Rong Sun

Shenzhen Institutes of Advanced Technology

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Ching‐Ping Wong

Georgia Institute of Technology

Xian‐Zhu Fu

Shenzhen University

Pengli Zhu

University of Science and Technology of China

Chongguo Tian

Yantai Institute of Coastal Zone Research

Jun Li

Guangzhou Institute of Geochemistry

Gan Zhang

Guangzhou Institute of Geochemistry

Xiaoliang Zeng

Shenzhen Institutes of Advanced Technology

Jianbin Xu

Chinese University of Hong Kong

Jin‐Qi Xie

University of South China

Shuhui Yu

Shenzhen Institutes of Advanced Technology

Cooperative Institutions

Chinese Academy of Sciences

168

Shenzhen Institutes of Advanced Technology

University of Chinese Academy of Sciences

University of Science and Technology of China

Shenzhen University

Guangzhou Institute of Geochemistry

Shanghai Jiao Tong University

Sichuan University

Yunnan Normal University

Harbin Institute of Technology

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Silver Nanoparticle-Deposited Boron Nitride Nanosheets as Fillers for Polymeric Composites with High Thermal Conductivity

Scientific Reports (2016)

Fangfang Wang Xiaoliang Zeng Yimin Yao Rong Sun Jianbin Xu

Abstract Polymer composites with high thermal conductivity have recently attracted much attention, along with the rapid development of the electronic devices toward higher speed and performance. However, a common method to enhance polymer thermal conductivity through an addition of high thermally conductive fillers usually cannot provide an expected value, especially for composites requiring electrical insulation. Here, we show that polymeric composites with silver nanoparticle-deposited boron nitride nanosheets as fillers could effectively enhance the thermal conductivity of polymer, thanks to the bridging connections of silver nanoparticles among boron nitride nanosheets. The thermal conductivity of the composite is significantly increased from 1.63 W/m-K for the composite filled with the silver nanoparticle-deposited boron nitride nanosheets to 3.06 W/m-K at the boron nitride nanosheets loading of 25.1 vol %. In addition, the electrically insulating properties of the composite are well preserved. Fitting the measured thermal conductivity of epoxy composite with one physical model indicates that the composite with silver nanoparticle-deposited boron nitride nanosheets outperforms the one with boron nitride nanosheets, owning to the lower thermal contact resistance among boron nitride nanosheets’ interfaces. The finding sheds new light on enhancement of thermal conductivity of the polymeric composites which concurrently require the electrical insulation.

Silver nanoparticle

10.1038/srep19394

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Citations (242)

Tribological characteristics of graphene as lithium grease additive

China Petroleum Processing & Petrochemical Technology (2017)

Jing Wang Xiaochuan Guo Yan He Mingjun Jiang Guo Wan-qing

Grease

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Low‐molecular‐weight organic acids enhance desorption of polycyclic aromatic hydrocarbons from soil

European Journal of Soil Science (2015)

Wanting Ling Rong Sun Xiumei Gao Ren‐kou Xu Hui Li

Summary The impact of low‐molecular‐weight organic acids ( LMWOAs ) on desorption of phenanthrene and pyrene as representative polycyclic aromatic hydrocarbons ( PAHs ) from a contaminated soil was investigated by using a laboratory batch experiment. Three LMWOAs were used in this study and were citric, oxalic and malic acids. The LMWOAs in aqueous solution promoted desorption of PAHs from soil significantly and demonstrated an increasing trend as the concentration of LMWOAs increased. When compared with desorption of phenanthrene and pyrene from soil to water, the addition of LMWOAs enhanced desorption of test PAHs by up to 285 and 299%, respectively. Among the three LMWOAs studied, citric acid demonstrated the greatest efficiency in promoting PAH desorption from soil. Solutions of LMWOA continuously promoted PAH removal from soil during the multiple cycles of desorption. Overall, the experimental results suggest that LMWOAs in aqueous solution could disrupt soil organic matter ( SOM )–metal cation–mineral linkages in soils, resulting in the release of SOM from soil and simultaneous increase of dissolved organic carbon ( DOC ) in solution. The loss of SOM from soil and increase of DOC in solution are responsible for the enhanced PAH desorption from soil. The positive correlation between DOC in solution and desorbed PAHs from soil suggests that the loss of SOM from soil plays an important role in LMWOA ‐enhanced desorption of PAHs from soil.

Polycyclic aromatic hydrocarbon

10.1111/ejss.12227

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Citations (61)

Evaluation of Ecological Sensitivity in Mountain Area Based on Spatial Analysis——A Case Study of Wanyuan City in Sichuan Province

Journal of Mountain Science (2008)

Rong Sun

Elevation (ballistics)

Land Cover

Disaster area

Residential area

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Citations (11)

Through-plane assembly of carbon fibers into 3D skeleton achieving enhanced thermal conductivity of a thermal interface material

Chemical Engineering Journal (2019)

Jiake Ma Tianyu Shang Linlin Ren Yimin Yao Tao Zhang

Thermal grease

Carbon fibers

10.1016/j.cej.2019.122550

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Citations (283)

Molecular Dynamics and Light Absorption Properties of Atmospheric Dissolved Organic Matter

Environmental Science & Technology (2021)

Hongxing Jiang Jun Li Rong Sun Chongguo Tian Jiao Tang

The light-absorbing organic aerosol referred to as brown carbon (BrC) affects the global radiative balance. The linkages between its molecular composition and light absorption properties and how environmental factors influence BrC composition are not well understood. In this study, atmospheric dissolved organic matter (ADOM) in 55 aerosol samples from Guangzhou was characterized using Fourier transform ion cyclotron resonance mass spectrometry and light absorption measurements. The abundant components in ADOM were aliphatics and peptide-likes (in structure), or nitrogen- and sulfur-containing compounds (in elemental composition). The light absorption properties of ADOM were positively correlated with the levels of unsaturated and aromatic structures. Particularly, 17 nitrogen-containing species, which are identified by a random forest, characterized the variation of BrC absorption well. Aggregated boosted tree model and nonmetric multidimensional scaling analysis show that the BrC composition was largely driven by meteorological conditions and anthropogenic activities, among which biomass burning (BB) and OH radical were the two important factors. BrC compounds often accumulate with elevated BB emissions and related secondary processes, whereas the photolysis/photooxidation of BrC usually occurs under high solar radiance/•OH concentration. This study first illuminated how environmental factors influence BrC at the molecular level and provided clues for the molecular-level research of BrC in the future.

10.1021/acs.est.1c01770

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Citations (96)

Regional characteristics of atmospheric δ34S-SO42− over three parts of Asia monitored by quartz wool-based passive samplers

The Science of The Total Environment (2021)

Xiao Wang Jun Li Rong Sun Hongxing Jiang Zheng Zong

δ34S

10.1016/j.scitotenv.2021.146107

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Citations (12)

Emerging low-density polyethylene/paraffin wax/aluminum composite as a form-stable phase change thermal interface material

International Journal of Minerals Metallurgy and Materials (2023)