Resource Type

Journal Article 121

Year

2023 10

2022 10

2021 9

2020 6

2019 7

2018 8

2017 8

2016 6

2015 6

2014 6

2013 6

2012 6

2011 13

2010 6

2009 4

2008 1

2007 6

2003 1

open ︾

Keywords

carbon dioxide 15

Carbon dioxide 7

adsorption 4

Sulfur dioxide 3

manganese oxides 3

China 2

Graphene oxide 2

Heavy metal 2

Methane 2

Reactive oxygen species 2

carbon dioxide capture 2

electroreduction 2

formic acid 2

ionic liquid 2

methane 2

separation 2

titanium dioxide 2

2 1

25-furandicarboxylic acid 1

open ︾

Search scope:

排序： Display mode:

Effects of humic acid and surfactants on the aggregation kinetics of manganese dioxide colloids

Xiaoliu HUANGFU,Yaan WANG,Yongze LIU,Xixin LU,Xiang ZHANG,Haijun CHENG,Jin JIANG,Jun MA

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 105-111 doi: 10.1007/s11783-014-0726-1

Abstract: The aggregation of common manganese dioxide (MnO ) colloids has great impact on their surface reactivity

Keywords： humic acid     surfactant     aggregation kinetics     drinking water     manganese dioxide colloids    

HTML PDF Collect

Tripotassium citrate monohydrate derived carbon nanosheets as a competent assistant to manganese dioxide

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 3,   Pages 420-432 doi: 10.1007/s11705-021-2065-7

Abstract: Subsequently, a well-designed manganese dioxide/carbon nanosheets composite was synthesized through hydrothermalThe carbon nanosheets served as the substrate for growing the manganese dioxide, regulating its distributionMany manganese dioxide nanosheets grew vertically on the numerous functional groups generated on theFinally, an asymmetric supercapacitor with active carbon as the cathode and manganese dioxide/carbonThis study may provide valuable insights for applying carbon materials and manganese dioxide in the energy

Keywords： carbon nanosheets     manganese dioxide     asymmetric supercapacitors     energy density     power density    

HTML PDF Collect

Removal of lead from aqueous solution by hydroxyapatite/manganese dioxide composite

Lijing DONG,Zhiliang ZHU,Yanling QIU,Jianfu ZHAO

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 28-36 doi: 10.1007/s11783-014-0722-5

Abstract: A novel composite adsorbent, hydroxyapatite/manganese dioxide (HAp/MnO ), has been developed for the

Keywords： lead     composite materials     manganese dioxide     hydroxyapatite     adsorption    

HTML PDF Collect

Benzene conversion by manganese dioxide assisted silent discharge plasma

LU Bin, JI Min, YU Xin, FENG Tao, YAO Shuiliang

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 4,   Pages 477-481 doi: 10.1007/s11783-007-0076-3

Abstract: Non-thermal plasma technologies have shown their promising potential specially for the low concentration of volatile organic compound control in indoor air in recent years. But it is also high energy consuming. So, to improve the en

Keywords： consuming     Non-thermal     promising     volatile     compound    

HTML PDF Collect

Evolution of humic substances in polymerization of polyphenol and amino acid based on non-destructive characterization

Jianmei Zou, Jianzhi Huang, Huichun Zhang, Dongbei Yue

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 1, doi: 10.1007/s11783-020-1297-y

Abstract: Abstract • Humification evolution was identified with non-destructive characterization method. • Humification process from precursors to fulvic and humic acid was confirmed. • MnO2 alone had limited oxidation ability to form HA. • MnO2 played a key role as a catalyst to transform FA to HA in the presence of O2. • MnO2 could affect the structure of the humification products. Abiotic humification is important in the formation and evolution of organic matter in soil and compost maturing processes. However, the roles of metal oxides in abiotic humification reactions under micro-aerobic remain ambiguous. The aim of this study was to use non-destructive measurement methods to investigate the role of MnO2 in the evolution of humic substances (HSs) during oxidative polymerization of polyphenol-amino acid. Our results suggested a synergistic effect between MnO2 and O2 in promoting the polymerization reaction and identified that MnO2 alone had a limited ability in accelerating the transformation of fulvic acid (FA) to humic acid (HA), whereas O2 was the key factor in the process. Two-dimensional correlation spectroscopy (2D-COS) showed that the evolution in the UV-vis spectra followed the order of 475–525 nm>300–400 nm>240–280 nm in the humification process, indicating the formation of simple organic matter followed by FA and then HA. 13C nuclear magnetic resonance (13C NMR) analysis revealed that the products under both air and N2 conditions in the presence of MnO2 had greater amounts of aromatic-C than in the absence of MnO2, demonstrating that MnO2 affected the structure of the humification products. The results of this study provided new insights into the theory of abiotic humification.

Keywords： Two-dimensional correlation spectroscopy (2D-COS)     Humic substances (HSs)     Humification     Manganese dioxide    

HTML PDF Collect

Catalytic activity of manganese oxide supported on alumina in the synthesis of quinoxalines

Rekha M., H. Kathyayini, N. Nagaraju

Frontiers of Chemical Science and Engineering 2013, Volume 7, Issue 4,   Pages 415-421 doi: 10.1007/s11705-013-1360-3

Abstract: Two catalysts, alumina and manganese oxide supported on alumina, have been prepared by calcination and

Keywords： alumina     manganese oxide deposited on alumina     quinoxaline synthesis    

HTML PDF Collect

Comparing the adsorption behaviors of Cd, Cu and Pb from water onto Fe-Mn binary oxide, MnO

Wei XU,Huachun LAN,Hongjie WANG,Hongming LIU,Jiuhui QU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 3,   Pages 385-393 doi: 10.1007/s11783-014-0648-y

Abstract: The adsorption potential of FMBO, FeOOH, MnO for the removal of Cd , Cu and Pb in aqueous systems was investigated in this study. Comparing to FMBO and FeOOH, MnO offered a much higher removal capacity towards the three metal ions. The maximal adsorption capacity of MnO for Cd , Cu and Pb were 1.23, 2.25 and 2.60 mmol·g , respectively. And that for FMBO were 0.37, 1.13, and 1.18 mmol·g and for FeOOH were 0.11, 0.86 and 0.48 mmol·g , respectively. The adsorption behaviors of the three metal ions on the three adsorbents were all significantly affected by pH values and heavy metal removal efficiency increased with pH increased. The Langmuir and Freundlich adsorption models were used to describe the adsorption equilibrium of the three metal ions onto the three adsorbents. Results showed that the adsorption equilibrium data fitted well to Langmuir isotherm and this indicated that adsorption of metal ions occurred on the three metal oxides adsorbents limited to the formation of a monolayer. More negative charged of MnO surface than that of FMBO and FeOOH could be ascribed by lower pH of MnO than that of FMBO and FeOOH and this could contribute to more binding sites on MnO surface than that of FMBO and FeOOH. The higher metal ions uptake by MnO than FMBO and FeOOH could be well explained by the surface charge mechanism.

Keywords： heavy metals     Fe-Mn binary oxide     manganese dioxide     ferric hydroxide     adsorption    

HTML PDF Collect

Coextraction of vanadium and manganese from high-manganese containing vanadium wastewater by a solvent

Zishuai Liu, Yimin Zhang, Zilin Dai, Jing Huang, Cong Liu

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 5,   Pages 902-912 doi: 10.1007/s11705-019-1887-z

Abstract: High-manganese containing vanadium wastewater (HMVW) is commonly produced during the vanadium extractionFor the precipitation process, 91.05% of manganese was recovered as MnCO which meets the III grade standard

Keywords： high-manganese containing vanadium wastewater     solvent extraction     carbonate precipitation     vanadium titano-magnetite    

HTML PDF Collect

The role of manganese oxides in the activation of peroxymonosulfate (PMS)

Jianzhi Huang, Huichun Zhang

Frontiers of Environmental Science & Engineering 2019, Volume 13, Issue 5, doi: 10.1007/s11783-019-1158-8

Abstract: Manganese oxides (MnOx) have been demonstrated to be effective materials to activate Oxone (i.e., PMS

Keywords： Peroxymonosulfate     Manganese oxides     Catalyst     Oxidant    

HTML PDF Collect

Multivalent manganese oxides with high electrocatalytic activity for oxygen reduction reaction

Xiangfeng Peng, Zhenhai Wang, Zhao Wang, Yunxiang Pan

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 790-797 doi: 10.1007/s11705-018-1706-y

Abstract: The enhanced activity could be due to the coexistence of manganese ions with different valences, the

Keywords： oxygen reduction reaction     manganese oxides     mixed valences of manganese     oxygen adsorption     dielectric barrier    

HTML PDF Collect

Chemical composition and formation mechanisms in the cathode-electrolyte interface layer of lithium manganese

Sahithya REDDIVARI, Christian LASTOSKIE, Ruofei WU, Junliang ZHANG

Frontiers in Energy 2017, Volume 11, Issue 3,   Pages 365-373 doi: 10.1007/s11708-017-0500-8

Abstract: Lithium manganese oxide (LiMn O ) is a principal cathode material for high power and high energy densityExperimental observations indicate that the manganese content of the electrolyte increases as an electrochemicalcell containing LiMn O ages, suggesting that active material loss by dissolution of divalent manganeseTo improve the retention of manganese in the active material, it is key to understand the reactions thatinvestigate the reactions occurring at the LiMn O cathode surface and the mechanisms that lead to manganese

Keywords： lithium manganese oxide batteries     reactive force field (ReaxFF)     cathode-electrolyte interface layer     molecular    

HTML PDF Collect

Occurance and control of manganese in a large scale water treatment plant

Youjun CHEN,Feng XIAO,Yongkang LIU,Dongsheng WANG,Ming YANG,Hua BAI,Jiong ZHANG

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 1,   Pages 66-72 doi: 10.1007/s11783-014-0637-1

Abstract: The continuous variations of dissolved oxygen (DO), manganese (Mn), pH, and their effect on manganeseManganese concentration increased from 0.1 to 0.4 mg·L under the condition that DO concentration decreasedThe different water treatment processes exhibited different efficiency on manganese removal.the suspended sludge, low elevation velocity in settling tank and slow filter rate, will benefit the manganeseDuring a high release of manganese in raw water, traditional coagulation-sedimentation and filtration

Keywords： manganese release     dissolved oxygen     settling filtration     pre-oxidation    

HTML PDF Collect

Visible light induces bacteria to produce superoxide for manganese oxidation

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 2, doi: 10.1007/s11783-023-1619-y

Abstract:

● Term of manganese-oxidizing microorganisms should be reconsidered

Keywords： Mn(II) oxidation     Manganese-oxidizing bacteria     Reactive oxygen species     Mn(III/IV) oxides    

HTML PDF Collect

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- and Fe-oxides in complex systems were reviewed. • Reductive reaction of Fe(II)/iron oxides in complex systems was examined. • Future research on examining the redox reactivity in complex systems was suggested. Conspectus Redox reactions of Fe- and Mn-oxides play important roles in the fate and transformation of many contaminants in natural environments. Due to experimental and analytical challenges associated with complex environments, there has been a limited understanding of the reaction kinetics and mechanisms in actual environmental systems, and most of the studies so far have only focused on simple model systems. To bridge the gap between simple model systems and complex environmental systems, it is necessary to increase the complexity of model systems and examine both the involved interaction mechanisms and how the interactions affected contaminant transformation. In this Account, we primarily focused on (1) the oxidative reactivity of Mn- and Fe-oxides and (2) the reductive reactivity of Fe(II)/iron oxides in complex model systems toward contaminant degradation. The effects of common metal ions such as Mn2+ , Ca2+, Ni2+, Cr3+ and Cu2+, ligands such as small anionic ligands and natural organic matter (NOM), and second metal oxides such as Al, Si and Ti oxides on the redox reactivity of the systems are briefly summarized.

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

HTML PDF Collect

Adsorptive behaviors of humic acid onto freshly prepared hydrous manganese dioxides

LIU Ruiping, LI Guibai, YANG Yanling, HE Wenjie, HAN Hongda

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 2,   Pages 240-245 doi: 10.1007/s11783-007-0041-1

Abstract: This study focused on the adsorptive behaviors of humic acid onto freshly prepared hydrous MnO(s) (δMnO), and investigated the feasibility of employing δMnO for humic acid removal from drinking water. Effects of such parameters as molecular mass of humic acid, kinds of divalent cations on adsorptive behaviors and possible mechanisms involved were investigated. This study indicated that humic acid with higher molecular mass exhibited more tendency of adsorbing onto &MnO than that with lower molecular mass. Ca facilitated more humic acid adsorption than Mg; UV-Vis spectra analysis indicated higher capabilities of Ca coordinating with acidic functional groups of humic acid than that of Mg. Additionally, ζ potential characterization indicated that Ca showed higher potential of increasing ζ potential of &MnO than Mg. Ca of 1.0 mmol/L increased ζ potential of δMnO

Keywords： Mg     molecular     functional     UV-Vis spectra     prepared hydrous    

HTML PDF Collect

Title Author Date Type Operation

Effects of humic acid and surfactants on the aggregation kinetics of manganese dioxide colloids

Xiaoliu HUANGFU,Yaan WANG,Yongze LIU,Xixin LU,Xiang ZHANG,Haijun CHENG,Jin JIANG,Jun MA

Journal Article

Tripotassium citrate monohydrate derived carbon nanosheets as a competent assistant to manganese dioxide

Journal Article

Removal of lead from aqueous solution by hydroxyapatite/manganese dioxide composite

Lijing DONG,Zhiliang ZHU,Yanling QIU,Jianfu ZHAO

Journal Article

Benzene conversion by manganese dioxide assisted silent discharge plasma

LU Bin, JI Min, YU Xin, FENG Tao, YAO Shuiliang

Journal Article

Evolution of humic substances in polymerization of polyphenol and amino acid based on non-destructive characterization

Jianmei Zou, Jianzhi Huang, Huichun Zhang, Dongbei Yue

Journal Article

Catalytic activity of manganese oxide supported on alumina in the synthesis of quinoxalines

Rekha M., H. Kathyayini, N. Nagaraju

Journal Article

Comparing the adsorption behaviors of Cd, Cu and Pb from water onto Fe-Mn binary oxide, MnO

Wei XU,Huachun LAN,Hongjie WANG,Hongming LIU,Jiuhui QU

Journal Article

Coextraction of vanadium and manganese from high-manganese containing vanadium wastewater by a solvent

Zishuai Liu, Yimin Zhang, Zilin Dai, Jing Huang, Cong Liu

Journal Article

The role of manganese oxides in the activation of peroxymonosulfate (PMS)

Jianzhi Huang, Huichun Zhang

Journal Article

Multivalent manganese oxides with high electrocatalytic activity for oxygen reduction reaction

Xiangfeng Peng, Zhenhai Wang, Zhao Wang, Yunxiang Pan

Journal Article

Chemical composition and formation mechanisms in the cathode-electrolyte interface layer of lithium manganese

Sahithya REDDIVARI, Christian LASTOSKIE, Ruofei WU, Junliang ZHANG

Journal Article

Occurance and control of manganese in a large scale water treatment plant

Youjun CHEN,Feng XIAO,Yongkang LIU,Dongsheng WANG,Ming YANG,Hua BAI,Jiong ZHANG

Journal Article

Visible light induces bacteria to produce superoxide for manganese oxidation

Journal Article

Redox reactions of iron and manganese oxides in complex systems

Jianzhi Huang, Huichun Zhang

Journal Article

Adsorptive behaviors of humic acid onto freshly prepared hydrous manganese dioxides

LIU Ruiping, LI Guibai, YANG Yanling, HE Wenjie, HAN Hongda

Journal Article