Abstract:Oxygen evolution reaction (OER) is closely related to numerous energy-related applications so that developing high-activity, durable and cost-effective electrocatalysts for OER has been an inevitable trend. Prussian blue analogues (PBAs), a kind of metal organic frameworks (MOFs), which have been paid more attention in the filed of electrocatalysis because of unique framework structure and adjustable components. Herein, we synthesis a series of Ni-Co PBAs via modulating metal ratio by a coprecipitation method and then anneal the as-prepared Ni-Co PBAs, which used as OER catalysts. We found that as the increasing of nickel content, the size of catalysts decreases, which resulting in an increasing of specific surface area and electrochemical active sites, thereby improving the performance of OER. Furthermore, benefiting from the minimum size with largest specific area, largest electrochemical active surface area with different and abundant active sites, the Ni-Co-31 oxides shows a small overpotential of 340 mV at a current density of 10 mAocm-2, a small Tafel slope of 89 mVodec-1, which is superior to other catalysts prepared. This work proves the great significance of PBAs derivatives with different metal ratios for OER performance, which is meaningful for the preparation and mass production of efficient electrocatalysts.

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	1. Modulating Prussian Blue Analogues-derived Binary Metal Oxides for Efficient Oxygen Evolution Catalysts
	XIAO Shenghuan,YANG Yang,ZHANG Yunhuai
	Chemistry 18 May 2020
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	Abstract:Oxygen evolution reaction (OER) is closely related to numerous energy-related applications so that developing high-activity, durable and cost-effective electrocatalysts for OER has been an inevitable trend. Prussian blue analogues (PBAs), a kind of metal organic frameworks (MOFs), which have been paid more attention in the filed of electrocatalysis because of unique framework structure and adjustable components. Herein, we synthesis a series of Ni-Co PBAs via modulating metal ratio by a coprecipitation method and then anneal the as-prepared Ni-Co PBAs, which used as OER catalysts. We found that as the increasing of nickel content, the size of catalysts decreases, which resulting in an increasing of specific surface area and electrochemical active sites, thereby improving the performance of OER. Furthermore, benefiting from the minimum size with largest specific area, largest electrochemical active surface area with different and abundant active sites, the Ni-Co-31 oxides shows a small overpotential of 340 mV at a current density of 10 mAocm-2, a small Tafel slope of 89 mVodec-1, which is superior to other catalysts prepared. This work proves the great significance of PBAs derivatives with different metal ratios for OER performance, which is meaningful for the preparation and mass production of efficient electrocatalysts.
	TO cite this article:XIAO Shenghuan,YANG Yang,ZHANG Yunhuai. Modulating Prussian Blue Analogues-derived Binary Metal Oxides for Efficient Oxygen Evolution Catalysts[OL].[18 May 2020] http://en.paper.edu.cn/en_releasepaper/content/4752128


	2. Aptamer-conjugated Nanomaterials for Biological Targets Detection
	ZHANG Ge,PENG Cheng,HU Xiaoxiao
	Chemistry 28 May 2018
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	Abstract:Aptamers offer unique advantages in terms of wide range of targets, high affinity and specificity, and have been widely used in many fields such as basic research, disease diagnosis, and drug development. Nanomaterials, due to their nanoscale sizes, shapes and structures, exhibit a variety of features such as large specific surface area and new properties of optical, magnetic, thermal and electrical performance. Hence, aptamer-conjugated nanomaterials composed of aptamers and nanomaterials combine both benefits, enabling high-specificity detection of biological targets in complex environments. This review summarizes the characteristics of various highly efficient aptamer-conjugated nanomaterials detection platforms and their advantages in detection of biotargets in recent years, and demonstrates their potential for biological detection and disease diagnosis.
	TO cite this article:ZHANG Ge,PENG Cheng,HU Xiaoxiao. Aptamer-conjugated Nanomaterials for Biological Targets Detection[OL].[28 May 2018] http://en.paper.edu.cn/en_releasepaper/content/4745273

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	3. Optimization on production technology of nano silica
	YIN Xiangbin,OU Encai,XU Weijian
	Chemistry 24 May 2017
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	Abstract:In this paper, chemical precipitation was used to produce nano silica in the presence of polyvinylpyrrolidone (PVP) and cetyltrimethyl ammonium bromide (CTAB) as composite dispersant. The structure and property of samples were characterized by IR, XRD, SEM and BET. The results indicates that the product with small particle size ,large specific surface area and high oil adsorption value can be prepared under these conditions: concentration of acidic water glass: 7.5 Be′; temperature: 60-70 °C; pH value: 8; the amount of dispersant: 1.6% 5 Be′ water glass..
	TO cite this article:YIN Xiangbin,OU Encai,XU Weijian. Optimization on production technology of nano silica[OL].[24 May 2017] http://en.paper.edu.cn/en_releasepaper/content/4735955


	4. Theoretical Investigations of 4-dimethylaminobenzonitrile (DMABN): Dual fluorescence and Resonance Raman spectras
	LIU Li-Qian, LIANG Wan-Zhen
	Chemistry 24 May 2016
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	Abstract: 4-dimethylaminobenzonitrile (DMABN) has been intensively studied due to its solvent-dependent dual fluorescence and nonlinear optical properties. This work presents a systematically theoretical investigations on the electronic structure property, dual fluorescence mechanism and NRS and RRS spectra in gas phase and methanol solvent. The density functional theory or time-dependent DFT (TDDFT) coupled with polarizable continuum model (PCM) is adopted to describe the molecule in methanol solution. It is concluded that the solvent and hydrogen bond effects reduce the energy gap of locally excited (LE) and charge transfer (CT) states; The fluorescence mechanism of DMABN in gas phase and methanol solvent is different in gas phase, the single normal fluorescence is chiefly emitted from the LE state through the internal conversion from CT to LE state. In methanol solvent, the normal fluorescence may be emitted from the LE state and the redshifted fluorescence comes from the CT state. It is confirmed that the intramolecular charge transfer (ICT) reaction from the LE state to CT state leads to the dual fluorescence in polar solvent. To further validate our conclusion, NRS and RRS calculated with the vertical gradient (VG) approximation which nicely yields the positions and relative magnitude order of band intensities compared with the experiment. With the inclusion of the strong vibration coupling of the LE and CT states, and the Herzberg-Teller (HT) vibronic coupling effect, the calculated spectra agree well with the experimental spectra..
	TO cite this article:LIU Li-Qian, LIANG Wan-Zhen. Theoretical Investigations of 4-dimethylaminobenzonitrile (DMABN): Dual fluorescence and Resonance Raman spectras[OL].[24 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4694655


	5. Synthesis and Ferroelectric Properties of a Couple of Chiral Europium(III) Complexes
	ZHANG Xiaopeng,LIU Jian,LI Chenghui,YOU Xiaozeng
	Chemistry 22 May 2016
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	Abstract:Molecular-based ferroelectric materials have received considerable interest due to their larger spontaneous polarization and convenient structural modification. In this work, a couple of pinene-containing europium(III) complexes, Eu(TTA)3L1a (1a) and Eu(TTA)3L1b (1b) (TTA = thenoyltrifluoroacetonate, L1a = (+)-4,5-bis(pinene)-2,2'-bipyridine, (-)-4,5-bis(pinene)-2,2'-bipyridine), were prepared and characterized. The chiral characterization was confirmed by single crystal X-ray diffraction and distinct electronic circular dichroism (CD) signals. Complex 1a crystallizes in the polar space group P1, and a strongly distorted square-antiprism environment around the EuIII ion is exhibited. Due to the non-centrosymmetric structure, distinct ferroelectric behavior of complex 1a was observed as expected.
	TO cite this article:ZHANG Xiaopeng,LIU Jian,LI Chenghui, et al. Synthesis and Ferroelectric Properties of a Couple of Chiral Europium(III) Complexes[OL].[22 May 2016] http://en.paper.edu.cn/en_releasepaper/content/4691661


	6. Preparation of Iodo-Bodipy dimer as triplet photosensitizers and Application in Photooxidation and Triplet-Triplet Annihilation (TTA) Upconversion
	CUI Xiaoneng,ZHAO Jianzhang
	Chemistry 04 August 2015
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	Abstract:Iodo-boron dipyrromethene (Bis-bodipy) dimer (B-4I) was prepared as organic triplet photosensitizer for triplet-triplet annihilation (TTA) upconversion and photooxidation. We introduces four iodine atoms to the Bodipy chromophore, therefore the intersyster crossing (ISC) was improved compared to the single iodo-boron dipyrromethene. The organic photosensitizers show strong UV-vis absorptions at 490-590 nm. Long-lived triplet excited state (triplet lifetime up to 72.2 μs) is populated upon excitation of the photosensitizers, proved by nanosecond time-resolved transient absorption spectroscopy. The triplet state was located in the Bodipy part for B-4I by DFT caculations of spin density surface analysis. The singlet oxygen quantum yield is up to 90%, which is higher than traditional photosensitizers, such as tetraphenylporphyrin (TPP), Rose Bangel (RB) and Methylene Blue (MB). In the photooxidation reactions of 1,5-dihydroxy naphthalene, the product Juglone was obtained with high yield. The TTA upconversion was also studied with B-4I as the triplet photosensitizer and with perylene as triplet acceptor, the upconversion quantum yield is up to 5.76%.
	TO cite this article:CUI Xiaoneng,ZHAO Jianzhang. Preparation of Iodo-Bodipy dimer as triplet photosensitizers and Application in Photooxidation and Triplet-Triplet Annihilation (TTA) Upconversion[OL].[ 4 August 2015] http://en.paper.edu.cn/en_releasepaper/content/4651799


	7. Highly Sensitive and Synergistic Detection of Guanine and Adenine Based on Poly(xanthurenic acid)-Reduced Graphene Oxide Interface
	YANG Tao,KONG Qianqian,LI Qianhe,WANG Xinxing,CHEN Lihua,JIAO Kui
	Chemistry 17 September 2014
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	Abstract:In order to achieve the large direct electrochemical signals of guanine and adenine, an urgent request for exploring novel electrode materials and interfaces has been put forward. In this paper, poly(xanthurenic acid, Xa)-reduced graphene oxide (PXa-ERGNO) interface, which own rich negative charged active sites and accelerated electron transfer ability, was fabricated for monitoring the positively charged guanine and adenine. Scanning electron microscopy, Fourier Transform infrared spectroscopy, Raman spectra, X-ray photoelectron spectroscopy, cyclic voltammetry, electrochemical impedance spectroscopy and differential pulse voltammetry were adopted to characterize the morphology and prove electrochemical properties of the prepared interface, respectively. The PXa-ERGNO interface with rich negative charge and large electrode surface area was an excellent sensing platform to prompt the adsorption of the positively charged guanine and adenine via strong π-π* interaction or electrostatic adsorption. The PXa-ERGNO interface exhibited prominent synergistic effect and good electrocatalytic activity to sensitive determination of guanine and adenine compared with sole PXa or ERGNO modified electrode. Our built sensing platform could be further applied in the adsorption and detection of other positively charged biomolecules or aromatic molecules.
	TO cite this article:YANG Tao,KONG Qianqian,LI Qianhe, et al. Highly Sensitive and Synergistic Detection of Guanine and Adenine Based on Poly(xanthurenic acid)-Reduced Graphene Oxide Interface[OL].[17 September 2014] http://en.paper.edu.cn/en_releasepaper/content/4610326


	8. Brønsted Acid Catalyzed Benzylic C–H Bond Functionalization of Azaarenes: Nucleophilic Addition to Nitroso Compounds
	Gao Xu,Yang Luo
	Chemistry 23 June 2014
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	Abstract:A practical Brønsted acid promoted benzylic C–H functionalization of 2-alkylazaarenes and nucleophilic addition to nitroso compounds was developed under mild conditions. Switched by Brønsted acids, this method can afford azaarene-2-aldimines, azaarene-2-carbaldehyde or azaarene-2-oximes selectively. No metal, base, oxidant or other additives were required.
	TO cite this article:Gao Xu,Yang Luo. Brønsted Acid Catalyzed Benzylic C–H Bond Functionalization of Azaarenes: Nucleophilic Addition to Nitroso Compounds[OL].[23 June 2014] http://en.paper.edu.cn/en_releasepaper/content/4602208


	9. Base and alkane adsorption on HZSM-5 with different Si/Al ratios
	XIA Yifen,XUE Nianhua
	Chemistry 28 February 2014
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	Abstract:Adsorbed ammonia and correspongding temperature-grammed desorption proved that the similar acidity in HZSM-5 zeolites with different Si/Al ratios, as well as revealed by the IR spectra of adsorbed pyridine in these zeolites. Howevwer, the adsorbed propane shows different interaction with the zeolites from the different density of the acid sites. It revealed that stronger interaction between the alkane interaction and zeolites when more acid sites presented in zeolites. The Nuclear Magnetic Resonance (NMR) spectra of the 1H DQ of zeolites and the 13C of adsorbed propane proved that the adjacency between Bronsted acid sites and the co-interaction of the active sites on one propane molecules.
	TO cite this article:XIA Yifen,XUE Nianhua. Base and alkane adsorption on HZSM-5 with different Si/Al ratios[OL].[28 February 2014] http://en.paper.edu.cn/en_releasepaper/content/4588077


	10. Binuclear Cyclopentadienylrhenium Hydride Chemistry: Terminal versus Bridging Hydride and Cyclopentadienyl Ligands
	Gao Xiaozhen,LI Nan
	Chemistry 31 December 2013
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	Abstract:Theoretical studies predict the lowest energy structures of the binuclear cyclopentadienylrhenium hydrides Cp2Re2Hn (Cp = 5-cyclopentadienyl ligand; n = 4, 6, 8) to have a central doubly bridged Re2(μ-H)2 unit with terminal ?5-Cp rings and the remaining hydrides as terminal ligands. However, the lowest energy Cp2Re2H2 structure by more [less] than 12 kcal/mol has one terminal ?5-Cp ring, a bridging ?3 ,?2-Cp ring, and two terminal hydride ligands bonded to the same Re atom. The lowest energy hydride-free Cp2Re2 structure is a perpendicular structure with two bridging ?3,?2-Cp rings. The previously predicted bent singlet Cp2Re2 structure with terminal ?5-Cp rings and a formal Re-Re sextuple bond lies ~37 kcal/mol above this lowest energy (?3,?2-Cp)2Re2 structure. The thermochemistry of the CpReHn and Cp2Re2Hn systems is consistent with the reported synthesis of the permethylated derivatives CpReH6 and Cp2Re2H6 (Cp* = ?5-Me5C5) as very stable compounds.
	TO cite this article:Gao Xiaozhen,LI Nan. Binuclear Cyclopentadienylrhenium Hydride Chemistry: Terminal versus Bridging Hydride and Cyclopentadienyl Ligands[OL].[31 December 2013] http://en.paper.edu.cn/en_releasepaper/content/4578894

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