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Efficient dechlorination of 2,4-dichlorophenol in an aqueous media with a mild pH using a Pd/TiO

Jiangkun DU,Jianguo BAO,Wei HU

Frontiers of Environmental Science & Engineering 2015, Volume 9, Issue 5,   Pages 919-928 doi: 10.1007/s11783-015-0794-x

Abstract: In this study, palladium-loaded titania nanotubes was fabricated on a titanium plate (Pd/TiO NTs/Ti)for efficient electrodechlorination of 2,4-chlorophenol with a mild pH condition.The nature of Pd/TiO NTs/Ti electrodes was characterized by field-emission scanning electron microscopeon titania nanotubes arrays on the Pd/TiO NTs/Ti surface.Furthermore, the intermediates analysis showed that the Pd/TiO NTs/Ti electrode could completely remove

Keywords： Pd/TiO2NTs/Ti cathode     chlorophenols     electrocatalytic dechlorination     wastewater treatment    

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Effective regeneration of thermally deactivated commercial V-W-Ti catalysts

Xuesong SHANG, Jianrong LI, Xiaowei YU, Jinsheng CHEN, Chi HE

Frontiers of Chemical Science and Engineering 2012, Volume 6, Issue 1,   Pages 38-46 doi: 10.1007/s11705-011-1167-z

Abstract: An effective method for the regeneration of thermally deactivated commercial monolith SCR catalysts was investigated. Two types of regenerated solutions, namely NH Cl (1 mol/L) and dilute H SO (0.5 mol/L), were employed to treat the used catalyst. The effects of temperature and the regeneration process on the structural and textural properties of the catalysts were determined by X-ray diffraction, scanning electron microscopy, N adsorption/desorption, elemental analysis and Fourier transform infrared spectroscopy. The results suggest that the anatase phase of the used catalyst is maintained after exposure to high temperatures. Some of the catalytic activity was restored after regeneration. The catalyst regenerated by aqueous NH Cl had a higher activity than that of the catalyst treated by dilute H SO . The main reason is that the NH generated from the decomposition of NH Cl at high temperatures can be adsorbed onto the catalyst which promotes the reaction. The aggregated V O were partially re-dispersed during the regeneration process, and the intrinsic oxidation of ammonia with high concentrations of O is a factor that suppresses the catalytic activity.

Keywords： V2O5-WO3/TiO2 catalysts     thermal deactivation     regeneration     NH4Cl     dilute H2SO4 solution    

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An electrochemical process that uses an Fe

Chaojie Jiang, Lifen Liu, John C. Crittenden

Frontiers of Environmental Science & Engineering 2016, Volume 10, Issue 4, doi: 10.1007/s11783-016-0860-z

Abstract: A bio-electrochemical fuel cell reactor with cathodic Fe /TiO generates electricity.It destroys recalcitrant pollutants in cathode chamber without photocatalysis.Fe /TiO generates reactive oxygenated species in the dark or under photocatalysis.electrochemical catalysis (PEC or EC) in a microbial fuel cell (MFC) was configured using a stainless-steel (SS) cathodecoated with Fe /TiO .

Keywords： Bio-anode     Photocatalytic cathode     Fe0/TiO2     ESR     Dye and antibiotics     Advanced oxidation    

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Facile synthesis and enhanced visible-light photocatalytic activity of Ti

Xiaojie Zhang,Lei Wang,Shuqing Chen,Yi Huang,Zhuonan Song,Miao Yu

Frontiers of Chemical Science and Engineering 2015, Volume 9, Issue 3,   Pages 349-358 doi: 10.1007/s11705-015-1523-5

Abstract: Ti -doped TiO nanosheets with tunable phase composition (doped TiO (A/R)) were synthesized via a hydrothermalmethod with high surface area anatase TiO nanosheets TiO (A) as a substrate, structure directing agentXRD and HRTEM measurements confirmed the existence of anatase-rutile phase junction, while Ti and single-electron-trappedsynthesis conditions, CH generation rate of doped TiO (A/R) was 2.3 times that of Ti -doped rutileTiO .

Keywords： Ti3+-doped TiO2     photocatalytic CO2 conversion     visible light irradiation    

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Synthesis, physicochemical characterizations and catalytic performance of Pd/carbon-zeolite and Pd/carbon-CeO

Zeinab JAMALZADEH, Mohammad HAGHIGHI, Nazli ASGARI

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3,   Pages 365-381 doi: 10.1007/s11783-013-0520-5

Abstract: In this work, xylene removal from waste gas streams was investigated via catalytic oxidation over Pd/carbon-zeolite and Pd/carbon-CeO nanocatalysts.

Keywords： Pd/carbon-CeO2     Pd/carbon-zeolite     pine cone     ZnCl2     catalytic oxidation     xylene    

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Effect of TiO 2 loading on the activity of V/TiO 2 -Al 2 O 3 in the catalytic oxidehydrogenation of ethylbenzene

Xiaohong LI, Wenying LI,

Frontiers of Chemical Science and Engineering 2010, Volume 4, Issue 2,   Pages 142-146 doi: 10.1007/s11705-009-0233-2

Abstract: TiO-AlOmixed oxides with different compositions ranging from 40wt-% to 95wt-% of TiO were prepared byTiO content in the support had obvious effect on the crystal structure, texture characteristic, acidThe highest catalytic activity was acquired when the TiO content was 50 wt-%.

Keywords： desorption     different     TiO-AlOmixed     physisorption     ethylbenzene    

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A comparison of the catalytic hydrogenation of 2-amylanthraquinone and 2-ethylanthraquinone over a Pd

Enxian Yuan, Xiangwei Ren, Li Wang, Wentao Zhao

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 2,   Pages 177-184 doi: 10.1007/s11705-016-1604-0

Abstract: The hydrogenation of 2-ethylanthraquinone (eAQ), 2- -amylanthraquinone (taAQ) and their mixtures withmolar ratios of 1:1 and 1:2 to the corresponding hydroquinones (eAQH and taAQH ) were studied overa Pd/Al O catalyst in a semi-batch slurry reactor at 60 °C and at 0.3 MPa.can be ascribed to the longer and branched side chain in taAQ, which limits its accessibility to the PdDensity functional theory calculations showed that it is more difficult for taAQ to adsorb onto a Pd

Keywords： hydrogenation     hydrogen peroxide     anthraquinone     Pd catalyst     AO process    

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Interfacial charge transfer and photocatalytic activity in a reverse designed BiO/TiO core-shell

Frontiers in Energy 2021, Volume 15, Issue 3,   Pages 732-743 doi: 10.1007/s11708-021-0772-x

Abstract: photocatalytic properties of core-shell heterojunctions photocatalysts with reversible configuration of TiO2 and Bi2O3 layers were studied.The results show the formation of homogenous TiO2 anatase and Bi2O3In optimal core-shell design, Bi2O3 collects holes from TiO2, leavingelectrons free to react and increase by 5 times the photocatalytic efficiency toward H2 generation

Keywords： photocatalysis     core-shell     heterojunction     H2     TiO2     Bi2O3   

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Engineering a Coordinatively Unsaturated Au–O–Ti3+ Structure Toward Unprecedented H2 Efficiency for Low-Temperature Propene Epoxidation with H2 and O2 Article

Zhaoning Song, Hao Yan, Juncong Yuan, Hongfei Ma, Jianlin Cao, Yongxiang Wang, Qiang Wang, Chong Peng, Feng Deng, Xiang Feng, De Chen, Chaohe Yang, Yongkang Hu

Engineering 2023, Volume 25, Issue 6,   Pages 144-156 doi: 10.1016/j.eng.2023.01.008

Abstract:

Since 1998, the Au–O–Ti4+ sites of Au/Ti-based catalysts have been widely acceptedas the active sites for propene epoxidation with H2 and O2 at a relatively hightemperature, although they are limited by poor H2 efficiency.It was found that the Ti–OOH generation rate is higher on Au–O–Ti3+ than>2O2 and the Ti–OOH intermediate, even at a low temperature.

Keywords： Propene epoxidation     H2 efficiency     Au/Ti bifunctional catalysts     Coordinatively unsaturatedTi     Density-functional theory    

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Solar photocatalytic decomposition of two azo dyes on multi-walled carbon nanotubes (MWCNTs)/TiO 2 composites

Huilong WANG, Shuqin LIU, Hui WANG, Wenfeng JIANG,

Frontiers of Environmental Science & Engineering 2010, Volume 4, Issue 3,   Pages 311-320 doi: 10.1007/s11783-010-0237-7

Abstract: Multi-walled carbon nanotubes (MWCNTs)/TiO composite photocatalysts with high photoactivity were preparedCompared to pure TiO, the combination of MWCNTs with titania could cause a significant absorption shiftThe photocatalytic performances of the MWCNTs/TiO composite catalysts were evaluated for the decompositionThe results showed that the addition of MWCNTs enhanced the adsorption and photocatalytic activity of TiO

Keywords： sol-gel     multi-walled carbon nanotubes (MWCNTs)/TiO2 composite     photocatalysis     azo dye     solar irradiation    

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Preparation and characterization of SO42-/TiO2 and S2O82-/TiO2 catalysts

MA Xuedan, GUO Daishi, JIANG Qizhong, MA Zifeng, MA Zhengfei, YE Weidong, LI Chunbo

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1,   Pages 45-49 doi: 10.1007/s11705-007-0009-5

Abstract: Nanosized solid superacids SO/TiO and SO/TiO, as well as MCM-41-supported SO/ZrO, were prepared.The results showed that SO/TiO and SO/TiO possess not only nanosized particles with diameters <7.0 nmDifferent from the Lewis acid nature of SO/ZrO/MCM-41, SO/TiO and SO/TiO exhibit mainly Br¢nsted aciditiesSO/TiO even stronger than those on SO/ZrO/MCM-41 were generated when persulfate solution was used asBecause of their distinct acid natures, SO/TiO and SO/TiO exhibited catalytic activities for the cyclization

Keywords： exhibit     Different     persulfate     adsorption-desorption     catalytic    

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Plasmonic Au nanoparticles supported on both sides of TiO2 hollow spheres for maximising photocatalytic

Jianwei Lu, Lan Lan, Xiaoteng Terence Liu, Na Wang, Xiaolei Fan

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 665-671 doi: 10.1007/s11705-019-1815-2

Abstract: A strategy of intensifying the visible light harvesting ability of anatase TiO hollow spheres (HSs)was developed, in which both sides of TiO HSs were utilised for stabilising Au nanoparticles (NPs) throughThe composite structure of single Au NP yolk-TiO shell-Au NPs, denoted as Au@Au(TiO , was rendered andAu@Au(TiO showed enhanced photocatalytic activity in the degradation of methylene blue and phenol inaqueous phase under visible light surpassing that of other reference materials such as Au(TiO by 77%

Keywords： TiO2 hollow spheres     plasmonic Au nanoparticles     confinement     visible light     photocatalytic degradation    

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Preparation of lignin/TiO2 nanocomposites and their application in aqueous polyurethane coatings

Dongjie Yang, Shengyu Wang, Ruisheng Zhong, Weifeng Liu, Xueqing Qiu

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 1,   Pages 59-69 doi: 10.1007/s11705-018-1712-0

Abstract: A simple method using a water soluble lignin quaternary ammonium salt (LQAS) and TiO has been developedfor the preparation of lignin/TiO nanocomposites in an aqueous medium under mild conditions.The LQAS/TiO nanocomposites contain well-dispersed small particles with excellent ultraviolet (UV) shieldingWhen the LQAS/TiO nanocomposites were blended with WPU, the UV absorbance and the tensile ductilityThe composite WPU hybrid film containing 6 wt-% LQAS/TiO nanocomposite had the highest visible light

Keywords： lignin     TiO2     nanocomposite particle     polyurethane film    

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All-inorganic TiO/CsAgBiBr composite as highly efficient photocatalyst under visible light irradiation

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 12,   Pages 1925-1936 doi: 10.1007/s11705-023-2344-6

Abstract: recent years, limited photocatalysis efficiency and wide band gap have hindered the application of TiOIn this work, this photocatalytic process was facilitated by a unique TiO2/Cs2AgBiBrTiO2/Cs2AgBiBr6 composite was investigated for its structure and photocatalyticThe results showed that when the perovskite dosage is 40%, the photocatalytic rate of TiO2ideas for improving TiO2’s photocatalytic performance.

Keywords： Cs2AgBiBr6 nanocrystals     visible-light photocatalyst     Cs2AgBiBr6/TiO2 heterojunction    

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Promoting effect of Zr on the catalytic combustion of methane over Pd/γ-Al

Hongbo NA,Tianle ZHU,Zhiming LIU,Yifei SUN

Frontiers of Environmental Science & Engineering 2014, Volume 8, Issue 5,   Pages 659-665 doi: 10.1007/s11783-013-0613-1

Abstract: The effect of Zr on the catalytic performance of Pd/γ-Al O for the methane combustion was investigatedThe results show that the addition of Zr can improve the activity and stability of Pd/γ-Al O catalystThe active phase of methane combustion over supported palladium catalyst is the Pd /Pd mixture.Zr addition inhibits Pd aggregation and enhances the redox properties of active phase Pd / Pd .(Pd / Pd ).

Keywords： Pd-Zr/Al2O3     methane     catalytic combustion     catalyst regeneration    

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Title Author Date Type Operation

Efficient dechlorination of 2,4-dichlorophenol in an aqueous media with a mild pH using a Pd/TiO

Jiangkun DU,Jianguo BAO,Wei HU

Journal Article

Effective regeneration of thermally deactivated commercial V-W-Ti catalysts

Xuesong SHANG, Jianrong LI, Xiaowei YU, Jinsheng CHEN, Chi HE

Journal Article

An electrochemical process that uses an Fe

Chaojie Jiang, Lifen Liu, John C. Crittenden

Journal Article

Facile synthesis and enhanced visible-light photocatalytic activity of Ti

Xiaojie Zhang,Lei Wang,Shuqing Chen,Yi Huang,Zhuonan Song,Miao Yu

Journal Article

Synthesis, physicochemical characterizations and catalytic performance of Pd/carbon-zeolite and Pd/carbon-CeO

Zeinab JAMALZADEH, Mohammad HAGHIGHI, Nazli ASGARI

Journal Article

Effect of TiO 2 loading on the activity of V/TiO 2 -Al 2 O 3 in the catalytic oxidehydrogenation of ethylbenzene

Xiaohong LI, Wenying LI,

Journal Article

A comparison of the catalytic hydrogenation of 2-amylanthraquinone and 2-ethylanthraquinone over a Pd

Enxian Yuan, Xiangwei Ren, Li Wang, Wentao Zhao

Journal Article

Interfacial charge transfer and photocatalytic activity in a reverse designed BiO/TiO core-shell

Journal Article

Engineering a Coordinatively Unsaturated Au–O–Ti3+ Structure Toward Unprecedented H2 Efficiency for Low-Temperature Propene Epoxidation with H2 and O2

Zhaoning Song, Hao Yan, Juncong Yuan, Hongfei Ma, Jianlin Cao, Yongxiang Wang, Qiang Wang, Chong Peng, Feng Deng, Xiang Feng, De Chen, Chaohe Yang, Yongkang Hu

Journal Article

Solar photocatalytic decomposition of two azo dyes on multi-walled carbon nanotubes (MWCNTs)/TiO 2 composites

Huilong WANG, Shuqin LIU, Hui WANG, Wenfeng JIANG,

Journal Article

Preparation and characterization of SO42-/TiO2 and S2O82-/TiO2 catalysts

MA Xuedan, GUO Daishi, JIANG Qizhong, MA Zifeng, MA Zhengfei, YE Weidong, LI Chunbo

Journal Article

Plasmonic Au nanoparticles supported on both sides of TiO2 hollow spheres for maximising photocatalytic

Jianwei Lu, Lan Lan, Xiaoteng Terence Liu, Na Wang, Xiaolei Fan

Journal Article

Preparation of lignin/TiO2 nanocomposites and their application in aqueous polyurethane coatings

Dongjie Yang, Shengyu Wang, Ruisheng Zhong, Weifeng Liu, Xueqing Qiu

Journal Article

All-inorganic TiO/CsAgBiBr composite as highly efficient photocatalyst under visible light irradiation

Journal Article

Promoting effect of Zr on the catalytic combustion of methane over Pd/γ-Al

Hongbo NA,Tianle ZHU,Zhiming LIU,Yifei SUN

Journal Article