INDUSTRIAL CROPS AND PRODUCTS
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2024
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IF 5.6
Yuhe Wei,Xiaoping Sun,Yanfen Sun,Juan Yuan,Haoqiu Chen,Lianxin Luo
Self-powered flexible electronic devices are being rapidly developed rapidly for the field of sensing and motion monitoring, posing greater challenges to friction electrical materials. Triboelectric hydrogels must be enhanced in terms of their electrical conductivity and mechanical strength to address the poor stability, low sensitivity, and susceptibility to unpredictable physical damage of conventional hydrogels. In this study, multinetwork polyacrylamide (PAM)-agar (AG)/nanofibrillar cellulose (CNF)-MXene triboelectric hydrogels with homogeneous structures were prepared. By adopting AG and CNF as "sacrificial bonding" modes and utilizing the high conductivity of MXene , triboelectric hydrogels were found to have good electrical conductivity, high tensile properties , high tensile strength , and high sensitivity. Single-electrode triboelectric nanogenerators made of triboelectric hydrogels were used as self-powered wearable sensors for accurately detecting the amplitude of movement in different parts of the human body during exercise. The results obtained in this study have positive implications for promoting the design of high-performance hydrogel materials and their application in flexible wearable sensors.
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ADVANCED FUNCTIONAL MATERIALS
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2024
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IF 18.5
Weichen Zhao,Qihang Ding,Bingshuai Zhou,Jia Liu,Yujia Shi,Chengyu Liu,Chunyan Li,Biao Dong,Manlin Qi,Jong Seung Kim,Lin Wang
Sonodynamic therapy (SDT) is promising for combating deep-seated infectious diseases by generating substantial reactive oxygen species (ROS) through the profound tissue penetration capabilities of ultrasound. However, the compact protective structures of bacterial biofilms present a formidable challenge, impeding ROS efficacy. Given that ROS have a limited diffusion range and current sonosensitizers struggle to infiltrate biofilms, complete eradication of pathogenic bacteria often remains unachieved. In this study, mesoporous titanium dioxide (TiO 2 ) nanoparticles are engineered asymmetrically coated with a thin layer of Ag and loaded with L-arginine (LA) to construct ultrasound-propelled nanomotors. These Ag-TiO 2 -LA Janus nanoparticles demonstrate robust self-propulsion upon ultrasonic activation, allowing for deeper penetration into biofilm matrices and enhancing localized biofilm disruption through improved SDT outcomes. Additionally, the incorporation of Ag not only broadens TiO 2 ’s absorption spectrum but also confers photothermal capabilities upon NIR laser excitation at 808 nm. The Ag-TiO 2 -LA nanomotor amalgamates TiO 2 ’s sonodynamic potential with Ag's photothermal properties, forging a versatile antimicrobial agent capable of efficient biofilm penetration and a synergistic antibacterial effect when subjected to dual NIR and ultrasound stimuli. This innovative, singularly-structured nanoparticle stands out as an effective combatant against bacterial biofilms and accelerates the healing process of infected wounds, showcasing potential for multifaceted clinical applications.
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Journal of Environmental Chemical Engineering
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2024
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IF 7.4
Zhaohui Fei,Chi Jiang,Qunwei Tang,Yingfei Hou
To solve the scarcity of fresh water, reverse osmosis (RO) technology for seawater desalination and wastewater reuse has been developed rapidly. However, the performance of RO is limited by poor selectivity towards certain harmful small molecule constituents (e.g., boron in seawater and N-nitrosodimethylamine in wastewater) and the permeability-selectivity trade-off. Herein, a metal polyphenol network interlayer including both hydrophobic zone and monomer adsorption zone is proposed to optimize interfacial polymerization (IP) process for fabrication of RO membrane . This heterogeneous characteristic is endowed by well-chosen phenol (i.e. TTSBI) and metal (Ni). The physicochemical properties of the substrate are also optimized. An ultra-selective RO membrane with thinner separation layer, higher crosslinking degree and larger surface area is obtained. The RO membranes exhibit separation performance beyond the upper selectivity limit for NaCl and hazardous small molecules. The membrane water permeance is 3.50 L m −2 h −1 bar −1 while the NaCl rejection is 99.5 %. Meanwhile, the mechanism of the interlayer influencing IP process is investigated by combining molecular simulation and experimental methods. Our work provides a novel design direction of substrate used for fabricating RO membrane with outstanding performance.
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Nature Communications
·
2024
·Vol. 15
·期 1
·1-12
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IF 14.7
Mao Qian,Liao Zijian,Yuan Jinfeng,Zhu Rong
As robots are increasingly participating in our daily lives, the quests to mimic human abilities have driven the advancements of robotic multimodal senses. However, current perceptual technologies still unsatisfied robotic needs for home tasks/environments, particularly facing great challenges in multisensory integration and fusion, rapid response capability, and highly sensitive perception. Here, we report a flexible tactile sensor utilizing thin-film thermistors to implement multimodal perceptions of pressure, temperature, matter thermal property, texture, and slippage. Notably, the tactile sensor is endowed with an ultrasensitive (0.05 mm/s) and ultrafast (4 ms) slip sensing that is indispensable for dexterous and reliable grasping control to avoid crushing fragile objects or dropping slippery objects. We further propose and develop a robotic tactile-visual fusion architecture that seamlessly encompasses multimodal sensations from the bottom level to robotic decision-making at the top level. A series of intelligent grasping strategies with rapid slip feedback control and a tactile-visual fusion recognition strategy ensure dexterous robotic grasping and accurate recognition of daily objects, handling various challenging tasks, for instance grabbing a paper cup containing liquid. Furthermore, we showcase a robotic desktop-cleaning task, the robot autonomously accomplishes multi-item sorting and cleaning desktop, demonstrating its promising potential for smart housekeeping.
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Journal of Materials Chemistry A
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2018
·Vol. 6
·期 10
·4365-4373
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IF 9.931
Liguo Gao,Likun Wang,Xiaogang Ding,Erling Zhao,Shuzhang Yang,Yingyuan Zhao,Yanqiang Li,Shufeng Wang,Tingli Ma
The power conversion efficiency (PCE) of perovskite solar cells (PSCs) can be improved by introducing appropriate additives into perovskite precursor solutions. However, the exact role and mechanism of additives are still unclear. In this study, self-designed cognition experiments were conducted to improve the hole extraction efficiency, as well as to deeply understand the working principle of additives. A common hole transport material, 2,2′,7,7′-tetrakis[N,N-di(4-methoxyphenyl) amino]-9,9′-spirobifluorene (spiro-OMeTAD), was used as an additive for bulk heterojunction PSCs (BHJ-PSCs). The results showed that the PCE of mesoporous BHJ-PSCs (M-BHJ-PSCs) was enhanced by more than 15% when an extremely low concentration of spiro-OMeTAD additive was added. However, the crystallization of the perovskite was hampered and the recombination risk increased when grain boundaries increased in the perovskite layer. Planar BHJ-PSCs were fabricated to further investigate the role of additives. In comparison with those in planar BHJ-PSCs, the hole extraction efficiency and diffusion length significantly improved in M-BHJ-PSCs due to the transport paths and relay effects caused by the spiro-OMeTAD additive. Subsequently, exact functions and a new working principle of additives in BHJ-PSCs were proposed. This study may extend the possibilities of designing highly efficient PSCs through the promotion of additive research and application.
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FOOD AND AGRICULTURAL IMMUNOLOGY
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2018
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IF 2.568
Zhi-Li Xiao,Wei Tian,Zhen-Lin Xu,Yuan-Ming Sun
In this study, we develop a sensitive indirect competitive chemiluminescent enzyme immunoassay (ic-CLEIA) to detect cadmium (Cd) in cereals. A luminol-hydrogen peroxide chemiluminescence system catalysed by horseradish peroxidase (HRP) was used as the signal detecting system. The method showed a half-maximal inhibition concentration (IC50) of 0.5 ng/mL and a limit of determination (LOD) of 0.06 ng/mL. The assay indicated an effective linear range from 0.16 to 1.56 ng/mL. There were no obvious cross-reactivities with other metal ions, including Hg2+, Pb2+, As2+, Ag+, Fe3+, Cu2+, Cr2+, Au3+, Ca2+, Mg2+, Mn2+ and Zn2+. Recovery rates ranged from 79.2% to 120.0% for rice, maize, wheat, brown rice and glutinous rice samples. Twenty-five practical cereal samples were analysed, and the comparative analysis of the results showed a strong correlation (r = 0.984) between the CLEIA and the GFAAS methods. The results indicated that the ic-CLEIA developed was acceptable to screen for cadmium in cereal samples.
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IEEE TRANSACTIONS ON ELECTRON DEVICES
·
2025
·
IF 3.2
Yujie Jin,Jun Zhang,Hengdian Chang,Haonan Lin,Yuyao Tu,Yudong Cao,Yabin Mou,Yuan Yang,Ziqiang Zhao,Zhiyao Wu,Yufeng Guo
Copolymers organic semiconductors (OSCs) such as diketo pyrrolopyrrole-thieno3,2-bthiophene (DPPT-TT) have demonstrated strong peak absorption in ultraviolet (UV) and near-infrared (NIR) regions. However, OSC-based photodiodes (OPDs) still suffer from low photodetection efficiency and photocurrent due to the high recombination rate of Frenkel excitons and limited light absorption caused by the thin active layer. In this work, a dopant-assisted exciton enhancement (DEE) mechanism is explored. By introducing a dopant layer between the bottom electrode and active layer, charge transfer is driven, significantly suppressing exciton recombination, resulting in more than a ten-fold increase in photodiode responsivity. To further enhance light absorption, a layer of metal particle nanostructure is employed. The fabricated OPDs exhibit significantly improved photoelectric performance, achieving a photocurrent density of 15.83 mA/cm2 under a light intensity of 0.002 W/cm2 at 264 nm. The external quantum efficiency (EQE) reaches approximately 98.41% at a bias voltage of 2 V, which is a 27-fold increase compared to conventional devices. Experimental results demonstrate that thin organic photodetectors, modified by electrophilic substitution and light scattering principles, hold great potential for nonvisible light band detection.
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JOURNAL OF HAZARDOUS MATERIALS
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2024
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IF 12.2
Yuhan Zhang,Huan Wang,Zhichao Song,Caijian Wang,Jingwei Hou,Kunyan Sui,Pengfei Qi
Selective autonomous enrichment of micropollutants in the aquatic media has attracted increasing attention because of their low concentration characteristics and diverse coexisting species. Herein, the gradient hydrogels were prepared via free redical polymerization of AA and NH 2 -β-CD under the induction of unilateral UV illumination (P(AA-NH 2 -β-CD)). The gradient hydrogels present autonomous enrichment towards Sb(III) with a higher selectivity both in single and binary solutions. The simulation calculations proved that the electrostatic potential of the gradient hydrogel is almost identical before and after enrichment of Sb(III), suggesting that the formed hydrogen bonds between carboxyl and hydroxyl groups with gradient distribution play vital voles on its higher selectivity by gradient hydrogels. Moreover, the gradient P(AA-NH 2 -β-CD) hydrogels showed selective self-driven enrichment performance for identically charged organic dyes based on host-guest and electrostatic interactions. For the positively charged model pollutants, the gradient hydrogels exhibited a superior selective enrichment performance for MG than X-GRL with a lower K value. The as-prepared gradient hdyrogel may have potential applications for the self-driven and selective removal of micropollutants.
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Journal of Energy Chemistry
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2024
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IF 14
Haocheng Xiong,Donghuan Wu,Haonan Li,Andrew Li,Qikun Hu,Siyao Song,Bingjun Xu,Qi Lu
Renewable energy-driven bicarbonate conversion to valuable chemicals presents an attractive strategy for mitigating CO 2 emissions, as bicarbonate can be efficiently generated from the capture of atmospheric CO 2 using alkaline solutions with reactive absorption. In this work, we present a CO 2 -mediated bicarbonate conversion to pure formate using a cation exchange membrane-based electrolyzer with a 25 cm 2 electrode area. Our electrolysis achieved selectivities exceeding 75% for formate at a total current of 2.5 A, achieving formate concentrations up to 1.2 M and yields as high as 95% over extended periods. The techno-economic assessment confirmed the economic viability of the process, highlighting the potential for bicarbonate electrolysis as a sustainable method for producing valuable chemicals.
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Chemical and Biological Technologies in Agriculture
·
2024
·Vol. 11
·期 1
·1-15
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IF 5.2
You Yuxin,Wang Chen,Abdallah Yasmine,Liu Quanhong,Liu Chentao,Luo Jinyan,Dai Dejiang,Al-Rejaie Salim S.,Mohany Mohamed,Li Bin,Ogunyemi Solabomi Olaitan,An Qianli
One-pot synthesis of metal nanoparticles under ambient temperature and pressure using reducing and stabilizing materials from microbes is energy-effective and ecofriendly, but upstream extraction of biological raw materials and downstream purification of nanoparticles from bioreactors are laborious and expensive. To simplify the productive process for using metal nanoparticles as microbicides to control plant pathogens, we use an endospore-forming Bacillus biocontrol agent to produce the nano-microbicide and use the bacterial raw materials as bio-microbicides together with the nano-microbicide.Bacillus cells at the stationary phase form endospores and tolerate Ag+ and Ag nanoparticles (AgNPs), while the cell-free culture supernatant (CFCS) mediates the synthesis of AgNPs. AgNPs produced from the Bacillus culture and CFCS show similar physical, chemical, and electrical characteristics, and bactericidal and anti-biofilm activities. Moreover, the diluted products effectively protect the kiwifruit leaves from the infection of the pathogen Pseudomonas syringae pv. actinidiae.This coproduction of bio-microbicide and nano-microbicide is a totally green one-pot synthesis process without extraction and purification and without production of waste and can be easily scaled up using the existing fermentation processing of Bacillus biocontrol agents. The application of the synergistic bio-microbicide and nano-microbicide can effectively control the bacterial canker disease of kiwifruit plants.
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ANALYTICA CHIMICA ACTA
·
2025
·
IF 6
Yijing Kuang,Wei Yuan,Xuyuan Chen,Xiaoning Wang,Xiaoying Wang
Background The expression of oncoprotein c-Myc (OP c-Myc ) in blood is closely related to the occurrence and development of various tumors. Common detection methods have the disadvantages of complicated procedures, expensive instruments, or low sensitivity. Currently, several single-mode immunosensors have been developed to detect OP c-Myc and overcome the above shortcomings. However, they are susceptible to the interference of the sensing interface and the external environment, which may lead to false-positive or false-negative results. Therefore, sensitive and accurate assessment of OP c-Myc levels in the blood is very important for the early diagnosis and monitoring of tumors. Results A novel electrochemiluminescence (ECL)-electrochemical (EC) dual-mode immunosensor was developed for the sensitive detection of trace OP c-Myc . Gold nanoparticles-magnetic reduced graphene oxide (AuMrGO), with a large surface area and conductivity, were stably fixed on a magnetic glassy carbon electrode and utilized as the immobilization platform. Ruthenium(II)tris(bipyridine) (Ru) doped Au, Ag, and Pd trimetallic nanocomposite (Tri-Ru) with excellent ECL and EC properties was synthesized by mechanical alloying method and used as the bifunctional signaling label. Further, combined with the trace detection advantages of indirect competition, the convenient and sensitive dual-mode detection of OP c-Myc was realized. The results showed a strong linear relationship for concentrations from 10 pg L −1 to 0.1 μg L −1 in ECL mode and from 0.1 ng L −1 to 1 μg L −1 in EC mode, with limits of detection (LOD) of 4.9 pg L −1 and 30 pg L −1 , respectively. The assay performed good analytical performances and clinical practicability in lymphoma patients’ blood samples. Significance This is the first detection of OP c-Myc using an ECL immunosensor, and it is also the first attempt to use a dual-mode detection strategy for OP c-Myc . The strategy could be used for sensing and detecting other proteomic tumor markers and established a promising platform for early auxiliary diagnosis and monitoring of cancers.
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ACS Applied Polymer Materials
·
2024
·
IF 4.4
Kaiqi Zhang,Shenglong Shang,Yu Zheng,Luyao Wei,Ping Zhu
The growing demand for efficient and economical cooling in both indoor and outdoor applications, especially personal cooling in outdoor environments, is a major challenge globally today. Passive daytime radiative cooling technology with spectral selectivity which operates by transferring radiative heat into cold universe (∼3 K) through the atmospheric window (8–13 μm) is an emerging and sustainable cooling technology. However, passive daytime radiative cooling materials are still limited by nondegradable, finite categories and single function. In this paper, multifunctional biobased poly(lactic acid) (PLA)/poly(butylene succinate) (PBS) nanofiber membranes with radiation cooling, electrical conductivity, and antibacterial properties were prepared by electrospinning technology combined with spraying technology. This multifunctional nanofiber membrane has high solar reflectivity (82%) and strong mid-infrared emissivity (98%) that achieves a temperature drop of 5.5–12 °C on sunny days and 2.9–10 °C on cloudy days. Adding 18.2% silver nanowires can reduce the resistance of the nanofiber membrane to 208 Ω, which also endowed the membrane with good antibacterial properties. This multifunctional nanofiber membrane opens up an environmentally sustainable approach for personal thermal management and introduces new possibilities for the rational design of next-generation smart textiles.
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