Abstract
Developing low-cost, efficient processes for recovering and recycling palladium, gold and cobalt metals from urban mine remains a significant challenge in industrialized countries. Here, the development of optical mesosensors/adsorbents (MSAs) for efficient recognition and selective recovery of Pd(II), Au(III), and Co(II) from urban mine was achieved. A simple, general method for preparing MSAs based on using high-order mesoporous monolithic scaffolds was described. Hierarchical cubic /a3d wagon-wheel-shaped MSAs were fabricated by anchoring chelating agents (colorants) into three-dimensional pores and micrometric particle surfaces of the mesoporous monolithic scaffolds. Findings show, for the first time, evidence of controlled optical recognition of Pd(II), Au(III), and Co(II) ions and a highly selective system for recovery of Pd(II) ions (up to -95%) in ores and industrial wastes. Furthermore, the controlled assessment processes described herein involve evaluation of intrinsic properties (e.g., visual signal change, long-term stability, adsorption efficiency, extraordinary sensitivity, selectivity, and reusability); thus, expensive, sophisticated instruments are not required. Results show evidence that MSAs will attract worldwide attention as a promising technological means of recovering and recycling palladium, gold and cobalt metals.
Original language | English |
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Article number | e53044 |
Journal | Journal of Visualized Experiments |
Volume | 2015 |
Issue number | 106 |
DOIs | |
Publication status | Published - 2015 Dec 6 |
Keywords
- Detection
- Engineering
- Gold and cobalt metals
- Issue 106
- Nanoscale scaffolds
- Palladium
- Recovery
- Sensor/adsorbent
- Urban mine
- Wagon-wheel-shaped
ASJC Scopus subject areas
- Biochemistry, Genetics and Molecular Biology(all)
- Chemical Engineering(all)
- Immunology and Microbiology(all)
- Neuroscience(all)