Search results for: ZhiQiang Zheng

Items from 1 to 20 out of 151 results

article

A Multi‐Interface Structure of Graphdiyne/Cobalt Oxides for Chlorine Production

Huimin Liu, Lu Qi, Zhaoyang Chen, Shuya Zhao, more

Small > 20 > 37 > n/a - n/a

A challenge facing the chlor‐alkali process is the lack of electrocatalyst with high activity and selectivity for the efficient industrial production of chlorine. Herein the authors report a new electrocatalyst that can generate multi‐interface structure by in situ growth of graphdiyne on the surface of cobalt oxides (GDY/Co₃O₄), which shows great potential in highly selective and efficient chlorine...

article

Understanding the Impact of Peripheral Substitution on the Activity of Co Phthalocyanine in Sulfur Reduction Catalysis

Xinhong Zhao, Yukun Zhang, Weizhe Liu, Zhiqiang Zheng, more

Advanced Functional Materials > 34 > 13 > n/a - n/a

Catalytic materials are effective in promoting sulfur utilization in lithium‐sulfur batteries. Co phthalocyanine (CoPc) presents a unique planner single‐molecular structure with a highly active Co‐N₄ center for sulfur reduction catalysis. The high flexibility of phthalocyanines offers rich opportunities for electronic structure modulation toward enhanced catalytic activities. To guide future design...

article

Effect of fast‐track surgery on postoperative wound pain in patients with prostate cancer: A meta‐analysis

Shicheng Fan, Haolin Liu, Yuanquan Zhu, Zhiqiang Zheng, more

International Wound Journal > 21 > 2 > n/a - n/a

Fast track surgery (FTS) is widely used in many procedures and has been shown to reduce complications and accelerate recovery. However, no studies have been conducted to assess their effectiveness in treating wounds after radical prostatectomy (RP). The objective of this study was to evaluate the impact of FTS on RP. We went through 4 major databases. A study was conducted by PubMed, the Cochrane...

article

A Graphdiyne Nanoreactor for Conversion of NO₃⁻ to NH₃ from Wastewater

Shuya Zhao, Zhaoyang Chen, Zhiqiang Zheng, Xiaoyu Luan, more

Advanced Functional Materials > 33 > 51 > n/a - n/a

The lack of highly active and selective catalysts is a major obstacle to replace traditional Haber–Bosch process for electrocatalytic production of ammonia (NH₃) at ambient conditions. A new hollow graphdiyne nanoreactor (GDYNR) is reported to overcome this issue effectively. The GDYNR is synthesized by in situ growth of GDY on the inner and outer surfaces of the cobalt hydroxide sphere to form a...

article

Step by Step Induced Growth of Zinc‐Metal Interface on Graphdiyne for Aqueous Zinc‐Ion Batteries

Xiaoyu Luan, Lu Qi, Zhiqiang Zheng, Yaqi Gao, more

Angewandte Chemie > 135 > 8 > n/a - n/a

Rechargeable aqueous zinc ion batteries (AZIBs) promise high energy density, low redox potential, low cost and safety; however, their cycle performances are seriously insufficient to restrict the progress in this field. We propose a new concept of atomic electrode formed on the graphdiyne (GDY). This new idea electrode was synthesized by selectively, uniformly, and stably anchoring Zn atoms on GDY...

article

Step by Step Induced Growth of Zinc‐Metal Interface on Graphdiyne for Aqueous Zinc‐Ion Batteries

Xiaoyu Luan, Lu Qi, Zhiqiang Zheng, Yaqi Gao, more

Angewandte Chemie International Edition > 62 > 8 > n/a - n/a

article

Multisignal optical temperature‐sensing properties of Eu³⁺‐doped NaYF₄ nanoparticles

Wenjun Ma, Zheng Li, Pan Lu, Lin Lin, more

Luminescence > 37 > 12 > 2098 - 2104

In this paper, the multisignal (different emissions/colours) temperature sensing of NaYF₄:Eu³⁺ nanoparticles is investigated, which is based on fluorescence intensity ratios (FIRs) between ⁵D₀→⁷F_J (J=1‐4) and ⁵D₁→⁷F_J’ emissions. The ⁵D₁→⁷F_J’ (J'=0‐2) emissions can be clearly observed due to the low photon energy of NaYF₄. Based on the FIRs between different ⁵D₀→⁷F_J and ⁵D₁→⁷F_J’ emissions, higher absolute/relative...

article

Controlled Growth of the Interface of CdWO_x/GDY for Hydrogen Energy Conversion

Xiaoyu Luan, Zhiqiang Zheng, Shuya Zhao, Yurui Xue, more

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

Directly extracting hydrogen energy from water in one device to achieve sustainable hydrogen energy generation‐conversion‐electricity storage system is an ideal major step forward for enabling a zero‐pollution, hydrogen‐fueled economy. The new concept of hydrogen energy conversion can be enabled by spontaneous reduction of nitrate to ammonia driven by potential differences between the well‐matched...

article

Controlled Growth of Donor–Bridge–Acceptor Interface for High‐Performance Ammonia Production

Shuya Zhao, Zhiqiang Zheng, Lu Qi, Yurui Xue, more

Small > 18 > 13 > n/a - n/a

The intrinsic catalytic activity and active sites of the catalyst originate from the interface efficient charge transfer. A 2D graphdiyne (GDY) layer grown on the surface of zeolitic imidazolate framework nanocubes (ZIFNC@GDY) forms a novel structure of a perfect “donor–bridge–acceptor” interface, in which the ZIFNC and GDY act as electron donor and acceptor, respectively, linked by the sp‐C–Co and...

article

1D Nanowire Heterojunction Electrocatalysts of MnCo₂O₄/GDY for Efficient Overall Water Splitting

Lu Qi, Zhiqiang Zheng, Chengyu Xing, Zhongqiang Wang, more

Advanced Functional Materials > 32 > 11 > n/a - n/a

Rational design and synthesis of non‐precious metal‐based electrocatalysts for efficient overall water splitting (OWS) in an integrated electrolyzer are of great significance for the development of hydrogen energy. To this end, nanowire‐structured heterogenous MnCo₂O₄/graphdiyne arrays are synthesized on the surface of 3D carbon cloth (NW‐MnCo₂O₄/GDY) by using in situ assembly and coupling strategy...

article

Mussel‐Inspired Flexible, Wearable, and Self‐Adhesive Conductive Hydrogels for Strain Sensors

Rui Lv, Zhongwu Bei, Yuan Huang, Yangwei Chen, more

Macromolecular Rapid Communications > 41 > 2 > n/a - n/a

The latest generation of wearable devices features materials that are flexible, conductive, and stretchable, thus meeting the requirements of stability and reliability. However, the metal conductors that are currently used in various equipments cannot achieve these high performance expectations. Hence, a mussel‐inspired conductive hydrogel (HAC–B–PAM) is prepared with a facile approach by employing...

article

Modeling of Keyhole-Induced Pore Formation in Laser-Arc Hybrid Welding of Aluminum Alloy with a Horizontal Fillet Joint

Guoxiang Xu, Lin Li, Pengfei Li, Zhiqiang Zheng, more

Journal of Materials Engineering and Performance > 2019 > 28 > 11 > 6555-6564

A three-dimensional transient model is proposed to investigate the weld pool dynamic behavior in laser + metal inert gas (MIG) hybrid fillet welding of aluminum alloy in the horizontal position, which allows for the joint configuration and coupling of the keyhole, droplet and weld pool as well as the heat and mass exchange between gas and liquid phases and is able to simulate the temperature distribution,...

article

Nonlinear system identification and trajectory tracking control for a flybarless unmanned helicopter: theory and experiment

Bin Zhou, Xingju Lu, Shuai Tang, Zhiqiang Zheng

Nonlinear Dynamics > 2019 > 96 > 4 > 2307-2326

This paper proposes a new nonlinear system identification method in time domain for a small-scale flybarless unmanned helicopter based on an adaptive differential evolution algorithm. By analyzing and processing the real input and output data, a nonlinear parametric model including heave dynamic model, yaw dynamic model and longitudinal–latitudinal subsystem is established. The validity of the identified...

article

Numerical and experimental investigation on weld formation during laser+MIG hybrid fillet welding of aluminum alloy in horizontal position

Guoxiang Xu, Zhiqiang Zheng, Qingnan Cao, Qingxian Hu, more

The International Journal of Advanced Manufacturing Technology > 2019 > 102 > 5-8 > 2683-2694

A three-dimensional transient model is proposed to investigate the weld formation during laser + metal inert gas (MIG) hybrid welding of aluminum alloy for horizontal fillet joint, which considers the coupling of keyhole, droplet, and liquid metal pool as well as the influence of joint geometry feature and welding position. An asymmetrical double-elliptic heat source is utilized to model the arc heat...

article

Effect of interface coupling on magnetoelectric response of Pb(Zr_0.52Ti_0.48)O₃/La_0.67Sr_0.33MnO₃ thin film under different strain states

Peng Zhou, Kun Liang, Ying Liu, Zhiqiang Zheng, more

Applied Physics A > 2018 > 124 > 10 > 1-6

Epitaxial Pb(Zr_0.52Ti_0.48)O₃/La_0.67Sr_0.33MnO₃ (PZT/LSMO) thin film grown on SrTiO₃ single-crystal substrate has been fabricated by pulsed laser deposition. The results of X-ray diffraction and reciprocal space mapping indicate that PZT and LSMO are under different strain states, respectively. This configuration could enhance the interface coupling coefficient (k), resulting in an improvement of magnetoelectric...

article

Distributed Static and Dynamic Circumnavigation Control with Arbitrary Spacings for a Heterogeneous Multi-robot System

Weijia Yao, Huimin Lu, Zhiwen Zeng, Junhao Xiao, more

Journal of Intelligent & Robotic Systems > 2019 > 94 > 3-4 > 883-905

Circumnavigation control algorithms enable multiple robots to rotate around a target while they still preserve a circular formation, which is useful in real world applications such as entrapping a hostile target. Specifically, four quantities are involved: the circumnavigation radius, the angular speed, the height and the phase differences among robots, which are termed spacings in this paper. Based...

article

Task Allocation Without Communication Based on Incomplete Information Game Theory for Multi-robot Systems

Wei Dai, Huimin Lu, Junhao Xiao, Zhiqiang Zheng

Journal of Intelligent & Robotic Systems > 2019 > 94 > 3-4 > 841-856

In the task allocation of multi-robot system, the communication is an important condition to ensure global consistency. Unfortunately, with the popularity of WLAN, the congestion and interference among the bands are particularly severe, making traditional task allocation methods which rely on communication can not work. In this paper, the task allocation without communication is considered to be an...

article

Photodegradation behaviors of polychlorinated biphenyls in methanol by UV-irradiation: Solvent adducts and sigmatropic arrangement

Ting Tang, Zhiqiang Zheng, Rui Wang, Kaibo Huang, more

Chemosphere > 2018 > 193 > C > 861-868

This study has investigated the photolysis of polychlorinated biphenyls (PCBs) in methanol solution under UV irradiation. The results showed that the PCBs containing ortho-chlorine can generate both hydroxylated and methoxylated PCBs (HO-PCBs and MeO-PCBs), while the PCBs with a meta-chlorine but without ortho-chlorine can only generate MeO-PCBs as the only solvent adducts. No solvent adducts were...

article

Effect of fiber post length and abutment height on fracture resistance of endodontically treated premolars prepared for zirconia crowns

Jie Lin, Jukka Pekka Matinlinna, Akikazu Shinya, Michael George Botelho, more

Odontology > 2018 > 106 > 2 > 215-222

The purpose of this study was to compare the fracture resistance, mode of fracture, and stress distribution of endodontically treated teeth prepared with three different fiber post lengths and two different abutment heights, using both experimental and finite element (FE) approaches. Forty-eight human maxillary premolars with two roots were selected and endodontically treated. The teeth were randomly...

article

Enhanced quantum cutting luminescence by Au nanorods through improving radiative transition rate

Biao Zheng, Lin Lin, Zhuohong Feng, Lili Huang, more

Optics Communications > 2017 > 402 > C > 336-339

Quantum cutting (QC) phosphor β- NaYF 4 : Tb 3 + , Yb 3 + nanoparticles (NPs) are decorated with Au nanorods (NRs). By tailoring Au NRs longitudinal plasmon resonance to match the emission wavelength of Yb 3 + ion, plasmon-enhanced near-infrared (NIR) QC luminescence is achieved through improving Yb 3 + ion’s radiative transition rate. The decay curves of Yb ...

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INFONA - science communication portal

Search results for: ZhiQiang Zheng

A Multi‐Interface Structure of Graphdiyne/Cobalt Oxides for Chlorine Production

Understanding the Impact of Peripheral Substitution on the Activity of Co Phthalocyanine in Sulfur Reduction Catalysis

Effect of fast‐track surgery on postoperative wound pain in patients with prostate cancer: A meta‐analysis

A Graphdiyne Nanoreactor for Conversion of NO₃⁻ to NH₃ from Wastewater

Step by Step Induced Growth of Zinc‐Metal Interface on Graphdiyne for Aqueous Zinc‐Ion Batteries

Step by Step Induced Growth of Zinc‐Metal Interface on Graphdiyne for Aqueous Zinc‐Ion Batteries

Multisignal optical temperature‐sensing properties of Eu³⁺‐doped NaYF₄ nanoparticles

Controlled Growth of the Interface of CdWO_x/GDY for Hydrogen Energy Conversion

Controlled Growth of Donor–Bridge–Acceptor Interface for High‐Performance Ammonia Production

1D Nanowire Heterojunction Electrocatalysts of MnCo₂O₄/GDY for Efficient Overall Water Splitting

Mussel‐Inspired Flexible, Wearable, and Self‐Adhesive Conductive Hydrogels for Strain Sensors

Modeling of Keyhole-Induced Pore Formation in Laser-Arc Hybrid Welding of Aluminum Alloy with a Horizontal Fillet Joint

Nonlinear system identification and trajectory tracking control for a flybarless unmanned helicopter: theory and experiment

Numerical and experimental investigation on weld formation during laser+MIG hybrid fillet welding of aluminum alloy in horizontal position

Effect of interface coupling on magnetoelectric response of Pb(Zr_0.52Ti_0.48)O₃/La_0.67Sr_0.33MnO₃ thin film under different strain states

Distributed Static and Dynamic Circumnavigation Control with Arbitrary Spacings for a Heterogeneous Multi-robot System

Task Allocation Without Communication Based on Incomplete Information Game Theory for Multi-robot Systems

Photodegradation behaviors of polychlorinated biphenyls in methanol by UV-irradiation: Solvent adducts and sigmatropic arrangement

Effect of fiber post length and abutment height on fracture resistance of endodontically treated premolars prepared for zirconia crowns

Enhanced quantum cutting luminescence by Au nanorods through improving radiative transition rate

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