Cadmium sulfide modified zinc oxide heterojunction harvesting ultrasonic mechanical energy for efficient decomposition of dye wastewater

2022 ◽  
Vol 607 ◽  
pp. 412-422 ◽  
Xiaojing Li ◽  
Junfeng Wang ◽  
Jiayu Zhang ◽  
Chunran Zhao ◽  
Ying Wu ◽  
2021 ◽  
Abdulrahman Mohmmed AlAhzm ◽  
Maan Omar Alejli ◽  
Deepalekshmi Ponnamma ◽  
Yara Elgawady ◽  
Mariam Al Ali Al-Maadeed

Abstract Piezoelectric nanogenerators (PENG) with flexible and simple design have pronounced significance in fabricating sustainable devices for self-powering electronics. This study demonstrates the fabrication of electrospun nanocomposite fibers from polyvinylidene fluoride (PVDF) filled Zinc Oxide (ZnO)/Iron Oxide (FeO) nanomaterials. The nanocomposite fiber based flexible PENG showed piezoelectric output voltage of 5.9 V when 3 wt.% of ZnO/FeO hybrid nanomaterial was introduced, which was 29.5 times higher than the neat PVDF. No apparent decline in output voltage was observed for almost 2000 seconds attributed to the outstanding durability. This higher piezoelectric output performance is correlated with the β-phase transformation studies from the Fourier transformation infrared spectroscopy and the crystallinity studies from the differential scanning calorimetry. Both these studies show respective enhancement of 3.79 and 2.16 % in the β-phase crystallinity values of PVDF-ZnO/FeO 3 wt.% composite. Higher dielectric constant value obtained for the same composite (3 times higher than the neat PVDF) confirms the increased energy storage efficiency as well. Thus the proposed soft and flexible PENG is a promising mechanical energy harvester, and its good dielectric properties reveals the ability to use this material as good power sources for wearable and flexible electronic devices.

2009 ◽  
Vol 95 (21) ◽  
pp. 213506 ◽  
Erik D. Spoerke ◽  
Matthew T. Lloyd ◽  
Erica M. McCready ◽  
Dana C. Olson ◽  
Yun-Ju Lee ◽  

2009 ◽  
Vol 113 (37) ◽  
pp. 16329-16336 ◽  
Erik D. Spoerke ◽  
Matthew T. Lloyd ◽  
Yun-ju Lee ◽  
Timothy N. Lambert ◽  
Bonnie B. McKenzie ◽  

2013 ◽  
Vol 829 ◽  
pp. 222-226
Samira Fathi ◽  
Tahereh Fanaei Sheikholeslami ◽  
Mitra Salami

Piezoelectric nanogenerator (NG) made of nanowires (NWs) is a suitable device for harvesting ambient mechanical energy, applicable for self-powered electronic systems and nanodevices that operate at low power. The coupled piezoelectric and semiconducting characteristics of the zinc oxide (ZnO) NW cause an output voltage generation that made it interesting to use as an energy harvesting device in nanoscale. In this paper, the piezoelectric potential distribution in a bent ZnO NW is investigated, numerically. To do this, a three-dimensional finite element simulation of the device is performed and the results are analyzed and discussed. It is found that the output piezoelectric potential, for a constant nanowire length, is decreased as the diameter of ZnO NW increases. Study on the effect of NW diameters shows the potential will remain constant for nanowire with aspect ratio below 15. Further, the NWs are considered with an inclination of 20 degree relative to the substrate to study by applying force in different directions. The latter indicates an improvement on the output piezoelectric potential. The obtained results show that the ZnO NW can be used as a good energy harvester device by considering a suitable diameter, length and with a justified inclination angle.

1983 ◽  
Vol 87 (26) ◽  
pp. 5456-5460 ◽  
John R. Harbour ◽  
Bonita Dietelbach ◽  
James Duff

2013 ◽  
Vol 464-465 ◽  
pp. 149-155 ◽  
Rajamma Sasikala ◽  
Archana P. Gaikwad ◽  
Vasanthakumaran Sudarsan ◽  
Nidhi Gupta ◽  
Shyamala R. Bharadwaj

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