Article
Chemistry, Physical
Guanglu Lei, Zishuo Li, Guocai Lu, Jinyuan Hu, Haochuan Shang, Xiaolei Zhang, Xianghong Liu, Jun Zhang, Xiangxin Guo
Summary: Metal oxide semiconductor (MOS) thin films, especially tungsten oxide (WO3) thin films, have shown great potential as sensing layers for gas sensor devices. This study focuses on the deposition and annealing process of WO3 thin films on interdigital electrodes, and explores the impact of oxygen vacancies on sensor properties. The results indicate that the WO3 sensor annealed at 500 degrees C exhibits the best performance in detecting triethylamine (TEA), which is attributed to the enhanced adsorption of oxidative oxygen species due to the presence of abundant oxygen vacancies.
JOURNAL OF MATERIOMICS
(2022)
Article
Chemistry, Analytical
E. Spagnoli, S. Krik, B. Fabbri, M. Valt, M. Ardit, A. Gaiardo, L. Vanzetti, M. Della Ciana, V Cristino, G. Vola, S. Caramori, C. Malagu, V Guidi
Summary: Tungsten oxide nanoflake powders were synthesized using solvothermal technique for ethanol sensing, showing good response to ethanol compared to other alcohols due to an interplay between the catalytic properties of the sensing film and gas diffusivity in a porous medium.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Materials Science, Multidisciplinary
Xiaofeng Dai, Xueliang Fang, Huajie Wu
Summary: In this study, rich-oxygen vacancy CuO nanoflakes were prepared by facile hydrothermal synthesis method. The CuO1-x based gas sensor showed good sensing performance to 0.5-5 ppm NO at -25 degrees C, with high response to 5 ppm NO and low response to 0.5 ppm NO. The gas sensor also exhibited excellent low limit of detection, selectivity, and long-term stability.
Article
Multidisciplinary Sciences
Qing Wei, Ling Wu, Meiwen Zhu, Zhipeng Wang, Zheng-Hong Huang, Ming-Xi Wang
Summary: Constructing high-performance enzyme-free biosensors for glucose detection is crucial for early diagnosis of diabetes. In this study, copper oxide nanoparticles (CuO@Cu2O NPs) were immobilized in porous nitrogen-doped reduced graphene oxide (PNrGO) to create a CuO@Cu2O/PNrGO/GCE hybrid electrode for sensitive glucose detection. The hybrid electrode demonstrated excellent glucose sensing performance, surpassing that of the pristine CuO@Cu2O electrode, due to the synergistic effects between the numerous high activation sites of CuO@Cu2O NPs and the unique properties of PNrGO, such as excellent conductivity and large surface area with accessible pores. The enzyme-free glucose biosensor exhibited a significant glucose sensitivity of 2,906.07 mA mM(-1) cm (-2), an ultralow limit of detection of 0.13 mM, and a wide linear detection range of 3 mu M-6.772 mM. Additionally, the glucose detection method displayed outstanding reproducibility, favorable long-term stability, and excellent selectivity. Importantly, this study provides promising results for the continuous improvement of non-enzyme sensing applications.
Article
Chemistry, Multidisciplinary
Dong-Ha Kim, Jaehyeong Bae, Jiyoung Lee, Jaewan Ahn, Won-Tae Hwang, Jaehyun Ko, Il-Doo Kim
Summary: Thermochromic sensors provide a real-time solution for monitoring local temperature with naked eyes. This article introduces a rational synthetic route to fabricate highly sensitive nanofiber sensor membranes loaded with thermochromic dyes. The porous nanofiber sensor membranes exhibit improved thermochromic sensitivity and light transmittance, enabling accurate monitoring of body temperature.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zhi Zheng, Haiyang Li, Liang Hai, Ruiqi Ma, Rui Liu, Chunpeng Zhai, Zongdong Sun, Fei Wang, Ying Ma, Qingguo Xie, Xiaoding Lou, Tianyou Zhai, Fan Xia
Summary: 2D Cs3Bi2Br9 nanoflakes possess excellent optical/electrical properties and stability, making them promising for high sensitivity X-ray detection. An Ag+ assisted inversion temperature crystallization method was proposed to synthesize the nanoflakes, which passivates Br- vacancies and enhances structure stability. The high crystallinity nanoflakes exhibit direct bandgap characteristic and high mobility lifetime, enabling the development of highly sensitive optoelectronic devices.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Yan Yang, Honglie Shen, Zhiyan Yang, Jiale Yang, Zehui Wang, Kai Gao
Summary: This article reports an efficient method to fabricate a wearable strain and pressure sensor based on porous graphene paper. The sensor exhibits good flexibility and rapid response time, and the porous microstructure created by PMMA microsphere plays a vital role in its performance. The sensor shows potential applications in smart wearable devices.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2022)
Article
Chemistry, Physical
Enhui Bao, Xianglin Ren, Runze Wu, Xiaohong Liu, Huiyu Chen, Yi Li, Chunju Xu
Summary: In this work, MgCo2O4 microspheres and nanoflakes were synthesized using different methods and combined with annealing treatment. The resulting electrode materials exhibited porous structures, large specific surface areas, and showed excellent electrochemical performance and long-term cycling stability when evaluated in supercapacitors.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Engineering, Environmental
Diogo Dias, Davide Don, Jakpar Jandosov, Maria Bernardo, Filomena Pinto, Isabel Fonseca, Andre Sanches, Paulo Sa Caetano, Svitlana Lyubchyk, Nuno Lapa
Summary: The study demonstrated that P2C+KOH showed efficient adsorption of W(VI) in both synthetic and mining wastewaters, outperforming commercial activated carbon.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Physical
Aditya Yadav, Avinash Kumar, Lalit Goswami, Rimjhim Yadav, Anuj Sharma, Govind Gupta
Summary: Visible photodetectors are widely used in various fields and semiconductors like WO3 and Au NPs have been employed to enhance the performance of visible light detection.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Physical
Runze Wu, Jiale Sun, Xingyi Ma, Enhui Bao, Xuming Du, Chunju Xu, Huiyu Chen
Summary: In this study, mesoporous MgCo2O4 nanoflakes and nanowires were successfully synthesized and demonstrated battery-like features for potential applications as cathode materials in advanced supercapacitors. An asymmetric supercapacitor assembled with MgCo2O4 as cathode and AC as anode showed excellent electrochemical performance with high capacity, cycling stability, and energy density. The simple and cost-effective synthesis method with the ability to tune the shape of MgCo2O4 makes it a promising candidate for the next-generation supercapacitors.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Chemical
Ting Lu, Yong Liu, Xingtao Xu, Likun Pan, Asma A. Alothman, Joe Shapter, Yong Wang, Yusuke Yamauchi
Summary: Capacitive deionization (CDI) utilizes the electrical double layer to separate ions from saline water. There is growing interest in using low-cost, eco-friendly carbon materials derived from abundant biomass for CDI. Carbon nanoflakes prepared from xylose pyrolysis with KHCO3 show promising salt adsorption capacity, indicating potential industrial application for CDI.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Chemistry, Physical
K. Karuppasamy, Bharat Sharma, Dhanasekaran Vikraman, Eun-Bee Jo, P. Sivakumar, Hyun-Seok Kim
Summary: This study designed and prepared ordered porous, three-dimensional hierarchical NiFe2O4 nanoarchitectures for highly selective and sensitive toluene sensors. The NFO-550 sensor achieved a maximum response 5.65 times higher than that of NFO-Hy sensor, indicating its potential for real-world toluene gas sensing applications.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Engineering, Environmental
Jesse Nii Okai Amu-Darko, Shahid Hussain, Qiang Gong, Xiangzhao Zhang, Ziwei Xu, Mingsong Wang, Guiwu Liu, Guanjun Qiao
Summary: In this study, In2O3/PANI composites were synthesized using the hydrothermal technique to explore their sensing capabilities for NO2 gas. The gas sensing properties, such as response/recovery time, optimal temperature, and recyclability, were investigated by analyzing the morphology, purity, and crystal structures of the samples. The In2O3/PANI-1 sensors exhibited high responses, quick response and recovery times, and a low detection limit to NO2 gas at a working temperature of 250 degrees C. The fundamental detecting mechanism for NO2 gas and the electrical characteristics of the In2O3/PANI composites were also discussed.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
K. Ramya, Aditya Tiwari, P. N. Sidhartha, Sayan Kanungo, Karumbaiah N. Chappanda
Summary: An electrochemical biosensor based on a 2-D tungsten diselenide nanoflakes electrode has been developed for highly selective detection of dopamine. The sensor demonstrates a large active working area, high sensitivity, and excellent selectivity to other substances.
IEEE SENSORS JOURNAL
(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.