Zinc Oxide Nonmaterial Based Dye-Sensitized Solar Cells Using Natural Dyes Extracted from Different Plant Pigment
Issue:
Volume 8, Issue 2, April 2022
Pages:
18-24
Received:
15 March 2022
Accepted:
19 April 2022
Published:
28 April 2022
DOI:
10.11648/j.ajme.20220802.11
Downloads:
Views:
Abstract: Dye-sensitized solar cells (DSSCs) are a low-cost alternative to thin-film and silicon-based solar cells. Platinum is an effective catalytic material for creating DSSC counter electrodes (CEs), but it is also pricey. In this work, PEDOT was used as a counter electrode and ZnO was used as a photoanode. Natural dyes such as Fragaria x ananass, Amaranthus Iresine Herbstii, Bougainvillea spectacles and flowers, and Beta vulgaris (beetroot) were extracted with four solvents to fabricate dye-sensitized solar cells (DSSCs). The zinc oxide (ZnO) nanoparticles were successfully synthesized by simple sol-gel techniques. X-ray diffraction (XRD) confirms that the synthesized materials were in the hexagonal crystal structure. The crystallite sizes of the ZnO NPs were found to be 29 nm. The optical properties of ZnO and extracted natural dyes were studied using UV-visible spectroscopy. The conversion efficiency of DSSC extracted from distilled water using Beta vulgaris sensitizers was found to be 0.0328%, which is good compared to the other natural dyes. For all sensitizers, the effects of several parameters were analyzed, such as incident photon switching efficiency (IPCE), short-circuit density (Jsc), fill factor, and open-circuit voltage (Voc).
Abstract: Dye-sensitized solar cells (DSSCs) are a low-cost alternative to thin-film and silicon-based solar cells. Platinum is an effective catalytic material for creating DSSC counter electrodes (CEs), but it is also pricey. In this work, PEDOT was used as a counter electrode and ZnO was used as a photoanode. Natural dyes such as Fragaria x ananass, Amaran...
Show More
Biomass Renewable Energy Production from Corn Cobs Feedstock Gasifier as Energy Constituent in Internal Combustion Engines (ICEs)
Ugochukwu Okwudili Matthew,
Jazuli Sanusi Kazaure,
John Ohabuiro,
Musefiu Aderinola,
Nura Abdullahi Haladu,
Ubochi Chibueze Nwamouh
Issue:
Volume 8, Issue 2, April 2022
Pages:
25-35
Received:
21 January 2022
Accepted:
10 February 2022
Published:
31 May 2022
DOI:
10.11648/j.ajme.20220802.12
Downloads:
Views:
Abstract: Biomass gasification is a chemical conversion of solid biomass renewable energy constituents into a gaseous combustible substance often regarded as producer gas through progressive thermochemical synthesis. The gasification method produces gas fuels required for power generation which is considered the best alternative to fossil fuels that accounted for 80% of domestic energy and industrial consumption with consequential impressions on global warming and greenhouse effects. In the current research, the biomass gasification system were used to produce electricity from the chemical energy contained in organic recyclable agricultural waste (Corn Cob) used as feedstock gasifier in the energy conversion process. Corn Cob feedstocks renewable organic materials produced from plants were used to synthesize the syngas that contained the electrical energy required to power the internal combustion engine. The utilization of pure hydrous or anhydrous ethanol in internal combustion engines is the direct lignocellulose bioconversion of Corn Cob requiring microbial fermentation, thermochemical pre-treatment test, designed to accelerate enzymatic hydrolysis of cellulose into fermentable sugars, varying the temperature conditions to produce maximum production of biofuel on an industrial scale to drive the internal combustion engine. The current research utilized biomass energy to generate 150 KW worth of electricity from biomass gasification process, utilizing Corn Cob feedstock gasifier to generate electric power for rural electrification.
Abstract: Biomass gasification is a chemical conversion of solid biomass renewable energy constituents into a gaseous combustible substance often regarded as producer gas through progressive thermochemical synthesis. The gasification method produces gas fuels required for power generation which is considered the best alternative to fossil fuels that accounte...
Show More
