Peijuan Zhang

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High-Precision and Reliable Thermal Conductivity Measurement for Graphene Films Based on an Improved Steady-State Electric Heating Method

Acta Physico-Chimica Sinica (2024)

Jiahao Lu Xin Ming Yingjun Liu Yuanyuan Hao Peijuan Zhang

Thermal conductivity measurement

10.3866/pku.whxb202407003

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Preparation of Nanodiamond‐Fucoxanthin and Its Application as a Nanodrug Delivery System

ChemistrySelect (2023)

Yanyu Dou Tao Yang Yanyan Sun Wei Zhao Peijuan Zhang

Abstract Nanodiamonds (NDs) are advantageous for targeted cancer treatment with payload medications due to their good biocompatibility. Herein, a nanodrug delivery system, ND‐fucoxanthin (ND‐FX), was generated by combining FX and acyl chloride‐functionalized NDs, which were created by dispersing and surface‐modifying NDs. The structure and characteristics of NDs were examined via X‐ray diffraction, transmission electron microscopy, and Fourier transform infrared spectroscopy. Subsequently, the drug‐loading and ‐release rates of ND‐FX under different pH conditions were calculated using ultraviolet‐visible spectrophotometeric analysis. The drug‐loading rate of the ND‐FX system was 13.17 %; release rate of FX at pH 7.4 and 6.5 was 27.79 % and 54.65 %, respectively; and cumulative release rate of ND‐FX reached 79.98 % over a release duration of 72 h at pH 5.0. Meanwhile, in vitro cytotoxicology experiments demonstrated that ND‐FX effectively inhibited the activity of HeLa and HepG2 cells. These results demonstrate the potential value of NDs in the field of nanodrug delivery applications.

Nanodiamond

Biocompatibility

HeLa

10.1002/slct.202300020

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An Improved Thermal Conductivity Measurement Scheme for Macroscopic Graphitic Films Using the Laser Flash Method

Journal of Thermal Science (2024)

Peijuan Zhang Xin Ming Yingjun Liu Xuelong Wang Hang Shi

Laser flash analysis

Thermal conductivity measurement

10.1007/s11630-024-1997-x

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High-Precision and Reliable Thermal Conductivity Measurement for Graphene Films Based on an Improved Steady-State Electric Heating Method

Acta Physico-Chimica Sinica (2025)

Jiahao Lu Xin Ming Yingjun Liu Yuanyuan Hao Peijuan Zhang

Thermal conductivity measurement

Electric heating

10.1016/j.actphy.2025.100045

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Scalable synthesis of reusable Ag@NiO micro-nanosynergized composite for highly fast reduction of 4-nitrophenol

Journal of Nanoparticle Research (2022)

Yanyan Sun Yunhong Liao Xiaogang Chen Yuanyuan Wang Yanyu Dou

Non-blocking I/O

4-Nitrophenol

Nanomaterials

10.1007/s11051-022-05615-z

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Highly Thermally Conductive and Structurally Ultra-Stable Graphitic Films with Seamless Heterointerfaces for Extreme Thermal Management

Nano-Micro Letters (2023)

Peijuan Zhang Yuanyuan Hao Hang Shi Jiahao Lu Yingjun Liu

Abstract Highly thermally conductive graphitic film (GF) materials have become a competitive solution for the thermal management of high-power electronic devices. However, their catastrophic structural failure under extreme alternating thermal/cold shock poses a significant challenge to reliability and safety. Here, we present the first investigation into the structural failure mechanism of GF during cyclic liquid nitrogen shocks (LNS), which reveals a bubbling process characterized by “permeation-diffusion-deformation” phenomenon. To overcome this long-standing structural weakness, a novel metal-nanoarmor strategy is proposed to construct a Cu-modified graphitic film (GF@Cu) with seamless heterointerface. This well-designed interface ensures superior structural stability for GF@Cu after hundreds of LNS cycles from 77 to 300 K. Moreover, GF@Cu maintains high thermal conductivity up to 1088 W m −1 K −1 with degradation of less than 5% even after 150 LNS cycles, superior to that of pure GF (50% degradation). Our work not only offers an opportunity to improve the robustness of graphitic films by the rational structural design but also facilitates the applications of thermally conductive carbon-based materials for future extreme thermal management in complex aerospace electronics.

Thermal shock

Thermal Stability

10.1007/s40820-023-01277-1

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Citations (13)