Optofluidics based micro-photocatalytic fuel cell for efficient wastewater treatment and electricity generation

Lab on a Chip ◽  
2014 ◽  
Vol 14 (17) ◽  
pp. 3368 ◽  
Author(s):  
Lin Li ◽  
Guanyi Wang ◽  
Rong Chen ◽  
Xun Zhu ◽  
Hong Wang ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cell ◽  
Electricity Generation ◽  
Photocatalytic Fuel Cell

Enhancement of simultaneous batik wastewater treatment and electricity generation in photocatalytic fuel cell

2018 ◽  
Vol 25 (35) ◽  
pp. 35164-35175 ◽  
Author(s):  
Wan Fadhilah Khalik ◽  
Li-Ngee Ho ◽  
Soon-An Ong ◽  
Chun-Hong Voon ◽  
Yee-Shian Wong ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cell ◽  
Electricity Generation ◽  
Photocatalytic Fuel Cell

scholarly journals Feasibility study of municipal wastewater removal synchronized with electricity generation via solar-driven photocatalytic fuel cell with Bi2WO6/ZnO nanorods array photoanode

2021 ◽  
Vol 945 (1) ◽  
pp. 012004
Author(s):  
Zi-Jun Yong ◽  
Sze-Mun Lam ◽  
Jin-Chung Sin ◽  
Abdul RahmanMohamed
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cell ◽  
Electricity Generation ◽  
Municipal Wastewater ◽  
Zno Nanorods ◽  
Municipal Wastewater Treatment ◽  
Sunlight Irradiation ◽  
X Ray ◽  
Photocatalytic Fuel Cell ◽  
Zno Nras

Abstract The reclamation of energy from municipal wastewater treatment process is highly demanded and could resolve the two most formidable dilemmas of water pollution and energy crisis nowadays. In this study, a photocatalytic fuel cell (PFC) utilizing a Z-scheme heterojunction Bi2WO6/ZnO nanorod arrays (NRAs) photoanode was employed for efficient municipal wastewater treatment and electricity generation simultaneously under sunlight irradiation. Various characterization techniques, including energy dispersive X-ray (EDX), field-emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), electrochemical impedance spectroscopy (EIS), transient photoresponse (TPR), and linear sweep voltammetry (LSV) were used to analyze the physical, chemical and photoelectrochemical characteristics of the as-synthesized photoanode. The results indicated that the Z-scheme heterojunction Bi2WO6/ZnO NRAs exhibited the excellent photocatalytic performance under sunlight irradiation as compared to pristine ZnO NRAs. Ergo, the PFC system achieved complete removal of COD and produced 3.30 μW cm−2, 37.10 μA cm−2 and 563 mV of maximum power density (Pmax ), short-current density (Jsc) and open-circuit voltage (Voc) within 4 h of sunlight irradiation, respectively. The boosted photoactivity was ascribed to the successful formation of the Z-scheme hybridization interface betwixt the Bi2WO6 and ZnO NRAs, that not only enhanced the visible light adsorption of ZnO NRAs, concomitantly significantly accelerated the spatial charge separation and restrained the electron-hole pair recombination.

Performance Enhancement of Actual Wastewater Treatment and Electricity Generation Through Surface Modified TiO2 Nanotube Arrays Based Photoanode Photocatalytic Fuel Cell

2021 ◽  
Vol 21 (10) ◽  
pp. 5188-5195
Author(s):  
Xicheng Li ◽  
Fengnan Yang ◽  
Tao Guo ◽  
Yang Zhang ◽  
Shaobin Yu ◽  
...  
Keyword(s):  
Wastewater Treatment ◽  
Fuel Cell ◽  
Ethylene Glycol ◽  
Electricity Generation ◽  
Noble Metals ◽  
Short Circuit ◽  
Actual Wastewater ◽  
Photocatalytic Fuel Cell ◽  
Surface Modified ◽  
Glycol Solution

Herein, we report a surface modified TiO2 nanowire arrays (NAs) photoanode based photocatalytic fuel cell (PFC) towards simultaneous enhancement of actual wastewater treatment and electricity generation under visible light irradiation. TiO2 NAs were facile fabricated via two-step anodization process in ethylene glycol and glycerin solution, respectively. Actual wastewater samples were directly applied to evaluate the PFC performance in terms of wastewater degradation and electricity generation through the as-prepared TiO2 NAs photoanode without loading noble-metals or semiconductors. TiO2 NAs photoanode prepared from ethylene glycol solution demonstrated a highly ordered surface network, exhibiting short-circuit current density and fill factor nearly 4.3 times and 1.4 times higher than pristine TiO2 NAs photoanode prepared according to previous reports. The experimental results revealed that the fabrication of TiO2 NAs by a facile surface modification in ethylene glycol solution can be considered a low-cost and scalable routine for enhancing performance of PFC photoanode towards efficient actual wastewater treatment and electricity generation.

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