Qingqing Cheng

ORCID: 0000-0003-2948-8890
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About
Contact & Profiles
Research Areas
  • Electrocatalysts for Energy Conversion
  • Fuel Cells and Related Materials
  • Advanced battery technologies research
  • Nanoplatforms for cancer theranostics
  • Cancer, Hypoxia, and Metabolism
  • Silk-based biomaterials and applications
  • CO2 Reduction Techniques and Catalysts
  • Advanced Photocatalysis Techniques
  • Electrospun Nanofibers in Biomedical Applications
  • Catalytic Processes in Materials Science
  • Ionic liquids properties and applications
  • Electrochemical Analysis and Applications
  • Quantum Dots Synthesis And Properties
  • Polymer Surface Interaction Studies
  • Chalcogenide Semiconductor Thin Films
  • Ammonia Synthesis and Nitrogen Reduction
  • Metamaterials and Metasurfaces Applications
  • Speech and Audio Processing
  • Human Motion and Animation
  • Freshwater macroinvertebrate diversity and ecology
  • Petroleum Processing and Analysis
  • Covalent Organic Framework Applications
  • Fossil Insects in Amber
  • Photonic and Optical Devices
  • Direction-of-Arrival Estimation Techniques

Shanghai Advanced Research Institute
2015-2025

Chinese Academy of Sciences
2015-2025

University of Chinese Academy of Sciences
2018-2024

Taiyuan University of Science and Technology
2024

Suzhou Institute of Nano-tech and Nano-bionics
2019-2023

Hebei General Hospital
2023

First Affiliated Hospital of Jinan University
2020-2022

Jinan University
2021-2022

Case Western Reserve University
2020

University of Science and Technology of China
2020

Pt atomic clusters (Pt-ACs) display outstanding electrocatalytic performance because of their unique electronic structure with a large number highly exposed surface atoms. However, the small size and specific area intrinsically associated ACs pose challenges in synthesis stabilization Pt-ACs without agglomeration. Herein, we report novel one-step carbon-defect-driven electroless deposition method to produce ultrasmall but well-defined stable supported by defective graphene (Pt-AC/DG)...

10.1021/jacs.9b11524 article EN Journal of the American Chemical Society 2020-02-23

High-loaded Pt1Co1-IMC@Pt/C catalyst enables high power PEMFCs, meeting the practical application requirement in electric vehicles.

10.1039/d1ee02530a article EN Energy & Environmental Science 2021-11-12

Ensuring high catalytic activity and durability at low iridium (Ir)usage is still a big challenge for the development of electrocatalysts toward oxygen evolution reaction (OER) in proton exchange membrane water electrolysis (PEMWE). Here, rapid liquid-reduction combined with surface galvanic replacement strategy reported to synthesize sub 2 nm high-entropy alloy (HEA) nanoparticles featured Ir-rich IrRuNiMo medium-entropy oxide shell (Ir-MEO) IrRuCoNiMo HEA core (HEA@Ir-MEO). Advanced...

10.1002/adma.202314049 article EN Advanced Materials 2024-03-22

The atomic-local environment of catalytically active sites plays an important role in tuning the activity carbon-based metal-free electrocatalysts (C-MFECs). However, rational regulation is always impeded by synthetic limitations and insufficient understanding formation mechanism catalytic sites. Herein, possible cleavage carbon nanotubes (CNTs) through crossing points during ball-milling proposed, resulting abundant CNT tips that are more susceptible to be modified heteroatoms, achieving...

10.1002/adma.202303905 article EN Advanced Materials 2023-08-03

Ruthenium (Ru) is an ideal substitute to commercial Pt/C for the acidic hydrogen evolution reaction (HER), but it still suffers from undesirable activity due strong adsorption free energy of H* (ΔGH*). Herein, we propose crystalline phase engineering by loading Ru clusters on precisely prepared cubic and hexagonal molybdenum carbide (α-MoC/β-Mo2C) supports modulate interfacial interactions achieve high HER activity. Advanced spectroscopies demonstrate that β-Mo2C shows a lower valence state...

10.1021/acs.nanolett.4c00495 article EN Nano Letters 2024-05-03

Injectable hydrogel systems are important bone substitutes for regeneration because of their handling properties and the ability to fill irregular defects. Silk-hydroxyapatite composite materials with silk nanofibers in hydrogels were prepared used as biomaterials osteogenesis. These thixotropic nanofiber water-dispersible silk-HA nanoparticles blended form injectable nanoscale a homogeneous distribution high HA content [60% (w/w)] imitate niche. A modulus ∼21 kPa was also achieved following...

10.1021/acsami.7b03932 article EN ACS Applied Materials & Interfaces 2017-05-04

Co/Zn atomic dual-sites anchored on N doped carbon nanofibers for efficient and durable H<sub>2</sub>–O<sub>2</sub> fuel cells (∼0.65 V @ 400 mA cm<sup>−2</sup>, 150 hours).

10.1039/c9ta12207a article EN Journal of Materials Chemistry A 2020-01-01

The conversion of CO2 into valuable chemicals has captured extensive attention for its significance in energy storage and greenhouse gas alleviation, but the development cost-effective electrocatalysts with high activity selectivity remains bottleneck. Herein, we designed a Fe–N–C nanofiber catalyst featuring core–shell structure consisting iron nitride nanoparticles encapsulated within Fe N codoped carbon layers that can efficiently catalyze to CO nearly 100% selectivity, faradic efficiency...

10.1021/acsenergylett.8b00474 article EN ACS Energy Letters 2018-04-30

Insufficient catalyst utilization, limited mass transport, and high ohmic resistance of the conventional membrane electrode assembly (MEA) lead to significant performance losses proton exchange water electrolysis (PEMWE). Herein we propose a novel ordered MEA based on anode with 3D membrane/catalytic layer (CL) interface gradient tapered arrays by nanoimprinting method, confirmed energy dispersive spectroscopy. Benefiting from maximized triple-phase interface, rapid CL overall design, such...

10.1021/acs.nanolett.2c03461 article EN Nano Letters 2022-12-05

Developing facile and effective strategies to improve the active site density of transition-metal nitrogen codoped carbon (M–N–C) catalysts for oxygen reduction reaction (ORR) remains a challenge. Herein, we propose ordered templates steam-etching synergetic approach increase Fe–N–C with interconnected porous structures. The steam etching corrodes inactive amorphous while sites are well preserved. X-ray absorption fine structure fitting result reveal uniform distribution atomically dispersed...

10.1021/acscatal.2c00408 article EN ACS Catalysis 2022-04-01

Aerogel fibers, combining the nanoporous characteristics of aerogels with slenderness have emerged as a rising star in nanoscale materials science. However, endowing aerogel fibers good strength and high toughness remains elusive due to their porosity fragile mechanics. To address this challenge, paper reports supertough (SAFs) initially started from ionic-liquid-dissociated cellulose via wet-spinning supercritical drying sequence. The assembled nanofibers exhibit specific surface area (372...

10.1021/acsnano.3c05894 article EN cc-by ACS Nano 2023-09-12

Direct electrosynthesis of hydrogen peroxide (H2O2) by oxygen reduction is a green and safe strategy to replace the traditional anthraquinone process. Herein, we have designed two-dimensional redox-active cationic covalent triazine network be used directly as cost-effective metal-free electrocatalyst for reaction (ORR) form H2O2. Such dicationic 2D polymer possesses porous structure with pore diameters 2-10 nm total N content 13.3 wt%. The electron paramagnetic resonance experiment confirms...

10.1039/c8cc00957k article EN Chemical Communications 2018-01-01

Nanofibrous Kevlar aerogel metamaterials have been made using cryo-3D printing with special drying techniques at a high resolution and low energy cost. They possess outstanding auxetic mechanical properties controlled Poisson's ratio are multi-functionalisable.

10.1039/d0ta02590a article EN cc-by-nc Journal of Materials Chemistry A 2020-01-01

Hemostatic materials have played a significant role in mitigating traumatic injury by controlling bleeding, however, the fabrication of desirable material's structure to enhance accumulation blood cells and platelets for highly efficient hemostasis is still great challenge. In this work, directed assembly poly(vinyl alcohol) (PVA) macromolecules covering rigid Kevlar nanofiber (KNF) network during 3D printing process utilized fabricate hydrophilic, biocompatible, mechanically stable KNF-PVA...

10.1002/adhm.202201591 article EN cc-by-nc Advanced Healthcare Materials 2022-09-27

Vicinal Co atoms modulate the electronic structure of Fe site and adsorption behaviour intermediates, boosting ORR performance.

10.1039/d2ta00884j article EN Journal of Materials Chemistry A 2022-01-01

Abstract O 2 ‐delivering nanosystems have been used to antagonize hypoxia‐induced tumor therapeutic resistance. However, short‐time oxygen storage is still a bottleneck for these nanosystems, which results in decrease blood circulation time and accumulation of tumors, thus reducing the efficacy. Herein, long‐term nanosystem (O ‐PIr@Si@PDA) designed overcome hypoxia treatment nasopharyngeal carcinoma. This constructed by using perfluorooctyl bromide (PFOB) core as carrier, functionalized with...

10.1002/adfm.202002369 article EN Advanced Functional Materials 2020-05-15

Strong transboundary electron transfer in high-entropy quantum-dots significantly accelerates the Tafel kinetics HER, which effectively reduces cost of cathode catalyst proton exchange membrane water electrolysis (PEMWE).

10.1039/d4ee01825g article EN cc-by-nc Energy & Environmental Science 2024-01-01
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