Hongfang Zhang

ORCID: 0000-0002-3255-1857
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About
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Research Areas
  • Polymer crystallization and properties
  • Electrochemical sensors and biosensors
  • Polymer Nanocomposites and Properties
  • Electrochemical Analysis and Applications
  • Advanced biosensing and bioanalysis techniques
  • biodegradable polymer synthesis and properties
  • Synthesis and properties of polymers
  • Ferroelectric and Piezoelectric Materials
  • Conducting polymers and applications
  • Microbial Metabolic Engineering and Bioproduction
  • Analytical Chemistry and Sensors
  • Dielectric materials and actuators
  • Multiferroics and related materials
  • Nanopore and Nanochannel Transport Studies
  • Enzyme Catalysis and Immobilization
  • Silicone and Siloxane Chemistry
  • Dielectric properties of ceramics
  • Polymer Nanocomposite Synthesis and Irradiation
  • Microwave Dielectric Ceramics Synthesis
  • Fiber-reinforced polymer composites
  • Biosensors and Analytical Detection
  • Advanced Sensor and Energy Harvesting Materials
  • Advanced Nanomaterials in Catalysis
  • Bacterial Genetics and Biotechnology
  • Biofuel production and bioconversion

Beijing University of Chemical Technology
2022-2025

Ministry of Education of the People's Republic of China
2014-2024

Northwest University
2014-2024

Wilmar International (Singapore)
2021-2024

Suzhou University of Science and Technology
2012-2024

Liaocheng University
2022-2023

Shanxi Medical University
2021

Affiliated Eye Hospital of Wenzhou Medical College
2018-2020

Wenzhou Medical University
2018-2020

Agency for Science, Technology and Research
2016-2017

Abstract Analysis of the nonisothermal melt and cold crystallization kinetics poly(aryl ether ketone ketone) (PEEKK) was performed by using differential scanning calorimetry (DSC). The Avrami equation modified Jeziorny could describe only primary stage PEEKK. And, Ozawa analysis, when applied to this polymer system, failed its behavior. A new convenient approach for proposed combining with equation. By evaluating kinetic parameters in approach, behavior PEEKK analyzed. According Kissinger...

10.1002/pen.11700 article EN Polymer Engineering and Science 1997-03-01

Nonisothermal melt crystallization kinetics of PEDEKmK linked by meta-phenyl and biphenyl was investigated differential scanning calorimetry (DSC). A convenient reasonable kinetic approach used to describe the nonisothermal behavior, its applicability verified when modified Avrami analysis Jeziorny Ozawa equation were applied process. The activation energy estimated be −219 kJ/mol Kissinger method while crystallizing from nonisothermally. These observed characteristics compared those other...

10.1002/(sici)1097-4628(19980131)67:5<815::aid-app6>3.0.co;2-w article EN Journal of Applied Polymer Science 1998-01-31

A major challenge in bioethanol fermentation is the low tolerance of microbial host towards end product bioethanol. Here we report to improve ethanol E. coli from transcriptional level by engineering its global transcription factor cAMP receptor protein (CRP), which known regulate over 400 genes coli. Three tolerant CRP mutants (E1– E3) were identified error-prone PCR libraries. The best ethanol-tolerant strain E2 (M59T) had growth rate 0.08 h−1 62 g/L ethanol, higher than that control at...

10.1371/journal.pone.0057628 article EN cc-by PLoS ONE 2013-02-28

Abstract n -Butanol has several favourable properties as an advanced fuel or a platform chemical. Bio-based production of -butanol is becoming increasingly important for sustainable chemical industry. Synthesis can be achieved via more than one metabolic pathway. Here we report the engineering Saccharomyces cerevisiae to produce through synergistic pathway: endogenous threonine pathway and introduced citramalate Firstly, characterized optimized pathway; then, synthase (CimA) mediated was...

10.1038/srep25675 article EN cc-by Scientific Reports 2016-05-10

Abstract Adipic acid is one of the most important industrial dicarboxylic acids and used mainly as a precursor to nylon‐6,6. Currently, commercial adipic produced primarily from benzene by chemical route that associated with environmental, health, safety concerns. Herein, we report new process produce an inexpensive renewable feedstock, sugar beet residue combining engineered Escherichia coli strain Re‐based catalysts. The E. converted d ‐galacturonic mucic acid, which was precipitated...

10.1002/cctc.201600069 article EN ChemCatChem 2016-03-15

We present a powder-in-sol precursor hybrid processing route to synthesize dense, homogenous, and fine-grained Ni0.5Zn0.5Fe2O4–Pb(Zr0.53Ti0.47)O3 (NZFO–PZT) multiferroic ceramic composites report their ferromagnetic-ferroelectric characteristics. Nanosized NZFO ferromagnetic powders are dispersed into PZT ferroelectric sol-gel uniformly distributed slurry is prepared by ball-milling mixing of the powder-precursor suspension prior be sintered at low temperatures form composites. The show...

10.1063/1.3021349 article EN Journal of Applied Physics 2008-11-15

ABSTRACT The limited isobutanol tolerance of Escherichia coli is a major drawback during fermentative production. Different from classical strain engineering approaches, this work was initiated to improve E. its transcriptional level by global transcription factor cAMP receptor protein (CRP). Random mutagenesis libraries were generated error‐prone PCR crp , and the subjected stress for selection. Variant IB2 (S179P, H199R) isolated exhibited much better growth (0.18 h −1 ) than control (0.05...

10.1002/bit.25134 article EN Biotechnology and Bioengineering 2013-11-06

Abstract The efficacy of radiotherapy, one major treatment modality for esophageal squamous cell carcinoma (ESCC) is severely attenuated by radioresistance. Epithelial-to-mesenchymal transition (EMT) a cellular process that determines therapy response and tumor progression. However, whether EMT induced ionizing radiation involved in radioresistance has been less studied ESCC. Using multiple fractionated irradiation, the radioresistant cancer line KYSE-150R had established from its parental...

10.1093/jrr/rrw030 article EN cc-by-nc Journal of Radiation Research 2016-04-29

Triboelectrification, a process that transforms mechanical energy into electrical through friction, holds promise for eco-friendly wastewater treatment. This study delves the enhancement of tribocatalytic dye degradation using SrTiO₃, material notable its non-piezoelectric and centrosymmetric properties. The synthesis uni- bi-doped SrTiO₃ particles, achieved solid-state reaction at 1000 °C, results in high-purity cubic perovskite structure. Doping with Rhodium (Rh) Carbon (C) causes crystal...

10.26599/jac.2024.9220925 article EN cc-by Journal of Advanced Ceramics 2024-06-09

Differential scanning calorimeter (DSC), wide-angle X-ray diffraction (WAXD), small-angle scattering (SAXS), and density techniques have been used to investigate the structural parameters of solid state Nylon 11 annealed at different temperatures. The equilibrium heat fusion Δ melting temperature were estimated be 189.05 J g-1 202.85 °C respectively by using Hoffman−Weeks approach. degree crystallinity (Wc,x) ranged approximately 24−42% was calculated WAXD compared with those calorimetry...

10.1021/ma000298d article EN Macromolecules 2000-07-22

Nonisothermal melt and cold crystallization kinetics of poly(aryl ether ketone ketone) (PEKEKK) were investigated by differential scanning calorimetry (DSC). The Avrami equation modified Jeziorny could only describe the primary stage nonisothermal PEKEKK. Also, Ozawa not its behavior. A convenient reasonable kinetic approach was used to activation energy estimated be −264 370 KJ/mol for Kissinger method. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 77: 2865–2871,

10.1002/1097-4628(20000923)77:13<2865::aid-app7>3.0.co;2-2 article EN Journal of Applied Polymer Science 2000-01-01

Abstract A polymer can be partially crystalline, such as polyethylene (PE), isotactic polypropene (it-pp), and poly (ethylene terephthalate) (PET), or noncrystalline, commercially available atactic (methyl methacrylate) (PMMA) polystyrene (a-PS); crystalline polymers are customarily called polymers. The degree of crystallinity is an important parameter for physical mechanical properties profoundly dependent on the crystallinity. It well known that determined by a variety methods, example,...

10.1080/15321799508021751 article EN Journal of Macromolecular Science Part C- Polymer Reviews 1995-11-01
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