N-type Cu 2 O doped activated carbon as catalyst for improving power generation of air cathode microbial fuel cells

Zhang, Xi; Li, Kexun; Yan, Pengyu; Liu, Ziqi; Pu, Liangtao

doi:10.1016/j.biortech.2015.03.131

Cited by 102 publications

(27 citation statements)

References 35 publications

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“…Some researchers used the hybrid binuclear-cobalt-phthalocyanine as catalyst in single chamber microbial fuel cells with the maximum power density of 368 mW m À2 (Li et al, 2014a,b). The air cathode with as-prepared Co 3 O 4 doped AC had better performance than others in reported researches, such as the copper (Zhang et al, 2015), silver doped carbon air cathode. The cost of producing electrodes was greatly reduced compared Pt electrodes, so Co 3 O 4 doped AC could be an effective and low-cost cathodic catalyst alternative to Pt for ORR.…”

Section: Ac-n2mentioning

confidence: 82%

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The addition of ortho-hexagon nano spinel Co 3 O 4 to improve the performance of activated carbon air cathode microbial fuel cell

et al. 2015

Bioresource Technology

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Section: Ac-n2mentioning

confidence: 82%

“…One effective way was to use heteroatom such as nitrogen or phosphorus doped AC with thermal or chemical pretreatment Zhang et al, 2014a). The other was non-precious metal modified AC such as silver , Cu 2 O (Zhang et al, 2015), carnation MnO 2 (Zhang et al, 2014a,b).…”

Section: Introductionmentioning

confidence: 98%

The addition of ortho-hexagon nano spinel Co 3 O 4 to improve the performance of activated carbon air cathode microbial fuel cell

et al. 2015

Bioresource Technology

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“…Following the same procedure Cu 2 O was added into AC surface which increased mesopore, surface area, charge transfer resistance and total resistance decreased significantly and faster electro-transfer kinetics. High conductivity of Cu and increased active sites contributed to high ORR catalytic behavior of AC which led to the utmost MFCs' power density using this original air cathode to 1390 ± 76 mWm -2 , about 59% greater than the bare AC air cathode [41].…”

Section: Transition Metal/oxides Dopingmentioning

confidence: 99%

“…For instance, a MFC well fitted with an AC cathode bonded with a polytetrafluoroethylene (PTFE) and the current collected by nickel brought about 1220 mWm −2 greater to 1060 mWm −2 achieved using a Pt catalyst cathode (0.5 mg-Pt cm −2 ) and a Nafion binder [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48] ) AC powder [50].…”

Section: Introductionmentioning

confidence: 99%

Enhancing Catalyst Efficiency of Activated Carbon for Oxygen Reduction Reaction in Air Cathode Microbial Fuel Cell Application

Muhoza¹,

Ma²,

Kalakodio³

et al. 2017

Int J Waste Resour

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IntroductionMicrobial fuel cell (MFC) is a potential environmental friendly bioelectrochemical system as it combines treatment of organic wastes and electric energy generation [1][2][3][4]. In MFCs, the electrochemically active microorganisms' biofilm colonizes the anodic surface thus oxidizing organic pollutants producing electrons and protons. Electrons are transferred through an external circuit to the cathode where are received by the terminal electron acceptor while protons migrate through the membrane or solution to the cathode to keep electrical neutrality which creates potential difference [1,5]. Several applications of this technology such as hydrogen gas production [6], hydrogen peroxide generation [7], desalination [8][9][10], remote sensors and monitoring devices [11,12] metal recovery at cathode [13] and robots [12,14] to mention but few, have been studied and left researchers with more innovation ideas in the field. Having electrochemical processes catalyzed by biological processes in addition to some other design parameters such as engineering of microbial biofilm structure, decrypting electron transfer mechanisms, cell/reactor configuration, electrode materials and geometries, substrate concentration, retention time, and optimizing cathode catalysts [15,16] makes this system more sensitive to internal losses and gives it a certain level of complexity [17,18]. This and other challenges that are still unanswered are the bottlenecks for MFC application in real environment [15,19]. Therefore, current researches focus on limiting factors and ways to curb their effects thus increasing the performance [2,20,21]. Among others, is trying different MFC design configurations where MFC aircathode proved to more advantageous over double chamber for scaling up because of its simple structure, low cost and direct use oxygen in air, which could removes aeration from conventional wastewater treatment process [5,22]. Due to its high reduction potential and inexhaustible source, Oxygen is the most fairly used terminal electron acceptor and is considered to be competent for MFC air-cathode application and scale up as it plays a critical role in both organic oxidation and energy recovery at the cathode [23]. AbstractMicrobial fuel cell (MFC) air cathode present a great potential among other configurations due to its simple design, low cost and direct use oxygen from air as terminal electron acceptor which could help to save tremendous energy used for aeration in conventional wastewater treatment. However, at the cathode oxygen reduction reaction which is vital to generate high power density is naturally slow, therefore a catalyst is needed to overcome its reaction over-potential. Platinum (Pt) is the standard used catalyst in large number of oxidation reduction reactions whether in basic or acidic electrolytes. But, due to its high cost and limited resources it doesn't make it a sustainable candidate for scaling up of this juvenile technology. Activated carbon was found to be a low cost and environmental friendly Ox...

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“…However, many of these efficient ORR catalysts are just suitable for alkaline media, hardly for neutral ones. Fortunately, it is found that Mn x O y and Cu 2 O are considered as promising cathode catalysts in microbial fuel cell using neutral electrolyte. Therefore, we expect that a novel catalyst might be achieved by introducing Mn x O y and Cu 2 O into other metal oxides or metal compounds to achieve good applicability in both neutral and basic conditions.…”

Section: Introductionmentioning

confidence: 99%

Multiple Metal (Cu, Mn, Fe) Centered Species Simultaneously Combined Nitrogen‐doped Graphene as an Electrocatalyst for Oxygen Reduction in Alkaline and Neutral Solutions

et al. 2018

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A new efficient composite catalyst (CuIMnFeIIIO/NG) for oxygen reduction reaction (ORR) in both alkaline and neutral media, is successfully prepared via a facile, clean, low‐cost and reproducible solvothermal method without any further treatments. The nanoparticles consisting of crystalline phases of Fe2O3, MnCO3 and amorphous Cu2O&MnxOy (CuIMnO), are anchored on nitrogen‐doping graphene (N/C atomic ratio up to 10.56 %), which offer various active sites toward ORR. The synergistic catalytic effect between these components affords excellent ORR performance with comparable onset potential and current density to commercial Pt/C in both pH‐situations, and a 4‐electron‐transfer path during oxygen reduction. Furthermore, comparative experiment results are discussed to describe the different degrees of ORR contribution in different medium from metal species and nitrogen doping. Meanwhile, superior methanol tolerance and high stability of CuIMnFeIIIO/NG can make it a promising alternative for expensive commercial Pt‐based electrocatalysts in corresponding alkaline and neutral fuel cells.

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N-type Cu 2 O doped activated carbon as catalyst for improving power generation of air cathode microbial fuel cells

Cited by 102 publications

References 35 publications

The addition of ortho-hexagon nano spinel Co 3 O 4 to improve the performance of activated carbon air cathode microbial fuel cell

The addition of ortho-hexagon nano spinel Co 3 O 4 to improve the performance of activated carbon air cathode microbial fuel cell

Enhancing Catalyst Efficiency of Activated Carbon for Oxygen Reduction Reaction in Air Cathode Microbial Fuel Cell Application

Multiple Metal (Cu, Mn, Fe) Centered Species Simultaneously Combined Nitrogen‐doped Graphene as an Electrocatalyst for Oxygen Reduction in Alkaline and Neutral Solutions

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