SKU: 16898668249

Sulfur quantum dots

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Description

Sulfur quantum dotsProduct Name Name: a>Sulfur quantum dots Product Overview Recently, the synthesis and biological performance research of metal free single element quantum dots have received attention from researchers, such as carbon quantum dots (CQDs), phosphorus quantum dots (PQDs), silicon quantum dots (SiQDs), sulfur quantum dots (SQDs), etc. Sulfur quantum dots have become a new type of material studied in recent years due to their abundant raw material sources,

Product Name

Name:a>Sulfur quantum dots

Product Overview

 

Recently, the synthesis and biological performance research of metal free single element quantum dots have received attention from researchers, such as carbon quantum dots (CQDs), phosphorus quantum dots (PQDs), silicon quantum dots (SiQDs), sulfur quantum dots (SQDs), etc. Sulfur quantum dots have become a new type of material studied in recent years due to their abundant raw material sources, non toxicity, good chemical stability, and excellent natural antibacterial activity.


Technical Parameter

 

Luminous color:Blue light

at.%:~3.8%

Concentration: 28 mg/ml

Solvent:water

 

Product Features

 

Excellent optical performance: Sulfur quantum dots exhibit unique fluorescence properties, such as large Stokes shift, good stability, and emission peaks that do not vary with excitation wavelength.

Its quantum yield can reach 3.8%, and it has good dispersibility and optical stability in water.

Good biocompatibility: Sulfur quantum dots are widely used in cell imaging and biomedical research due to their low toxicity, no heavy metal pollution, and good biocompatibility.


Application Fields

 

Fluorescent probe detection: Sulfur quantum dots, as fluorescent probes, can detect heavy metal ions such as PB (II) and BI (III) with low detection limits and good sensitivity.

Cell imaging: In the biomedical field, sulfur quantum dots are used for cell labeling and imaging. Due to their high fluorescence intensity and good biocompatibility, they can clearly observe the internal structure and dynamic processes of cells.

Optoelectronic conversion: The application of sulfur quantum dots in optoelectronic conversion devices has also received widespread attention, and their excellent optical properties make them ideal materials for optoelectronic devices.

Chemical catalysis: Sulfur quantum dots exhibit excellent performance in chemical catalytic reactions, and their unique optical properties and high stability make them of great value in catalyst design and optimization.

Environmental sensing: Sulfur quantum dots have also been widely used in environmental monitoring and pollutant detection, and their high sensitivity and specificity make them ideal sensing materials.


Related Information

 

Attention: Sulfur Quantum Dots cannot be mixed with acidic medium.Before dilution, best doing some dialysis treatment, dialysis the high concentration of alkali and other ions in the sample with low concentration of alkali dialysis, and then diluted. The sample can be diluted directly in alkaline solvent if we cannot do dialysis treatment. 0.1M NaOH or KOH solution is recommended to be diluted.

The sulfur quantum dots have large aggregates (20 to 80nm), which are composed of small nanoparticles smaller than 5nm.

Please e-mail for the detailed characterization data.

E-mail:[email protected]

 

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SKU: 16898668249

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4.0 ★★★★★
Based on 12 reviews
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Verified Purchase
tim zaharson
Houston, US
★★★★★ 5
i would recommend these shoes
Size: 11, Color: Black White 05
great shoes for the price. very comfortable...
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
A
Verified Purchase
Albert Alvarado
Fort Morgan, US
★★★★★ 5
Great Fit, Lightweight, and Totally Quiet
Size: 11, Color: New Black05
Great fit and very comfortable once you pick the right size. Lightweight, breathable, and completely silent on hard floors. No squeaks or “suction” sounds like some reviews claimed. Normal packaging, normal opening, no issues at all. Excellent value for the price.
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Reviewed in the United States on May 18, 2026
V
Verified Purchase
Vince Salvino
San Leandro, US
★★★★★ 5
Most comfortable shoes I've ever worn
Size: 11, Color: New Black05
First off, I was not expecting much buying a no-name shoe online, especially for the price. Boy was I in for a surprise... I've owned these for almost a full year, and can confidently say these are the most comfortable shoes I've ever worn. I normally wear a size 11 and these fit me perfectly. Prior to this the most comfortable shoes I had were some Cole Haans with the Nike air technology. These shoes are so lightweight, so comfortable, I can wear them all day long without feeling a thing. Whenever I (rarely) need to wear a different pair of shoes, I am immediately reminded of how much I used to hate wearing shoes and couldn't wait to take them off. Based on the price, I expected them to wear down quickly. However they are still going strong. Running, hiking, long walks, biking, worn to office / casual events. These shoes have been soaked in mud multiple times, but clean up easily by just throwing them in the washing machine and then the dryer. The soles and the insoles have both worn down a bit over the past year; at this rate I expect to get 1.5 to 2 years out of them before needing to be replaced. So far I must have put at least a thousand miles on these shoes based on how much I wear them. They look good too. I have the all-black pair, and they look decent with jeans and a button up shirt for a night out, but also look natural in an athletic setting with shorts and no socks. Very versatile and subtle. Now for the cons, which are minor. The pattern on the bottom of the sole is prone to some squeaking/suction sounds at first. However after about a month some of the ridges wore down just enough that it was no longer a problem. Second: they are not as breathable as I would have liked. For example, when running or biking, you don't feel any air on your feet. Wearing them out in the sun on a hot summer day, your feet will get a bit stuffy. In fact the fabric is woven tight enough that I wear them in the winter and in the rain, and don't get too cold or wet. So I do wish they made a more breathable version for summer time use. All that being said, these are still the best pair of shoes I've ever had. Ultra light weight, comfortable, and can be worn all day long without feeling any fatigue whatsoever. --- UPDATE: It's been 1 year and 9 months, and the soles on these shoes are fully worn out and ready for replacement. Considering I've put between 1,000-2,000 miles of walking in these, that's pretty good. If anyone from Feethit is reading this, here are my top suggestions to perfect this shoe: 1) Easy fix - change the tread pattern. The current pattern causes suction cup effect on hard floors until it starts to wear down. Simply add some gaps in the circle pattern in the tread and it will remedy that issue. 2) Most importantly, put a thin piece of durable rubber on the bottom of the sole. The sole does wear down after some time and lose traction, especially on smooth wet floors (e.g. in the rain, in a kitchen, etc.). A thin piece of durable rubber would add more traction and also extend the life of the cushion-like sole (which is fantastic, don't change it!). This would easily be worth an extra $5-$10 in the price.
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Reviewed in the United States on August 4, 2023
T
Verified Purchase
T. Archer
Dallas, US
★★★★★ 4
Nice shoes, despite the squeak and inconsistent sizing
Size: 12, Color: Black White 05
Excellent shoes at this price point. Quite comfortable. They do tend to have a nasty squeak on tile floors, sort of like a suction cup being engaged and disengaged. I bought the navy blue and went back and bought the black. I have to say that the size varied greatly. With the second pair, I have to be sure to wear thin socks and even then, I struggle to get them on, despite having an extremely narrow foot. I'm not sure that a person with an average width foot could wear them. Buyer beware. You may need to go up a size.
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Reviewed in the United States on February 13, 2026
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Verified Purchase
Bob AIM
Charlottesville, US
★★★★★ 5
My second pair and what they look like after 2 years
Size: 10.5, Color: New Black05, Size: 10.5, Color: New Black05
I wanted to write a review on these shoes. This is my second purchase. I bought the first pair 2 years ago and the bottoms started wearing out, after all it was 2 years. I read reviews saying that they did not hold up well. My pictures show before and after. The reason I purchased again is because I am impressed with the quality and comfort for the money.
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Reviewed in the United States on May 9, 2026

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