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Boron and nitrogen co-doped porous carbon derived from sodium alginate enhanced capacitive deionization

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 2014-2024 doi: 10.1007/s11705-023-2346-4

Abstract: In this work, B and N co-doped porous carbon with micro-mesoporous structures is derived from sodiumalginate by a carbonization, activation, and hydrothermal doping process, which exhibits large specific

Keywords： capacitance deionization     porous carbon     B/N co-doping     heavy metal ions     water purification    

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Enhanced Fenton-like process over Cu/L(+)-ascorbic acid co-doping mesoporous silica for toxicity reduction

Frontiers of Environmental Science & Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11783-024-1804-7

Abstract:

● Cu-C-MSNs are developed via a co-doping step of Cu with L(+)-ascorbic

Keywords： Cation-π structures     Polarization electric field     Fenton-like process     Contaminants cleavage    

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CO, N, and CO/N mixed gas injection for enhanced shale gas recovery and CO geological storage

Frontiers in Energy 2023, Volume 17, Issue 3,   Pages 428-445 doi: 10.1007/s11708-023-0865-9

Abstract: For CO2/N2 mixed gas injection, with the increase of CO2 concentration2/N2 = 8:2 was close to that of pure CO2, about 40.24%.N2 was injected, while the breakthrough time of CO2 was prolonged, which indicatedthat with the increase of N2 concentration in the mixed gas, the breakthrough time of CO<2 gas injection was about 35.96%, while for mixed gas CO2/N2 = 8:2,

Keywords： shale gas     gas injection     competitive adsorption     enhanced shale gas recovery     CO2 geological    

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Tuning nitrogen defects and doping sulfur in carbon nitride for enhanced visible light photocatalytic

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 1,   Pages 93-101 doi: 10.1007/s11705-022-2175-x

Abstract: Defect construction and heteroatom doping are effective strategies for improving photocatalytic activityN4.The g-C3N4 with moderate concentration of N defects exhibited the highest photocatalytic3N4.The N vacancy-enriched and S-doped g-C3N4 are beneficial for widening absorption

Keywords： g-C3N4     nitrogen defect     sulfur doping     photodegradation     plasma    

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Non-thermal plasma for exhaust gases treatment

,Fernando GÓMEZ B.,Joel PACHECO P.,Arturo COLÍN C.,Víctor SÁNCHEZ-MENDIETA,Ricardo VALDIVIA B.

Frontiers of Mechanical Engineering 2015, Volume 10, Issue 3,   Pages 301-305 doi: 10.1007/s11465-015-0344-z

Abstract:

This article describes a study on a non-thermal plasma device to treat exhaust gases in an internal combustion engine. Several tests using a plasma device to treat exhaust gases are conducted on a Honda GX200-196 cm3 engine at different rotational speeds. A plasma reactor could be efficient in degrading nitrogen oxides and particulate matter. Monoxide and carbon dioxide treatment is minimal. However, achieving 1%–3% degradation may be interesting to reduce the emission of greenhouse gases.

Keywords： plasma treatment     NOx     CO     CO2     particulate matter     vehicle    

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Multi-functional 3D N-doped TiO

Zijian Cui, Kaiyue Zhang, Guangyu Xing, Yaqing Feng, Shuxian Meng

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 3,   Pages 395-404 doi: 10.1007/s11705-017-1643-1

Abstract: Three-dimensional TiO microspheres doped with N were synthesized by a simple single-step solvothermal

Keywords： DSSCs     N doping     scattering layer     electron lifetime    

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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: This present work investigated the effects of Pd doping on N O formation over Pt/BaO/Al O catalyst.These catalysts were first evaluated in NSR activity tests using H /CO as reductants and then carefullycharacterized by BET, CO chemisorption, CO-DRIFTs and H -TPR techniques.about N O formation mechanism.leading to a decrease in N O formation.

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

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Experimental and DFT insights into nitrogen and sulfur co-doped carbon nanotubes for effective desulfurization

Frontiers of Environmental Science & Engineering 2021, Volume 15, Issue 5, doi: 10.1007/s11783-021-1397-3

Abstract:

• Synthesis of NS-CNTS is used in a high desulfurization performance.

Keywords： Dibenzothiophene (DBT)     Tertiary methyl mercaptan     Adsorption     Carbon nano tube (CNT)     Desulfurization     Doping    

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Phosphorus-doped Ni–Co sulfides connected by carbon nanotubes for flexible hybrid supercapacitor

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 5,   Pages 491-503 doi: 10.1007/s11705-022-2257-9

Abstract: unsatisfactory performance of low specific capacity, low rate capability, and fast capacity loss exist in Ni–Co

Keywords： cobalt nickel sulfide     phosphorus-doping     hybrid supercapacitor     carbon nanotube     density functional    

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Inhibition of NO emission by adding antioxidant mixture in

B. ANAND

Frontiers in Energy 2015, Volume 9, Issue 2,   Pages 238-245 doi: 10.1007/s11708-015-0356-8

Abstract: antioxidants, namely, Succinimide (C H NO ), , dimethyl- -phenylenediamine-dihydrochloride (C H Cl Nwas observed for the antioxidant mixture in neat biodiesel, with a slight increase in unburned HC, CO

Keywords： NO emission     antioxidants     Succinimide     N     N-dimethyl-p-phenylenediamine-dihydrochloride     N-phenyl-p-phenylenediamine    

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NiBO (B = Mn or Co) catalysts for NH-SCR of NO at low-temperature in microwave field

Frontiers of Environmental Science & Engineering 2023, Volume 17, Issue 8, doi: 10.1007/s11783-023-1696-y

Abstract:

● Microwave-assisted catalytic NH3-SCR reaction over spinel oxides is carried out.

Keywords： Microwave field     Spinel oxides     NOx     Selective catalytic reduction    

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Cu-doped Bi/Bi2WO6 catalysts for efficient N2 fixation by photocatalysis

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 10,   Pages 1412-1422 doi: 10.1007/s11705-023-2312-1

Abstract: sub>2WO6 was synthesized via a solvothermal method and applied it in photocatalytic NN2 fixation and may providemore information on the design and preparation of heteroatom-doped semiconductor photocatalysts for N<

Keywords： Bi2WO6     Cu doping     work function     photocatalytic N2 fixation     charge    

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Chloride binding and time-dependent surface chloride content models for fly ash concrete

MUTHULINGAM,B. N. RAO

Frontiers of Structural and Civil Engineering 2016, Volume 10, Issue 1,   Pages 112-120 doi: 10.1007/s11709-015-0322-x

Abstract: Corrosion of embedded rebars is a classical deterioration mechanism of reinforced concrete structures exposed to chloride environments. Such environments can be attributed to the presence of seawater, deicing or sea-salts, which have high concentrations of chloride ion. Chloride ingress into concrete, essential for inducing rebar corrosion, is a complex interaction between many physical and chemical processes. The current study proposes two chloride ingress parameter models for fly ash concrete, namely: 1) surface chloride content under tidal exposure condition; and 2) chloride binding. First, inconsistencies in surface chloride content and chloride binding models reported in literature, due to them not being in line with past research studies, are pointed out. Secondly, to avoid such inconsistencies, surface chloride content and chloride binding models for fly ash concrete are proposed based upon the experimental work done by other researchers. It is observed that, proposed models are simple, consistent and in line with past research studies reported in literature.

Keywords： binding isotherms     chloride ingress     concrete     fly ash     surface chloride content    

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Morphological and mechanical characterization of a PMMA/CdS nanocomposite

RATHORE, N. S. SAXENA, K.B. SHARMA

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 2,   Pages 258-263 doi: 10.1007/s11705-010-1014-7

Abstract: Thick film of poly(methyl methacrylate) (PMMA)/CdS nanocomposite have been synthesized by the solution casting process. The nanostructure of the CdS particles has been ascertained through the small angle X-ray scattering (SAXS) technique. The surface morphological characterization of the PMMA/CdS nanocomposite has been done through scanning electron microscopy (SEM) analysis. The variation of mechanical loss factor (Tan ) with temperature and tensile properties of prepared samples have been studied using Dynamic Mechanical Analyzer (DMA). This study reveals that the glass transition temperature ( ), Young’s modulus, and fracture energy of the PMMA/CdS nanocomposite are greatly influenced by the existence of interfacial energetic interaction between dispersed CdS nanoparticles and the matrix of PMMA.

Keywords： poly(methyl methacrylate) (PMMA)     filler nanoparticles     polymer semiconducting nanocomposite     tensile properties     glass transition temperature    

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End-use energy utilization efficiency of Nigerian residential sector

OHUNAKIN,Bethrand N. NWANKWOJIKE,Ekwe B. EKWE

Frontiers in Energy 2014, Volume 8, Issue 3,   Pages 322-334 doi: 10.1007/s11708-014-0329-3

Abstract: In this paper, the end-use efficiencies of the different energy carriers and the overall energy efficiency in the Nigerian residential sector (NRS) were estimated using energy and exergy analysis. The energy and exergy flows were considered from 2006 to 2011. The overall energy efficiency ranges from 19.15% in 2006 to 20.19% in 2011 with a mean of (19.96±0.23)% while the overall exergy efficiency ranges from 4.34% in 2006 to 4.40% in 2011 with a mean of (4.31±0.059)%. The energy and exergy efficiency margin was 15.58% with a marginal improvement of 0.07% and 0.02%, respectively when compared with previous results. The contribution of the energy carriers to the total energy and exergy inputs were 1.45% and 1.43% for electricity, 1.95% and 3% for fossil fuel and 96.6% and 95.57% for bio-fuel. The result shows that approximately 65% of the residence use wood and biomass for domestic cooking and heating, and only a fraction of the residence have access to electricity. LPG was found to be the most efficient while kerosene, charcoal, wood and other biomass the least in this order. Electricity utilization exergy efficiency is affected by vapor-compression air conditioning application apart from low potential energy applications. In addition, this paper has suggested alternatives in the end-use application and has demonstrated the relevance of exergy analysis in enhancing sustainable energy policies and management and improved integration techniques.

Keywords： end-use     energy     exergy efficiency     residential sector     Nigeria    

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Title Author Date Type Operation

Boron and nitrogen co-doped porous carbon derived from sodium alginate enhanced capacitive deionization

Journal Article

Enhanced Fenton-like process over Cu/L(+)-ascorbic acid co-doping mesoporous silica for toxicity reduction

Journal Article

CO, N, and CO/N mixed gas injection for enhanced shale gas recovery and CO geological storage

Journal Article

Tuning nitrogen defects and doping sulfur in carbon nitride for enhanced visible light photocatalytic

Journal Article

Non-thermal plasma for exhaust gases treatment

,Fernando GÓMEZ B.,Joel PACHECO P.,Arturo COLÍN C.,Víctor SÁNCHEZ-MENDIETA,Ricardo VALDIVIA B.

Journal Article

Multi-functional 3D N-doped TiO

Zijian Cui, Kaiyue Zhang, Guangyu Xing, Yaqing Feng, Shuxian Meng

Journal Article

Effects of Pd doping on N

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

Journal Article

Experimental and DFT insights into nitrogen and sulfur co-doped carbon nanotubes for effective desulfurization

Journal Article

Phosphorus-doped Ni–Co sulfides connected by carbon nanotubes for flexible hybrid supercapacitor

Journal Article

Inhibition of NO emission by adding antioxidant mixture in

B. ANAND

Journal Article

NiBO (B = Mn or Co) catalysts for NH-SCR of NO at low-temperature in microwave field

Journal Article

Cu-doped Bi/Bi2WO6 catalysts for efficient N2 fixation by photocatalysis

Journal Article

Chloride binding and time-dependent surface chloride content models for fly ash concrete

MUTHULINGAM,B. N. RAO

Journal Article

Morphological and mechanical characterization of a PMMA/CdS nanocomposite

RATHORE, N. S. SAXENA, K.B. SHARMA

Journal Article

End-use energy utilization efficiency of Nigerian residential sector

OHUNAKIN,Bethrand N. NWANKWOJIKE,Ekwe B. EKWE

Journal Article