Article
Electrochemistry
Congcong Dang, Pu Feng, Sixian He, Liancheng Zhao, Aidang Shan, Ming Li, Lingti Kong, Liming Gao
Summary: The design of ultra-stable cathode materials with excellent catalytic performance for Li-O2 batteries is important. In this study, a unique NiCo bimetallic phosphide combined with carbon nanotube heterostructure was fabricated. The NiCoP/CNT cathode exhibited low overpotential and stable performance under high current, indicating its potential for use in Li-O2 batteries. This research also provides guidance for the design and synthesis of bimetallic cathodes in Li-O2 batteries.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Multidisciplinary
Yining Ma, Rui Shu, Tongxiang Xu, Jing Li, Dandan Zhu, Xiaodong Jin, Mingchen Wu, Xun Cao
Summary: (NH4)(2)V7O16 hierarchical structures were synthesized by self-assembly of nanoflakes using a one-step rotating hydrothermal method. These structures showed good rate capability and cyclic stability when used as anodic materials for aqueous Li-ion batteries. The structural evolution of the material during cycling was also investigated using ex situ XRD.
NEW JOURNAL OF CHEMISTRY
(2021)
Article
Nanoscience & Nanotechnology
Li-Na Song, Li-Jun Zheng, Xiao-Xue Wang, Yi-Feng Wang, Yue Wang, Shuang Liang, Ji-Jing Xu
Summary: The role of Li+ reunion in improving the reaction kinetics of Li-CO2 batteries with a Cu cone cathode is systematically studied. The sharp-tip effect enriches the local electron concentration, facilitating Li+ ions diffusion and improving the catalytic performance. The reversible redox reactions of Cu(II/I) as a solid redox mediator contribute to the impressive performance of Li-CO2 batteries.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Multidisciplinary
Siyu Qu, Wenjie Wang, Zhengfa Ju, Qinghua Deng, Wentian Zhao, Zhao Fang, Wuwei Yan, Yong Yang
Summary: This study reports an electrocatalytic cathode material based on oxygen-decorated CoP nanosheets, which provides a pathway to improve the electrochemical performance of Li-CO2 batteries. Through enhanced electrical conductivity, construction of catalytically active sites, and full exposure of these sites, Li-CO2 batteries demonstrate good cycling characteristics and excellent discharge capacity. Density functional theory calculations show that efficient construction of O-Co-P bonds is crucial for enhancing electrocatalytic cathode performance, providing a useful reference for further development of efficient catalytic cathodes.
NEW JOURNAL OF CHEMISTRY
(2022)
Article
Nanoscience & Nanotechnology
Li-Na Song, Li-Jun Zheng, Xiao-Xue Wang, Yi-Feng Wang, Yue Wang, Shuang Liang, Ji-Jing Xu
Summary: The role of Li+ reunion in improving the reaction kinetics of Li-CO2 batteries with a Cu cone cathode is systematically studied. The local, geometry-driven tip effect enriches the local electron concentration, facilitating Li+ ion diffusion and leading to boosted catalytic performance. Cu(II/I) acts as a solid redox mediator in the Cu cone cathode, enabling efficient reduction and oxidation of solid Li2CO3, contributing to the impressive performance of Li-CO2 batteries.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Shenghan Gu, Helong Jiang, Xiangcun Li, Yan Dai, Wenji Zheng, Xiaobin Jiang, Gaohong He
Summary: A hierarchically porous membrane loaded with fully dispersed single-layered MXene was fabricated for a high-areal-capacity Li-S battery. The membrane exhibited a 3D hierarchical porous structure that strengthened Li+ and electron transportation, accommodated sulfur volumetric expansion, enabled high sulfur loading, and provided ample active sites for LiPSs anchoring. The uniformly dispersed Ti3C2Tx nanosheets in the membrane prevented restacking of the MXene layer, contributing to enhanced Li+ diffusion and LiPSs adsorption and catalysis. The Li-S batteries showed high specific capacity and cycle stability at high sulfur loading. This facile strategy provides insights for the design of novel cathode materials for high-areal-capacity Li-S batteries.
ENERGY STORAGE MATERIALS
(2022)
Article
Chemistry, Physical
Vairavel Mathayan, Kenji Morita, Bun Tsuchiya, Rongbin Ye, Mamoru Baba, Daniel Primetzhofer
Summary: The study demonstrates an ion beam-based analytical method with high depth resolution and sensitivity for depth profiling Li and O in thin-film batteries. Reversible Li transport from the anode to the cathode and O transport from the anode to the cathode were observed during charge and discharge cycles, while O transport was not observed in further charging and discharging processes.
MATERIALS TODAY ENERGY
(2021)
Article
Chemistry, Physical
Tingjiao Xiao, Yumei Yang, Mingzhi Yang, Weiliang Liu, Mei Li, Manman Ren, Feipeng Cai, Yuanhao Wang
Summary: A composite of flower-like CoOOH decorating hierarchical porous carbon (CoOOH-HPC) was synthesized and used as a sulfur host for Li-S batteries. The CoOOH-HPC/S electrode showed satisfactory electrochemical performance, with high discharge capacity and low capacity decay rate.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Wenlong Liu, Meng Lei, Xuejun Zhou, Chilin Li
Summary: In this paper, a novel heterojunction interlocked catalysis-conduction strategy is proposed to prepare a monolithic porous-pipe scaffold for LiPS accommodation. This scaffold enables excellent rate capability and long cycling stability of Li-S batteries, even under challenging conditions.
ENERGY STORAGE MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Jiale Qu, Chao Ning, Xiang Feng, Bonan Yao, Bo Liu, Ziheng Lu, Tianshuai Wang, Zhi Wei Seh, Siqi Shi, Qianfan Zhang
Summary: SiO-based materials have potential applications as alloys and conversion-type anode materials for lithium-ion batteries, as well as excellent dendrite-proof layers for lithium-metal batteries. Through first-principle calculations, three new thermodynamically stable phases (Li2SiO5, Li4SiO6, and Li4SiO8) were discovered, and it was found that Li2SiO5 and Li4SiO8 phases possess metallic properties with high electronic conductivity. The mechanical strength of Li-Si-O phases was also found to be higher than lithium metal, and the dominant diffusion mechanism in the Li-Si-O ternary systems is interstitial Li hopping.
ENERGY & ENVIRONMENTAL MATERIALS
(2022)
Article
Engineering, Environmental
Xiao-Xue Wang, Gui-Juan Ji, Ping She, Fei Li, Qing-Chao Liu, Huan-Feng Wang, Ji-Jing Xu
Summary: The hysteresis kinetics of carbon dioxide reduction and evolution reactions present major challenges for practical Li-CO2 battery implementation. A novel air cathode composed of TiO2 nanorod arrays and carbonized natural sponge was designed and realized, exhibiting high specific capacity and long cycle life due to improved conductive framework and available catalytic sites. This promising design improves CDRR and CDER kinetics effectively, boosting electrochemical reactions for high-performance Li-CO2 batteries.
CHEMICAL ENGINEERING JOURNAL
(2021)
Article
Nanoscience & Nanotechnology
Yu Zhang, Shuting Zhang, Jie Ma, Aijian Huang, Mengwei Yuan, Yufeng Li, Genban Sun, Chen Chen, Caiyun Nan
Summary: The synthesized RuO2-Co3O4 nanohybrid for lithium-oxygen batteries effectively reduces overpotential and improves circulatory performance, cycling stably for over 100 cycles. The introduction of RuO2 increases the oxygen vacancy concentration of Co3O4, accelerating charge transfer and reducing the adsorption energy of LiO2 intermediate, thus lowering overpotential effectively.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Multidisciplinary
Xu Ji, Yang Liu, Zhuxi Zhang, Jiabao Cui, Yangyang Fan, Yun Qiao
Summary: With the extensive use of fossil fuels, the increasing emissions of carbon dioxide are causing global climate change. It is crucial to reduce carbon dioxide emissions and develop efficient utilization methods. Li-CO2 batteries can convert carbon dioxide into electrochemical energy, but finding efficient catalysts for decomposing Li2CO3 is a challenge. In this study, a carbon foam composite with carbon nanotube, using cobalt as the catalyst, is demonstrated to enhance the decomposition rate of Li2CO3 and improve the electrochemical performance of Li-CO2 batteries.
CHEMISTRY-A EUROPEAN JOURNAL
(2023)
Article
Energy & Fuels
Heewon Yoo, Gwang-Hee Lee, Myeong-Chang Sung, Dong-Wan Kim
Summary: In Li-O-2 batteries, the application of catalyst materials by simple mixing with carbon black has led to limited active surface area and large overpotential. However, a recent study has shown the potential of a 1-D@3-D catalyst layer design to maximize active contact area and promote rapid diffusion of products and reactants in Li-O-2 batteries. The use of a Ru-CuO/RuO2@CC catalyst layer has demonstrated superior performance in terms of overpotential decay rate and capacity retention, making it a promising choice for Li-O-2 batteries.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Chemistry, Physical
Fangyuan Cheng, Xiaoyu Zhang, Yuegang Qiu, Jinxu Zhang, Yi Liu, Peng Wei, Mingyang Ou, Shixiong Sun, Yue Xu, Qing Li, Chun Fang, Jiantao Han, Yunhui Huang
Summary: The study shows that detrimental effects on the electrochemical performances of high-capacity nickel-rich layered oxide cathode LiNi0.8Co0.1Mn0.1O2 can be limited by forming a uniform inorganic/polymer cathode-electrolyte interface (CEI) through in-situ electrochemical oxidation of trace dual additives in traditional carbonate-based electrolytes. This CEI film not only eliminates adverse cathode-electrolyte interface reactions and prevents electrolyte penetration into grain boundaries, but also inhibits the formation of inactive rock salt phase on the material surface.
Article
Chemistry, Multidisciplinary
Zhicheng Jin, Yi Li, Ke Li, Jiajing Zhou, Justin Yeung, Chuxuan Ling, Wonjun Yim, Tengyu He, Yong Cheng, Ming Xu, Matthew N. Creyer, Yu-Ci Chang, Pavla Fajtova, Maurice Retout, Baiyan Qi, Shuzhou Li, Anthony J. O'Donoghue, Jesse V. Jokerst
Summary: In this study, a colorimetric biosensor using plasmonic gold and surfactant-like peptides (SLPs) was developed, which exhibited a strong aggregation propensity of the FFPC tail without the polar DDD head. The SLPs had specificity towards the target protease M-pro, a biomarker for SARS-CoV-2. This simple and visual tool showed detection limits of 15.7, 20.8, and 26.1 nM for M-pro in phosphate buffer, exhaled breath condensate, and saliva, respectively, and may have potential in designing other protease testing methods.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Physical
Erhai Hu, Chuntai Liu, Wei Zhang, Qingyu Yan
Summary: Electrochemical CO2 reduction reaction (CO2RR) is a significant process for recycling excessive CO2 in the atmosphere. However, the discovery of efficient catalysts for CO2RR is currently lagging behind due to limitations in current methods. To overcome this, researchers have increasingly used modern machine learning (ML) algorithms to accelerate catalyst screening and deepen our understanding of the mechanism. In this review, we examine recent applications of ML in CO2RR research, categorizing them by the types of electrocatalysts, and provide an introduction to the general methodology as well as a discussion on the pros and cons of such applications.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Chemistry, Physical
Gwendolyn J. H. Lim, Rodney Chua, J. Justin Koh, Kwok Kiong Chan, Ernest Jun Jie Tang, Vanessa Teh, Madhavi Srinivasan
Summary: A combination of structural and conformable batteries can increase the payload capacity and alleviate 'range anxiety' in electric vehicles. The study focuses on integrating aqueous structural and conformable batteries into vehicles through a multifunctional direct approach and a multifunctional conformable approach. The batteries exhibit high mechanical stability and energy storage capability, and have been successfully applied in a prototype toy car, demonstrating their potential for widespread use in the design of new generation structural batteries. (c) 2023 Elsevier Ltd. All rights reserved.
MATERIALS TODAY ENERGY
(2023)
Article
Energy & Fuels
Kivanc Saglik, Xianyi Tan, Ady Suwardi, Alex Qingyu Yan
Summary: Around 60% of useful energy is wasted in industry, homes, or transportation. Therefore, there has been increasing attention on thermoelectric materials for their ability to harvest waste heat into useful energy. Texture engineering is a special strategy that allows the exploitation of superior material properties in a specific direction, and it has been shown to significantly enhance the thermoelectric figure of merit of certain materials like (Bi,Sb)Te-3, Bi-2(Se,Te)3, CuSbSe2, and SnSe. Texture engineering provides a wide range of strategies to elevate the zT of anisotropic materials to values comparable to those of their single crystalline counterparts.
TRANSACTIONS OF TIANJIN UNIVERSITY
(2023)
Article
Engineering, Environmental
Yuqing Pan, Na Li, Ke Li, Shiyuan Ran, Chenyang Wu, Qulan Zhou, Jiyuan Liu, Shuzhou Li
Summary: This study reports a Fe2O3/amorphous SiO2 catalyst with high low-temperature activity for CO-SCR. Experiments and density functional theory (DFT) calculations provide direct evidence that an optimal content of oxygen vacancy enhances the low-temperature NO conversion ratio and N2 selectivity of Fe2O3-based catalyst. Compared with conventional defect engineering, the alpha-Fe2O3 (1 1 0) facet enables an oxygen vacancy generation-filling cycle in the CO-SCR reaction, following Mars-van Krevelen (MvK) mechanism.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Xueting Feng, Jiyuan Liu, Long Chen, Ya Kong, Zedong Zhang, Zixuan Zhang, Dingsheng Wang, Wen Liu, Shuzhou Li, Lianming Tong, Jin Zhang
Summary: Realizing efficient hydrogenation of N2 molecules in the electrocatalytic nitrogen reduction reaction is crucial but rarely reported. A new study presents a highly efficient electrocatalyst with a hydrogen radical-transferring mechanism, which can greatly reduce the potential and maintain high activity and selectivity in NRR.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Yuqi Guo, Rodney Chua, Yingqian Chen, Yi Cai, Ernest Jun Jie Tang, J. J. Nicholas Lim, Thu Ha Tran, Vivek Verma, Ming Wah Wong, Madhavi Srinivasan
Summary: Rechargeable aqueous Zn/S batteries with a unique hybrid aqueous electrolyte using ethylene glycol as a co-solvent are developed to address the issues of sulfur side reactions and zinc dendrite growth. The Zn/S battery exhibits an unprecedented capacity of 1435 mAh g(-1) and an excellent energy density of 730 Wh kg(-1) at 0.1 Ag-1, as well as a capacity retention of 70% after 250 cycles even at 3 Ag-1. The discharge mechanism involves sequential reduction of elemental sulfur by Zn, forming ZnS, while the charging process involves oxidation of ZnS and short-chain polysulfides back to elemental sulfur. This electrolyte design strategy and unique multi-step electrochemistry provide a new pathway for tackling both key issues and designing better Zn/S batteries in the future.
Article
Chemistry, Multidisciplinary
Joseph Jegan Roy, Ernest Jun Jie Tang, Minh Phuong Do, Bin Cao, Madhavi Srinivasan
Summary: Research on recycling electrode materials, particularly anode graphite, from spent lithium-ion batteries has gained attention due to economic benefits and environmental concerns. This study successfully recycled anode graphite from bioleaching residue, achieving a purity of 99.78% and demonstrating excellent electrochemical performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2023)
Review
Chemistry, Physical
Bo Han, Jiawei Liu, Carmen Lee, Chade Lv, Qingyu Yan
Summary: This paper provides a comprehensive review on the application and development of metal-organic framework (MOF) catalysts in the electrochemical nitrogen reduction reaction (E-NRR) field. It first introduces the basic principles of E-NRR, including the reaction mechanism, major apparatus components, performance criteria, and ammonia detection protocols. Then, the synthesis and characterization methods for MOFs and their derivatives are discussed. A reaction mechanism study via density functional theory calculations is also presented. Furthermore, the recent advancement of MOF-based catalysts in the E-NRR field, as well as the modification approaches on MOFs for E-NRR optimization, are elaborated. Finally, the current challenges and outlook of MOF catalyst-based E-NRR field are emphasized.
Article
Chemistry, Multidisciplinary
Haoyang Fu, Ke Li, Chenfei Zhang, Jianghong Zhang, Jiyuan Liu, Xi Chen, Guoliang Chen, Yongyang Sun, Shuzhou Li, Lan Ling
Summary: Machine learning algorithms are used to optimize the construction of Fenton-like single-atom catalysts (SACs) by extracting synthesis parameters and accurately predicting the phenol degradation rate. The heating temperatures during SAC synthesis significantly influence the Fe-N coordination number and ultimately dictate the catalyst's performance. Through machine learning-guided optimization, a highly efficient SAC dominated by Fe-N-5 sites with exceptional Fenton activity is identified. This work demonstrates the feasibility of machine learning in accelerating the development of high-performance catalysts.
Article
Engineering, Environmental
Ruofei Zhu, Ke Li, Dan Wang, Jipeng Fei, Jun Yan Tan, Shuzhou Li, Jichao Zhang, Hong Li, Shaohai Fu
Summary: We have ingeniously designed a 3D artificial tree evaporator, which combines Murray networks with plant transpiration for fast water transport and accelerated evaporation. This nature-inspired artificial tree can maximize solar energy absorption and utilize environmental energy for evaporation, achieving high evaporation rates and energy efficiency. It can continuously produce pure water from real seawater samples that meet or exceed drinking water standards set by WHO and EPA.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Ai Qin Thang, Yuejun Shen, Zugui Shi, Ge Yao, Sun Yew Wong, Zhaolin Liu, Qingyu Yan
Summary: A ceramic-coated separator (CCS) was fabricated by coating sub-micron-sized alpha (α)-alumina on a conventional microporous polyolefin separator using partially neutralized polyacrylic acid (Pn PAA) as a dispersant and binder. The Pn PAA adsorbs on alumina surfaces through columbic interaction, providing repulsive force for dispersion and strong binding on plasma-treated separator through hydrogen bonding. The CCS showed favorable wettability and ionic conduction in carbonate-based electrolyte due to the high hydrophilicity of Pn PAA and alumina. The Pn PAA-made CCS exhibited a substantial adhesion strength of about 106 N/m and a specific capacity of 145.0 mAh/g after 200 cycles at 1 C at room temperature in half cells (LFP/Li metal).
CHEMISTRY-AN ASIAN JOURNAL
(2023)
Article
Multidisciplinary Sciences
Chenhan Liu, Chao Wu, Xian Yi Tan, Yi Tao, Yin Zhang, Deyu Li, Juekuan Yang, Qingyu Yan, Yunfei Chen
Summary: Doping oxygen atoms in two-dimensional TiS3 nanoribbons can significantly enhance the lattice thermal conductivity. The localized lattice contraction and coupling strength enhancement lead to the suppression of phonon-impurity scattering, improving the phonon thermal transport.
NATURE COMMUNICATIONS
(2023)
Review
Nanoscience & Nanotechnology
Deepshikha Arora, Sze Yu Tan, Shi Wun Tong, Poh Chong Lim, Parvathi Nair Suseela Nair, Ming Lin, Qiang Zhu, Qingyu Yan, Wen-Ya Wu
Summary: This study developed a simple and practical method to synthesize and self-assemble Cu2-xS/CuYS heterostructured nanorods into vertically standing up 2D sheetlike structures. The cation exchange-induced assembly of heterostructured nanorods, coupled with particle interactions, was systematically studied, providing important insights for synthesis tools.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Huiying Yao, Xing Huang, Shuzhou Li, Wei Xu, Jia Zhu
Summary: For electrocatalysts, the electrocatalytic activity of non-metal sites cannot be ignored. The sulfur atoms in benzenehexathiol (BHT) based conjugated metal-organic frameworks (c-MOFs) are found to be the predominant active sites for the hydrogen evolution reaction (HER). The HER activity shows a volcano-shaped relationship with the 3p band center of the sulfur active site. Interlayer interactions also play a crucial role in determining the HER activity of c-MOFs. Based on these findings, we propose that Mo-BHT has excellent potential as an active HER catalyst.
JOURNAL OF MATERIALS CHEMISTRY C
(2023)
Article
Chemistry, Multidisciplinary
Laetitia Bardet, Herve Roussel, Stefano Saroglia, Masoud Akbari, David Munoz-Rojas, Carmen Jimenez, Aurore Denneulin, Daniel Bellet
Summary: The thermal instability of silver nanowires leads to increased electrical resistance in AgNW networks. Understanding the relationship between structural and electrical properties of AgNW networks is crucial for their integration as transparent electrodes in flexible optoelectronics. In situ X-ray diffraction measurements were used to study the crystallographic evolution of Ag-specific Bragg peaks during thermal ramping, revealing differences in thermal and structural transitions between bare and SnO2-coated AgNW networks.
Article
Chemistry, Multidisciplinary
Nathalia Cancino-Fuentes, Arnau Manasanch, Joana Covelo, Alex Suarez-Perez, Enrique Fernandez, Stratis Matsoukis, Christoph Guger, Xavi Illa, Anton Guimera-Brunet, Maria V. Sanchez-Vives
Summary: This study provides a comprehensive characterization of graphene-based solution-gated field-effect transistors (gSGFETs) for brain recordings, highlighting their potential clinical applications.
Article
Chemistry, Multidisciplinary
Sikandar Aftab, Hailiang Liu, Dhanasekaran Vikraman, Sajjad Hussain, Jungwon Kang, Abdullah A. Al-Kahtani
Summary: This study examines the effects of hybrid nanoparticles made of NiO@rGO and NiO@CNT on the active layers of polymer solar cells and X-ray photodetectors. The findings show that these hybrid nanoparticles can enhance the charge carrier capacities and exciton dissociation properties of the active layers. Among the tested configurations, the NiO@CNT device demonstrates superior performance in converting sunlight into electricity, and achieves the best sensitivity for X-ray detection.
Article
Chemistry, Multidisciplinary
Hyo Jung Shin, Seung Gyu Choi, Fengrui Qu, Min-Hee Yi, Choong-Hyun Lee, Sang Ryong Kim, Hyeong-Geug Kim, Jaewon Beom, Yoonyoung Yi, Do Kyung Kim, Eun-Hye Joe, Hee-Jung Song, Yonghyun Kim, Dong Woon Kim
Summary: This study investigates the role of SOX9 in reactive astrocytes following ischemic brain damage using a PLGA nanoparticle plasmid delivery system. The results demonstrate that PLGA nanoparticles can reduce ischemia-induced neurological deficits and infarct volume, providing a potential opportunity for stroke treatment.
Article
Chemistry, Multidisciplinary
Anurag Chaudhury, Koushik Debnath, Nikhil R. Jana, Jaydeep K. Basu
Summary: The study investigates the interaction between nanoparticles and cell membranes, and identifies key parameters, including charge, crowding, and membrane fluidity, that determine the adsorbed concentration and unbinding transition of nanoparticles.
Article
Chemistry, Multidisciplinary
Sina Sadeghi, Fazel Bateni, Taekhoon Kim, Dae Yong Son, Jeffrey A. Bennett, Negin Orouji, Venkat S. Punati, Christine Stark, Teagan D. Cerra, Rami Awad, Fernando Delgado-Licona, Jinge Xu, Nikolai Mukhin, Hannah Dickerson, Kristofer G. Reyes, Milad Abolhasani
Summary: In this study, an autonomous approach for the development of lead-free metal halide perovskite nanocrystals is presented, which integrates a modular microfluidic platform with machine learning-assisted synthesis modeling. This approach enables rapid and optimized synthesis of copper-based lead-free nanocrystals.
Article
Chemistry, Multidisciplinary
Zahir Abbas, Nissar Hussain, Surender Kumar, Shaikh M. Mobin
Summary: The rational construction of free-standing and flexible electrodes for electrochemical energy storage devices is an emerging research focus. In this study, a redox-active metal-organic framework (MOF) was prepared on carbon nanofibers using an in situ approach, resulting in a flexible electrode with high redox-active behavior and unique properties such as high flexibility and lightweight. The prepared electrode showed excellent cyclic retention and rate capability in supercapacitor applications. Additionally, it could be used as a freestanding electrode in flexible devices at different bending angles.
Article
Chemistry, Multidisciplinary
Lishan Zhang, Xiaoting Zhang, Hui Ran, Ze Chen, Yicheng Ye, Jiamiao Jiang, Ziwei Hu, Miral Azechi, Fei Peng, Hao Tian, Zhili Xu, Yingfeng Tu
Summary: Photodynamic therapy (PDT) is a promising local treatment modality in cancer therapy, but its therapeutic efficacy is restricted by ineffective delivery of photosensitizers and tumor hypoxia. In this study, a phototactic Chlorella-based near-infrared (NIR) driven green affording-oxygen microrobot system was developed for enhanced PDT. The system exhibited desirable phototaxis and continuous oxygen generation, leading to the inhibition of tumor growth in mice. This study demonstrates the potential of using a light-driven green affording-oxygen microrobot to enhance photodynamic therapy.
Article
Chemistry, Multidisciplinary
Yujin Li, Jing Xu, Xinqi Luo, Futing Wang, Zhong Dong, Ke-Jing Huang, Chengjie Hu, Mengyi Hou, Ren Cai
Summary: In this study, hollow heterostructured materials were constructed using an innovative template-engaged method as cathodes for zinc-ion batteries. The materials exhibited fast Zn2+ transport channels, improved electrical conductivity, and controlled volume expansion during cycling. The designed structure allowed for an admirable reversible capacity and high coulombic efficiency.
Article
Chemistry, Multidisciplinary
Paritosh Mahato, Shashi Shekhar, Rahul Yadav, Saptarshi Mukherjee
Summary: This study comprehensively elucidates the role of the core and electrostatic surface of metal nanoclusters in catalytic reduction reactions. The electrostatic surface dramatically modulates the reactivity of metal nanoclusters.
Article
Chemistry, Multidisciplinary
Pei Liu, Mengdi Liang, Zhengwei Liu, Haiyu Long, Han Cheng, Jiahe Su, Zhongbiao Tan, Xuewen He, Min Sun, Xiangqian Li, Shuai He
Summary: This study demonstrates a simple and environmentally-friendly method for the synthesis of zinc oxide nanozymes (ZnO NZs) using wasted hop extract (WHE). The WHE-ZnO NZs exhibit exceptional peroxidase-like activity and serve as effective catalysts for the oxidation of 3,3,5,5-tetramethylbenzidine (TMB) in the presence of hydrogen peroxide (H2O2). In addition, a straightforward colorimetric technique for detecting both H2O2 and glucose was developed using the WHE-ZnO NZs as peroxidase-like catalysts.
Article
Chemistry, Multidisciplinary
Hyunkyu Oh, Young Jun Lee, Eun Ji Kim, Jinseok Park, Hee-Eun Kim, Hyunsoo Lee, Hyunjoo Lee, Bumjoon J. Kim
Summary: Mesoporous carbon particles have unique structural properties that make them suitable as support materials for catalytic applications. This study investigates the impact of channel nanostructures on the catalytic activity of porous carbon particles (PCPs) by fabricating PCPs with controlled channel exposure on the carbon surface. The results show that PCPs with highly open channel nanostructures exhibit significantly higher catalytic activity compared to those with closed channel nanostructures.
Article
Chemistry, Multidisciplinary
Yunjie Lu, Zhaohui Li, Zewei Li, Shihao Zhou, Ning Zhang, Jianming Zhang, Lu Zong
Summary: A tough, long-lasting adhesive and highly conductive nanocomposite hydrogel (PACPH) was fabricated via the synergy of interfacial entanglement and adhesion group densification. PACPH possesses excellent mechanical properties, interfacial adhesion strength, and conductivity, making it a promising material for long-term monitoring of human activities and electrocardiogram signals.
Article
Chemistry, Multidisciplinary
Zichao Wei, Audrey Vandergriff, Chung-Hao Liu, Maham Liaqat, Mu-Ping Nieh, Yu Lei, Jie He
Summary: We have developed a simple method to prepare polymer-grafted plasmonic metal nanoparticles with pH-responsive surface-enhanced Raman scattering. By using pH-responsive polymers as ligands, the aggregation of nanoparticles can be controlled, leading to enhanced SERS. The pH-responsive polymer-grafted nanoparticles show high reproducibility and sensitivity in solution, providing a novel approach for SERS without the need for sample pre-concentration.
Article
Chemistry, Multidisciplinary
Melis Ozge Alas Colak, Ahmet Gungor, Merve Buldu Akturk, Emre Erdem, Rukan Genc
Summary: This research investigates the effect of functionalizing carbon dots with hydroxyl polymers on their performance as electrode materials in a supercapacitor. The results show that the functionalized carbon dots exhibit excellent electrochemical performance and improved stability.
