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Rh₂O₃/hexagonal CePO₄ nanocatalysts for N₂O decomposition

Huan Liu, Zhen Ma

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 4, Pages 586-593 doi: 10.1007/s11705-017-1659-6

Abstract: Rh(NO ) was then used as a precursor for the impregnation of Rh O onto these CePO materials.The Rh O supported on the CePO nanowires was much more active for the catalytic decomposition of NO than the Rh O supported on CePO nanorods., H O or O /H O) on the N O decomposition was also investigated.The samples were characterized by N adsorption-desorption, inductively coupled plasma optical emission

Keywords： Rh₂O₃ CePO₄ N₂O decomposition

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NiCo2O4@quinone-rich N–C core–shell nanowires as composite electrode for electric double layer capacitor

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 4, Pages 373-386 doi: 10.1007/s11705-022-2223-6

Abstract: their performance and the amount of carbon material loaded on the electrodes, in this work, NiCo₂O₄ nanowires were firstly grown on the substrate of active carbon cloth to provide theThen, the quinone-rich nitrogen-doped carbon shell structure was formed around NiCo₂O_{results showed that the composite electrode displayed an area-specific capacitance of 1794 mF∙cm^–2 at the current density of 1 mA∙cm^–2.}

Keywords： carbon cloth NiCo₂O₄ nanowires core−shell structure quinone-rich electric double

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N₂O emission from a sequencing batch reactor for biological N and P removal from wastewater

Lei SHEN,Yuntao GUAN,Guangxue WU,Xinmin ZHAN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5, Pages 776-783 doi: 10.1007/s11783-013-0586-0

Abstract: Nitrous oxide (N O) is a greenhouse gas that can be released during biological nitrogen removal fromN O emission from a sequencing batch reactor (SBR) for biological nitrogen and phosphorus removal fromO emission and to study the effects of heterotrophic activities on N O emission during nitrification.N O emission during denitrification mainly occurred with stored organic carbon as the electron donor.The ratio of N O emission to the removed ammonium nitrogen (N O-N/NH -N) was 2.5% in the SBR system with

Keywords： biological nutrient removal denitrification greenhouse gas nitrification nitrous oxide

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CH₄ and N₂O emissions from double-rice cropping system as affected by Chinese milk

Heshui XU,Dengyun LI,Bo ZHU,Kai ZHANG,Yadong YANG,Chen WANG,Ying JIANG,Zhaohai ZENG

Frontiers of Agricultural Science and Engineering 2017, Volume 4, Issue 1, Pages 59-68 doi: 10.15302/J-FASE-2017137

Abstract: Chinese milk vetch (CMV) and rice straw (RS) were incorporated into soil to substitute for synthetic NHowever, little is known about the integrated impacts of CMV and RS incorporation on CH and N O emissionsO emissions.CMV and/or RS incorporation produced equivalent or slightly more grain yield, while reducing N O emissionsN O emission, but enhanced CH emission.

Keywords： Chinese milk vetch CH₄ double-rice cropping system grain yield N₂O rice straw

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Production of N

Youkui GONG,Yongzhen PENG,Shuying WANG,Sai WANG

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 4, Pages 589-597 doi: 10.1007/s11783-013-0571-7

Abstract: The N O production in two nitrogen removal processes treating domestic wastewater was investigated inResults showed that N O emission happened in the aerobic phase rather than in the anoxic phase.The dissolved N O was reduced to N in the anoxic denitrification phase.Higher nitrite accumulation resulted in higher N O emission in the short-cut nitrogen removal processPulse-wise addition of 20 mg gave rise to 3-fold of N O emission in the conventional N-removal process

Keywords： conventional N-removal process N₂O short-cut N-removal process nitrite accumulation ammonia

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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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Effects of Pd doping on N

Mingxin Dong, Jun Wang, Jinxin Zhu, Jianqiang Wang, Wulin Wang, Meiqing Shen

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 6, doi: 10.1007/s11783-017-0976-9

Abstract: N O is a powerful greenhouse gas and plays an important role in destructing the ozone layer.This present work investigated the effects of Pd doping on N O formation over Pt/BaO/Al O catalyst.Compared with Pt/BaO/Al O , (Pt/BaO/Al O +Pd/Al O ) produced less N O and more NH during NO storageN leading to a decrease in N O formation.Most of N O formed over (Pt-Pd/BaO/Al O +Al O ) was originated from Pd/BaO/Al O component.

Keywords： NO_x storage reduction Pt/BaO/Al₂O₃ Pd doping N₂O formation

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Physical and chemical processes of wintertime secondary nitrate aerosol formation

Qi YING

Frontiers of Environmental Science & Engineering 2011, Volume 5, Issue 3, Pages 348-361 doi: 10.1007/s11783-011-0343-1

Abstract: In the nighttime hours, both the gas phase N O reactions with water vapor and the N O heterogeneousThe N O reactions are most import near the surface to a few hundred meters above surface with a maximumsecondary nitrate increase rate of 1 μg·m ·d and are more significant in the rural areas where the O

Keywords： secondary nitrate aerosol N₂O₅ heterogeneous reaction process analysis

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Hydroxyl radical intensified Cu

Wenyue Li, Min Chen, Zhaoxiang Zhong, Ming Zhou, Weihong Xing

Frontiers of Environmental Science & Engineering 2020, Volume 14, Issue 6, doi: 10.1007/s11783-020-1281-6

Abstract: Abstract • Cu2O NPs/H2O2 Fenton process was intensified by membrane dispersion. • DMAc removal was enhancedHigh-concentration industrial wastewater containing N,N-dimethylacetamide (DMAc) from polymeric membranemanufacturer was degraded in Cu2O NPs/H2O2 Fenton process.DMAc initial concentration (C0) and H2O2 flux (Jp) had major influence on mass transfer and kinetics,H2O and NO3− (rather than NH3 from biodegradation).

Keywords： Ceramic membrane reactor N N-dimethylacetamide Fenton process Cu₂O Wastewater

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Phylogenetic diversity of NO reductases, new tools for monitoring, and insights into NO production in natural and engineered environments

Frontiers of Environmental Science & Engineering 2022, Volume 16, Issue 10, doi: 10.1007/s11783-022-1562-3

Abstract:

● 548 representative nor genes were collected to create complete phylogenetic trees.

Keywords： N₂O Greenhouse gas NO reductase NO dismutase Primer Crystal structure

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New insight into effect of potential on degradation of Fe-N-C catalyst for ORR

Yanyan GAO, Manman QI, Liang HE, Haiping CHEN, Wenzhe LUO, Ming HOU, Zhigang SHAO

Frontiers in Energy 2021, Volume 15, Issue 2, Pages 421-430 doi: 10.1007/s11708-021-0727-2

Abstract: In recent years, Fe-N-C catalyst is particularly attractive due to its high oxygen reduction reactionHowever, the durability problems still pose challenge to the application of Fe-N-C catalyst.Although considerable work has been done to investigate the degradation mechanisms of Fe-N-C catalystIn fact, the 2e pathway in the ORR process of Fe-N-C catalyst would result in the formation of H O ,by quantifying the H O intermediate.

Keywords： proton exchange membrane fuel cells (PEMFCs) oxygen reduction reaction (ORR) Fe-N-C catalyst potential H₂O₂ degradation

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Inexpensive synthesis of a high-performance Fe

Nadir Abbas, Godlisten N. Shao, Syed M. Imran, Muhammad S. Haider, Hee Taik Kim

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 3, Pages 405-416 doi: 10.1007/s11705-016-1579-x

Abstract: A sol-gel technique has been developed for the synthesis of a magnetite-silica-titania (Fe O -SiO -TiO

Keywords： sol-gel photocatalysis magnetic recovery TiO₂ Fe₃O₄ SiO₂

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Pest management with biopesticides

James N. SEIBER, Joel COATS, Stephen O. DUKE, Aaron D. GROSS

Frontiers of Agricultural Science and Engineering 2018, Volume 5, Issue 3, Pages 295-300 doi: 10.15302/J-FASE-2018238

Abstract:

Biopesticides are attracting interest as alternatives to conventional pesticides but without many of the non-target effects, promising a better record of safety and sustainability in pest control practices. In this article we summarize and discuss the current status and future promise of biopesticides, including how biopesticides use may increase the quality and safety of the food supply.

Keywords： biopesticide GMO crops pest management

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Green Plant Protection Innovation: Challenges and Perspectives

Baoan Song, James N. Seiber, Stephen O. Duke, Qing X. Li

Engineering 2020, Volume 6, Issue 5, Pages 483-484 doi: 10.1016/j.eng.2020.04.001

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Synthesis and properties of water-soluble 1,9-dialkyl-substituted BF

Dan Wu, Gonzalo Durán-Sampedro, Donal F. O’Shea

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 1, Pages 97-104 doi: 10.1007/s11705-019-1828-x

Abstract: Bis-alkylsulfonic acid and polyethylene glycol (PEG)-substituted BF azadipyrromethenes have been synthesized by an adaptable and versatile route. Only four synthetic stages were required to produce the penultimate fluorophore compounds, containing either two alcohol or two terminal alkyne substituents. The final synthetic step introduced either sulfonic acid or polyethylene glycol groups to impart aqueous solubility. Sulfonic acid groups were introduced by reaction of the bis-alcohol-substituted fluorophore with sulfur trioxide, and a double Cu(I)-catalyzed cycloaddition reaction between the bis-alkyne fluorophore and methoxypolyethylene glycol azide yielded a neutral bis-pegylated derivative. Both fluorophores exhibited excellent near-infrared (NIR) photophysical properties in methanol and aqueous solutions. Live cell microscopy imaging revealed efficient uptake and intracellular labelling of cells for both fluorophores. Their simple synthesis, with potential for last-step structural modifications, makes the present NIR-active azadipyrromethene derivatives potentially useful as NIR fluorescence imaging probes for live cells.

Keywords： NIR-fluorophores live cell imaging NIR-AZA