Journal
ACS NANO
Volume 16, Issue 3, Pages 3744-3755Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.1c07614
Keywords
molecular ferroelectrics; piezoelectricity; bacterial cellulose hydrogels; mechanical sensors; biodegradable; recyclable devices
Categories
Funding
- BRICS STI Framework Programme third call 2019
- National Key Research and Development Program of China [2018YFE0123700]
- National Natural Science Foundation of China [51972126, 51972125, 51973076, 21774039]
- Innovation Fund of WNLO
- Fundamental Research Funds for the Central Universities [2019KFYRCPY126, 2018KFYYXJJ052]
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This study proposes an environmentally friendly and recyclable mechanical sensor consisting of bacterial cellulose hydrogel and ImClO(4) molecular ferroelectric. It exhibits high sensitivity and a wide operational range, without generating electronic waste.
Currently, various electronic devices make our life more and more safe, healthy, and comfortable, but at the same time, they produce a large amount of nondegradable and nonrecyclable electronic waste that threatens our environment. In this work, we explore an environmentally friendly and flexible mechanical sensor that is biodegradable and recyclable. The sensor consists of a bacterial cellulose (BC) hydrogel as the matrix and imidazolium perchlorate (ImClO(4)) molecular ferroelectric as the functional element, the hybrid of which possesses a high sensitivity of 4 mV kPa(-1) and a wide operational range from 0.2 to 31.25 kPa, outperforming those of most devices based on conventional functional biomaterials. Moreover, the BC hydrogel can be fully degraded into glucose and oligosaccharides, while ImClO(4) can be recyclable and reused for the same devices, leaving no environmentally hazardous electronic waste.
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