Enhanced corrosion of 2205 duplex stainless steel by Acetobacter aceti through synergistic electron transfer and organic acids acceleration
This study found that electron transfer and organic acids can synergistically promote the corrosion of 2205 duplex stainless steel (DSS). Electrochemical measurement results showed that corrosion of 2205 DSS was more severe in the presence of A. aceti. Surface analysis indicated a thick biofilm formed on the steel surface, with low pH and dissolved oxygen concentrations under the biofilm. Corrosion intensified when A. aceti lacked a carbon source, suggesting that A. aceti can corrode metals by using metallic substrates as electron donors, in addition to its acidic by-products.PMID:38342073 | DOI:10.1016/j.bioelechem.2024.1...
Source: Bioelectrochemistry - February 11, 2024 Category: Biochemistry Authors: Dan Liu Yongmei Liang Huijun Wei Pengjun Liu Daiqiang Jin Lekbach Yassir Baochen Han Jianhui Li Dake Xu Source Type: research
Rapid and label-free A2 peptide epitope decorated CoFe < sub > 2 < /sub > O < sub > 4 < /sub > -C60 nanocomposite-based electrochemical immunosensor for detecting Visceral Leishmaniasis
Bioelectrochemistry. 2024 Feb 7;157:108662. doi: 10.1016/j.bioelechem.2024.108662. Online ahead of print.ABSTRACTDiagnosis of Visceral Leishmaniasis is challenging due to the shared clinical features with malaria, typhoid, and tuberculosis. A CoFe2O4-C60 nanocomposite-based immunosensor decorated with a sensitive A2 peptide antigen was fabricated to detect anti-A2 antibodies for application in visceral leishmaniasis diagnosis. The flame-synthesised nanocomposite was characterised using Fourier Transform Infrared spectroscopy (FTIR), X-ray diffraction spectroscopy (XRD), Scanning electron microscopy (SEM), Energy dispersive...
Source: Bioelectrochemistry - February 11, 2024 Category: Biochemistry Authors: Darko Kwabena Adu Zondi Nate John Alake Blessing Wisdom Ike Mavela Cleopus Mahlalela Sachin Balaso Mohite Sithabile Mokoena Ruchika Chauhan Rajshekhar Karpoormath Source Type: research
Enriching electroactive microorganisms from ferruginous lake waters - Mind the sulfate reducers!
Bioelectrochemistry. 2024 Feb 1;157:108661. doi: 10.1016/j.bioelechem.2024.108661. Online ahead of print.ABSTRACTElectroactive microorganisms are pivotal players in mineral transformation within redox interfaces characterized by pronounced oxygen and dissolved metal gradients. Yet, their systematic cultivation from such environments remains elusive. Here, we conducted an anodic enrichment using anoxic ferruginous waters from a post-mining lake as inoculum. Weak electrogenicity (j = ∼5 µA cm-2) depended on electroactive planktonic cells rather than anodic biofilms, with a preference for formate as electron donor. Additio...
Source: Bioelectrochemistry - February 10, 2024 Category: Biochemistry Authors: Astolfo Valero Daniel A Petrash Anne Kuchenbuch Benjamin Korth Source Type: research
Influence of marine Shewanella putrefaciens and mediated calcium deposition on Q235 carbon steel corrosion
Bioelectrochemistry. 2024 Feb 5;157:108657. doi: 10.1016/j.bioelechem.2024.108657. Online ahead of print.ABSTRACTThe microbiologically influenced corrosion inhibition (MICI) of Q235 carbon steel by Shewanella putrefaciens and mediated calcium deposition were investigated by regulating microbial mineralization. In a calcium-rich medium, S. putrefaciens rapidly created a protective calcium carbonate layer on the steel surface, which blocked Cl- diffusion. Without calcium, the biofilm and rust layer mitigated pitting corrosion but did not prevent Cl- penetration. Potentiodynamic polarization results indicated that the current...
Source: Bioelectrochemistry - February 9, 2024 Category: Biochemistry Authors: Yuntian Lou Weiwei Chang Luyao Huang Xudong Chen Xiangping Hao Hongchang Qian Dawei Zhang Source Type: research
Tuning metal atom doped interface of electrospinning nanowires to toward fast bioelectrocatalysis
Bioelectrochemistry. 2024 Feb 6;157:108664. doi: 10.1016/j.bioelechem.2024.108664. Online ahead of print.ABSTRACTMetal doping plays a key role in overcoming inefficient extracellular electron transfer between electrode interface and electricity-producing microorganisms. However, it is unknown whether different metals play distinctive roles in the doping process. Herein, three different metal ions (Fe, Ni and Cu) are added to the spinning precursor to obtain the corresponding electrospinning metal doped carbon nanofibers. It is found that the maximum output power of iron doped carbon nanofiber anode is 641.96 mW m-2, which ...
Source: Bioelectrochemistry - February 8, 2024 Category: Biochemistry Authors: Wen Lin Shuang Wu Tianyu Tang Yongquan Liao Wenting Miao Zhuanzhuan Shi Xiaoshuai Wu Source Type: research
Inhibitory effect of marine Bacillus sp. and its biomineralization on the corrosion of X65 steel in offshore oilfield produced water
This study explored the impact of marine B. velezensis on the corrosion behavior of X65 steel in simulated offshore oilfield produced water. B. velezensis exhibited rapid growth in the initial stages, and the organic acid metabolites were found to promote corrosion. Subsequently, there was an increase in cross-linked "networked" biofilms products, a significant rise in the prismatic shape of corrosion products, and a tendency for continuous development in the middle and late stages. The organic/inorganic mineralized film layer formed on the surface remained consistently complete. Metabolic products of amino acid corrosion ...
Source: Bioelectrochemistry - February 8, 2024 Category: Biochemistry Authors: Xueyan Shan Jian Wang Min Du Zhiyu Tian Source Type: research
Selective determination of an ovarian cancer biomarker at low concentrations with surface imprinted nanotube based chemosensor
In this study, an electrochemical chemosensor that utilizes a conductive polymer-based molecularly imprinted polymer (MIP) surface for rapid and reliable determination of CA125 was devised. A novel method has been applied to fabricate CA125 imprinted polypyrrole nanotubes (MI-PPy NT) via vapor deposition polymerization (VDP) as a recognition element for highly selective and sensitive determination of CA125. The chemosensor was prepared by immobilizing MI-PPy NT onto screen-printed gold electrodes (Au-SPE) and the performance of the sensor was evaluated by cyclic voltammetry (CV) and electrochemical impedance spectroscopy (...
Source: Bioelectrochemistry - February 4, 2024 Category: Biochemistry Authors: Faruk Can Tugce Akkas Sevinc Yagmur Bekler Selma Takmakli Lokman Uzun Gozde Ozaydin Ince Source Type: research
Polydopamine-immobilized yeast cells for portable electrochemical biosensors applied in environmental copper sensing
Bioelectrochemistry. 2024 Jan 30;157:108658. doi: 10.1016/j.bioelechem.2024.108658. Online ahead of print.ABSTRACTThe coupling of biological organisms with electrodes enables the development of sustainable, low cost, and potentially self-sustained biosensors. A critical aspect is to obtain portable bioelectrodes where the biological material is immobilized on the electrode surface to be utilized on demand. Herein, we developed an approach for the rapid entrapment and immobilization of metabolically active yeast cells in a biocompatible polydopamine layer, which does not require a separate and time-consuming synthesis. The ...
Source: Bioelectrochemistry - February 3, 2024 Category: Biochemistry Authors: Ohiemi Benjamin Ocheja Ehthisham Wahid Jefferson Honorio Franco Massimo Trotta Cataldo Guaragnella Enrico Marsili Nicoletta Guaragnella Matteo Grattieri Source Type: research
Improving the electrochemical characteristics and performance of a neutral all-iron flow battery by using the iron reduction bacteria
Bioelectrochemistry. 2024 Jan 30;157:108660. doi: 10.1016/j.bioelechem.2024.108660. Online ahead of print.ABSTRACTAt present, the all-iron redox flow batteries (RFBs) have greater application potential due to high accessibility of electrolytes compared to traditional RFBs. Meanwhile, although electroactive bacteria can accelerate the electrons transfer, their potential to improve the performance of RFBs has been overlooked. Previously, we had confirmed that ferrous-oxidizing bacteria (FeOB) could enhance the performance of an all-iron RFB, therefore we conducted several batch experiments and chronopotentiometry experiments...
Source: Bioelectrochemistry - February 1, 2024 Category: Biochemistry Authors: Sitao Li Xinyuan Peng Decong Zheng Sen Fan Daping Li Source Type: research
Low efficiency of cathodic protection in marine tidal corrosion of X80 steel in the presence of Pseudomonas sp
In this study, the influence of Pseudomonas sp. on the CP efficiency of Zn sacrificial anodes (ZnSAs) during the tidal corrosion of X80 steel was studied. The results showed that CP efficiency exceeded 92% in an abiotic tidal environment. However, in the biotic tidal environment, Pseudomonas sp. significantly reduced the CP efficiency. Pseudomonas sp. and its biofilm promoted the corrosion of steel under CP, inhibited the formation of a complete calcareous deposit layer, which weakened the CP efficiency of ZnSA in the marine tidal environment.PMID:38290303 | DOI:10.1016/j.bioelechem.2024.108656 (Source: Bioelectrochemistry)
Source: Bioelectrochemistry - January 30, 2024 Category: Biochemistry Authors: Xiaobao Zhou Qin Wang Hui Su Zhuowei Tan Cong Li Zhi Li Tangqing Wu Source Type: research
Effect of yeast extract on microbiologically influenced corrosion of X70 pipeline steel by Desulfovibrio bizertensis SY-1
Bioelectrochemistry. 2024 Jan 23;157:108650. doi: 10.1016/j.bioelechem.2024.108650. Online ahead of print.ABSTRACTMicrobiologically influenced corrosion (MIC) is a complicated process that happens ubiquitously and quietly in many fields. As a useful nutritional ingredient in microbial culture media, yeast extract (YE) is a routinely added in the MIC field. However, how the YE participated in MIC is not fully clarified. In the present work, the effect of YE on the growth of sulfate reducing prokaryotes (SRP) Desulfovibrio bizertensis SY-1 and corrosion behavior of X70 pipeline steel were studied. It was found that the weigh...
Source: Bioelectrochemistry - January 29, 2024 Category: Biochemistry Authors: Fang Guan Yingying Pei Jizhou Duan Wolfgang Sand Ruiyong Zhang Xiaofan Zhai Yimeng Zhang Baorong Hou Source Type: research
Sensitive and selective electrochemical aptasensing method for the voltammetric determination of dopamine based on AuNPs/PEDOT-ERGO nanocomposites
In this study, the effects of phosphate buffered saline (PBS) and graphene oxide (GO) as supporting electrolytes and dopants on the electropolymerization process of 3,4-ethylenedioxythiophene (EDOT) on glassy carbon electrode (GCE) were investigated. It was found that the PEDOT-ERGO nanocomposites obtained by a simple one-step electrochemical redox polymerization method using GO as the only supporting electrolyte and dopant possess excellent electrochemical properties. Then, the PEDOT-ERGO nanocomposites were used as electrode substrate to further modify with AuNPs, and an electrochemical aptasensor based on AuNPs/PEDOT-ER...
Source: Bioelectrochemistry - January 28, 2024 Category: Biochemistry Authors: Jiatao Chen Dandan Li Xiuting Ding Dongdong Zhang Source Type: research
Harnessing active biofilm for microbial corrosion protection of carbon steel against Geobacter sulfurreducens
This study investigated the inhibition of Vibrio sp. EF187016 biofilm on Geobacter sulfurreducens on carbon steel. Vibrio sp. EF187016 biofilm reduced the corrosion current density and impeded pitting corrosion. A thick and uniform Vibrio sp. EF187016 biofilm formed on the coupon surfaces, acting as a protective layer against corrosive ions and electron acquisition by G. sulfurreducens. The pre-grown mature Vibrio sp. EF187016 biofilms, provided enhanced protection against G. sulfurreducens corrosion. Additionally, the extracellular polymeric substances from Vibrio sp. EF187016 was confirmed to act as a green corrosion inh...
Source: Bioelectrochemistry - January 28, 2024 Category: Biochemistry Authors: Yuting Jin Di Wang Danni Zhang Yu Gao Dake Xu Fuhui Wang Source Type: research
The combination of DNA nanostructures and materials for highly sensitive electrochemical detection
Bioelectrochemistry. 2024 Jan 24;157:108651. doi: 10.1016/j.bioelechem.2024.108651. Online ahead of print.ABSTRACTDue to the wide range of electrochemical devices available, DNA nanostructures and material-based technologies have been greatly broadened. They have been actively used to create a variety of beautiful nanostructures owing to their unmatched programmability. Currently, a variety of electrochemical devices have been used for rapid sensing of biomolecules and other diagnostic applications. Here, we provide a brief overview of recent advances in DNA-based biomolecular assays. Biosensing platform such as electroche...
Source: Bioelectrochemistry - January 28, 2024 Category: Biochemistry Authors: Rong Tian Wenhao Ma Lue Wang Wanyi Xie Yunjiao Wang Yajie Yin Ting Weng Shixuan He Shaoxi Fang Liyuan Liang Liang Wang Deqiang Wang Jingwei Bai Source Type: research
An electrochemical biosensor based on DNA tetrahedron nanoprobe for sensitive and selective detection of doxorubicin
Bioelectrochemistry. 2024 Jan 23;157:108652. doi: 10.1016/j.bioelechem.2024.108652. Online ahead of print.ABSTRACTDoxorubicin (DOX) is a clinical chemotherapeutic drug and patients usually suffer from dose-dependent cytotoxic and side effects during chemotherapy process with DOX. Therefore, developing a reliable strategy for DOX analysis in biological samples for dosage guidance during chemotherapy process is of great significance. Herein, a sensitive and selective electrochemical biosensor for DOX detection was designed based on gold nanoparticles (AuNPs) and DNA tetrahedron (TDN) nanoprobe bifunctional glassy carbon elec...
Source: Bioelectrochemistry - January 25, 2024 Category: Biochemistry Authors: Yunzhi Zhao Ying Hao Min Cui Na Li Bao Sun Yu Wang Haiyan Zhao Cong Zhang Source Type: research
