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Signal promoting role of a p-type transition metal dichalcogenide used for the detection of ultra-trace

Abdolhamid Hatefi-Mehrjardi, Amirkhosro Beheshti-Marnani, Zarrin Es'haghi

Frontiers of Chemical Science and Engineering 2019, Volume 13, Issue 4,   Pages 823-831 doi: 10.1007/s11705-019-1797-0

Abstract: A -type transition metal dichalcogenide (WS ) was synthesized and hybridized with graphene oxide via

Keywords： labeled aptasensor     transition metal dichalcogenide     graphene oxide     sodium diclofenac    

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Structural engineering of transition metal-based nanostructured electrocatalysts for efficient water

Yueqing Wang, Jintao Zhang

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 4,   Pages 838-854 doi: 10.1007/s11705-018-1746-3

Abstract: Tremendous efforts have been devoted to exploring highly efficient and abundant metal oxide electrocatalystsIn this review, we summarize the recent advances on the development of metal oxide electrocatalysts withThe special strategies relay on the transformation from the metal organic framework and ion exchangereactions for the preparation of novel metal oxide nanostructures with boosting the catalytic activities

Keywords： water splitting     structure engineering     metal organic framework     ion exchange     synergistic effect     hybrid    

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Crystalline mesoporous transition metal oxides: hard-templating synthesis and application in environmental

Zhen MA, Bei ZHOU, Yu REN

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3,   Pages 341-355 doi: 10.1007/s11783-012-0472-1

Abstract: Although mesoporous metal oxides have lower surface areas compared to mesoporous silicas, they generallyMesoporous metal oxides can be synthesized via a soft-templating or hard-templating approach, and theseIn this review, we summarize the synthesis of mesoporous transition metal oxides using mesoporous silicas

Keywords： mesoporous materials     silica     metal oxide     hard-templating     environmental catalysis    

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Self-supported transition metal phosphide based electrodes as high-efficient water splitting cathodes

Yan Zhang, Jian Xiao, Qiying Lv, Shuai Wang

Frontiers of Chemical Science and Engineering 2018, Volume 12, Issue 3,   Pages 494-508 doi: 10.1007/s11705-018-1732-9

Abstract: Combining novel self-supporting structure and high-performance transition metal phosphides (TMP) showsare divided into three categories: catalysts growing on carbon-based substrates, catalysts growing on metal-based

Keywords： transition metal phosphide     self-supported electrode     electrocatalysis     hydrogen evolution reaction    

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Promotion of transition metal oxides on the NH

Weiman Li, Haidi Liu, Yunfa Chen

Frontiers of Environmental Science & Engineering 2017, Volume 11, Issue 2, doi: 10.1007/s11783-017-0914-x

Abstract: Manganese and chromium oxides promote the NH -SCR activity of Zr-Ce mixed oxide. Cr-Zr-Ce mixed oxide exhibited>80% NO conversion at a wide temperature window. More acid sites and higher reducibility may responsible for the high SCR ability. Chromium oxide and manganese oxide promoted ZrO -CeO catalysts were prepared by a homogeneous precipitation method for the selective catalytic reduction of NO with NH . A series of characterization including X-ray diffraction (XRD), high-resolution transmission electron microscope (HR-TEM), Brunauer–Emmett–Teller (BET) surface area analysis, H temperature-programmed reduction (H -TPR), and X-ray photoelectron spectroscopy (XPS) were used to evaluate the influence of the physicochemical properties on NH -SCR activity. Cr-Zr-Ce and Mn-Zr-Ce catalysts are much more active than ZrO -CeO binary oxide for the low temperature NH -SCR, mainly because of the high specific surface area, more surface oxygen species, improved reducibility derived from synergistic effect among different elements. Mn-Zr-Ce catalyst exhibited high tolerance to SO and H O. Cr-Zr-Ce mixed oxide exhibited>80% NO conversion at a wide temperature window of 100°C–300°C. DRIFT studies showed that the addition of Cr is beneficial to the formation of Bronsted acid sites and prevents the formation of stable nitrate species because of the presence of Cr . The present mixed oxide can be a candidate for the low temperature abatement of NO .

Keywords： NH3-selective catalytic reduction     NOx     Low temperature     Cr-Zr-Ce    

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Transition metal-doped heteropoly catalysts for the selective oxidation of methacrolein to methacrylic

Yanxia Zheng,Heng Zhang,Lei Wang,Suojiang Zhang,Shaojun Wang

Frontiers of Chemical Science and Engineering 2016, Volume 10, Issue 1,   Pages 139-146 doi: 10.1007/s11705-015-1548-9

Abstract: The effects of the transition metals on the structure and activity of the catalysts were investigatedFTIR spectra showed that the transition metal-doped catalysts maintained the Keggin structure of thetemperature-programmed desorption and H temperature-programmed reduction results showed that the transition

Keywords： heteropoly compounds     transition metals     selective oxidation     methacrolein    

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The capture of carbon dioxide by transition metal aluminates, calcium aluminate, calcium zirconate, calcium

Ganesh TILEKAR, Kiran SHINDE, Kishor KALE, Reshma RASKAR, Abaji GAIKWAD

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 4,   Pages 477-491 doi: 10.1007/s11705-011-1107-y

Abstract: The capture of CO by transition metal (Mn, Ni, Co and Zn) aluminates, calcium aluminate, calcium zirconateThe prepared metal adsorbents were characterized by X-ray diffraction (XRD), scanning electron microscopedifferent experimental variables affecting the adsorbents ability to capture CO , such as the mol ratio of metalHowever, the mixed metal oxides captured reasonable amount of CO at these higher temperatures.

Keywords： captured CO2     pre-combustion temperature     characterization     calcium silicate     calcium zirconate    

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Effects of two transition metal sulfate salts on secondary organic aerosol formation in toluene/NO

Biwu CHU, Jiming HAO, Junhua LI, Hideto TAKEKAWA, Kun WANG, Jingkun JIANG

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 1,   Pages 1-9 doi: 10.1007/s11783-012-0476-x

Abstract: Aerosol phase reactions play a very important role on secondary organic aerosol (SOA) formation, and metal-containingIn this study, we tested the effects of two transition metal sulfate salts, manganese sulfate (MnSO )By comparing photochemical reaction products of experiments with and without transition metal sulfateseed aerosols, we evaluated the effects of transition metal sulfate seed aerosols on toluene consumptionThese observations are consistent when varying metal sulfate aerosol concentrations.

Keywords： manganese sulfate     zinc sulfate     seed aerosols     toluene photooxidation     secondary organic aerosol    

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Transition metal doped mesoporous titania with a crystalline framework as catalysts for oxidation of

YANG Zehui, OU Encai, WANG Yunan, PENG Li, WANG Jiaqiang, YIN Lihui

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3,   Pages 296-300 doi: 10.1007/s11705-008-0044-x

Abstract: Transition metal M (M = Mn, Fe, Co, Ni, Cu, and Zn) doped mesoporous titania with a crystalline framework

Keywords： selectivity     conversion     -bromobenzaldehyde     aqueous hydrogen     oxidation    

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Removal of elemental mercury with Mn/Mo/Ru/Al

Yongfu GUO, Naiqiang YAN, Ping LIU, Shijian YANG, Juan WANG, Zan QU

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3,   Pages 464-473 doi: 10.1007/s11783-012-0430-y

Abstract: In this work, a catalytic membrane using Mn/Mo/Ru/Al O as the catalyst was employed to remove elemental mercury (Hg ) from flue gas at low temperature. Compared with traditional catalytic oxidation (TCO) mode, Mn/Al O membrane catalytic system had much higher removal efficiency of Hg . After the incorporation of Mo and Ru, the production of Cl from the Deacon reaction and the retainability for oxidants over Mn/Al O membrane were greatly enhanced. As a result, the oxidization of Hg over Mn/Al O membrane was obviously promoted due to incorporation of Mo and Ru. In the presence of 8 ppmv HCl, the removal efficiency of Hg by Mn/Mo/Ru/Al O membrane reached 95% at 423 K. The influence of NO and SO on Hg removal were insignificant even if 200 ppmv NO and 1000 ppmv SO were used. Moreover, compared with the TCO mode, the Mn/Mo/Ru/Al O membrane catalytic system could remarkably reduce the demanded amount of oxidants for Hg removal. Therefore, the Mn/Mo/Ru/Al O membrane catalytic system may be a promising technology for the control of Hg emission.

Keywords： flue gas     elemental mercury     membrane     catalysis     transition metal    

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Epithelial-to-mesenchymal transition in cancer: complexity and opportunities

Yun Zhang, Robert A. Weinberg

Frontiers of Medicine 2018, Volume 12, Issue 4,   Pages 361-373 doi: 10.1007/s11684-018-0656-6

Abstract:

The cell-biological program termed the epithelial-to-mesenchymal transition (EMT) plays an important

Keywords： epithelial-to-mesenchymal transition     cancer     metastasis     cancer stem cell    

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Polymerization of methyl methacrylate catalyzed by mono-/bis-salicylaldiminato nickel(II) complexes and methylaluminoxane

Jihong LU, Danfeng ZHANG, Qian CHEN, Buwei YU

Frontiers of Chemical Science and Engineering 2011, Volume 5, Issue 1,   Pages 19-25 doi: 10.1007/s11705-010-0546-1

Abstract: Two types of salicylaldiminato-based nickel complexes, mono-ligated Ni(II) complexes ([O-C H - - C(H)=N-Ar]Ni(PPh )(Ph) ( ), [O-(3,5-Br )C H - -C(H)=N-Ar]Ni(PPh )(Ph) ( ), [O-(3- -Bu)C H - -C(H)=N-Ar]Ni(PPh )(Ph) ( )) and bis-ligated Ni(II) complexes ([O-(3,5-Br )C H - -C(H)=N-Ar] Ni ( ), [O-(3,5-Br )C H - -C(H)=N-2-C H (PhO)] Ni ( ), Ar=2,6-C H ( -Pr) ) were synthesized and characterized by Fourier transform infrared spectroscopy (FT-IR), nuclear magnetic resonance (NMR), mass spectrography (MS) and elemental analysis (EA). In the presence of methylaluminoxane (MAO) as cocatalyst, all the nickel complexes exhibited high activities for the polymerization of methyl methacrylate (MMA) and syndiotactic-rich poly(methyl methacrylate) (PMMA) was obtained. The complexes with less bulky substituents on salicylaldiminato framework possessed higher activities, while with the same salicylaldiminato, the mono-ligated nickel complexes showed higher catalytic activity than bis-ligated ones.

Keywords： late transition metal catalyst     methyl methacrylate     polymerization     salicylaldiminato nickel complexes    

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Phase transition regulation and caloric effect

Frontiers in Energy 2023, Volume 17, Issue 4,   Pages 463-477 doi: 10.1007/s11708-023-0860-1

Abstract: worsening the performance in other aspects, like attaining a large caloric effect with narrowing the transitionperformance of materials, consisting of enlarging caloric effects, reducing hysteresis losses, adjusting transitiontemperatures, and widening transition temperature spans, which indicate that further progress can be

Keywords： phase transition regulation     caloric effect     solid state refrigeration    

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Tuning the electronic structure of NiCoP arrays through V doping for pH-universal hydrogen evolution reaction electrocatalyst

Yu Lin, Jinlei Wang, Duanlin Cao, Yaqiong Gong

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 5,   Pages 1134-1146 doi: 10.1007/s11705-020-2014-x

Abstract: cation-doping strategy provides a new inspiration to rationally enhance or design new-type nonprecious metal-based

Keywords： hydrogen evolution reaction     transition metal phosphides     pH-universal     vanadium doping     carbon fiber paper    

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Energy transition management towards a low-carbon world

Frontiers of Engineering Management 2022, Volume 9, Issue 3,   Pages 499-503 doi: 10.1007/s42524-022-0201-9

Keywords： energy transition     low-carbon technology     system modeling     transition path     emission reduction    

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Title Author Date Type Operation

Signal promoting role of a p-type transition metal dichalcogenide used for the detection of ultra-trace

Abdolhamid Hatefi-Mehrjardi, Amirkhosro Beheshti-Marnani, Zarrin Es'haghi

Journal Article

Structural engineering of transition metal-based nanostructured electrocatalysts for efficient water

Yueqing Wang, Jintao Zhang

Journal Article

Crystalline mesoporous transition metal oxides: hard-templating synthesis and application in environmental

Zhen MA, Bei ZHOU, Yu REN

Journal Article

Self-supported transition metal phosphide based electrodes as high-efficient water splitting cathodes

Yan Zhang, Jian Xiao, Qiying Lv, Shuai Wang

Journal Article

Promotion of transition metal oxides on the NH

Weiman Li, Haidi Liu, Yunfa Chen

Journal Article

Transition metal-doped heteropoly catalysts for the selective oxidation of methacrolein to methacrylic

Yanxia Zheng,Heng Zhang,Lei Wang,Suojiang Zhang,Shaojun Wang

Journal Article

The capture of carbon dioxide by transition metal aluminates, calcium aluminate, calcium zirconate, calcium

Ganesh TILEKAR, Kiran SHINDE, Kishor KALE, Reshma RASKAR, Abaji GAIKWAD

Journal Article

Effects of two transition metal sulfate salts on secondary organic aerosol formation in toluene/NO

Biwu CHU, Jiming HAO, Junhua LI, Hideto TAKEKAWA, Kun WANG, Jingkun JIANG

Journal Article

Transition metal doped mesoporous titania with a crystalline framework as catalysts for oxidation of

YANG Zehui, OU Encai, WANG Yunan, PENG Li, WANG Jiaqiang, YIN Lihui

Journal Article

Removal of elemental mercury with Mn/Mo/Ru/Al

Yongfu GUO, Naiqiang YAN, Ping LIU, Shijian YANG, Juan WANG, Zan QU

Journal Article

Epithelial-to-mesenchymal transition in cancer: complexity and opportunities

Yun Zhang, Robert A. Weinberg

Journal Article

Polymerization of methyl methacrylate catalyzed by mono-/bis-salicylaldiminato nickel(II) complexes and methylaluminoxane

Jihong LU, Danfeng ZHANG, Qian CHEN, Buwei YU

Journal Article

Phase transition regulation and caloric effect

Journal Article

Tuning the electronic structure of NiCoP arrays through V doping for pH-universal hydrogen evolution reaction electrocatalyst

Yu Lin, Jinlei Wang, Duanlin Cao, Yaqiong Gong

Journal Article

Energy transition management towards a low-carbon world

Journal Article