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Influence of Fe on electrocatalytic activity of iron-nitrogen-doped carbon materials toward oxygen reduction

Lin LI, Cehuang FU, Shuiyun SHEN, Fangling JIANG, Guanghua WEI, Junliang ZHANG

Frontiers in Energy 2022, Volume 16, Issue 5,   Pages 812-821 doi: 10.1007/s11708-020-0669-0

Abstract: Among different M-N-C electrocatalysts, the series of Fe-N-C materials are highly favored because ofFe addition in the second heat treatment usually performed after acid leaching in the catalyst synthesiswill, in turn, guide the design of Fe-N-C materials with enhanced performance.Herein, a series of Fe-N-C electrocatalysts are synthesize and the influence of Fe on the ORR activityIt is deduced that the active site lies in the structure of Fe-N , accompanied with the addition of appropriate

Keywords： oxygen reduction reaction     Fe-N-C     active sites     Fe addition     second heat treatment    

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Sinks of steel in China–addition to in-use stock, export and loss

Hua GUO,Tianzhu ZHANG

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 1,   Pages 141-149 doi: 10.1007/s11783-014-0696-3

Abstract: The researchers conclude that addition to in-use stock is the main driver of steel demand and that the10-year average addition to in-use stock accounted for 77% of the steel sinks, in which 55% of the addition

Keywords： steel demand     driver     Material Flow Analysis (MFA)     Substance Flow Analysis (SFA)     addition to in-use stock    

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The performance of nitrate-reducing Fe(II) oxidation processes under variable initial Fe/N ratios: The

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 4, doi: 10.1007/s11783-020-1366-2

Abstract:

•Bacterially-mediated coupled N and Fe processes examined in incubation

Keywords： Denitrification     N2O emission     Fe(II) oxidation     Fe/N ratio     Fe minerals    

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Effect of short-term atrazine addition on the performance of an anaerobic/anoxic/oxic process

Changyong WU, Xiaoling LI, Zhiqiang CHEN, Yongzhen PENG,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 2,   Pages 150-156 doi: 10.1007/s11783-010-0020-9

Abstract: wastewater treatment process was implemented to treat domestic wastewater with short-term atrazine additionThe results showed that atrazine addition did not affect the removal of COD.The specific NH NO reduction rate decreased slightly due to the short-term atrazine addition.The phosphorus removal rate was not affected by the short-term addition of atrazine under the appliedHowever, more poly-hydroxy-alkanoate (PHA) was generated and utilized during atrazine addition.

Keywords： biological nutrient removal     atrazine     anaerobic/anoxic/oxic (A2O) process     oxygen demand removal     oxygen uptake rate (OUR)    

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Cadmium removal mechanistic comparison of three Fe-based nanomaterials: Water-chemistry and roles ofFe dissolution

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 12, doi: 10.1007/s11783-022-1586-8

Abstract:

● nZVI, S-nZVI, and nFeS were systematically compared for Cd(II) removal.

Keywords： Nano zero valent iron     Sulfided zero valent iron     FeS     Cd(II) immobilization     Fe dissolution    

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Hydration, microstructure and autogenous shrinkage behaviors of cement mortars by addition of superabsorbent

Beibei SUN, Hao WU, Weimin SONG, Zhe LI, Jia YU

Frontiers of Structural and Civil Engineering 2020, Volume 14, Issue 5,   Pages 1274-1284 doi: 10.1007/s11709-020-0656-x

Abstract: Superabsorbent Polymer (SAP) has emerged as a topic of considerable interest in recent years. The present study systematically and quantitively investigated the effect of SAP on hydration, autogenous shrinkage, mechanical properties, and microstructure of cement mortars. Influences of SAP on hydration heat and autogenous shrinkage were studied by utilizing TAM AIR technology and a non-contact autogenous shrinkage test method. Scanning Electron Microscope (SEM) was employed to assess the microstructure evolution. Although SAP decreased the peak rate of hydration heat and retarded the hydration, it significantly increased the cumulative heat, indicating SAP helps promote the hydration. Hydration promotion caused by SAP mainly occurred in the deceleration period and attenuation period. SAP can significantly mitigate the autogenous shrinkage when the content ranged from 0 to 0.5%. Microstructure characteristics showed that pores and gaps were introduced when SAP was added. The microstructure difference caused by SAP contributed to the inferior mechanical behaviors of cement mortars treated by SAP.

Keywords： Superabsorbent Polymer     mechanical properties     hydration heat     autogenous shrinkage     microstructure    

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Synergistic effect of V and Fe in Ni/Fe/V ternary layered double hydroxides for efficient and durable

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 1,   Pages 102-115 doi: 10.1007/s11705-022-2179-6

Abstract: Herein, via a one-pot hydrothermal method, Ni/Fe/V ternary layered double hydroxides (NiFeV-LDH) derivedBy changing the feeding ratio of Fe and V salts, the prepared ternary hydroxides were optimized.At an Fe:V ratio of 0.5:0.5, NiFeV-LDH exhibits outstanding OER activity superior to that of the binarythe third metal into bimetallic hydroxide layers: (a) Fe plays a crucial role as the active site; (b) electron-withdrawing V stabilizes the high valence state of Fe, thus accelerating the OER process;

Keywords： oxygen evolution reaction     electrocatalysts     ternary layered double hydroxides     long-term stability    

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Floret-like Fe–N nanoparticle-embedded porous carbon superstructures from a Fe-covalent triazine polymer

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 5,   Pages 525-535 doi: 10.1007/s11705-022-2232-5

Abstract: Fe–Nx nanoparticles-embedded porous carbons with a desirable superstructure have attractedHerein, we employed Fe-coordinated covalent triazine polymer for the fabrication of Fe–Nxwithin the covalent triazine polymer interwork in high proportions contributes to the generation of Fe/N coordination and subsequent Fe–Nx nanoparticles.Owing to the utilization of NaCl crystals, the resultant Fe/N@CNF-800 which was generated by pyrolysis

Keywords： Fe–Nx nanoparticles     hypersaline-confinement conversion     floret-like carbon     covalent    

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Mass loss and nutrient dynamics during litter decomposition in response to warming and nitrogen addition

Haiyan REN, Jie QIN, Baolong YAN, Alata, Baoyinhexige, Guodong HAN

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 1,   Pages 64-70 doi: 10.15302/J-FASE-2017194

Abstract: However, the temporal patterns of mass loss and nutrient release in response to warming and nitrogen additionA 2-year decomposition experiment aimed to examine the effects of warming and nitrogen addition on decompositionThe effects of warming and nitrogen addition on decomposition of litter of , a dominant species in aWarming and nitrogen addition significantly enhanced litter mass loss by 10% and 16%, respectively, andThis study indicates that warming and nitrogen addition increased litter mass loss through altering litter

Keywords： climate warming     grassland     litter decomposition     nitrogen deposition     nutrient release    

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Catalytic process modeling and sensitivity analysis of alkylation of benzene with ethanol over MIL-101(Fe) and MIL-88(Fe)

Ehsan Rahmani, Mohammad Rahmani

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6,   Pages 1100-1111 doi: 10.1007/s11705-019-1891-3

Abstract: A solvothermal method was used to synthesize MIL-101(Fe) and MIL-88(Fe), which were used for alkylation

Keywords： MOFs     alkylation     ethylbenzene     catalysts pellet model     kinetic model     sensitivity analysis    

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Effect of Fe on NO release during char combustion in air and O

Ying GU, Xiaowei LIU, Bo ZHAO, Minghou XU

Frontiers in Energy 2012, Volume 6, Issue 2,   Pages 200-206 doi: 10.1007/s11708-012-0181-2

Abstract: The Fe addition increases the NO conversion ratio, and the effect of Fe rises steeply with the processThe results also indicate that the release of NO increases more significantly with the Fe addition in

Keywords： NO     Fe     char     combustion     CO2    

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Study on Electrodeposited Zn-Fe-SiO2 Composite Coatings

Zhang Yingjie,Fan Yunying,Dong Peng,Luo Shaolin

Strategic Study of CAE 2008, Volume 10, Issue 3,   Pages 93-96

Abstract:

Experiments on electrodeposited Zn-Fe-SiO2 composite coatings are reported.Effects

Keywords： electrodeposition     composite coating     Zn-Fe-SiO2    

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Fabrication of recyclable Fe chelated aminated polypropylene fiber for efficient clean-up of phosphate

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 7,   Pages 840-852 doi: 10.1007/s11705-022-2253-0

Abstract: Herein, a Fe3+-loaded aminated polypropylene fiber has been reported as an efficient phosphateThe remarkable phosphate removal ability of the fiber is due to Fe3+ immobilization, and itIn addition, the phosphate removal efficiency of the fiber can exceed 99% under continuous flow conditionsthe adsorption of phosphate on the fiber mainly depended on the chemical adsorption of the modified Fe

Keywords： phosphate adsorption     aminated polypropylene fiber     Fe3+     ligand exchange     reusability    

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Asymmetric transfer hydrogenation of prochiral ketone catalyzed over Fe-CS/SBA-15 catalyst

XUE Ping, WU Tao

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3,   Pages 251-255 doi: 10.1007/s11705-007-0045-1

Abstract: A heterogeneous chiral catalyst Fe(III)-CS (chitosan) complex/mesoporous molecular sieve SBA-15 (Santaprochiral acetophenone and 4-methyl-2-pentanone to corresponding chiral alcohols were carried out on Fe-CSEffects of Fe content in catalyst, reaction temperature, reaction time and promoter KOH concentrationFe-CS/SBA-15 with 2.2% mass fraction Fe exhibits considerable enantioselectivity and catalytic activity

Keywords： asymmetric transfer     enantioselectivity     Fe-CS/SBA-15     aliphatic     aromatic    

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Controllable Fe/HCS catalysts in the Fischer-Tropsch synthesis: Effects of crystallization time

Yifei Wang, Shouying Huang, Xinsheng Teng, Hongyu Wang, Jian Wang, Qiao Zhao, Yue Wang, Xinbin Ma

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 5,   Pages 802-812 doi: 10.1007/s11705-019-1866-4

Abstract: Among iron carbides, Fe C, as an active phase, has barely been studied due to its thermodynamic instabilityHere, we fabricated a series of Fe C embedded in hollow carbon sphere (HCS) catalysts.investigate the relationship between the geometric structure of the HCS and the physic-chemical properties of Feactivity in the FTS due to its high porosity, appropriate electronic environment, and relatively high Fe

Keywords： Fischer–Tropsch synthesis     Fe-based catalyst     Fe2C     hollow carbon sphere     crystallization time    

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Title Author Date Type Operation

Influence of Fe on electrocatalytic activity of iron-nitrogen-doped carbon materials toward oxygen reduction

Lin LI, Cehuang FU, Shuiyun SHEN, Fangling JIANG, Guanghua WEI, Junliang ZHANG

Journal Article

Sinks of steel in China–addition to in-use stock, export and loss

Hua GUO,Tianzhu ZHANG

Journal Article

The performance of nitrate-reducing Fe(II) oxidation processes under variable initial Fe/N ratios: The

Journal Article

Effect of short-term atrazine addition on the performance of an anaerobic/anoxic/oxic process

Changyong WU, Xiaoling LI, Zhiqiang CHEN, Yongzhen PENG,

Journal Article

Cadmium removal mechanistic comparison of three Fe-based nanomaterials: Water-chemistry and roles ofFe dissolution

Journal Article

Hydration, microstructure and autogenous shrinkage behaviors of cement mortars by addition of superabsorbent

Beibei SUN, Hao WU, Weimin SONG, Zhe LI, Jia YU

Journal Article

Synergistic effect of V and Fe in Ni/Fe/V ternary layered double hydroxides for efficient and durable

Journal Article

Floret-like Fe–N nanoparticle-embedded porous carbon superstructures from a Fe-covalent triazine polymer

Journal Article

Mass loss and nutrient dynamics during litter decomposition in response to warming and nitrogen addition

Haiyan REN, Jie QIN, Baolong YAN, Alata, Baoyinhexige, Guodong HAN

Journal Article

Catalytic process modeling and sensitivity analysis of alkylation of benzene with ethanol over MIL-101(Fe) and MIL-88(Fe)

Ehsan Rahmani, Mohammad Rahmani

Journal Article

Effect of Fe on NO release during char combustion in air and O

Ying GU, Xiaowei LIU, Bo ZHAO, Minghou XU

Journal Article

Study on Electrodeposited Zn-Fe-SiO2 Composite Coatings

Zhang Yingjie,Fan Yunying,Dong Peng,Luo Shaolin

Journal Article

Fabrication of recyclable Fe chelated aminated polypropylene fiber for efficient clean-up of phosphate

Journal Article

Asymmetric transfer hydrogenation of prochiral ketone catalyzed over Fe-CS/SBA-15 catalyst

XUE Ping, WU Tao

Journal Article

Controllable Fe/HCS catalysts in the Fischer-Tropsch synthesis: Effects of crystallization time

Yifei Wang, Shouying Huang, Xinsheng Teng, Hongyu Wang, Jian Wang, Qiao Zhao, Yue Wang, Xinbin Ma

Journal Article