Article
Electrochemistry
Rong Yu, Fuxin Liu, Nan He, Lingling Han, Xiuhui Liu
Summary: In this study, a non-enzymatic H2O2 electrochemical sensor based on silver nanoparticles and carbon nanospheres was successfully constructed. The sensor exhibited excellent electrocatalytic performance and anti-interference properties. It showed a wide linear range and low detection limit for hydrogen peroxide, and was successfully applied in the detection of hydrogen peroxide in real samples.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Analytical
Martin Wortmann, Waldemar Keil, Bennet Brockhagen, Jan Biedinger, Michael Westphal, Christian Weinberger, Elise Diestelhorst, Wiebke Hachmann, Yanjing Zhao, Michael Tiemann, Guenter Reiss, Bruno Huesgen, Claudia Schmidt, Klaus Sattler, Natalie Frese
Summary: The study investigated the effects of temperature changes during pyrolysis on the chemical composition, morphology, and crystallinity of hydrochar, revealing the formation of oxygen-rich nanoclusters below 700 degrees Celsius which decompose below 750 degrees Celsius, leaving behind uniformly sized pores that result in a surface area of up to 480 m2/g.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Materials Science, Ceramics
Yi Xin, Zhaoqi Niu, Shuai Shen, Xiaoyan Ma, Fang Chen, Luyao Wang, Beixi Chen, Chengzhi Wang, Chengshuang Zhang, Xiao Hou
Summary: A novel B-Si-Zr hybridized ceramicizable resin(BSZ-PR) was successfully fabricated by chemical reaction of boric acid, zirconium hydroxyl-containing polyhedral oligomeric silsesquioxane(Zr-POSS) and phenolic. The incorporation of boric acid and Zr-POSS improved the thermal stability of the resin effectively, and the flexural strength of carbon fiber/BSZ-PR and high silica fiber/BSZ-PR composites were increased significantly. Formation of ceramic structures such as SiO2, ZrO2 and SiC at high temperatures and extreme ablative conditions from BSZ-PR and its composites may be the key to the improved thermal, ablative properties.
CERAMICS INTERNATIONAL
(2023)
Article
Engineering, Chemical
Yisen Huang, Haoruo Zhang, Xueqin Zhang, Liwei Yan, Youquan Ling, Huawei Zou, Yang Chen, Mei Liang
Summary: In this study, boron-phenolic resin (BPR) composites were modified with various loadings of mesophase pitch (MP) to improve their mechanical performance, ablation resistance, and thermal insulation properties. The introduction of MP effectively prevented the growth of microcracks and increased the proportion of micropores and graphitic structures in the residual char, resulting in improved ablation and insulation properties of the composites.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Physical
Fang Zhang, Shuang Zong, Yue Zhang, Haijun Lv, Xinying Liu, Juan Du, Aibing Chen
Summary: By utilizing mesoporous silica template to prepare N-doped HCS, direct carbon formation can be achieved, simplifying the preparation process. The thickness of the HCS shell, morphology, and surface properties can be adjusted, leading to high electrochemical performance as an active electrode material in supercapacitors.
JOURNAL OF POWER SOURCES
(2021)
Article
Chemistry, Physical
Xiao-Fei Yu, Wen-Cui Li, You-Ren Hu, Cheng-Yu Ye, An-Hui Lu
Summary: A new synthesis approach for internal gridded hollow carbon spheres is proposed in this study, which involves constructing a silica fence around solid polymer spheres to create the desired structure. These carbon spheres show good performance as sulfur hosts for Li-S batteries.
Article
Chemistry, Multidisciplinary
Qianyi Tao, Zhifeng Zhu, Sunjie Ye, Gaojian Lin, Hui Chen, Yingfeng Tu, Guanghui Bai, Lu Zhang, Xiaoming Yang
Summary: The unique carbon nano-architectures designed in this study improve the performance of energy storage devices.
Article
Polymer Science
Han Li, Nasidan Wang, Xuefei Han, Haoran Yuan, Jiang Xie
Summary: The study investigates the thermal degradation mechanism and kinetics of carbon fiber epoxy resin used in aerostructures, analyzing the process under different environments and establishing a kinetic model. Results show differences in thermal degradation steps under inert atmosphere and air atmosphere, providing fundamental support for the application of carbon fiber epoxy resin in the aircraft industry.
Article
Thermodynamics
Di Zhu, Zhixiong Huang, Minxian Shi, Yan Qin, Zhenyue Zou, Zongyi Deng
Summary: In this study, a model-free method was used to investigate the kinetic models of BPR and ZrSi2/B4C-Ph composite. The thermal stability, chemical reaction, and structure evolution of the composite during pyrolysis were examined using various analytical techniques. The results revealed that the pyrolysis of BPR occurs in three consecutive and overlapping stages, and the kinetic parameters of each stage were determined. The high char yield of ZrSi2/B4C-Ph composite is mainly due to the reaction between ZrSi2 and B4C with gases released during BPR pyrolysis, resulting in the formation of solid phases.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2023)
Article
Engineering, Environmental
Meng Cheng, Hao Jiang, Zhikun Wang, Chunling Li, Shuangqing Sun, Songqing Hu
Summary: The development of nanocatalytic anticorrosion based on silica-coated nitrogen-enriched hollow carbon spheres (NHCs@mSiO(2)) shows promising potential for prolonging coating lifetime and providing long-term protection of metals. The integration of NHCs@mSiO(2) spheres into epoxy coatings demonstrates uniform distribution and efficient oxygen reduction ability, resulting in effective corrosion prevention by depleting oxygen through catalytic pathways. This innovative approach may pave the way for the future development of smart coatings with active corrosion resistance.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Engineering, Chemical
Shujuan Wang, Lu Wang, Ya'nan Wang, Yuefeng Li, Wei Fan, Xinli Jing
Summary: This study presents an efficient strategy for the preparation of boron-doped phenolic porous carbon through in situ pyrolysis, which shows high catalytic activity for the conversion of biomass materials into biofuels in ethanol.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2022)
Article
Chemistry, Applied
Jie Li, Zhenheng Xu, Lixiong Zhang, Liang Yu
Summary: Uniform carbon microspheres with adjustable mesopores and high surface area were successfully prepared using solvent extraction method in a microfluidic device. Colloidal silica played a role as an assistant in this process.
MICROPOROUS AND MESOPOROUS MATERIALS
(2022)
Article
Chemistry, Analytical
Fangjuan Zheng, Kun Wan, Farong Huang, Bo Niu, Youan Shi, Dong Wei, Yayun Zhang, Donghui Long
Summary: This study investigates the pyrolysis process of silicon-containing arylacetylene resin (PSA) using experiments and simulations. The results show that PSA has excellent heat resistance and thermal stability. The activation energy obtained from experiments and simulations confirms the thermochemical stability of cured PSA. Additionally, decreasing the number of side phenyl groups in PSA improves its thermal stability.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2022)
Article
Chemistry, Physical
Chunhua Zhao, Shi Chen, Nan Sun, Wenbin Jiang, Wenlei Cai, Chongjun Zhao
Summary: This study successfully prepared activated carbon electrodes with abundant pores and excellent electrochemical performance by using Bisphenol A epoxy resin as the carbon source and air atmosphere during the carbonization process.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Shijun Huang, Dong-Dong Ma, Xuesong Wang, Yuande Shi, Ruizhi Xun, Huadan Chen, Huaimin Guan, Yuejin Tong
Summary: A space-sacrificed pyrolysis strategy was used to prepare boron-doped carbon spheres (B-CSs) for potential electrode material applications, with high surface area and boron content. The sizes, specific surface areas, and boron contents of B-CSs can be easily regulated by varying experimental parameters, with the optimal sample having a boron content of 1.38 at%, surface area of 560 m(2) g(-1), and specific capacitance of 235F g(-1). This work provides a flexible and extensible preparation technique for B-CSs in electrochemical applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Analytical
Guanshuai Zhang, Shanjian Liu, Dongmei Bi, Zhisen He, Jia Liu, Yinjiao Liu
Summary: Hydrogen peroxide pretreatment was applied for fast pyrolysis of corn stalks, and it was found that the pretreatment effectively promoted lignin depolymerization and decreased the reaction activation energy. The pretreatment also increased the cellulose content and removed alkali and alkaline earth metals from the biomass. The pH of the hydrogen peroxide solution affected the removal of lignin and ash by the pretreatment, and the composition of bio-oil changed significantly, with a significant increase in the relative content of levoglucosan after pretreatment.
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
(2024)
