Article
Chemistry, Multidisciplinary
Ju-Hwan Kim, Seok-Hwi Kim, Byung-Joo Kim, Hye-Min Lee
Summary: The correlation between oxygen functional groups (OFGs) in activated carbon (AC) and their electrochemical characteristics was investigated. Heat treatment in hydrogen gas was found to improve the electrochemical performance of electric double-layer capacitors (EDLCs) without destroying the pore characteristics of AC.
Article
Polymer Science
Rui Yang, Yuting Wang, Boran Hao, Kan Zhang
Summary: Two novel benzoxazine monomers, oHMTI-a and oHMTI-pn, were obtained via modified Mannich condensation, with oHMTI-pn showing unique polymerization characteristics at lower temperatures. The resulting polybenzoxazines derived from oHMTI-pn exhibited high thermal stability and excellent flame retardancy, highlighting the potential for practical applications in the future.
HIGH PERFORMANCE POLYMERS
(2021)
Article
Chemistry, Multidisciplinary
Yongjun Lim, Seung-hyun Noh, Tae-Hyun Shin, Jung-uk Lee, Dominik Lungerich, Jae-Hyun Lee, Jinwoo Cheon
Summary: A single nanoparticle coating method is reported to form 1 nm polymeric shells with various chemical functional groups and surface charges. Nanosecond thermal energy pulses triggered polymerization in the region only a few nanometers from the surface of magnetic nanoparticles under exposure to alternating magnetic field. Modular coatings with different functional groups and surface charges can be achieved by selecting appropriate monomers.
Article
Chemistry, Inorganic & Nuclear
Guodong Xie, Jiayong Si, Guihua Li, Gemei Cai
Summary: In this study, a new borophosphate phosphor was prepared using a chemical cosubstitution strategy, which achieved tunable white-light emission. By incorporating the phosphor into a phosphor-converted white-light-emitting diode, a lighting device with high color temperature and desirable chromaticity coordinates was successfully fabricated.
INORGANIC CHEMISTRY
(2022)
Article
Chemistry, Physical
Ningning Yin, Jinhuan Zhong, Huayu Tian, Zenan Zhou, Weijun Ying, Jinfeng Dai, Wenzhu Li, Wenbiao Zhang
Summary: A P-/N-containing bamboo-activated carbon was synthesized and loaded in a PLA matrix to prepare composites. The characterization and mechanical strength study showed improvements in material properties. Thermogravimetric analysis and cone calorimeter measurements confirmed the enhancement of flame retardancy.
Article
Agricultural Engineering
Hang Yang, Zimao Ding, Yunli Liu, Shici Zhang, Yilingyun Zou, Guoliang Bai, Yi Zhang, Shibin Xia
Summary: A biomass-derived carbon aerogel was prepared and used as an efficient metal-free and green carbon-based catalyst for degrading tetracycline using peroxymonosulfate activation. Control of the oxygen-containing functional group content and defect degree through carbonization temperature was found to be crucial for pollutant removal efficiency improvement. Under optimal conditions, 93% removal of tetracycline could be achieved within 90 minutes with the main activated reactive oxygen species identified as O-1(2).
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Environmental Sciences
Yuran Li, Yuting Lin, Junxiang Guo, Zhicheng Xu, Bin Wang, Tingyu Zhu
Summary: The study reveals that carbon consumption in activated carbon technology for flue gas purification primarily originates from the reaction of H2SO4 and C, as well as the thermal decomposition of oxygen-containing functional groups. Interestingly, carbon consumption does not increase as SO2 concentration rises. Additionally, in the cyclic adsorption-regeneration process, carbon consumption is significantly higher in the first cycle due to the decomposition of functional groups within the activated carbon itself.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Review
Materials Science, Multidisciplinary
Chunjuan Qiu, Lili Jiang, Yige Gao, Lizhi Sheng
Summary: The introduction of oxygen-containing functional groups in carbon materials can improve the specific capacity of supercapacitors, but the influence mechanism on the structure and physico-chemical properties of carbon-based electrode materials needs further exploration.
MATERIALS & DESIGN
(2023)
Article
Chemistry, Multidisciplinary
Sook Young Moon, Seung-Yeol Jeon, Sung-Hyun Lee, Anna Lee, Seung Min Kim
Summary: It was found that the types of oxygen function groups in ferrocene-derived catalyst precursors closely influence catalyst formation and nanotube growth. Hydroxyl groups (-OH) enhance the etching effect and prevent oxidation on the catalyst particle surfaces, while carbonyl groups (C=O) cause partial oxidation and carbon dissociation on the surface of the catalyst particles. The size and composition of catalyst particles affect both the nucleation of carbon nanotubes and their physical properties.
Article
Engineering, Environmental
Xue Yang, Haiqian Zhao, Zhibin Qu, Mingqi He, Ziyu Tang, Shiwei Lai, Zhonghua Wang
Summary: The distribution of oxygen-containing functional groups on the carbon surface affects the efficiency of Electro-Fenton treatment of high-concentration formaldehyde wastewater. Different oxygen-containing functional groups have different effects on the adsorption of formaldehyde, with some functional groups enhancing the adsorption of formaldehyde on the carbon surface.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Environmental Sciences
Qi Yu, Jingyi Feng, Jie Li, Anfei He, G. Daniel Sheng
Summary: The presence of surface oxygen-containing functional groups (OFGs) on carbonaceous materials influenced the adsorption capacity at different sites, with OFGs on mesoporous surfaces inhibiting adsorption while those on external surfaces promoting it. Multiple linear relationships were established between monolayer adsorption capacity and the amounts of OFGs at different sites. Factors such as compound properties and molecular polarity influenced the inhibition or promotion effects of OFGs on adsorption behavior.
Article
Engineering, Environmental
Choe Earn Choong, Kien Tiek Wong, Hyeseong Kim, Seok Byum Jang, So Yeon Yoon, In Wook Nah, Wooyul Kim, Sang-Hyoun Kim, Byong-Hun Jeon, Yeomin Yoon, Min Jang
Summary: The presence of oxygen vacancies in silicon oxycarbide contributes to the photocatalytic activity of Si-PSAC under UV irradiation, leading to improved performance and increased O-2(center dot-) production efficiency. Si-PSAC showed effective removal of dyes and endocrine-disrupting chemicals under UVA(365) irradiation, with a significantly extended lifespan.
Article
Materials Science, Multidisciplinary
Xing Zhou, Jingrui Deng, Changqing Fang, Wanqing Lei, Yonghua Song, Zisen Zhang, Zhigang Huang, Yan Li
Summary: This study prepared carbon nanotubes/polylactic acid composites using 3D printing method, and found that the orientation of CNTs affected the properties of the composites. The 3D printing process was beneficial for improving the electrical conductivity and mechanical properties of the composites.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Energy & Fuels
Hai Zhang, Huang Qin, Xin Wang, Yilin Pan, Ping He, Jiang Wu, Weidong Fan
Summary: Based on DFT and MLR studies, this work focuses on the properties and adsorption mechanism of oxygen-containing functional groups (OFGs) on activated carbons towards elemental mercury. The dominant OFGs identified are CO2-1, CO3-7, C2O-2, C2O2-9, and C2O3-24. The strongest adsorption is obtained when mercury is co-adsorbed by OFGs and substrate. A regression equation is successfully established to predict mercury adsorption energy. This theoretical work provides new insights for the development of mercury adsorbents with OFG synergy.
Article
Chemistry, Physical
Gao Li, Huanhuan Guo, Zeming Wang, Hong Bao, Guanhui Gao, Bingjie Hu, Lijie Ci, Liang Wang, Minghong Wu
Summary: The study designed and synthesized nitrogen-doped carbon nanosheets with abundant activate sites via a brief freeze-drying technology, optimizing the performance of oxygen reduction reaction. Experimental results demonstrate that N-CN-Fd exhibits comparable ORR performance to commercial Pt/C under alkaline conditions, along with higher stability and cycling performance in Li-O-2 battery.
Article
Engineering, Environmental
Wei Zheng, Zequn Yang, Wenqi Qu, Jianwei Huang, Weizhen He, Jianping Yang, Wanliang Yang, Mengkui Tian, Zhengyong Xu, Hailong Li
Summary: In this study, a feasible synthesis strategy based on mechanical ball-milling procedure was proposed to synthesize (001) surface exposed CuS with high Hg0 adsorption capacity. The controllable nucleus formation and favorable crystalline growth manner under mechanochemical condition resulted in well-structured CuS nanosheets containing abundant under-coordinated sulfur ligands, ensuring the adequate exposure of active sites. The CuS nanosheets showed exceptional Hg0 adsorption capacity and uptake rate, surpassing previous benchmark metal sulfides.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Zheng Zeng, Ma Juan Guan, Hongyu Chen, Xiang Xu, Ma Jianwu Zou, Ma Chongjie Zhang, Yankun Du, Liqing Li
Summary: The elimination of VOCs through catalytic oxidation is significant. This study proposes a synergistic capture-bonding superassembly strategy to obtain PtFe3-CeO2 catalyst with excellent performance in toluene oxidation, catalytic stability, and water resistance. XPS analysis, oxygen cycle experiment, hydrogen reduction experiment, and in-situ DRIFT experiment reveal two reaction pathways involving surface adsorbed oxygen and lattice oxygen.
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Engineering, Environmental
Pengcheng Wu, Huoerhute Yelemulati, Shanshan Zhu, Bowen Peng, Hailong Li, Hongyong Ye, Juan Hou, Keliang Wu, Zhiyong Liu
Summary: The construction of oxygen vacancies (Ovs) is an important approach to regulate the electronic structure and catalytic properties of semiconductor materials. In this study, a new method involving in situ B-doping and amorphous-crystalline junction was proposed for constructing riched Ovs to enhance photoelectrocatalytic water oxidation performance. The introduction of B-doping and amorphous-crystalline junction was confirmed to result in a substantial increase in Ovs concentration. DFT calculations and COMSOL simulations revealed that the electric field deviation could promote the charge separation of the composite, thereby improving the catalytic activity.
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Energy & Fuels
Lijian Leng, Junhui Zhou, Tanghao Li, Mikhail Vlaskin, Hao Zhan, Haoyi Peng, Huajun Huang, Hailong Li
Summary: This study provides an overview of the effects of biomass and HTL processing parameters on the distribution and transformation mechanisms of N-H during HTL of nitrogen-rich biomass. Factors such as biomass composition, HTL process parameters, and extraction conditions were found to influence the formation of N-H. Strategies for optimizing biomass feedstock, HTL process, and N-H analysis were proposed to promote the development in this area, with machine learning-aided prediction and regulation of N-H formation reactions showing promise.
Review
Chemistry, Multidisciplinary
Xuran Ji, Zhijie Shen, Wenping Xu, Shimiao Yao, Hairong Zhang, Lian Xiong, Hailong Li, Haijun Guo, Xuefang Chen, Xinde Chen
Summary: The physical and chemical properties of gold make it suitable for various industries. With the depletion of easily leachable ore, it becomes necessary to extract gold from other resources. Non-cyanide leaching methods have been developed as a safer alternative to cyanide leaching. Among these methods, ion exchange resins have been found to efficiently adsorb gold. This paper focuses on the research progress of using ion exchange resins to recover gold from non-cyanide leachates, discussing existing resin types, elution processes, limitations, and potential solutions.
KOREAN JOURNAL OF CHEMICAL ENGINEERING
(2023)
Review
Engineering, Environmental
Xiancheng Ma, Rongkui Su, Zheng Zeng, Liqing Li, Hanqing Wang, Shaobin Wang
Summary: Solar water evaporation is crucial for producing low-energy freshwater, and wood-based photothermal evaporators have attracted attention due to their advantages. This review summarized the benefits and recent progress of wood-based solar evaporators, and discussed their applications in seawater desalination, wastewater purification, and energy production. It also outlined the challenges and future research directions in this field.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Thermodynamics
Lijian Leng, Tanghao Li, Hao Zhan, Muhammad Rizwan, Weijin Zhang, Haoyi Peng, Zequn Yang, Hailong Li
Summary: Machine learning algorithms were used to predict and control the relative content of nitrogen heterocyclic compounds in bio-oil (NH_Oil) produced from biomass pyrolysis. The results showed that machine learning has significant potential in addressing this issue and guiding experimental studies.
Article
Engineering, Electrical & Electronic
Bing Liu, Jamilu T. Baraya, Shitian Zhang, Maoyan Wang, Samira Nemati, Mengxia Yu, Guiping Li, Jun Xu, Xiaochuan Zhang, Yu Liu, Hailong Li
Summary: A fast and efficient frequency-domain finite element method is developed to simulate propagation characteristics of VLF waves in the Earth-ionosphere waveguide structure during the transition period between day and night. The method is accelerated using GPU-based parallel LU factorization method. A approach for determining the waveguide structure with the VLF transmitter and receiver locations is presented. The revised IRI model shows excellent agreement with measured data, providing a promising way to research VLF electromagnetic properties and improve prediction accuracy for VLF navigation and communication.
INTERNATIONAL JOURNAL OF NUMERICAL MODELLING-ELECTRONIC NETWORKS DEVICES AND FIELDS
(2023)
Article
Computer Science, Artificial Intelligence
Junqi Wang, Hailong Li, Gang Qu, Kim M. Cecil, Jonathan R. Dillman, Nehal A. Parikh, Lili He
Summary: A dynamic weighted hypergraph convolutional network (dwHGCN) framework is proposed in this study to learn features from dynamic hypergraphs. The model improves the learning capability of brain functional connectome by assigning larger weights to hyperedges with higher discriminative power and enhances the interpretability of the model by identifying highly active interactions among ROIs shared by a common hyperedge. Experimental results demonstrate the superiority of this model in classification tasks using functional magnetic resonance imaging (fMRI) data.
MEDICAL IMAGE ANALYSIS
(2023)
Article
Green & Sustainable Science & Technology
Ruiqi Cheng, Peng Yuan, Hailong Li
Summary: This study investigates whether the reduction in pollution emissions from exporting is related to the stringency of environmental regulation. Using the two control zones policy in China as a natural experiment, the study finds that Chinese manufacturing firms can significantly reduce their SO2 emissions intensity through exporting, but only in the firms regulated by the two control zones policy. The study confirms for the first time that the abatement effect of exporting is driven by stringent environmental regulations. Further analysis reveals that the abatement effect is mainly achieved through firm investment in source control technologies.
ENVIRONMENT DEVELOPMENT AND SUSTAINABILITY
(2023)
Article
Energy & Fuels
Jianping Yang, Xiangying Lu, Fanyue Meng, Hailong Li
Summary: This study investigates the dissolution behavior of overhaul slag in a molten salt system through thermodynamic calculation and experiments, and proposes a synergistic disposal strategy by utilizing the waste as a raw material in the aluminum electrolysis process.
Article
Energy & Fuels
Jianping Yang, Xiaolei Zhu, Zejian Ai, Lijian Leng, Hailong Li
Summary: This study adopted a catalytic pyrolysis approach with the participation of CaO for the reclamation disposal of oily sludge. The results demonstrate that this approach not only improves the yield and quality of pyrolysis oil, but also reduces the emission and mobility of heavy metals.
Article
Energy & Fuels
Tong Li, Fanyue Meng, Jianping Yang, Hailong Li
Summary: The recycling of mercury from spent fluorescent lamps is essential to prevent mercury release into the environment. This study adopted distillation method to reclaim mercury from phosphor powder and found that vacuum distillation was favorable for converting oxidized mercury into elemental mercury. Furthermore, the properties of phosphor remained largely unchanged after distillation, ensuring simultaneous recycling of both phosphor and mercury.
Article
Energy & Fuels
Wei Zheng, Zequn Yang, Jiefeng Chen, Weizhen He, Ruiyang Qin, Hongxiao Zu, Wenqi Qu, Jianping Yang, Lijian Leng, Hailong Li
Summary: Ti3C2 MXene/Cu2Se sorbent synthesized via a Lewis acid etching route combined with room-temperature selenization pathway shows excellent Hg0 adsorption performance, with higher adsorption capacity and uptake rate compared to other metal selenides. It also maintains outstanding adsorption performance under high temperature and is applicable to various fuel gas situations.
Article
Environmental Sciences
Yanzhu Chen, Zheng Zeng, Dongyang Liu, Jing Zhang, Yang Guo, Jianwu Zou, Juan Guan, Xiang Xu, Liqing Li
Summary: In this study, non-crystalline solid solution structured Ce-Mn co-oxide nanofibers were creatively prepared by adjusting the Ce/Mn molar ratios. The synthesized nanofibers displayed outstanding low-temperature toluene oxidation activity due to their large specific surface area and high adsorbed oxygen content. The synergistic effect between the non-crystalline structure and active oxygen species greatly improved the catalytic performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
