Near-infrared heavy-metal-free SnSe/ZnSe quantum dots for efficient photoelectrochemical hydrogen generation

Nanoscale ◽  
2021 ◽  
Vol 13 (6) ◽  
pp. 3519-3527
Author(s):  
Shihuan Ren ◽  
Maorong Wang ◽  
Xiaohan Wang ◽  
Guangting Han ◽  
Yuanming Zhang ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Quantum Dots ◽  
Hydrogen Evolution ◽  
Near Infrared ◽  
Hydrogen Generation ◽  
Photocurrent Density ◽  
Metal Free

We synthesized Zn-stabilized SnSe (SnSe/ZnSe) QDs with sizes from 5.7 nm to 10 nm. SnSe/ZnSe QDs were used for an efficient PEC hydrogen evolution. A saturated photocurrent density (J) as high as ∼7 mA cm−2 was obtained.

Heavy metal-free, near-infrared colloidal quantum dots for efficient photoelectrochemical hydrogen generation

Nano Energy ◽  
2017 ◽  
Vol 31 ◽  
pp. 441-449 ◽  
Author(s):  
Xin Tong ◽  
Yufeng Zhou ◽  
Lei Jin ◽  
Kaustubh Basu ◽  
Rajesh Adhikari ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Quantum Dots ◽  
Near Infrared ◽  
Hydrogen Generation ◽  
Colloidal Quantum Dots ◽  
Metal Free

Near-Infrared, Heavy Metal-Free Colloidal “Giant” Core/Shell Quantum Dots

2017 ◽  
Vol 8 (2) ◽  
pp. 1701432 ◽  
Author(s):  
Xin Tong ◽  
Xiang-Tian Kong ◽  
Yufeng Zhou ◽  
Fabiola Navarro-Pardo ◽  
Gurpreet Singh Selopal ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Quantum Dots ◽  
Near Infrared ◽  
Core Shell ◽  
Metal Free

Synthesis of near-infrared silver-indium-sulfide (AgInS2) quantum dots as heavy-metal free photosensitizer for solar cell applications

2011 ◽  
Vol 515 (4-6) ◽  
pp. 254-257 ◽  
Author(s):  
Kai-Chun Cheng ◽  
Wing-Cheung Law ◽  
Ken-Tye Yong ◽  
Jeremy S. Nevins ◽  
David F. Watson ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Quantum Dots ◽  
Solar Cell ◽  
Near Infrared ◽  
Indium Sulfide ◽  
Metal Free

scholarly journals Luminescence Detection of Latent Fingermarks on Non-porous Surfaces with Heavy-Metal-Free Quantum Dots

2020 ◽  
Author(s):  
Sorour Shahbazi ◽  
Rhiannon Boseley ◽  
Braden Grant ◽  
Dechao Chen ◽  
Thomas Becker ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Quantum Dots ◽  
Background Noise ◽  
Near Infrared ◽  
Adhesive Tape ◽  
Fast Method ◽  
Metal Free ◽  
Green Development ◽  
Porous Surfaces ◽  
Large Background

<p>Current and proposed nanoparticle-based techniques for development of latent fingermarks suffer a number of drawbacks such as complicated, multi-step and time-consuming procedures, batch-to-batch variability, expensive reagents, large background noise and toxicity. Here, we introduce a promising green development technique based on heavy-metal-free quantum dots (QD) for the detection of latent fingermarks on non-porous surfaces. Red-near infrared luminescent Cu-In-S/ZnS core-shell QDs solution was produced in large scales using a water-based, simple and fast method using N-acetyl-cysteine as a biocompatible surfactant to coat the particles. The coated QDs were applied to the successful development of latent fingermarks deposited on a variety of surfaces, including highly patterned polymer banknotes and the sticky side of adhesive tape.<br></p>

scholarly journals Red-Near Infrared Luminescence Detection of Latent Fingermarks with Heavy-Metal-Free Quantum Dots

2019 ◽  
Author(s):  
Sorour Shahbazi ◽  
Braden Grant ◽  
Dechao Chen ◽  
Thomas Becker ◽  
Guohua Jia ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Quantum Dots ◽  
Background Noise ◽  
Near Infrared ◽  
Adhesive Tape ◽  
Fast Method ◽  
Metal Free ◽  
Infrared Luminescence ◽  
Green Development ◽  
Large Background

<p>Current and proposed nanoparticle-based techniques for development of latent fingermarks suffer a number of drawbacks such as complicated, multi-step and time-consuming procedures, batch-to-batch variability, expensive reagents, large background noise and toxicity. Here, we introduce a promising green development technique based on heavy-metal-free quantum dots (QD) for the detection of latent fingermarks on non-porous surfaces. Red-near infrared luminescent Cu-In-S/ZnS core-shell QDs solution was produced in large scales using a water-based, simple and fast method using N-acetyl-cysteine as a biocompatible surfactant to coat the particles. The coated QDs were applied to the successful development of latent fingermarks deposited on a variety of surfaces, including highly patterned polymer banknotes and the sticky side of adhesive tape.<br></p>

Tuning the composition of heavy metal-free quaternary quantum dots for improved photoelectrochemical performance

2021 ◽  
Author(s):  
Cheng Liu ◽  
Xin Tong ◽  
Ali Imran Channa ◽  
Xin Li ◽  
Zhihang Long ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Quantum Dots ◽  
Optical Properties ◽  
Hydrogen Generation ◽  
Photoelectrochemical Performance ◽  
Metal Free

The optical properties of heavy metal-free quaternary CuZnInS3 QDs can be optimized by tuning the composition, which is promising for improving the efficiency of QDs-PEC hydrogen generation.

scholarly journals Luminescence Detection of Latent Fingermarks on Non-porous Surfaces with Heavy-Metal-Free Quantum Dots

2020 ◽  
Author(s):  
Sorour Shahbazi ◽  
Rhiannon Boseley ◽  
Braden Grant ◽  
Dechao Chen ◽  
Thomas Becker ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Quantum Dots ◽  
Background Noise ◽  
Near Infrared ◽  
Adhesive Tape ◽  
Fast Method ◽  
Metal Free ◽  
Green Development ◽  
Porous Surfaces ◽  
Large Background

<p>Current and proposed nanoparticle-based techniques for development of latent fingermarks suffer a number of drawbacks such as complicated, multi-step and time-consuming procedures, batch-to-batch variability, expensive reagents, large background noise and toxicity. Here, we introduce a promising green development technique based on heavy-metal-free quantum dots (QD) for the detection of latent fingermarks on non-porous surfaces. Red-near infrared luminescent Cu-In-S/ZnS core-shell QDs solution was produced in large scales using a water-based, simple and fast method using N-acetyl-cysteine as a biocompatible surfactant to coat the particles. The coated QDs were applied to the successful development of latent fingermarks deposited on a variety of surfaces, including highly patterned polymer banknotes and the sticky side of adhesive tape.<br></p>

Solution-processed Self-powered Near-Infrared Photodetectors of Toxic Heavy Metal-Free AgAuSe Colloidal Quantum Dots

2021 ◽  
Author(s):  
Zan Wang ◽  
Fenghua Liu ◽  
Yunjiao Gu ◽  
Yigu Hu ◽  
Weiping Wu
Keyword(s):  
Heavy Metal ◽  
Quantum Dots ◽  
Near Infrared ◽  
Colloidal Quantum Dots ◽  
Toxic Heavy Metal ◽  
Solution Processed ◽  
Metal Free ◽  
Photoelectric Properties ◽  
Self Powered ◽  
First Time

Self-powered, high detectivity, solution-processed near-infrared (NIR) quantum dot photodetectors based on novel alloyed AgAuSe quantum dots (QDs) are fabricated for the first time and their photoelectric properties are explored. AgAuSe...

scholarly journals Quantum Dots: Near-Infrared, Heavy Metal-Free Colloidal “Giant” Core/Shell Quantum Dots (Adv. Energy Mater. 2/2018)

2018 ◽  
Vol 8 (2) ◽  
pp. 1870010 ◽  
Author(s):  
Xin Tong ◽  
Xiang-Tian Kong ◽  
Yufeng Zhou ◽  
Fabiola Navarro-Pardo ◽  
Gurpreet Singh Selopal ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Quantum Dots ◽  
Near Infrared ◽  
Core Shell ◽  
Metal Free ◽  
Energy Mater

scholarly journals Luminescence Detection of Latent Fingermarks with Heavy-Metal-Free Quantum Dots

2019 ◽  
Author(s):  
Sorour Shahbazi ◽  
Rhiannon Boseley ◽  
Braden Grant ◽  
Dechao Chen ◽  
Thomas Becker ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Quantum Dots ◽  
Background Noise ◽  
Near Infrared ◽  
Adhesive Tape ◽  
Fast Method ◽  
Successful Development ◽  
Metal Free ◽  
Green Development ◽  
Large Background

<p>Current and proposed nanoparticle-based techniques for development of latent fingermarks suffer a number of drawbacks such as complicated, multi-step and time-consuming procedures, batch-to-batch variability, expensive reagents, large background noise and toxicity. Here, we introduce a promising green development technique based on heavy-metal-free quantum dots (QD) for the detection of latent fingermarks on non-porous surfaces. Red-near infrared luminescent Cu-In-S/ZnS core-shell QDs solution was produced in large scales using a water-based, simple and fast method using N-acetyl-cysteine as a biocompatible surfactant to coat the particles. The coated QDs were applied to the successful development of latent fingermarks deposited on a variety of surfaces, including highly patterned polymer banknotes and the sticky side of adhesive tape.<br></p>

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