期刊
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
卷 7, 期 9, 页码 8834-8841出版社
AMER CHEMICAL SOC
DOI: 10.1021/acssuschemeng.9b00790
关键词
Biodegradable; Protein photoelectrochemical cell; Flexible electrodes; Indium recycling; Graphene/ethyl-cellulose composite
资金
- MOE AcRF 1 [R-284-000-161-114, R-284-000-174-114]
- Biotechnology and Biological Sciences Research Council of the UK [BB/1022570/1]
- BrisSynBio Synthetic Biology Research Centre [BB/L01386X/1]
- BBSRC [BB/I022570/1, BB/L01386X/1] Funding Source: UKRI
The development of new technologies that use sunlight as an energy source is adding to pressure on finite natural resources and the challenges of recycling and disposal. Looking to nature for material assistance, we describe a proof-of-concept flexible and biodegradable photoelectrochemical cell based almost entirely on pigments, proteins, polysaccharides, and graphene platelets. In addition to being largely environmentally benign, such devices present opportunities for the recovery of valuable components such as, in the present case, the geologically scarce metal indium and the precious metal gold. Recovery is achieved through dissolution in ethanol followed by physical separation of the heavy element, leaving a residue made up from common elements that can be recycled through natural biodegradation. Potential applications for flexible, biomolecule-based photoelectrochemical cells are considered.
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