Nature Communications
·
2024
·Vol. 15
·期 1
·1-11
·
IF 14.7
Pei An,Wang Peng,Zhang Shiyi,Zhang Qinghua,Jiang Xiaoyi,Chen Zhaoxi,Zhou Weiwei,Qin Qizhen,Liu Renfeng,Du Ruian,Li Zhengjian,Qiu Yongcai,Yan Keyou,Gu Lin,Ye Jinyu,Waterhouse Geoffrey I. N.,Huang Wei-Hsiang,Chen Chi-Liang,Zhao Yun,Chen Guangxu
Challenges in direct catalytic oxidation of biomass-derived aldehyde and alcohol into acid with high activity and selectivity hinder the widespread biomass application. Herein, we demonstrate that a Pd/Ni(OH) 2 catalyst with abundant Ni 2+ -O-Pd interfaces allows electrooxidation of 5-hydroxymethylfurfural to 2, 5-furandicarboxylic acid with a selectivity near 100 % and 2, 5-furandicarboxylic acid yield of 97.3% at 0.6 volts (versus a reversible hydrogen electrode) in 1 M KOH electrolyte under ambient conditions. The rate-determining step of the intermediate oxidation of 5-hydroxymethyl-2-furancarboxylic acid is promoted by the increased OH species and low C–H activation energy barrier at Ni 2+ -O-Pd interfaces. Further, the Ni 2+ -O-Pd interfaces prevent the agglomeration of Pd nanoparticles during the reaction, greatly improving the stability of the catalyst. In this work, Pd/Ni(OH) 2 catalyst can achieve 100% 5-hydroxymethylfurfural conversion and >90% 2, 5-furandicarboxylic acid selectivity in a flow-cell and work stably over 200 h under a fixed cell voltage of 0.85 V.
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高影响因子
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
·
2024
·Vol. 130
·期 10
·1-12
·
IF 2.5
Tang Mingxin,Qin Cong,Sun Xueya,Li Mengwei,Wang Yihui,Cao Jianliang,Wang Yan
Hydrogen (H 2 ) energy, as a clean energy source, has high energy density and durability, while H 2 is flammable and explosive, which requires strict safety technology measures to ensure the safety of high-pressure storage transportation. Therefore, the development of sensitive sensors is needed. In this study, In 2 O 3 microspheres with different Pd loadings were fabricated by hydrothermal method. Compared with the pristine In 2 O 3 gas sensor, the optimal operating temperature of the In 2 O 3 sensor is reduced from 160 ℃ to 80 ℃ after loading Pd. Among the prepared Pd/In 2 O 3 gas sensors, the response value of the 2 at% Pd/In 2 O 3 sensor towards 1000 ppm H 2 is 50.743 at 80 ℃. The response/recovery time is 80 s/235 s. The improved H 2 sensing performance can be ascribed to the chemical and electron sensitization of Pd, and the formation of PdO, PdH x . This study shows that Pd-loaded In 2 O 3 can effectively reduce the optimal operating temperature and enhance the response value for detecting H 2 in the range of 5-5000 ppm. Therefore, this sensor has good application prospects for detecting H 2 at low temperatures.
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MICROCHIMICA ACTA
·
2024
·Vol. 191
·期 10
·1-12
·
IF 5.3
Xiao Rongsheng,Dai Hongliang,Liu Xingyu,Qi Jingwen,Bao Meishuo,Wang Xingang,Li Mingde,Zhang Wuxiang,Yan Dengxin
A novel colorimetric approach specifically designed to effectively identify the presence of 3-aminophenol (3-AP) in environmental water is introduced. Briefly, a nitrogen-doped carbon-supported cobalt nanozyme (Co@CN-1) was synthesized and utilized to improve the oxidation of 3,3',5,5'-tetramethylbenzidine (TMB) in the presence of peroxymonosulfate (PMS). Comparative catalytic reactions confirmed that the performance of PMS as an activator exceeds that of hydrogen peroxide catalytically by a factor of 3.5. The catalytic reaction parameters underwent optimization, further resulting in the derivation of a linear detection equation for 3-AP, expressed as inhibition rate (IR%) = 3.35[3-AP]—4.36 (0–20 μM, R 2 = 0.994) and IR% = 1.43[3-AP] + 31.87 (20–36 μM, R 2 = 0.992), with the limit of detection (LOD) of 2.84 μM. The linear relationship between 3-AP concentration and the conversion of color to grayscale value (GSV) was established by smartphones, expressed as GSV = 1.28[3-AP] + 147.10 ( R 2 = 0.972). Density functional theory calculations revealed that Co acts as the preferred active site for donating electrons in PMS activation. This work provides a rapid and accurate approach for monitoring 3-AP concentration, enabling real-time analysis and potentially contributing to environmental and ecological studies. Graphical Abstract
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JOURNAL OF POLYMER RESEARCH
·
2024
·Vol. 31
·期 10
·1-12
·
IF 2.6
Yang Renyu,Gan Lin,Huang Jin
Electromagnetic coatings on aircraft need high heat tolerance because high-speed friction bring high temperature. However, high molecular interaction and strong bonding, related to high heat-resistance, lower down the molecular motion ability, causing non-uniform dispersion of conductive fillers, especially for the epoxy type coatings, which has crosslink network. Here, we developed a novel curing system merging diethylenetriamine and dicarboxylic phthalimide to enhance temperature resistance and filler dispersion in epoxy resin. This system allows imide, strong bonding to enhance heat-resistance, to extend the chain of the epoxy resin, maintaining the molecular motion ability and optimizing the dispersion of fillers. Our study reveals that the epoxy composite’s decomposition temperature rises to 383.8℃, suitable for speeds exceeding Mach 3. Additionally, the percolation threshold for carbon black fillers drops to 8.1 vol. %, much lower than the traditional volume-exclusive systems ( ca. 70 vol. %). This finding confirms the maintained molecular motion ability of epoxy segments in crosslink netwrok. The electrical performance with volume resistivity dropping to 0.2 Ω·m when filler content is at the percolation threshold, meeting anti-static product requirements. This work proves that designing chain extenders can achieve high heat tolerance with minimal influence in crosslink and conductive networks.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·
IF 0
Deb Hridam,Hasan Md Khalid,Islam Md Zahidul,Yang Shujuan,Zhang Yong,Yao Juming
Graphene-based adsorbent was prepared by adopting a green synthetic route via the chemical exfoliation of graphite and low-temperature thermal activation. Prepared reactive graphene (RG) was characterized through various techniques, and its adsorption capabilities for textile dye removal were investigated for Acid Blue-93 (AB) and Reactive Red-195 (RR) under different operational conditions. The dye sorption equilibrium and mechanism were comprehensively studied using isotherm and kinetic models and compared statistically to explain the sorption behavior. Results show AB and RR adsorption by RG attains equilibrium in 60 min and 70 min, with a high sorption quantity of 397 mg g −1 and 262 mg g −1 (initial dye concentration of 100 mg L −1 ), respectively. The dye sorption anticipates that the high surface area (104.52 m 2 gm −1 ) and constructed meso-macroporous features of RG facilitated the interaction between the dye molecules and graphitic skeleton. The R-P isotherm fitted the best of equilibrium data, having the least variance in residuals for both dyes (AB = 0.00031 and RR = 0.00047). The pseudo-second order model best fitted the kinetics of sorption on RG, with chemisorption being the predominant process delimiting step. The overall results promise the dye removal capability of RG to be an efficient adsorbent for azo-based dyes from textile effluents.
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Nature Communications
·
2025
·Vol. 16
·期 1
·1-12
·
IF 15.7
Li Chun-Bo,Wang Fang,Wang Yi-Yang,Guo Mei-Lin,Li Jin-Le,Deng Cong,Song Fei,Yang Wei,Wang Yu-Zhong
Superamphiphobic and flame-retardant fabrics offer effective protection for firefighters and industrial workers operating under hazardous conditions. However, limitations in deformation resistance, wear comfort, and environmental adaptability hinder their practical applications. Here, a monolithic hierarchical macro-/micro-/nanostructure is constructed to achieve durable repellency against water and oils, even under significant deformations. This coating integrates fluorinated nanoparticles, flame retardant microparticles, and a cross-linking adhesive. Hydrogen bonding and the adhesive define the coating’s morphology, robustness, and adaptability. The coated surface exhibits an ultralow water adhesion force (0.002 mN) and excellent anti-fouling performance against extreme temperatures (100 °C, −196 °C) and corrosive liquids, including aqua regia and concentrated H 2 SO 4 . Upon fire exposure, the coating enables self-extinguishing behavior on cotton fabrics. The coated fabrics also demonstrate remarkable mechanical and UV resistance while preserving wear comfort. Overall, we achieve a balance between desirable properties and wear comfort in superamphiphobic, flame-retardant fabrics, enabling protective clothing applications previously unattainable.
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WATER AIR AND SOIL POLLUTION
·
2024
·Vol. 235
·期 9
·1-11
·
IF 3.8
Wei Hongyan,Li Xuejiao,Chen Lizhu,Li Shujie,Liu Hongxu,Song Tiehong
At present, the visible light (Vis) catalytic oxidation, as a wastewater treatment approach without secondary pollution, has captured the interest of many researchers. However, the efficiency of visible photocatalysis still needs to be continuously improved. In this study, a piezoelectric photocatalyst Bi 2 WO 6 (BWO) responding to both Vis and ultrasound (US) was prepared, characterized, and employed to treat Rhodamine B (RhB) in water. The removal efficiencies of RhB under different systems (Vis/BWO, US/BWO, (Vis + US)/BWO) were investigated and the reuse capacity of BWO were examined. Moreover, the piezoelectric photocatalytic mechanism of (Vis + US)/BWO system on RhB removal was analyzed. The results exhibited that the prepared Bi 2 WO 6 possessed excellent photoresponsive and piezoresponsive properties, and the removal and mineralization of RhB could reach 100% and 77.2% within 60 min, respectively. Under the combined effect of photocatalysis and piezoelectricity, the superoxide radicals, hydroxyl radicals, and photogenerated holes produced, which were responsible for the degradation of RhB in (Vis + US)/BWO system. Graphical Abstract
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JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 25
·1-18
·
IF 2.8
Tang Meng,Zheng Lijia,Ge Ming
BiVO 4 photocatalysts with distinct morphology were solvothermally prepared by regulating the pH of precursor solution. The physicochemical properties of BiVO 4 catalysts were characterized using XRD, SEM, EDS, FT-IR and UV-Vis DRS. With the assistance of peroxydisulfate (PDS), as-obtained BiVO 4 could effectively degrade the cationic dye rhodamine B (RhB) and the anionic dye methyl orange (MO) under visible-LED-light illumination. RhB degradation obeys the first-order kinetic, while MO degradation complies with the second-order kinetic. Short stick-like BiVO 4 (named as BiVO 4 -1) showed the best RhB degradation efficiency, and sheet-like BiVO 4 (named as BiVO 4 -9) had the highest MO degradation rate. The influence of some important operating factors (PDS dose, BiVO 4 dosage, temperature, inorganic anions and humic acid) on the degradation of RhB and MO were discussed. In the BiVO 4 -1/PDS/Vis system, the free radical pathway (O 2 •‒ , SO 4 •‒ , •OH) and the non-radical pathway ( 1 O 2 and h + ) acted together to realize the degradation of RhB; however, in the BiVO 4 -9/PDS/Vis system, MO degradation was mainly dominated by the non-radical oxidation pathway ( 1 O 2 and h + ).
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JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2024
·
IF 2.6
Ravichandran Balamurali,Narayanan Naresh,Ravichandran Sabarinathan,Liu Huiyuan,Zhang Weiqi,Bhuvanendran Narayanamoorthy,Su Huaneng
In this study, PtCo alloy nanoparticles (NPs) were successfully synthesized and deposited on nitrogen-rich carbon nanosheets derived from Polypyrrole-g-C 3 N 4 using a chemical reduction method. This electrocatalyst not only offers enhanced catalytic efficiency but also significantly improves the stability for the oxygen reduction reaction (ORR) in in acidic medium. In terms of electrocatalytic performance, the PtCo/CN@PPY-g-C 3 N 4 catalyst demonstrated a mass activity of 0.378 mA µg Pt −1 at 0.85 V, 0.131 mA µg Pt −1 at 0.9 V and a specific activity of 2.900 mA cm Pt −2 at 0.85 V, 1.004 mA cm Pt −2 at 0.9 V which are respectively 2.3, 2.8 and 10, 12 times higher than those of a commercial 20% Pt/C catalyst (0.166 mA µg Pt −1 at 0.85 V, 0.046 mA µg Pt −1 at 0.9 V and 0.285 mA cm Pt −2 at 0.85 V, 0.079 mA cm Pt −2 at 0.9 V). This indicates superior catalytic activity. Furthermore, after 5000 cycles, the PtCo/CN@PPY-g-C 3 N 4 retained approximately 77% at 0.85 V and 83% at 0.9 V of its initial mass activity, with only a 14 mV decrease in the half-wave potential, whereas commercial 20% Pt/C catalyst retained only 40% at0.85 V and 30% at 0.9 V of its initial mass activity. These enhancements can be attributed to the synergistic effects and strong interactions between the Pt–Co alloy nanoparticles and the carbon nitride support. The findings of this study underscore the potential of PtCo/CN@PPY-g-C 3 N 4 as a viable and efficient alternative to traditional catalysts in electrochemical applications.
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Journal of Food Measurement and Characterization
·
2025
·
IF 3.3
Wu Yi,Hu Hui,Yang Guangzhen,Chen Yifan,Zhong Xiaoyu,Li Shanshan,Pan Ming,Li Yuanbin,Zhang Jiaheng
Natural deep eutectic solvents (NaDESs) with ultrasound-assisted (UAE) method was used to improve the extraction efficiency of polysaccharide from black truffles, which can overcome the limitations of conventional methods. It demonstrated that the extraction efficiency of polysaccharide by six NaDESs with UAE were better than those of conventional solvents. Among the NaDESs, betaine-citric acid (BetCi) NaDES showed the best performance, achieving a remarkable extraction yield of 9.38%, outperforming water, ethanol, and 1,3-butanediol by 0.4, 11.5 and 11.0 times, respectively. Moreover, the polysaccharide yield was further optimized by response surface method, based on three influence factors (NaDES concentration, liquid-to-solid, and ultrasonic time). Scanning electron microscopy images showed that compared to the traditional extraction methods, the plate-like structure fractured into smaller pieces of black truffles treated by BetCi NaDES with UAE, indicating deeper interactions between NaDES and black truffles. Furthermore, the skin penetration as well as antioxidant and anti-wrinkle properties of the black truffle polysaccharide extract were evaluated, revealing promising bioactivity. Overall, this study represents a comprehensive exploration of novel extraction methods, highlighting efficient polysaccharide extraction and its potential applications.
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JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2024
·Vol. 149
·期 12
·5985-5994
·
IF 3
Liao Xueqin,Du Longjin,Sun Mengxia,Liu Hui,Liu Jianzhong
Aluminum has been long and widely used in propellants, thermite, and pyrotechnics. However, the commonly used micron aluminum has the problems of slow burning rate and incomplete release of chemical energy in the combustion process. Therefore, finding ways to promote the ignition and combustion of aluminum is essential to enhance the performance of aluminum-based energetic materials. Herein, environmentally friendly tannic acid (TA) and tea polyphenols (TP) were used to surface modify aluminum to improve its combustion performance, respectively. The results showed that TA and TP could be coated on the outer surface of aluminum particles effectively by solvent evaporation induced self-assembly method. Heat was released during the thermal decomposition of the composite particles, which was clearly beneficial in promoting aluminum ignition. Ignition and combustion tests showed that after modification with TA and TP, the samples showed shorter ignition delay, increased combustion time, increased combustion intensity, and reduced agglomeration compared to pure aluminum. This revealed that the modified samples possessed better ignition and combustion properties. The X-ray diffraction patterns of the condensed combustion products showed that the products of pure aluminum possessed more active aluminum and aluminum nitride, while the samples modified with TA and TP had more γ-Al 2 O 3 and α-Al 2 O 3 , suggesting that TA and TP could effectively enhance the combustion efficiency of aluminum. In addition, TP showed better modification than TA, which may be related to the higher heat release during thermal decomposition of TP. Although TA and TP can improve the ignition and combustion performance of aluminum to some extent, the enhancement effect is limited. Considering that TA and TP possess good adhesion, perhaps they can play a better role in promoting as intermediate layers in the future. It is hoped that this paper can provide a new idea for the surface modification of aluminum.
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EUROPEAN FOOD RESEARCH AND TECHNOLOGY
·
2025
·
IF 3.2
Liu Xiaolong,Peng Wu,Ouyang Hui,Wang Ping,Yu Xiongwei,Xie Tingting,Huo Jiaying,Li Shugang
The oxidative stability of walnut kernels during storage has a significant impact on their industrial development. However, the effect of storage conditions on the oxidation of walnut kernel lipids and its mechanism have not been systematically elucidated. Therefore, in this study, the lipid oxidation process in walnut kernels under different storage conditions (room temperature-air, room temperature-vacuum, low temperature-air, and low temperature-vacuum) was systematically studied from the perspective of phenomena, substances, and mechanisms using HPLC–MS and GC–MS methods. Experimental results found the walnut kernels stored at room temperature in air showed the highest PV (7.78 mmol/kg), conjugated diene (1.29), and hexanal (848.65 ng/g) after a 9-month storage. A total of 597 lipid substances were detected in walnut kernels under the four storage conditions, including 5 classes and 26 subclasses, of which 115 were significantly different. Differential lipid metabolite analyses indicated that storage conditions mainly affected the glycerophospholipid and glycerolipid metabolic pathways of walnut kernels, followed by linoleic acid metabolism. It revealed that temperature, rather than air conditions, played a dominant role in the lipid oxidation of walnut kernels during storage. This experiment could provide a comprehensive understanding of the lipid oxidation of stored walnut kernels and technical support for quality control. Graphical abstract
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危险品化学品经营许可证（带存储）