Article
Chemistry, Physical
Li-Yuan Zhang, Yan-Lin Han, Jin-Ju Yang, Sheng-Lian Deng, Bi-Yu Wang
Summary: Carbon quantum dots (CQDs) were prepared using citric acid as a carbon source, and then compounded with layered mesoporous titanium dioxide (LM-TiO2) to form composites. The addition of CQDs greatly enhanced the light absorption intensity of LM-TiO2 in the ultraviolet range and improved the degradation rate of organic pollutants compared to simple TiO2 and LM-TiO2.
APPLIED SURFACE SCIENCE
(2021)
Article
Materials Science, Multidisciplinary
Samaneh Farjadfar, Mehran Ghiaci, Sergei A. Kulinch, Wilfried Wunderlich
Summary: This study reports on a low-cost synthesis of nanocomposites consisting of carbon dots trapped in a matrix of titanium dioxide. The prepared photocatalysts showed excellent performance in degrading organic contaminants under visible light irradiation. The materials also exhibited good thermal and chemical stability. The study provides an important step towards the rational design of highly active photocatalysts.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Engineering, Environmental
Hao Yuan, Haoran Sun, Yuxing Shi, Jiaxuan Wang, Ang Bian, Youyou Hu, Feng Guo, Weilong Shi, Xin Du, Zhenhui Kang
Summary: Researchers constructed a g-C3N4 system doped with carbon and loaded with carbon dots (CDs) to investigate the effect of trap states, revealing a 4-fold increase in H2 evolution efficiency compared to ordinary g-C3N4 during photocatalysis. The study provides insight into interfacial charge transfer and transport dynamics, which can guide the design and development of highly active carbon-based composite photocatalysts.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Xuefeng Zhang, Jiayu Ouyang, Xinmiao Qi, Ze Li, Qiang Ma, Xin Guo, Shanshan Jia
Summary: A photocatalytic adsorbent, CCCZ, was synthesized for effective removal of hexavalent chromium contamination. CCCZ exhibited exceptional adsorption capacity for Cr(VI), surpassing that of original chitosan gel bead by a factor of 3.4. Additionally, CCCZ showed efficient regeneration capacity and long-term stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Biochemistry & Molecular Biology
Lingyun Hao, Yuanyuan Yu, Zhanming Liang, Hewei Hou, Xi Liu, Changzhou Chen, Douyong Min
Summary: In this study, nitrogen-doped carbon quantum dots (NCQDs) with different properties were prepared by using kraft lignin as the raw material and EDA as a nitrogen dopant. The amount of EDA added affected the carbonization reaction and surface state of NCQDs. The results showed that the surface defects of NCQDs increased, and the fluorescence intensity and stability improved. NCQDs also exhibited high photo-catalytic activity in degrading methylene blue under simulated sunlight irradiation.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Nanoscience & Nanotechnology
Yanxian Zeng, Qijie Li, Xiaochun Niu, Suying Wang, Andrew T. Smith, Mingtao Zheng, Luyi Sun, Weixing Wang
Summary: Photoluminescent mesoporous silica with high surface area and pore diameter was successfully synthesized using a co-templating method, with the photoluminescence originating from the trapped carbon in the co-templates.
ADVANCED COMPOSITES AND HYBRID MATERIALS
(2021)
Review
Chemistry, Multidisciplinary
Yue Yu, Qingsen Zeng, Songyuan Tao, Chunlei Xia, Chongming Liu, Pengyuan Liu, Bai Yang
Summary: Seeking clean energy as an alternative to traditional fossil fuels is necessary for sustainable development. Carbon dots, a type of carbon nanomaterials, are being extensively researched for their potential as metal-free photocatalysts due to their strong UV-vis absorption, tunable energy levels, excellent charge transfer ability, stability, and low toxicity. This review systematically summarizes the classification, microstructures, synthetic methods, optical and photoelectrical properties of carbon dots. The recent advances in carbon dots-based photoinduced reactions, including photodegradation, photocatalytic hydrogen generation, CO2 conversion, N-2 fixation, and photochemical synthesis, are also highlighted, providing deep insights into their roles in various systems.
Review
Chemistry, Multidisciplinary
Lin Cui, Xin Ren, Mengtao Sun, Haiyan Liu, Lixin Xia
Summary: Carbon dots (CDs) are emerging as a promising carbon-based nanomaterial with unique electronic and optical properties, making them attractive for biomedical and photocatalytic applications. The CDs possess low toxicity, good biocompatibility, excellent photostability, tunable fluorescence, outstanding efficient up-converted photoluminescence behavior, and photo-induced electron transfer ability, which enhances their potential in various fields.
Article
Chemistry, Multidisciplinary
Beatrice Bartolomei, Vasco Corti, Maurizio Prato
Summary: In this study, a microwave synthesis method was used to produce a new type of chiral Carbon Nanodots (CNDs), which showed interesting absorption and emission properties and exhibited enantioselective organocatalytic reactions. The CNDs also displayed redox and light-absorbing properties suitable for driving photochemical processes. The CNDs were used as catalysts to promote cross-dehydrogenative coupling, demonstrating their potential to replace molecular catalysts in multiple reactions.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Jinpeng Bai, Nan Xiao, Yuwei Wang, Hongqiang Li, Chang Liu, Jian Xiao, Yibo Wei, Zhen Guo, Jieshan Qiu
Summary: Carbon dots (CDs) with tunable size were synthesized from coal tar pitch using a hydrothermal method with NaOH as additive. The obtained CDs demonstrated high crystallinity and the size could be regulated by adjusting the amount of NaOH added. Increasing the size of the CDs from 1.9 to 5.8 nm resulted in a 70% improvement in the solar-to-hydrogen efficiency when Pt was supported on the CDs.
Review
Chemistry, Multidisciplinary
Lin Ai, Run Shi, Jie Yang, Kan Zhang, Tierui Zhang, Siyu Lu
Summary: This review focuses on the potential applications of heterogeneous photocatalysts composed of g-C3N4 and CDs in resolving tough energy and environmental issues through an ecologically sustainable manner. It discusses various synthetic methods, strategies for enhanced performance, and applications in hydrogen generation, carbon dioxide reduction, and organic pollutants degradation, providing guidance for further powerful combination of g-C3N4 and CDs in photocatalysis.
Article
Engineering, Environmental
Ozlem Tuna, Esra Bilgin Simsek
Summary: In this study, a novel ferrite perovskite material CeFeO3 was designed with nitrogen-doped carbon quantum dots (NCQDs) for efficient degradation of ciprofloxacin (CPX) in a peroxymonosulfate (PMS) activated photocatalytic system. The effect of NCQDs addition in the PMS-activated system was examined through characterization and photocatalytic tests. The CeFeO3 @NCQDs heterojunction showed superior catalytic performance (92.5%) compared to bare CeFeO3 (32.0%). XPS analysis revealed the formation of new oxygen-rich bonds in the CeFeO3 @NCQDs sample, providing new reaction sites. PL technique showed higher carrier separation efficiency in the composite due to excellent electron transfer property of NCQDs. The change in band energy potentials improved the oxidation ability, resulting in increased degradation rate. The CeFeO3 @NCQDs/Vis/PMS system showed promise for practical wastewater treatment applications.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Review
Engineering, Environmental
Feixia Zhao, Xueying Li, Mingxing Zuo, Yunshan Liang, Pufeng Qin, Hui Wang, Zhibin Wu, Lin Luo, Chao Liu, Lijian Leng
Summary: In this paper, the precursor materials, physical and chemical properties, as well as the preparation methods of CQDs decorated photocatalysts are discussed. The effects of reaction conditions, precursor and reaction medium on the structural characteristics of CQDs decorated photocatalysts are summarized. The applications and recent progress of CQDs decorated photocatalysts, including organic pollutants degradation, hydrogen production, and carbon dioxide conversion, are reviewed. The challenges and suggestions for future research of CQDs decorated photocatalysts are also proposed.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Chemical
Chaoqun Li, Ziqing Zhao, Shaozhu Fu, Xingyue Wang, Yuhan Ma, Shuangshi Dong
Summary: This study successfully prepared a visible-light-responsive catalyst, carbon quantum dots anchored hollow microsphere Bi2WO6 (CQDs/HBWO), which showed high catalytic activity for the photocatalytic degradation of TCH. The presence of carbon quantum dots significantly improved the photoreduction efficiency of Cr (VI) in the bipollutant system by acting as a photogenerated hole scavenger, with h+, center dot O2 and center dot OH identified as the main reactive species.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
Yoonsang Park, Hoang Tran Bui, Yurim Sohn, Cheolwoo Park, Bupmo Kim, Taehyung Lee, Daegun Kim, Dajin Lee, Kilwon Cho, Hyo Won Kim, Woosung Kwon, Wooyul Kim
Summary: In this study, nanocomposites composed of graphite-derived carbon dots (GCDs) and TiO2 were shown to have ligand-to-metal charge transfer (LMCT) activity across the entire visible-light spectrum. The effect of GCDs on the photocatalytic activity of TiO2 was investigated through the production of hydrogen peroxide and the degradation of pollutants. The research demonstrates the formation of an LMCT band in TiO2/GCD nanocomposites and provides a novel method for expanding the light-absorption spectrum of photocatalysts.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Physical
Yuexin Liu, Yanzhong Wang, Huiqi Wang, Peihua Zhao, Hua Hou, Li Guo
APPLIED SURFACE SCIENCE
(2019)
Article
Engineering, Environmental
Qing Chang, Wenliang Yang, Fu Li, Chaorui Xue, Huiqi Wang, Ning Li, Hantao Liu, Jinlong Yang, Shengliang Hu
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Engineering, Environmental
Fu Li, Ning Li, Chaorui Xue, Huiqi Wang, Qing Chang, Hantao Liu, Jinlong Yang, Shengliang Hu
CHEMICAL ENGINEERING JOURNAL
(2020)
Article
Materials Science, Multidisciplinary
Can-Liang Ma, Zhen-Hui Hu, Ning-Jing Song, Yun Zhao, Yan-Zhen Liu, Hui-Qi Wang
Summary: A novel method has been proposed to synthesize microsphere graphite materials with excellent electrochemical properties and application potential.
Article
Electrochemistry
Weifeng Jing, Mei Wang, Ying Li, Hai-Ru Li, Huinian Zhang, Shengliang Hu, Huiqi Wang, Yan-Bing He
Summary: The WDHCs material demonstrates high-capacity and cycling stability for sodium storage through its well-constructed pore structure, leading to excellent reversible capacity and rate performance.
ELECTROCHIMICA ACTA
(2021)
Article
Chemistry, Physical
Li Gou, Weifeng Jing, Ying Li, Mei Wang, Shengliang Hu, Huiqi Wang, Yan-Bing He
Summary: This study developed a 3D architecture composed of silicon (Si) nanoparticles coupled with MXene layers as an anode material for sodium-ion batteries (SIBs). By combining silicon with MXene and hard carbon, the material demonstrated enhanced capacity, cycling stability, and rate performance.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Mei Wang, Huifang Zhao, Yi Long, Wenjuan Zhang, Liyong Wang, Diaoyu Zhou, Huiqi Wang, Xiaoguang Wang
Summary: This study demonstrates a facile method for preparing multiphase phosphide catalysts with tunable electronic structure and moderate free energy of adsorbed intermediates, which exhibit speedy activity in electrocatalysis. The presence of phosphorus vacancies enhances the catalyst's hierarchical structure and conductivity, leading to excellent activity and stability in hydrogen evolution reactions.
DALTON TRANSACTIONS
(2022)
Article
Materials Science, Multidisciplinary
Hui-Qi Wang, Ya-Xin Zhao, Li Gou, Li-Yong Wang, Mei Wang, Ying Li, Sheng-Liang Hu
Summary: This study presents a densely packed Si/MXene composite microspheres as an anode material for high-performance sodium-ion batteries. The synergistic effects between activated Si nanoparticles and conductive MXene microspheres contribute to the enhanced sodium storage performance, with high capacity, long cycling stability, and remarkable rate capability. The superior pseudocapacitive property, high electronic conductivity, and favorable sodium-ion adsorption and diffusion capability further confirm the fast sodium storage performance of this composite architecture.
Article
Chemistry, Multidisciplinary
Mei Wang, Yi Long, Huifang Zhao, Wenjuan Zhang, Liyong Wang, Ruifeng Dong, Hua Hou, Huiqi Wang, Xiaoguang Wang
Summary: A scalable dealloying strategy was proposed to fabricate highly efficient Al-NiCo2O4 catalyst, which exhibited excellent catalytic activities for oxygen reduction and evolution reactions. It showed promising performance as a cathode catalyst in rechargeable zinc-air batteries, with high capacity, competitive power density, and long cycling stability.
Article
Chemistry, Multidisciplinary
Ting Bi, Junzhe Zhang, Mei Wang, Liyong Wang, Jingpeng Chen, Shengliang Hu, Chenmeng Chen, Huiqi Wang
Summary: A facile method of synthesizing large size borophene without catalysts is reported in this study. The borophene sheets were deposited on nickel foam using an improved chemical vapor deposition process. This method has great potential for reserving green energy by borophene-based Li-ion batteries.
Article
Chemistry, Multidisciplinary
Huiqi Wang, Na Bai, Mei Wang, Liyong Wang, Ying Li, Jingpeng Chen, Shengliang Hu, Chenmeng Chen
Summary: In this study, novel BCxO3-x nanocages (BCNCs) for sodium-ion and potassium-ion storage promotion were prepared by in situ doping boron into carbon nanocages. The BCNCs exhibit excellent electrochemical stability and ultrahigh capability of sodium-ion/potassium-ion storage due to their hollow structure with thin walls and rich electron deficiencies. The electron deficiencies provide extra ion adsorption sites and increase the pseudocapacitive charge storage capacity, resulting in remarkable charge transfer between sodium/potassium and the substrate. This work may provide vital guidance for designing high-performance anode materials.
MATERIALS CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Huiqi Wang, Jiacheng Han, Mei Wang, Liyong Wang, Suping Jia, Honghong Cao, Shengliang Hu, Yan-Bing He
Summary: Crystalline boron quantum dots have been successfully synthesized through a hydrothermal approach and used in the fabrication of a memory device with polyvinyl pyrrolidone. The device exhibits bistable electrical switching behavior and good stability.
Article
Chemistry, Multidisciplinary
Huinian Zhang, Suping Jia, Xiaolin Shi, Ziyuan Li, Bin Liu, Ning Li, Ying Li, Shengliang Hu, Huiqi Wang
Summary: A single-iron-atom electrocatalyst embedded in N-doped carbon with active and robust five-coordinated Fe-N-5 moieties has been successfully synthesized through a simple synthetic approach, showing enhanced ORR activity in alkaline mediums and outperforming FeN4-C with four-coordinated Fe-N-4 moieties. The catalyst exhibits admirable half-wave potential of 0.84 V and demonstrates excellent ORR performance and stability in Zn-air batteries, surpassing the commercial Pt/C catalyst.
MATERIALS CHEMISTRY FRONTIERS
(2021)
Article
Materials Science, Multidisciplinary
Huiqi Wang, Duo An, Mei Wang, Liwen Sun, Ying Li, Hairu Li, Ning Li, Shengliang Hu, Yan-Bing He
Summary: By combining high-power sonication, chemical exfoliation, and a one-step chemical coupling strategy, crystalline borophene quantum dots with two-photo fluorescence and their derivative boron nanospheres with hydrazine hydrate-dependent photoluminescence properties were successfully prepared. This work demonstrates the potential of B-rich nanomaterials for practical lighting applications.
MATERIALS ADVANCES
(2021)
Article
Materials Science, Multidisciplinary
Huiqi Wang, Li Gou, Weifeng Jing, Duo An, Ying Li, Mei Wang, Ning Li, Shengliang Hu, Yan-Bing He
MATERIALS ADVANCES
(2020)
Article
Chemistry, Physical
Jie Sheng, Jingshan He, Dun Ma, Yuanbo Wang, Wu Shao, Tian Ding, Ronghao Cen, Jingwen He, Zhihao Deng, Wenjun Wu
Summary: This study presents an innovative approach to improve the photovoltaic conversion characteristics and stability of perovskite solar cells through carbon electrode interface modification. By in-situ polymerization and carbonization on the surface of nano-graphite, a dendritic structure carbon electrode is formed, reducing the work function and aligning the energy levels with perovskite. This leads to improved charge and hole collection efficiency, resulting in increased photovoltaic conversion efficiency. Furthermore, the modified carbon electrode-based perovskite solar cells exhibit exceptional stability, maintaining high efficiency even without encapsulation.
Article
Chemistry, Physical
Guodong Shi, Jian Song, Xiaoxiao Tian, Tongtong Liu, Zhanjun Wu
Summary: This study demonstrates the improvement of mechanical properties and reduction of coefficient of thermal expansion (CTE) in graphene oxide (GO)/epoxy (EP) nanocomposites by enhancing the interface between GO and EP through functionalization and incorporating rigid-flexible interphases. The results reveal that the SiO2-PEA-GO hybrid exhibits better strengthening and toughening effects, as well as lower CTE, compared to the PEA-GO hybrid due to the presence of rigid-flexible interfaces with higher bonding strength and better energy dissipation mechanisms. Additionally, the nanocomposites with longer polyetheramine (PEA) molecules in the rigid-flexible interphases demonstrate higher strength and toughness, while maintaining a lower CTE. This work provides a promising strategy for constructing adjustable flexible-rigid interfacial structures and offers potential in developing GO/EP nanocomposites with high mechanical properties and low CTE.
Article
Chemistry, Physical
Rafal Janus, Sebastian Jarczewski, Jacek Jagiello, Piotr Natkanski, Mariusz Wadrzyk, Marek Lewandowski, Marek Michalik, Piotr Kustrowski
Summary: In this study, a facile procedure for the synthesis of CMK-1 and CMK-2 carbon replicas was developed. The method utilizes basic laboratory equipment and a renewable carbon source, and operates under mild conditions. The resulting carbon mesostructures exhibit exquisite replication fidelity and structural homogeneity, making them suitable for applications in various fields.
Article
Chemistry, Physical
Anqi Wang, Connor J. MacRobbie, Alex Baranovsky, Jean-Pierre Hickey, John Z. Wen
Summary: In this study, a novel polymer-free nanothermite aerogel with a wide range of nanoparticle loading was fabricated via a new additive manufacturing process. The SEM images showed a unique porous structure formed by extra thin rGO sheets, wrapping individual nanothermite clusters. The DSC-TGA results and high-speed combustion videos confirmed the enhanced energetic performance of the printed specimen.
Article
Chemistry, Physical
Wanze Wu, Misheng Zhao, Shiwei Miao, Xiaoyan Li, Yongzhong Wu, Xiao Gong, Hangxiang Wang
Summary: Superhydrophobic solar-driven interfacial evaporator is an energy-efficient technology for seawater desalination, which is easily fabricated using robust photothermal superhydrophobic coating and substrate. The created bifunctional coating on the melamine sponge substrate shows stable and highly efficient photothermal and superhydrophobic performance for seawater desalination. This superhydrophobic solar-driven interfacial evaporator is expected to have wide applications in seawater desalination.
Article
Chemistry, Physical
Zichen Xiang, Zhi Song, Tiansheng Wang, Menghang Feng, Yijing Zhao, Qitu Zhang, Yi Hou, Lixi Wang
Summary: This study presents a co-electrospinning synthesis strategy to fabricate lightweight and porous Co@C composite nanofibres with wideband microwave attenuation capacity. The addition of MOF-derived Co additives enhances the low-frequency absorption performance.
Article
Chemistry, Physical
J. Snow, C. Olson, E. Torres, K. Shirley, E. Cazalas
Summary: This study investigates the use of a perovskite-based graphene field effect transistor (P-GFET) device for X-ray detection. The sensitivity and responsivity of the device were found to be influenced by factors such as X-ray tube voltage, current, and source-drain voltage. Simulation experiments were conducted to determine the dose rate and energy incident on the device during irradiation.
Article
Chemistry, Physical
Zuzana Jankovska, Lenka Matejova, Jonas Tokarsky, Pavlina Peikertova, Milan Dopita, Karolina Gorzolkova, Dominika Habermannova, Michal Vastyl, Jakub Belik
Summary: This study provides new insights into microwave-assisted pyrolysis of scrap tyres, demonstrating that it can produce microporous carbon black with potential application in xylene adsorption. Compared to conventional pyrolysis, microwave pyrolysis requires less time and energy while maintaining similar adsorption capacity.
Article
Chemistry, Physical
Max Bommert, Bruno Schuler, Carlo A. Pignedoli, Roland Widmer, Oliver Groning
Summary: A detailed understanding of the interaction between molecules and two-dimensional materials is crucial for incorporating functional molecular films into next-generation 2D material-organic hybrid devices. This study compares the energy level alignment of different-sized fullerenes on a Moire superstructure and finds that C-84 fullerenes can be either neutral or negatively charged depending on slight variations of the electrostatic potential. This discovery suggests a new path to achieve ambipolar charge transfer without overcoming the electronic gap of fullerenes.
Article
Chemistry, Physical
Yuanjing Cheng, Xianxian Sun, Ye Yuan, Shuang Yang, Yuanhao Ning, Dan Wang, Weilong Yin, Yibin Li
Summary: The dual-structure aerogel (GS) consisting of flexible silica fibers and graphene honeycomb structures exhibits excellent resilience, flexibility, and reliability. It also shows remarkable wave absorbing performance, making it an ideal candidate for microwave absorption applications such as flexible electronics and aerospace.
Article
Chemistry, Physical
Shuyu Fan, Yinong Chen, Shu Xiao, Kejun Shi, Xinyu Meng, Songsheng Lin, Fenghua Su, Yifan Su, Paul K. Chu
Summary: Graphene coatings are promising solid lubrication materials due to their mechanical properties. This study presents a new method for in situ deposition of high-quality graphene coatings on hard substrates using NiCo solid solution and competitive reaction strategies. The graphene coating deposited on substrates with deep NiCo solid solution demonstrates superior low-friction and durability.
Article
Chemistry, Physical
Mengdi Wang, Sanyin Qu, Yanling Chen, Qin Yao, Lidong Chen
Summary: The improved thermoelectric properties of conducting polymers are achieved by selectively capturing single-walled carbon nanotubes (SWNTs) in a conducting polymer film, leading to increased carrier mobility and reduced thermal conductivity. The resulting composite film exhibits significantly higher electrical conductivity and lower thermal conductivity compared to films with a mixture of SWNTs. This work provides a convenient and efficient method to enhance the thermoelectric properties of conducting polymers.
Review
Chemistry, Physical
Heng Wei, Weihua Li, Kareem Bachagha
Summary: This article reviews the research progress of carbon nanotube-based microwave absorbing materials (MAMs) in recent years, covering the fundamental theory, design strategies, synthesis methods, and future development directions.
Article
Chemistry, Physical
Chenguang Shi, Junlong Huang, Zongheng Cen, Tan Yi, Shaohong Liu, Ruowen Fu
Summary: This study developed a high-performance Li metal host material, which achieved dendrite-free Li deposition with a low nucleation overpotential and high Coulombic efficiencies through the combination of Ti3C2-g-PV4P sheets and Ag nanoparticles. The full cells assembled with the Li@host anode and LiFePO4 cathode exhibited high discharge capacity and excellent cycling stability, demonstrating a perspective design for future energy storage devices.
Article
Chemistry, Physical
Tomotaro Mae, Kentaro Kaneko, Hiroki Sakurai, Suguru Noda
Summary: A new partial prelithiation method for SiO/C-CNT electrodes was developed, which showed reduced irreversible capacity and achieved high energy densities with good reversibility. The method allows for precise control of the degree of prelithiation and is applicable to various chemistries.
