide (ZnO) nanopowder is a metal oxide that is an n-type direct band semiconducting material with a band gap of 3.37 eV. Its properties include high chemical stability, photostability, and high electrochemical coupling coefficient. It is classified as a semiconductor in group II-VI with bond energy of 60 meV, and high thermo-mechanical stability at ambient temperatures.
Application
ZnO nanopowder can be used for a variety of applications, such as catalysts, optical materials, UV absorbers, gas sensors and cosmetics.
Employed in the preparation of NaZnSiO3OH, a novel chiral framework material which has potential application in ion exchange, adsorption or catalysis.
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This Item | |||
|---|---|---|---|
| description nanopowder, ≤50 nm particle size | description puriss. p.a., ACS reagent, ≥99.0% (KT) | description nanopowder, <50 nm particle size (BET), >97% | description ReagentPlus®, powder, <5 μm particle size, 99.9% |
| assay ~80% Zn basis | assay ≥99.0% (KT) | assay >97% | assay 99.9% |
| reaction suitability core: zinc | reaction suitability - | reaction suitability reagent type: catalyst | reaction suitability - |
| form nanopowder | form powder | form nanopowder | form powder |
| Quality Level 200 | Quality Level 100 | Quality Level 100 | Quality Level 100 |
| surface area 10-25 m2/g | surface area - | surface area >10.8 m2/g | surface area - |
| particle size ≤50 nm | particle size - | particle size <50 nm (BET) | particle size <5 μm |
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Signal Word
Warning
Hazard Codes
Precautionary Statements
Hazard Classifications
Aquatic Acute 1 - Aquatic Chronic 1
Storage Class
11 - Combustible Solids
Flash Point (°F)
Not applicable
Flash Point (°C)
Not applicable
PPE (personal protective equipment)
Eyeshields, Gloves
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What are its Characterization SEM , TEM etc
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Does this nanopowder consist of spherical particles?
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The particle size of this material is ? 50 nm. However, the spherical morphology is not verified.
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How can I determine the shelf life / expiration / retest date of this product?
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If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/418/501/product-dating-information-06-25-mk.pdfHelpful?
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How is shipping temperature determined? And how is it related to the product storage temperature?
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Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf
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May I know its band gap value?
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The band gap value of this material has not been determined. However, information available in the literature suggests this semiconducting material demonstrates a band gap of 3.37 eV at room temperature. Please refer to the link below to review additional information:
https://www.sciencedirect.com/science/article/pii/S003810982030661X#:~:text=The%20band%20gap%20of%20bulk,at%20room%20temperature%20%5B6%5D.Helpful?
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How the ZnO nanoparties product 544906 is synthesised?
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The method of synthesis is considered proprietary. The shareable information for this product can be found on the product page, COA, and SDS.
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Please tell me the "Purity" of the ZnO powder, Product number: 544906?
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The purity of this product is measured by the Zinc content. The compound is approximately 80% Zn as stated in the 'PROPERTIES' section in 'Assay'.
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