Energy & Environmental Science
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2024
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IF 32.4
Wenhua Xue,Jian Ye,Zhi Zhu,Reeti Kumar,Jun Zhao
The photocatalytic conversion of biomass into valuable chemicals offers a more energy-efficient and low-carbon alternative to traditional thermal catalysis, representing a promising strategy for fine chemical production without relying on fossil fuels. While most studies have focused on catalyst design to improve efficiency, the precise tuning of solvents has been neglected. This study examines the conversion of 5-hydroxymethylfurfural (HMF) into 2,5-diformylfuran (DFF) as a representative biomass alcohol oxidation reaction, revealing a novel strategy for enhancing photocatalytic efficiency through solvent fine-tuning. The introduction of minute quantities of water into an acetonitrile solvent matrix during the HMF oxidation reaction was observed to engender pronounced enhancements in catalytic performance, with the degree of effect contingent on precise water concentration. Trace water is an active participant in the catalytic cycle, diminishing the activation energy barrier for bond cleavage and averting catalyst deactivation. This mechanism also proved applicable to other photocatalysts and various alcohol substrates, highlighting the potential of this strategy for enhancing photoenergy utilization and reaction efficiency.
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PHYSICAL CHEMISTRY CHEMICAL PHYSICS
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2025
·
IF 2.9
Weiqiang Yuan,Xingzhong Zhu,Jizhe Zhang,Juan Xu,Yuhao Zhang,Junyao Cai,Ning Peng,Caixia Kan
Transparent conductive films based on copper nanowires (Cu NWs) have attracted extensive attention due to their cost-effectiveness. However, the inferior conductivity of Cu NWs compared to silver nanowires (Ag NWs) and the significant room temperature oxidation behavior have limited their widespread application and versatility. In this study, we present OA–Cu NW flexible transparent conductive films (FTCFs), which exhibit higher initial electrical performance and room temperature oxidation resistance. Initially, we synthesized high-purity Cu NWs and established a uniformly distributed Cu NW network on a PET substrate. Subsequently, post-treatment was carried out using a 0.1 M oxalic acid (OA) solution to immobilize oxalic acid on the Cu NWs. The resulting OA–Cu NW FTCFs show improved electrical properties compared to the original Cu NW FTCFs, with an optimal enhancement of 25%. The film demonstrated excellent room temperature oxidation resistance, showing minimal sheet resistance growth after 70 days of air exposure. Furthermore, the OA–Cu NW FTCFs exhibited good flexibility, as indicated by minimal changes in optoelectronic performance after a rigorous bend test of 10 000 cycles. The OA treatment not only effectively enhanced the performance of Cu NW FTCFs, but also circumvented high energy consumption and the selection of rare metal materials, thereby reducing the overall cost. As a result, the potential for large-scale production and application of Cu NW films is enhanced.
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JOURNAL OF APPLIED ELECTROCHEMISTRY
·
2024
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IF 2.4
Zhang Ruixuan,Wang Qiushi,Chen Liang,Zhang Jun,Liu Zhaoping
Due to the intrinsic structural stability, materials with polyanionic framework have attracted worldwide attention to build-up aqueous metal-ion batteries for large-scale energy storage. Anion-dependent electrochemical behaviors of graphene-modified Na 3 V 2 (PO 4 ) 3 (rGO/NVP/C) with rhombohedral structure have been explored. Compared to common saturated solutions, remarkable improvements on overall the electrochemical performances have been achieved in novel deep eutectic solvents (DES) based on methylsulfonylmethane, perchloride salts and water. A high-voltage aqueous lithium-ion battery consisted of rGO/NVP/C nanomaterials as cathode materials and carbon-coated NbOPO 4 as anode materials (rGO/NVP/C||DES-Li||NbOPO 4 ) exhibits a specific energy of 74 Wh kg −1 with a voltage output up to 1.8 V and excellent capacity retention that is above 80.1% after 600 cycles at 2 C current density. Kinetic studies have clearly shown that Li + (de)intercalation in rGO/NVP/C in DES is dominated by a diffusion-controlled process. During the repetitive Li + (de)intercalation, a phase transformation from Na 3 V 2 (PO 4 ) 3 phase into Li 2 NaV 2 (PO 4 ) 3 is identified. The negligible changes of lattice volume within Na 3 V 2 (PO 4 ) 3 during Li + (de)intercalation, and the wide electrochemical window of DES together with the low activity of water in DES enable the long cycle life of rGO/NVP/C||DES-Li||NbOPO 4 . Graphical abstract
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SEPARATION AND PURIFICATION TECHNOLOGY
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2025
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IF 9
Zekun Dong,Jiao Yang,Jie Yao,Yu Tang,Yan Zhang
Electro-peroxone (EP) is an emerging technology that combines electrochemistry and O 3 to remove contaminants. However, conventional carbon cathodes primarily contribute to the synthesis of H 2 O 2 in the system, which may scavenge HO . Herein, a series of Fe-based layered double hydroxides (LDH) was loaded onto graphite felt cathodes to strengthen the removal of organic contaminants. The EP system with CuFe-LDH/GF cathode (EP-CuFe-LDH/GF) demonstrated the highest removal rate (91.2 % within 20 min) of oxalic acid (OA), a typical ozone-resistance substance, approximately twice that of the EP-GF system. HO was identified the main reactive species. A new pathway for O 2 reduction and the generation of HO was found. The loading of CuFe-LDH altered the reduction pathway of O 2 on the GF cathode from 2e − to 1e − or 4e − process. As a result, HO was produced by the combination of O 3 and O 2 − instead of O 3 and H 2 O 2 , which avoided the quenching of HO by H 2 O 2 and enhanced the removal of OA. Moreover, the breaking complexation by O 3 , cathodic O 3 reduction and metal-OH catalyzed O 3 processes also contributed to the HO formation. Furthermore, the system could efficiently remove OA across a broad pH range of 3.0 to 9.0, addressing the poor performance of conventional EP systems under acidic conditions. Overall, the finding of this significant mechanism advances the understanding of organic pollutants removal and broadens the potential applications of EP system.
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MICROCHEMICAL JOURNAL
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2024
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IF 4.9
Xing Cheng,Yue Tang,Xiaohuan Huang,Linghui Huang,Han Tao,Yuangen Wu
Artificial enzymes have attracted much attention in food analysis because of their simple preparation, low cost, and strong stability. However, the most used artificial enzymes are based on oxidoreductases such as oxidase, peroxidase, catalase, and laccase. There are few reports on hydrolases like phosphatase for food analysis. Herein, a novel green zirconium-glutamic acid (Zr(IV)-Glu) complex was prepared using Zr ions and glutamic acid. The Zr(IV)-Glu complex was first found to possess excellent phosphatase-like activity, which was used to establish a fluorescent sensor for detecting phytic acid (PA). The Zr(IV)-Glu complex can catalyze the hydrolysis of 4-methylumbellione phosphate disodium salt (4-MUP) to produce blue fluorescent products with fluorescence emission peaks at 448 nm. PA with six phosphate groups can attach on the surface of Zr(IV)-Glu to form Zr-O-P bond and inhibit the catalytic activity of Zr(IV)-Glu, leading to the decrease of fluorescence in the system. The change of fluorescent intensity at 448 nm was positively correlated with the PA content, so that a fluorescent sensor using the phosphatase-like activity of Zr(IV)-Glu was proposed to detect PA. The established sensor has high sensitivity, low detection limit (LOD) of PA to 58 μg·L -1 , strong anti-interference ability, and excellent selectivity. This work can provide a new method for PA detection in food and further expand the application of phosphatase mimics.
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APPLIED CATALYSIS B-ENVIRONMENTAL
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2025
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IF 21.1
Linhao Wang,Jia Wei,Jiangkai Huo,Wei Ji,Xiaohui Zhang,Yanan Li,Jiamei Li,Nan Cui,Wenhao Yan,Yuxin Zhao,Jun Li,Ju Wang
Herein, an electron-optimized core-shell CoFe alloy-carbon composite (CoFeC) was developed from prepared CoFe Prussian blue analogues (CoFe PBAs) through pyrolysis and applied for peracetic acid (PAA) activation. Characterization analysis and theoretical calculations indicated that the Co sites as the primary active centers, with the presence of C and Fe in CoFeC significantly narrowed the difference between the d-band center ( Ɛ d ) and the Fermi level ( E F ), thereby reducing PAA adsorption energy on Co sites and enhancing electron transfer. The identification of reactive species confirmed that acetylperoxy radicals (CH 3 C(O)OO·) and singlet oxygen ( 1 O 2 ) were the dominant species driving the reaction. The CoFeC/PAA system demonstrated exceptional pollutant degradation efficiency, achieving nearly 100% removal within 30 min, along with strong interference resistance and high durability in continuous-flow reactors. This work provided novel insights into the activation of PAA by bimetallic carbon catalysts and offered guidance for the development of efficient and sustainable water treatment technologies.
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ChemistrySelect
·
2024
·Vol. 9
·期 32
·e202402449
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IF 1.9
Xiaoyan Wang,Zhuijun Xu,Said Amzil,Ya-Jun Cheng,Long Lin,Qing Ji,Suzhe Liang,Jin Zhu,Jingkuan Duan,Tianle Zheng,Yonggao Xia
Graphical Incorporation of in-situ Sn 4+ doping and nano-macro structure within TNO anode materials using facile one-step co-precipitation method achieves high Li + diffusion coefficient and excellent high-rate reversible capacities. Titanium niobium oxide (TNO) exhibits great potential as a lithium-ion battery anode due to its high capacity, minimal volume change during cycling, and safe good operation characteristic enabled from its voltage profile. However, its intrinsically low electronic and ionic conductivity hinders its potential for practical applications. This work proposes a facile coprecipitation method to address these limitations by incorporating a nano-macro structure and in situ Sn ion doping into bulk TNO. This approach ensures homogeneous integration of TNO precursors and the Sn dopant at a molecular level within the co-precipitation nanoparticles. Additionally, the use of low toxicity solvents facilitate scalability of the synthesis process. Excellent rate capability, high reversible capacities, and good capacity retention are achieved simultaneously due to synergistic effects of the bulk doping, which expands the crystal volume and enhances Li + diffusion, combined with abundant surface area of the nano-macro structures. The specific capacity of Sn-doped TNO nanospheres remains at 180 mAh/g at a high current density of 40 C (1 C=400 mA g −1 ), which is nearly four times higher than that of undoped samples. Furthermore, the cyclic voltammetry analysis at various scanning rates reveals an increased Li + diffusion rate in Sn doped titanium niobium dioxide.
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CHEMICAL ENGINEERING JOURNAL
·
2025
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IF 13.2
Yi Luo,Jianfeng Li,Juanxia He,Xuling Song,Bei Xu,Zhijun Zhang,Jiamin Zhao,Yuxin Xie,Yaqi Zhang,Zhengfeng Wang,Baijun Shang,Minxin Zhou,Shuangxi Nie,Shuangfei Wang,Qingshan Duan
Ammonia (NH 3 ) detection is crucial to ensure health safety and food quality. Real-time NH 3 detection in food circulation faces challenges such as low sensitivity and instability under different conditions. This study proposes an integrated NH 3 sensor based on triboelectric nanogenerators, in which the NH 3 -sensitive triboelectric material is formed by is in situ grown of polyaniline (PANI) on a SnO 2 -doped balsa scaffold. The balsa scaffold/PANI/SnO 2 sensor demonstrates excellent stability under wide operating range (25 %–99 % RH, −20 to 20 °C) and can detect NH 3 in real-time. The conductive network formed by the in-situ growth of PANI significantly enhances the electrical output performance. Thanks to the large specific surface area of the porous structure of natural balsa scaffold and gas-sensing enhancement of PANI/ SnO 2 heterojunction, the composite exhibits a strong NH 3 response and a low detection limit. The sensor shows a 41.5 % response at 100 ppm NH 3 concentration, a 30 % improvement compared to that of the balsa scaffold/PANI sensor, and a minimal detection limit of 5 ppm. Additionally, the triboelectric gas sensor as a wireless sensing terminal in smart devices successfully detects the food spoilage process in real-time to the user interface. This study introduces a novel approach for developing natural wood-based gas sensors, highlighting their potential in real-time food quality monitoring.
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JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE
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2024
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IF 2.2
Zhang Fangfang,Zuo Yuanyuan,Wu Degang,Yang Guanda,Schubert Dirk W.,Nie Lin
This study explores the surface modifications and properties of magnesium substrates through the application of alumina coatings for improved functionalities. Surface microstructures were investigated using a field emission scanning electron microscope after roughening treatments and alumina spray coatings. Elemental mapping revealed the distribution of coatings, demonstrating successful modifications with silane coupling agent and uniform alumina distribution. Contact angle measurements showcased enhanced hydrophobicity post-alumina coating, with notable improvements in contact angles over various liquids and self-cleaning assessments. Furthermore, wear resistance tests indicated the durability of the alumina coatings, displaying high stability even after repeated abrasions with sandpaper. The self-cleaning tests unveiled the remarkable performance of alumina-coated surfaces in repelling contaminants, underscoring their effective self-cleaning characteristics. Furthermore, the electromagnetic wave absorption properties of magnesium substrates coated with alumina demonstrated outstanding absorption efficiency, notably within the 7-11 GHz frequency range. This comprehensive analysis highlights the potential and effectiveness of alumina coatings in enhancing the properties of magnesium sheets, specifically in improving hydrophobicity, wear resistance, self-cleaning capabilities, and electromagnetic wave absorption.
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INDUSTRIAL CROPS AND PRODUCTS
·
2025
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IF 6.2
Félix Mérimé Bkangmo Kontchouo,Hao Xu,Marie Ganmo Koutchouo,Kuan Ding,Chayanoot Kositanont,Chotiros Dokkhan,Thipjak Na Lampang,Chanchana Thanachayanont,Xun Hu,Chaoyang Xu,Shu Zhang
Hydrothermal carbonization of lignocellulosic biomass results in hydrochar with abundant surface functionality and low degree of carbonization. In this work, Cola Shell was subjected to a pretreatment with the Deep Eutectic Solvent (DES) prior to hydrothermal carbonization under different conditions (210 ºC and 260 ºC). The aim was to ascertain the impact of pretreatment with DES on the properties of hydrochars. The results show that pretreatment with DES at 110 ºC favors the disintegration of hemicellulose while promoting the cellulose hydrolysis and dehydration. The lignin removal formed a snow cloud of particles on hydrochar surface, which further undergoes polymerization at a high HTC temperature to form a cluster of fibrous carbonaceous material, contributing to increase the degree of carbonization and thermal stability of hydrochar. DES pretreatment also reduced structural defects while increasing the cellulose crystallinity. In addition, DES pretreatment increased the nitrogen content and energy yield without affecting the calorific value of hydrochar-derived Cola Nut Shell.
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APPLIED SURFACE SCIENCE
·
2025
·
IF 6.9
Peng Deng,Fangdan Xu,Yuyang Zhou,Lili Wang
Polylactic acid (PLA) is a promising biodegradable polymer, however conventional disperse dyeing departs it from eco-friendly conception; the limited compatibility with bio-based dyes also leads to the low durability of colour and functionality. This study presents an effective strategy for fabricating durably golden yellow and UV protective PLA integrating quercetin (Qc) and formaldehyde-free crosslinker (Trimethylolpropane tris-2-methyl-1-aziridinepropionate, TTMAP). Results show that a notable increase in the K/S of PLA from 5.83 to 14.97 takes place when the TTMAP concentration escalates from 0 to 5 g/L under the help of methyl cinnamate (MC) and deep eutectic solvent(DES). Under optimal condition, the fabricated PLA displays a shining golden appearance and UV shielding property, with colour fading rate of 6% and well maintained UPF50+ rating after five cycles of washing. The mechanism study reveals that the enhanced adhesion between Qc and PLA by TTMAP is a combining effect of chemical crosslinking and physical encapsulation. In all, the method developed in this research not only pushes forward the development of next generation bio-based PLA product approaching to the targets of sustainable textile industry and global carbon neutralization, but is also transferable to the surface modification of PLA material in other fields such as medical care, functional composite, packaging.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2024
·
IF 7.7
Zhouyu Miao,Mingchen Yang,Somia Yassin Hussain Abdalkarim,Hou-Yong Yu
Visual pH-responsive packaging material is particularly important in food supply chain safety monitoring due to their non-destructive monitoring method and intuitive result. However, it has always been limited by the instability performance of pH-response components and carriers, which further hinders its wide food safety application. To address these challenges, we selected cellulose with remarkable biocompatibility and mechanical properties as the carrier, and high pH-responsive curcumin to develop a smart packaging material (RC/GC composite film) with real-time food safety monitoring. Compared with pure cellulose film, the RC/GC composite film exhibited excellent mechanical properties (4-fold enhancement) and thermal stability (100 °C increasing). Meanwhile, based on the first reported strategy of curcumin in-situ growth during cellulose film formation, the RC/GC composite film exhibited exceptional antioxidant activity (89.2 %), antimicrobial property (91.6 %), and significant pH-responsive sensitivity (within 15 s). This innovative approach offers a new strategy for easy-to-use and effective monitoring of food spoilage in packaging materials.
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