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Photoreduction adjusted surface oxygen vacancy of BiMoO for boosting photocatalytic redox performance

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1937-1948 doi: 10.1007/s11705-023-2353-5

Abstract: In this study, Bi2MoO6 with adjustable rich oxygen vacancies was prepared by a novel and simple solvothermal-photoreduction method which might be suitable for a large-scale production. The experiment results show that Bi2MoO6 with rich oxygen vacancies is an excellent photocatalyst. The photocatalytic ability of BMO-10 is 0.3 and 3.5 times higher than that of the pristine Bi2MoO6 for Rhodamine B degradation and Cr(VI) reduction, respectively. The results display that the band energy of the samples with oxygen vacancies was narrowed and the light absorption was broadened. Meanwhile, the efficiency of photogenerated electron-holes was increased and the separation and transfer speed of photogenerated carriers were improved. Therefore, this work provides a convenient and efficient method to prepare potential adjustable oxygen vacancy based photocatalysts to eliminate the pollution of dyes and Cr(VI) in water.

Keywords： Bi2MoO6     oxygen vacancies     photoreduction     Cr(VI)     RhB    

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High butanol production by regulating carbon, redox and energy in Clostridia? ?

Jianfa Ou,Chao Ma,Ningning Xu,Yinming Du,Xiaoguang (Margaret) Liu

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 3,   Pages 317-323 doi: 10.1007/s11705-015-1522-6

Abstract: rebalance metabolic flux to achieve a high butanol production by regulating the metabolism of carbon, redox

Keywords： Clostridia     butanol     biofuel     metabolism     carbon     redox     energy    

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Characterization and comparison of organic functional groups effects on electrolyte performance for vanadium redox

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 9,   Pages 1221-1230 doi: 10.1007/s11705-023-2298-8

Abstract: The vanadium redox flow battery with a safe and capacity-controllable large-scale energy storage systemlimitations, as well as to investigate the effects of various organic functional groups on the vanadium redox

Keywords： vanadium redox flow battery     functional groups     organic additives     energy density     stability    

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Probing the redox process of

Rui Lu, Wei Chen, Wen-Wei Li, Guo-Ping Sheng, Lian-Jun Wang, Han-Qing Yu

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 1, doi: 10.1007/s11783-017-0905-y

Abstract: Fluorescece spectroelectrochemistry is used to probe redox process of benzoquinone.CVF and DCVF can reveal more information about benzoquinone redox reactions.are common organic compounds frequently used as model dissolved organic matters in water, and their redox

Keywords： p-Benzoquinone     Electrochemistry     Fluorescence     Spectroelectrochemistry     Derivative cyclic volta fluorescence    

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Nitrifying population dynamics in a redox stratified membrane biofilm reactor (RSMBR) for treating ammonium-rich

Rongchang WANG, Xinmin ZHAN, Yalei ZHANG, Jianfu ZHAO

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 1,   Pages 48-56 doi: 10.1007/s11783-011-0305-7

Abstract: Nitrogen removal performance and nitrifying population dynamics were investigated in a redox stratified

Keywords： ammonium-rich wastewater     membrane biofilm reactor     nitrification     redox stratification     shortcut nitrogen    

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Persistent free radicals in humin under redox conditions and their impact in transforming polycyclic

Hanzhong Jia, Yafang Shi, Xiaofeng Nie, Song Zhao, Tiecheng Wang, Virender K. Sharma

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 4, doi: 10.1007/s11783-020-1252-y

Abstract: Abstract • Regulation of redox conditions promotes the generation of free radicals on HM. • HM-PFRssubstance-associated persistent free radicals (PFRs) in the fate of organic contaminants under various redoxrelatively stable radical existed in the original sample, and the other type, which was generated by redox

Keywords： Humic substance     Polycyclic aromatic hydrocarbons (PAHs)     Persistent free radicals (PFRs)     Redox     Reactive    

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Pressure drop analysis on the positive half-cell of a cerium redox flow battery using computational fluid

Fernando F. Rivera, Berenice Miranda-Alcántara, Germán Orozco, Carlos Ponce de León, Luis F. Arenas

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 2,   Pages 399-409 doi: 10.1007/s11705-020-1934-9

Abstract: dynamics in the electrode compartments by mathematical models can be a powerful tool in the development of redox

Keywords： CFD simulation     porous media     porous electrode     pressure drop     redox flow battery    

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Redox flow batteries—Concepts and chemistries for cost-effective energy storage

Matthäa Verena HOLLAND-CUNZ, Faye CORDING, Jochen FRIEDL, Ulrich STIMMING

Frontiers in Energy 2018, Volume 12, Issue 2,   Pages 198-224 doi: 10.1007/s11708-018-0552-4

Abstract: Redox flow batteries (RFBs) are such an energy storage system, which has favorable features over otherHowever, because of their low energy-density, low power-density, and the cost of components such as redoxThis goal can be achieved by increasing the concentration of redox species, employing redox species thatThird, to reduce the costs of single or multiple components such as redox species or membranes.The aim is to elucidate which redox-system is most favorable in terms of energy-density, power-density

Keywords： electrochemical energy storage     redox flow battery     vanadium    

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Iron oxidation-reduction and its impacts on cadmium bioavailability in paddy soils: a review

Chunhua ZHANG, Ying GE, Huan YAO, Xiao CHEN, Minkun HU

Frontiers of Environmental Science & Engineering 2012, Volume 6, Issue 4,   Pages 509-517 doi: 10.1007/s11783-012-0394-y

Abstract: Redox conditions in paddy soils may vary as they are submerged and drained during rice growth.Therefore, in this paper, advances in the study of paddy Fe redox transformations and their effects onFe in paddy soils, the reactions involved in Fe oxidation-reduction, chemical factors affecting Fe redox

Keywords： paddy soil     redox     iron     cadmium     bioavailability     rice    

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Redox reactions of iron and manganese oxides in complex systems

Jianzhi Huang, Huichun Zhang

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1255-8

Abstract: • Mechanisms of redox reactions of Fe- and Mn-oxides were discussed. • Oxidative reactions of Mn- andreaction of Fe(II)/iron oxides in complex systems was examined. • Future research on examining the redoxConspectus Redox reactions of Fe- and Mn-oxides play important roles in the fate and transformationligands and natural organic matter (NOM), and second metal oxides such as Al, Si and Ti oxides on the redox

Keywords： Iron oxides     manganese oxides     reduction     oxidation     complex systems     reaction kinetics and mechanisms    

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β-Nickel hydroxide cathode material for nano-suspension redox flow batteries

Yue LI, Cheng HE, Elena V. TIMOFEEVA, Yujia DING, Javier PARRONDO, Carlo SEGRE, Vijay RAMANI

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 401-409 doi: 10.1007/s11708-017-0496-0

Abstract: As part of an effort to build a prototype flow battery system using a nano-suspension containing β-Ni(OH) nanoparticles as the cathode material, nano-sized β-Ni(OH) particles with well-controlled particle size and morphology were synthesized via the one-step precipitation of a NiCl precursor. The composition and morphology of the nanoparticles were characterized by scanning electronic microscopy (SEM) and X-ray diffraction (XRD). The XRD patterns confirmed that β-Ni(OH) was successfully synthesized, while SEM results showed that the particle sizes range from 70 to 150 nm. To ensure that Ni(OH) could be employed in the nano-suspension flow battery, the electrochemical performance of the synthesized β-Ni(OH) was initially tested in pouch cells through charge/discharge cycling. The phase transformations occurring during charge/discharge were investigated using X-ray absorption spectroscopy to obtain the shift in the oxidation state of Ni (X-ray adsorption near edge structure, XANES) and the distances between Ni and surrounding atoms in charged and discharged states (extended X-ray absorption fine structure, EXAFS). XANES results indicated that the electrode in the discharged state was a mixture of phases because the edge position did not shift back completely. XAFS results further proved that the discharge capacity was provided by β-NiOOH and the ratio between β-Ni(OH) and g-NiOOH in the electrode in the discharged state was 71:29. Preliminary nano-suspension tests in a lab-scale cell were conducted to understand the behavior of the nano-suspension during charge/discharge cycling and to optimize the operating conditions.

Keywords： nano-suspension flow battery     β-Ni(OH)2     scanning electronic microscopy (SEM)     X-ray diffraction (XRD)     X-ray adsorption near edge structure (XANES)     extended X-ray absorption fine structure (EXAFS)    

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Preparation of ceria-zirconia solid solution with enhanced oxygen storage capacity and redox performance

Lijing MENG, Licheng LIU, Xuehong ZI, Hongxing DAI, Hong HE, Zhen ZHAO, Xinping WANG,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 2,   Pages 164-171 doi: 10.1007/s11783-010-0019-2

Abstract: A new method called ultrasonic-assisted membrane reaction (UAMR) was reported for the fabrication of ceria-zirconia solid solution. A series of ceria-zirconia solid solutions with different Ce/Zr molar ratios were prepared by the UAMR method and characterized by X-ray diffraction (XRD), N adsorption, hydrogen temperature-programmed reduction (H-TPR), scanning electron microscope (SEM), and transmission electron microscopy (TEM) techniques. The UAMR method proved to be superior, especially when the Ce/Zr molar ratio was lower than 1, in fabricating ceria-zirconia solid solutions with large BET surface area, high oxygen storage capacity (OSC), and low reduction temperature.

Keywords： membrane reaction     ceria-zirconia     Ce/Zr molar ratio     solid solution     hydrogen temperature-programmed reduction (H2-TPR)    

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Simultaneous enhanced ammonia and nitrate removal from secondary effluent in constructed wetlands using a new manganese-containing substrate

Frontiers of Environmental Science & Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11783-024-1807-4

Abstract:

● MnO2/PCL composite material (MPCM) enhances ammonia and nitrate removal in CWs.

Keywords： Constructed wetland     Nitrogen removal     Manganese redox     Polycaprolactone     Nitrous oxide    

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Emerging electrochemical processes for materials recovery from wastewater: Mechanisms and prospects

Lingchen Kong, Xitong Liu

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 5, doi: 10.1007/s11783-020-1269-2

Abstract: recovery applications: electrosorption based on carbonaceous and intercalation electrodes, electrochemical redox

Keywords： Materials recovery     Electrosorption     Capacitive deionization     Redox processes     Electrochemical precipitation    

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Oxidative stress and diabetes: antioxidative strategies

Pengju Zhang, Tao Li, Xingyun Wu, Edouard C. Nice, Canhua Huang, Yuanyuan Zhang

Frontiers of Medicine 2020, Volume 14, Issue 5,   Pages 583-600 doi: 10.1007/s11684-019-0729-1

Abstract: Considerable recent evidence suggests that the cellular reduction–oxidation (redox) imbalance leads toReactive oxide species (ROS) can also directly oxidize certain proteins (defined as redox modification

Keywords： diabetes     oxidative stress     redox modification     antioxidative therapy     novel antioxidant delivery    

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Title Author Date Type Operation

Photoreduction adjusted surface oxygen vacancy of BiMoO for boosting photocatalytic redox performance

Journal Article

High butanol production by regulating carbon, redox and energy in Clostridia? ?

Jianfa Ou,Chao Ma,Ningning Xu,Yinming Du,Xiaoguang (Margaret) Liu

Journal Article

Characterization and comparison of organic functional groups effects on electrolyte performance for vanadium redox

Journal Article

Probing the redox process of

Rui Lu, Wei Chen, Wen-Wei Li, Guo-Ping Sheng, Lian-Jun Wang, Han-Qing Yu

Journal Article

Nitrifying population dynamics in a redox stratified membrane biofilm reactor (RSMBR) for treating ammonium-rich

Rongchang WANG, Xinmin ZHAN, Yalei ZHANG, Jianfu ZHAO

Journal Article

Persistent free radicals in humin under redox conditions and their impact in transforming polycyclic

Hanzhong Jia, Yafang Shi, Xiaofeng Nie, Song Zhao, Tiecheng Wang, Virender K. Sharma

Journal Article

Pressure drop analysis on the positive half-cell of a cerium redox flow battery using computational fluid

Fernando F. Rivera, Berenice Miranda-Alcántara, Germán Orozco, Carlos Ponce de León, Luis F. Arenas

Journal Article

Redox flow batteries—Concepts and chemistries for cost-effective energy storage

Matthäa Verena HOLLAND-CUNZ, Faye CORDING, Jochen FRIEDL, Ulrich STIMMING

Journal Article

Iron oxidation-reduction and its impacts on cadmium bioavailability in paddy soils: a review

Chunhua ZHANG, Ying GE, Huan YAO, Xiao CHEN, Minkun HU

Journal Article

Redox reactions of iron and manganese oxides in complex systems

Jianzhi Huang, Huichun Zhang

Journal Article

β-Nickel hydroxide cathode material for nano-suspension redox flow batteries

Yue LI, Cheng HE, Elena V. TIMOFEEVA, Yujia DING, Javier PARRONDO, Carlo SEGRE, Vijay RAMANI

Journal Article

Preparation of ceria-zirconia solid solution with enhanced oxygen storage capacity and redox performance

Lijing MENG, Licheng LIU, Xuehong ZI, Hongxing DAI, Hong HE, Zhen ZHAO, Xinping WANG,

Journal Article

Simultaneous enhanced ammonia and nitrate removal from secondary effluent in constructed wetlands using a new manganese-containing substrate

Journal Article

Emerging electrochemical processes for materials recovery from wastewater: Mechanisms and prospects

Lingchen Kong, Xitong Liu

Journal Article

Oxidative stress and diabetes: antioxidative strategies

Pengju Zhang, Tao Li, Xingyun Wu, Edouard C. Nice, Canhua Huang, Yuanyuan Zhang

Journal Article