Turning waste into wealth: remotely NIR light‐controlled precious metal recovery by covalently functionalized black phosphorus

ChemSusChem ◽  
2021 ◽  
Author(s):  
Siyu Zhang ◽  
Qing Zhao ◽  
Dongsheng Wang ◽  
Shuo Deng ◽  
Dengyu Li ◽  
...  
Keyword(s):  
Precious Metal ◽  
Metal Recovery ◽  
Black Phosphorus ◽  
Nir Light

scholarly journals Novel concept of the smart NIR-light–controlled drug release of black phosphorus nanostructure for cancer therapy

2018 ◽  
Vol 115 (3) ◽  
pp. 501-506 ◽  
Author(s):  
Meng Qiu ◽  
Dou Wang ◽  
Weiyuan Liang ◽  
Liping Liu ◽  
Yin Zhang ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Cancer Therapy ◽  
Drug Release ◽  
Drug Delivery System ◽  
Delivery System ◽  
Near Infrared ◽  
Black Phosphorus ◽  
Deep Penetration ◽  
Nir Light

A biodegradable drug delivery system (DDS) is one the most promising therapeutic strategies for cancer therapy. Here, we propose a unique concept of light activation of black phosphorus (BP) at hydrogel nanostructures for cancer therapy. A photosensitizer converts light into heat that softens and melts drug-loaded hydrogel-based nanostructures. Drug release rates can be accurately controlled by light intensity, exposure duration, BP concentration, and hydrogel composition. Owing to sufficiently deep penetration of near-infrared (NIR) light through tissues, our BP-based system shows high therapeutic efficacy for treatment of s.c. cancers. Importantly, our drug delivery system is completely harmless and degradable in vivo. Together, our work proposes a unique concept for precision cancer therapy by external light excitation to release cancer drugs. If these findings are successfully translated into the clinic, millions of patients with cancer will benefit from our work.

Visible- and NIR-Light Responsive Black-Phosphorus-Based Nanostructures in Solar Fuel Production and Environmental Remediation

2018 ◽  
Vol 30 (49) ◽  
pp. 1804770 ◽  
Author(s):  
Rongjuan Feng ◽  
Wanying Lei ◽  
Gang Liu ◽  
Minghua Liu
Keyword(s):  
Environmental Remediation ◽  
Black Phosphorus ◽  
Solar Fuel ◽  
Fuel Production ◽  
Nir Light

Bio-derived materials as a green route for precious & critical metal recovery and re-use

2015 ◽  
Vol 17 (4) ◽  
pp. 1951-1965 ◽  
Author(s):  
Jennifer R. Dodson ◽  
Helen L. Parker ◽  
Andrea Muñoz García ◽  
Alexandra Hicken ◽  
Kaana Asemave ◽  
...  
Keyword(s):  
Precious Metal ◽  
Real Life ◽  
Metal Recovery ◽  
Green Route ◽  
Critical Metal

Overview of research in critical and precious metal recovery using biosorption, application to real-life wastes and uses of the metal-loaded materials.

A Potential Alternative for Precious Metal Recovery from E-waste: Iodine Leaching

2015 ◽  
pp. 150629132750004 ◽  
Author(s):  
Merve Sahin ◽  
Ata Akcil ◽  
Ceren Erust ◽  
Shinar Altynbek ◽  
Chandra Sekhar Gahan ◽  
...  
Keyword(s):  
Precious Metal ◽  
Metal Recovery ◽  
Potential Alternative

scholarly journals Optimization of Precious Metal Recovery from Waste Electrical and Electronic Equipment Boards

2011 ◽  
Vol 02 (06) ◽  
pp. 675-682 ◽  
Author(s):  
Massimo Delfini ◽  
Mauro Ferrini ◽  
Andrea Manni ◽  
Paolo Massacci ◽  
Luigi Piga ◽  
...  
Keyword(s):  
Precious Metal ◽  
Metal Recovery ◽  
Electronic Equipment

scholarly journals Selective Recovery of Copper from a Synthetic Metalliferous Waste Stream Using the Thiourea-Functionalized Ion Exchange Resin Puromet MTS9140

Eng ◽  
2021 ◽  
Vol 2 (4) ◽  
pp. 512-530
Author(s):  
Alex L. Riley ◽  
Christopher P. Porter ◽  
Mark D. Ogden
Keyword(s):  
Precious Metal ◽  
High Selectivity ◽  
Exchange Resin ◽  
Fixed Bed ◽  
Ion Exchange Resin ◽  
Metal Recovery ◽  
Solution Chemistry ◽  
Batch Mode ◽  
Acidic Solutions ◽  
By Products

The extraction of Cu from mixed-metal acidic solutions by the thiourea-functionalized resin Puromet MTS9140 was studied. Despite being originally manufactured for precious metal recovery, a high selectivity towards Cu was observed over other first-row transition metals (>90% removal), highlighting a potential for this resin in base metal recovery circuits. Resin behaviour was characterised in batch-mode under a range of pH and sulphate concentrations and as a function of flow rate in a fixed-bed setup. In each instance, a high selectivity and capacity (max. 32.04 mg/g) towards Cu was observed and was unaffected by changes in solution chemistry. The mechanism of extraction was determined by XPS to be through reduction of Cu(II) to Cu(I) rather than chelation. Elution of Cu was achieved by the use of 0.5 M–1 M NaClO3. Despite effective Cu elution (82%), degradation of resin functionality was observed, and further detailed through the application of IC analysis to identify degradation by-products. This work is the first detailed study of a thiourea-functionalized resin being used to selectively target Cu from a complex multi-metal solution.

Sign in / Sign up

Export Citation Format

Share Document