Zhiwei Wang

ORCID: 0000-0002-2398-9240
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About
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Research Areas
  • Advanced Photocatalysis Techniques
  • Quantum Dots Synthesis And Properties
  • Electrocatalysts for Energy Conversion
  • Chalcogenide Semiconductor Thin Films
  • Gold and Silver Nanoparticles Synthesis and Applications
  • Advanced Battery Materials and Technologies
  • Advanced Sensor and Energy Harvesting Materials
  • Catalytic Processes in Materials Science
  • Electrochemical Analysis and Applications
  • Advancements in Battery Materials
  • Advanced Electron Microscopy Techniques and Applications
  • Invertebrate Immune Response Mechanisms
  • Neurobiology and Insect Physiology Research
  • Graphene research and applications
  • Copper-based nanomaterials and applications
  • ZnO doping and properties
  • Advanced Nanomaterials in Catalysis
  • Ammonia Synthesis and Nitrogen Reduction
  • Nanocluster Synthesis and Applications
  • Conducting polymers and applications
  • Advanced battery technologies research
  • nanoparticles nucleation surface interactions
  • Gas Sensing Nanomaterials and Sensors
  • Force Microscopy Techniques and Applications
  • Advanced biosensing and bioanalysis techniques

Guangxi University
2018-2025

Shanghai Electric (China)
2025

University of Chinese Academy of Sciences
2015-2024

Chinese Academy of Sciences
2015-2024

Tsinghua University
2022-2024

Dalian Institute of Chemical Physics
2024

Shanghai Innovative Research Center of Traditional Chinese Medicine
2024

Institute of Process Engineering
2024

State Key Laboratory of Multiphase Complex Systems
2024

University Town of Shenzhen
2024

Abstract Traditional topical ointment applied on the skin surface has poor drug penetration due to thickening of stratum corneum for psoriasis. Microneedles (MNs) provide a desirable opportunity promote penetration. However, common MNs are difficult meet requirement on‐demand delivery. In this study, smart electrical responsive is fabricated by introducing conductive material polypyrrole (PPy). Further, self‐powered controllable transdermal delivery system (sc‐TDDS) based piezoelectric...

10.1002/adfm.202104092 article EN Advanced Functional Materials 2021-06-25

Dual-doped ruthenium-based nanocrystals were developed as efficient and stable electrocatalysts for acidic overall seawater splitting with superior activity durability.

10.1039/d4ta05277c article EN Journal of Materials Chemistry A 2024-01-01

Abstract Urea‐assisted water splitting is a promising energy‐saving hydrogen (H 2 ) production technology. However, its practical application hindered by the lack of high‐performance bifunctional catalysts for urea oxidation reaction (UOR) and evolution (HER). Herein, heterostructured catalyst comprising highly active NiSe Ni 3 Se , along with conductive graphene‐coated nickel foam skeleton (NiSe‐Ni /GNF) reported. The NiSe‐Ni originates from in situ selenization foam, allowing careful...

10.1002/smtd.202401976 article EN Small Methods 2025-01-07

In this work, by employing halogen elements (fluorine, chlorine, bromine, and iodine) as dopant we demonstrate a unique strategy to enhance the output performance of ZnO-based flexible piezoelectric nanogenerators. For halogen-doped ZnO nanowire film, dopants doping concentration dependent lattice strain along c-axis are established confirmed EDS, XRD, HRTEM analysis. Although induced charge separation was theoretically proposed, it has not been experimentally investigated for wurtzite...

10.1021/acsami.5b10345 article EN ACS Applied Materials & Interfaces 2015-12-24

Photodynamic therapy (PDT) is a clinically approved, minimally invasive therapeutic technique that can induce the regression of targeted lesions via generating excess cytotoxic reactive oxygen species. However, due to limited penetration depth visible excitation light and intrinsic hypoxia microenvironment solid tumors, efficacy PDT in treatment cancer, especially deep-seated or large unsatisfactory. Herein, we developed an efficient vivo system based on nanomaterial, dihydrolipoic acid...

10.1021/acsnano.9b05169 article EN ACS Nano 2019-10-31

Rational design of efficient bifunctional oxygen reduction reaction (ORR) and evolution (OER) electrocatalysts are critical for rechargeable Li–O2 batteries. Here, we report inverse spinel Co[Co,Fe]O4/nitrogen-doped graphene (NG) composite used as a promising catalyst The cells with Co[Co,Fe]O4/NG exhibit high initial capacity, remarkable cyclability, good rate capability. Moreover, the overpotential batteries is reduced significantly. improved ORR/OER performances attributed to property...

10.1021/acscatal.7b04401 article EN ACS Catalysis 2018-04-04

A facile fabrication approach of large‐scale flexible films is reported, with one surface side consisting Ag‐nanoparticle (Ag‐NP) decorated polyacrylonitrile (PAN) nanohump (denoted as Ag‐NPs@PAN‐nanohump) arrays. This achieved via molding PAN ordered arrays on and then sputtering much smaller Ag‐NPs onto each the PAN‐nanohumps. Surface‐enhanced Raman scattering (SERS) activity Ag‐NPs@PAN‐nanohump array can be improved by curving film during Ag‐sputtering process to increase density...

10.1002/smll.201501505 article EN Small 2015-08-27

Optical fiber-Raman devices integrated with plasmonic nanostructures have promising potentials for in situ probing remote liquid samples and biological samples. In this system, the fiber probe is required to simultaneously demonstrate stable surface enhanced Raman scattering (SERS) signals high sensitivity toward target species. Here we a generic approach integrate presynthesized tapered probes that are prepared by dipping-etching method, through reversed electrostatic attraction between...

10.1021/acsami.5b04202 article EN ACS Applied Materials & Interfaces 2015-07-17

Thin-film solar cells based on polycrystalline Cu(In,Ga)Se2 (CIGS) and CdTe photovoltaic semiconductors have reached remarkable laboratory efficiencies. It is surprising that these thin-film can reach such high efficiencies despite containing a density of grain boundaries (GBs), which would seem likely to be nonradiative recombination centers for photo-generated carriers. In this paper, we review our atomistic theoretical understanding the physics in CIGS absorbers. We show intrinsic GBs...

10.1063/1.4913833 article EN Journal of Applied Physics 2015-03-16

Structural investigations on the K0.8Fe1.6+xSe2 superconducting materials have revealed microstripes arising from phase separation. Two coexisting structural phases can be characterized by modulations of q1 = 1/5[3a* + b*], antiferromagnetic K0.8Fe1.6Se2, and q2 1/2[a* KyFe2Se2, respectively. These stripe patterns also show visible correlation with anisotropic assembly particles along [110] [11̅0] directions. In addition to notable structures, a nanoscale separation appears in present system...

10.1021/jp306310m article EN The Journal of Physical Chemistry C 2012-07-30

We report on the large-scale synthesis of Ag-nanoparticle (Ag-NP) decorated ZnO-mesoporous-nanosheets (NSs) grafted a flexible carbon fiber cloth (CFC), as sensitive and reproducible surface enhanced Raman scattering (SERS) substrates with excellent flexibility. The composite SERS-substrates are achieved by combination atomic layer deposition ZnO-seeds each CFC (denoted ZnO-seeds@CFC), chemical bath subsequent pyrolysis for creation ZnO-mesoporous-NSs ZnO-seeds@CFC, ion-sputtering Ag-NPs...

10.1039/c4nr03398a article EN Nanoscale 2014-10-23

We report on in situ observations of nucleation, growth, and aggregation hybrid organic–inorganic perovskites by liquid-cell transmission electron microscopy. Direct crystallization CH3NH3PbI3 nanoparticles is achieved through an beam-assisted solvent evaporation approach. Time-lapse TEM imaging the reveals a growth trend which not entirely consistent with classical Lifshitz–Slyozov–Wagner model. Significantly complex dynamical behaviors are observed during coalescence process nanoparticles....

10.1021/acsnano.6b04234 article EN publisher-specific-oa ACS Nano 2016-09-20

The atomic configuration of nanoparticles is key to their properties, in a way that resembles the structure-function correlation biomolecules, and depends on growth mechanism. Coalescence often an important step nanoparticles, both liquid gas phase. In coalescence, two preformed clusters collide merge form larger aggregate, whose shape evolves from initial configuration, which strongly out equilibrium, towards more compact structures. Here coalescence phase gold size ∼2 nm simulated by...

10.1039/c9nr10163b article EN Nanoscale 2020-01-01

Developing efficient heterogeneous H2O2 decomposition catalysts under neutral conditions is of great importance in many fields such as clinical therapy, sewage treatment, and semiconductor manufacturing but still suffers from low intrinsic activity ambiguous mechanism understanding. Herein, we constructed activated carbon supported with an Ir–Fe dual-metal-atom active sites catalyst (IrFe-AC) by using a facile method based on pulsed laser. The electron redistribution leads to the formation...

10.1021/acsnano.3c07223 article EN ACS Nano 2024-01-18

Ambient urea synthesis via C–N coupling from CO2 and nitrate reduction offers an attractive alternative to the Bosch-Meiser route, but it is hindered by lack of efficient catalysts. Herein, we report that Fe-doped InOOH nanosheets effectively catalyze coreduction nitrate, giving a high Faradaic Efficiency 26.9%, yield rate 980.6 μg h–1 mgcat.–1, good durability. Theoretical calculations further elucidate iron dopants can tailor reactivity In site, facilitating hydrogenation key *CO2NH2...

10.1021/acs.inorgchem.4c03881 article EN Inorganic Chemistry 2024-10-25

To effectively tackle the operational challenges facing today's bulk power systems with growing uncertainties, this paper presents a novel data-driven method for transient stability assessment of AC/DC hybrid using auto-encoder-based algorithms feature extraction and convolutional deep belief networks Boltzmann machines training accurate robust models. First, set is established from grid states, stack-based noise reduction automatic encoder (SDAE) used to extract key features that...

10.1109/access.2025.3528351 article EN cc-by IEEE Access 2025-01-01

A newly designed counter electrode (CE) composed of a hybridized structure Au networks and cobalt sulfide (CoS) nanowire (NW) arrays is presented for flexible dye‐sensitized solar cells (DSSCs) quantum dot‐sensitized (QDSSCs). The sheet resistance the ≈10 Ω sq −1 with transmittance up to 90%. CoS NWs/Au show excellent electrocatalytic activity lower charge transfer toward reduction both S x 2− ions I 3 − ions. exhibits remarkable mechanical strength no obvious changes in morphology even...

10.1002/aenm.201500141 article EN Advanced Energy Materials 2015-04-10

Abstract Annealing in S vapor greatly improves the performance of electroplated Cu 2 ZnSnS 4 (CZTS) solar cells based on bifacial configuration Al‐doped ZnO (AZO, front contact)/ZnO/CdS/CZTS/indium tin oxide (ITO, back contact), as compared to H annealing our previous works. S‐vapor does not cause severe damage conductivity ITO contact. The highest device efficiency 5.8 % was reached under 1 sun illumination from AZO side. well‐preformed devices contact demonstrate smaller series resistances...

10.1002/cssc.201600440 article EN ChemSusChem 2016-07-11
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