Search results for: Hongwen Liu

Items from 1 to 20 out of 35 results

article

A Gas‐Steamed MOF Route to P‐Doped Open Carbon Cages with Enhanced Zn‐Ion Energy Storage Capability and Ultrastability

Chun‐Chao Hou, Yu Wang, Lianli Zou, Miao Wang, more

Advanced Materials > 33 > 31 > n/a - n/a

Carbon micro/nanocages have received great attention, especially in electrochemical energy‐storage systems. Herein, as a proof‐of‐concept, a solid‐state gas‐steamed metal–organic‐framework approach is designed to fabricate carbon cages with controlled openings on walls, and N, P dopants. Taking advantage of the fabricated carbon cages with large openings on their walls for enhanced kinetics of mass...

article

A Zinc–Dual‐Halogen Battery with a Molten Hydrate Electrolyte

Hongwen Liu, Chih‐Yao Chen, Hao Yang, Yu Wang, more

Advanced Materials > 32 > 46 > n/a - n/a

Halogen redox couples offer several advantages for energy storage such as low cost, high solubility in water, and high redox potential. However, the operational complexity of storing halogens at the oxidation state via liquid‐phase media hampers their widespread application in energy‐storage devices. Herein, an aqueous zinc–dual‐halogen battery system taking the advantages of redox flow batteries...

article

Frontispiece: Fabricating Dual‐Atom Iron Catalysts for Efficient Oxygen Evolution Reaction: A Heteroatom Modulator Approach

Yong‐Sheng Wei, Liming Sun, Miao Wang, Jinhua Hong, more

Angewandte Chemie International Edition > 59 > 37 > n/a - n/a

Nanocatalysis In their Research Article on page 16013, Q. Xu et al. describe the preparation of a dual‐atom iron catalyst for the oxygen evolution reaction. Aggregation of the iron atoms into clusters is inhibited by a heteroatom modulator approach.

article

Fabricating Dual‐Atom Iron Catalysts for Efficient Oxygen Evolution Reaction: A Heteroatom Modulator Approach

Yong‐Sheng Wei, Liming Sun, Miao Wang, Jinhua Hong, more

Angewandte Chemie International Edition > 59 > 37 > 16013 - 16022

Understanding the thermal aggregation behavior of metal atoms is important for the synthesis of supported metal clusters. Here, derived from a metal–organic framework encapsulating a trinuclear Fe^III₂Fe^II complex (denoted as Fe₃) within the channels, a well‐defined nitrogen‐doped carbon layer is fabricated as an ideal support for stabilizing the generated iron nanoclusters. Atomic replacement of Fe...

article

Fabricating Dual‐Atom Iron Catalysts for Efficient Oxygen Evolution Reaction: A Heteroatom Modulator Approach

Yong‐Sheng Wei, Liming Sun, Miao Wang, Jinhua Hong, more

Angewandte Chemie > 132 > 37 > 16147 - 16156

article

Frontispiz: Fabricating Dual‐Atom Iron Catalysts for Efficient Oxygen Evolution Reaction: A Heteroatom Modulator Approach

Yong‐Sheng Wei, Liming Sun, Miao Wang, Jinhua Hong, more

Angewandte Chemie > 132 > 37 > n/a - n/a

Nanokatalyse In ihrem Forschungsartikel of S. 16147 beschreiben Q. Xu et al. die Herstellung eines zweiatomigen Eisenkatalysators für die Sauerstoffevolution. Die Aggregation der Eisenatome zu Clustern wird durch Heteroatomaustausch verhindert.

article

Naked‐Eye Readout of Analyte‐Induced NIR Fluorescence Responses by an Initiation–Input–Transduction Nanoplatform

Dailiang Zhang, Linlin Wang, Xi Yuan, Yijun Gong, more

Angewandte Chemie > 132 > 2 > 705 - 709

Fluorescence visualization (FV) in the near‐infrared (NIR) window promises to break through the signal‐to‐background ratio (SBR) bottleneck of traditional visible‐light‐driven FV methods. However, straightforward NIR‐FV has not been realized, owing to the lack of methods to readily transduce NIR responses into instrument‐free, naked eye‐recognizable outputs. Now, an initiation–input–transduction platform...

article

Naked‐Eye Readout of Analyte‐Induced NIR Fluorescence Responses by an Initiation–Input–Transduction Nanoplatform

Dailiang Zhang, Linlin Wang, Xi Yuan, Yijun Gong, more

Angewandte Chemie International Edition > 59 > 2 > 695 - 699

article

Amplified colorimetric sensor for detecting radon by its daughter lead based on the free-fixed auto-assembly structure of Duplex-hemin/G-quadruplex

Guiying Yang, Chunli Song, Qiwei Shi, Hongwen Liu, more

Journal of Pharmaceutical and Biomedical Analysis > 2018 > 159 > C > 459-465

A novel signal amplification strategy based on a Pb²⁺-dependent DNAzyme is proposed for detecting Pb²⁺ and radon through Pb²⁺-induced DNAzyme cleavage and the auto-assembly of a duplex-hemin/G-quadruplex with two loop-stem structures and enzyme-mimicking catalytic activity. First, the Pb²⁺-specific DNAzyme cleaves a primer sequence, which induces assembly of the hairpin probe Hp1/Hp2 into a double...

article

Novel and label-free colorimetric detection of radon using AuNPs and lead(II)-induced GR5 DNAzyme-based amplification strategy

Hongwen Liu, Yating Chen, Chunli Song, Gang Tian, more

Analytical and Bioanalytical Chemistry > 2018 > 410 > 17 > 4227-4234

Radioactive radon decays into a stable daughter product, ²¹⁰Pb, which was used as the detection target to determine the radon radiation dose in a new technique. Pb²⁺ triggers DNAzyme to cleave a molecular beacon (MB), resulting in the stem–loop structure opening and forming two single DNA strands (ssDNA). The ssDNA binds to unmodified gold nanoparticles and effectively prevents their aggregation in...

chapter

An Improved Membrane Algorithm for Solving Time-Frequency Atom Decomposition

Chunxiu Liu, Gexiang Zhang, Hongwen Liu, Marian Gheorghe, more

Lecture Notes in Computer Science > Membrane Computing > Regular Presentations > 371-384

To decrease the computational complexity and improve the search capability of quantum-inspired evolutionary algorithm based on P systems (QEPS), a real-observation QEPS (RQEPS) was proposed. RQEPS is a hybrid algorithm combining the framework and evolution rules of P systems with active membranes and real-observation quantum-inspired evolutionary algorithm (QEA). The RQEPS involves a dynamic structure...

article

A novel detection of radon based on its decay product inducing conformational changes of an aptamer probe

Minzhi Long, Han Deng, Gang Tian, Chunli Song, more

Analytica Chimica Acta > 2016 > 936 > C > 202-207

This study proposes a novel method for the detection of inert gas radon using a label-free, specific, fluorescence-sensing aptamer in the context of PW17-OG system. This method utilizes the cyanine dye OliGreen (OG) as a signal reactor and the aptamer PW17 as a fluorescent identification probe. When OG integrates into the free curling PW17, a strong fluorescence signal is generated. After radon decays,...

chapter

Research on the measurement methods of half-voltage in LiNbO₃ crystal electro-optic modulation

Hongwen Liu, Yanxiao He, Rui Han, Shangpeng Sun, more

2016 IEEE International Conference on High Voltage Engineering and Application (ICHVE) > 1 - 5

2016 IEEE International Conference on High Voltage Engineering and Application (ICHVE)

In the optical voltage sensor based on first order electro-optic effects, the half-voltage of electro-optic crystal is one of the key factors influencing the input-output characteristic of sensors. With relative analysis of the electro-optic modulation mechanism, LiNbO₃ crystal is chosen to set up the measurement system of half-voltage, measurement is done on half-voltage. Theoretical calculation...

chapter

Research and application of a non-contact optical voltage sensor for the monitoring of lightning and switching overvoltage in EHV power grid

Hongwen Liu, Ke Wang, Rui Han, Qing Yang, more

2016 33rd International Conference on Lightning Protection (ICLP) > 1 - 4

2016 33rd International Conference on Lightning Protection (ICLP)

In this paper, a type of sensor for the non-contact monitoring of lightning and switching overvoltage in power grid is presented. It is designed based on Pockels effect and stray-capacity coupling theory. Double-crystal structure is utilized to restrain the unwanted influence caused by natural birefringence. The transmission of the data is achieved by optical fibers which are immune to the electromagnetic...

article

A naphthalene-based two-photon fluorescent probe for selective and sensitive detection of thiophenols

Qiujuan Ma, Junhong Xu, Xiaobing Zhang, Liyi Zhou, more

Sensors and Actuators B: Chemical > 2016 > 229 > C > 434-440

A naphthalene-based two-photon fluorescent probe for thiophenols has been reported in this work. The probe can be applied to the quantification of thiophenols with a linear range covering from 2.0×10⁻⁸ to 7.0×10⁻⁶molL⁻¹. It exhibited a high selectivity and excellent sensitivity with a detection limit of 9.6nM. Moreover, it was successfully used for practical detection of thiophenol in water samples...

article

Effect of thinning on partitioned soil respiration in a young Pinus tabulaeformis plantation during growing season

Xiaoqin Cheng, Fengfeng Kang, Hairong Han, Hongwen Liu, more

Agricultural and Forest Meteorology > 2015 > 214-215 > C > 473-482

Understanding soil respiration (R_s) response to thinning is an important component of our understanding of belowground carbon (C) dynamics and evaluating effects of forest management on C cycling. Therefore, we partitioned R_s into heterotrophic respiration (R_h) and autotrophic respiration (R_a) using trenched plots in a 20 year-old Pinus tabulaeformis plantation, subjected to varying thinning intensities,...

article

Synthesis of three-dimensional nanoporous graphene for use as surface-enhanced Raman scattering substrate

Zhiqiang Tu, Shangfei Wu, Fan Yang, Yongfeng Li, more

Materials Letters > 2015 > 152 > C > 264-267

We synthesized 3D nanoporous graphene by a chemical vapour deposition method with nanoporous copper as a catalytic substrate, and we show that the resulting nanoporous graphene has the same average pore size and the same morphology as the underlying copper substrate. Our surface-enhanced Raman scattering (SERS) investigation indicates that the nanoporosity of graphene significantly improves the SERS...

article

Heteroatom-doped graphene-like carbon films prepared by chemical vapour deposition for bifacial dye-sensitized solar cells

Xiuwen Xu, Wang Yang, Yongfeng Li, Zhiqiang Tu, more

Chemical Engineering Journal > 2015 > 267 > Complete > 289-296

Bifacial dye-sensitized solar cells (DSSCs) with the ability to utilize incidental light from both front- and rear-sides have drawn massive attention from researchers in recent years. Herein, nitrogen (N)-doped, sulphur (S)-doped and nitrogen/sulphur dual-doped transparent graphene-like carbon films (GFs) were synthesized by chemical vapour deposition (CVD) and confirmed by transmission electron microscopy...

article

Controllable growth of 1–7 layers of graphene by chemical vapour deposition

Zhiqiang Tu, Zhuchen Liu, Yongfeng Li, Fan Yang, more

Carbon > 2014 > 73 > Complete > 252-258

We report that graphene films with thickness ranging from 1 to 7 layers can be controllably synthesized on the surface of polycrystalline copper by a chemical vapour deposition method. The number of layers of graphene is controlled precisely by regulating the flow ratio of CH ₄ and H ₂ , the reaction pressure, the temperature and the reaction time. The synthesized graphene films were...

chapter

Renewable culture of microalgae Isochrysis Galbana

Wantao Fu, Tianwei Feng, Yuan Liu, Shuqing Cao, more

2013 International Conference on Materials for Renewable Energy and Environment > 1 > 322 - 326

2013 International Conference on Materials for Renewable Energy and Environment (ICMREE)

This aim of this paper is to research on culturing marine algae with high efficiency. Using microalgae Isochrysis Galbana as a model organism, a rapid growth regularity of microalgae in 4.5-L bioreactor was discovered under optimized culture condition, namely, specific growth rates of microalgae from the fourth day to the seventh day at maximum phase (631∼905×10⁴ cells·mL⁻¹·day⁻¹). Accordingly, a...

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INFONA - science communication portal

Search results for: Hongwen Liu

A Gas‐Steamed MOF Route to P‐Doped Open Carbon Cages with Enhanced Zn‐Ion Energy Storage Capability and Ultrastability

A Zinc–Dual‐Halogen Battery with a Molten Hydrate Electrolyte

Frontispiece: Fabricating Dual‐Atom Iron Catalysts for Efficient Oxygen Evolution Reaction: A Heteroatom Modulator Approach

Fabricating Dual‐Atom Iron Catalysts for Efficient Oxygen Evolution Reaction: A Heteroatom Modulator Approach

Fabricating Dual‐Atom Iron Catalysts for Efficient Oxygen Evolution Reaction: A Heteroatom Modulator Approach

Frontispiz: Fabricating Dual‐Atom Iron Catalysts for Efficient Oxygen Evolution Reaction: A Heteroatom Modulator Approach

Naked‐Eye Readout of Analyte‐Induced NIR Fluorescence Responses by an Initiation–Input–Transduction Nanoplatform

Naked‐Eye Readout of Analyte‐Induced NIR Fluorescence Responses by an Initiation–Input–Transduction Nanoplatform

Amplified colorimetric sensor for detecting radon by its daughter lead based on the free-fixed auto-assembly structure of Duplex-hemin/G-quadruplex

Novel and label-free colorimetric detection of radon using AuNPs and lead(II)-induced GR5 DNAzyme-based amplification strategy

An Improved Membrane Algorithm for Solving Time-Frequency Atom Decomposition

A novel detection of radon based on its decay product inducing conformational changes of an aptamer probe

Research on the measurement methods of half-voltage in LiNbO₃ crystal electro-optic modulation

Research and application of a non-contact optical voltage sensor for the monitoring of lightning and switching overvoltage in EHV power grid

A naphthalene-based two-photon fluorescent probe for selective and sensitive detection of thiophenols

Effect of thinning on partitioned soil respiration in a young Pinus tabulaeformis plantation during growing season

Synthesis of three-dimensional nanoporous graphene for use as surface-enhanced Raman scattering substrate

Heteroatom-doped graphene-like carbon films prepared by chemical vapour deposition for bifacial dye-sensitized solar cells

Controllable growth of 1–7 layers of graphene by chemical vapour deposition

Renewable culture of microalgae Isochrysis Galbana

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