Qifeng Zhao

ORCID: 0000-0002-0751-1765
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Research Areas
  • Radiation Effects in Electronics
  • Iron oxide chemistry and applications
  • Advanced Photocatalysis Techniques
  • Advancements in Semiconductor Devices and Circuit Design
  • Semiconductor materials and devices
  • Horticultural and Viticultural Research
  • Corporate Finance and Governance
  • Firm Innovation and Growth
  • Fermentation and Sensory Analysis
  • Copper-based nanomaterials and applications
  • Advanced Computational Techniques and Applications
  • Phosphorus and nutrient management
  • Corruption and Economic Development
  • Electrical and Thermal Properties of Materials
  • Private Equity and Venture Capital
  • Ethics in Business and Education
  • Transition Metal Oxide Nanomaterials
  • Electrocatalysts for Energy Conversion
  • GaN-based semiconductor devices and materials
  • Advanced Sensor Technologies Research
  • Semiconductor Quantum Structures and Devices
  • Machine Fault Diagnosis Techniques
  • Academic integrity and plagiarism
  • Plant Reproductive Biology
  • Gear and Bearing Dynamics Analysis

Shandong University of Science and Technology
2021-2025

South China University of Technology
2024

Renmin University of China
2020-2024

Institute of Quantitative and Technical Economics
2020-2023

Shanxi Agricultural University
2023

Chinese Academy of Social Sciences
2020-2023

Shanxi Academy of Agricultural Sciences
2019-2023

Zhongyuan University of Technology
2019-2022

City University of Hong Kong
2019

National University of Defense Technology
2017

Abstract Incorporating the charge transfer medium between semiconductor and cocatalyst accelerates separation of photogenerated charges, enhancing photoelectrochemical water oxidation performance. However, structure regulation in situ generated by is usually neglected, which would alter injection efficiency holes. Besides, more relevant technologies are necessary to investigate intrinsic action each part on oxidation. Herein, a novel triadic photoanode designed rationally, involving Ti‐doped...

10.1002/adfm.202424885 article EN Advanced Functional Materials 2025-02-11

Abstract Electronic structure regulation is a prevailing approach to modifying the electrocatalysts in oxygen evolution reaction (OER), yet its impact on co‐catalysts modified photoanodes remains uncertain. Herein, B‐modified NiFe‐LDH (NiFeB‐hydx) co‐catalyst situ immobilized onto Ti‐Fe 2 O 3 and emphasizes effect of lower‐valence Ni (Ni 2‐δ ) photoelectrochemical (PEC) process. A flexible adjustment oxidation state from +2 0 by manipulating content corresponding B quantity achieved....

10.1002/adfm.202406999 article EN Advanced Functional Materials 2024-10-14

Phthalocyanine with adjustable band energy and a binding group acts as hole extraction layer to accelerate transfer from Ti-Fe 2 O 3 CoPi, thus improves the PEC water oxidation performance of .

10.1039/d2qi00701k article EN Inorganic Chemistry Frontiers 2022-01-01

10.1016/j.pacfin.2024.102547 article Pacific-Basin Finance Journal 2024-09-01

Rhizosphere soil microbial communities play an important role in grapevine growth. However, the relationship of rhizosphere bacterial community and berry quality Hutai No.8 grape with different tree-ages is unclear. In this work, Biolog-ECO technique was used to explore functional diversity five ages (3, 5, 7, 9 11 years old). Meanwhile, indicators related appearance, flavor substance also examined.Principal component analysis mainly separated 3-year-old (first bear fruit) other tree-ages....

10.1002/jsfa.9690 article EN Journal of the Science of Food and Agriculture 2019-03-14

<p>This study investigates the impact of inventor CEOs on firm performance using a manually collected database firms' inventors. Our findings reveal that, average, firms with experience one- and two-percentage-point increase in ROA ROE, respectively, compared to noninventor CEOs. To address potential endogeneity issues, we employ turnover analysis, an instrumental variable approach, propensity score matching. The estimation results suggest that significantly enhance by...

10.58567/rea02010001 article EN cc-by Review of Economic Assessment 2023-04-20

Due to variation of working conditions and influence noise in vibration data, rolling bearing intelligent diagnosis based on deep learning faces challenges efficient utilization monitoring data scientific extraction fault features. This study proposes a one-dimensional convolution neural network (1D-CNN)-based method for bearing, which fuses the horizontal vertical signals, makes full use spectral order features by full-spectrum analysis, achieves accurate classification pattern 1D-CNN...

10.1155/2022/8986900 article EN Mathematical Problems in Engineering 2022-07-07

In this report a new breeding strategy that combines traditional crossbreeding with chemically-induced mutation is described. strategy, germinated diploid hybrid grape seeds were treated colchicine at two temperatures (25°C during day and 20°C night). After the seedlings planted in field, they first examined morphologically to check their ploidy, followed by chromosome counting using tip-end slicing method further confirm ploidy of meristematic cells L1, L2, L2 layers. The confirmation can...

10.17660/actahortic.2014.1046.32 article EN Acta Horticulturae 2014-07-01

Gearboxes are widely used elements in mechanical equipment. Accurate fault diagnosis of the gearbox is essential to ensure normal operation entire Owing complexity vibration signal when compound occurs, it quite difficult diagnose with high-precision. In this paper, a novel method presented, which takes advantage Wavelet Packet Transform(WPT) extracting feature components and determines type according results Sparse Representation based Classification (SRC). proposed method, WPT adopted...

10.1109/ccdc49329.2020.9164310 article EN 2020-08-01

A new static–dynamic equivalence approach for beam bending is developed to determine the critical stability load of a vibrating resting on an elastic foundation. It validated that corresponding arbitrary natural frequency parameter can be obtained via both vibration and static analysis approaches. By introducing foundation stiffness parameter, substituted, thus allowing formulation solve corresponds zero or negative constant. In analysis, governing equation motion solved by harmonic response...

10.1080/15376494.2019.1622823 article EN Mechanics of Advanced Materials and Structures 2019-06-04

The effects of gamma irradiation on the DC and AC characteristics InGaP/GaAs single heterojunction bipolar transistors (SHBTs) are investigated comprehensively for first time, which is based experimental data before irradiation, after annealing. A simplified VBIC device model developed to describe devices. parameters extracted from Finally, degraded rates used study radiation-induced degradation performance.

10.1080/10420150.2019.1684916 article EN Radiation effects and defects in solids 2019-11-05
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