RSC Advances
·
2015
·Vol. 5
·期 87
·70743-70748
·
IF 3.84
Zhiwei Liu,Ping Li,Fuqiang Zhai,Qi Wan,Alex A. Volinsky,Xuanhui Qu
Nanostructured tungsten carbide with high surface area and containing amorphous carbon is prepared by a low temperature combustion synthesis method. The nanostructured tungsten carbide is used as the catalyst in a gas diffusion electrode. The obtained WC with different carbon content was investigated by XRD, FESEM, TG-DTA, BET and XPS. When the molar ratio of C/W is 19/3, the WC particles with different carbon content are obtained after a carbonizing process between 900 and 1400 °C, and the content of free carbon in WC also increases gradually with temperature. The carbon content is tested by the high frequency combustion-infrared absorption method in a carbon sulfur analyzer. The electrochemical properties of the tungsten carbide for the oxygen reduction reaction are characterized by its polarization curves and electrochemical impedance. The results show that the presence of the appropriate amorphous carbon is beneficial for improving the conductivity and dispersibility of the tungsten carbide catalyst, and more active centers can be provided by the catalyst.
研究领域:
材料科学
·
电化学
·
纳米催化
·
能源材料
·
表面科学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2024
·Vol. 35
·期 11
·770
·
IF 2.8
Ni Yongjian,Wang Wentian,Tang Chen,Sun Jingyuan,Zhang Weifeng,Gao Wanlei,Jin Qinghui,Jian Jiawen,Zou Jie
The Hydrogen (H 2 ) sensor based on palladium nanogaps (Pd NGs) offers the advantages of low detection limits and fast response times. It holds significant potential for early warning of H 2 leakages. However, the preparation methods of Pd NGs for such sensors are really complex. In this study, the spray-deposition method was introduced to streamline the preparation method of Pd NGs and optimize the quantity of Pd NGs by adjusting the coverage of Pd nanoparticles (Pd NPs). The effect of different coverage of Pd NPs on the gas sensing performance of the sensor was investigated. The results revealed that sensors with lower coverage exhibited higher H 2 sensitivity. The sensor exhibited a response time of 10 s at room temperature and shorten to 2 s at 100 °C in 2500 ppm H 2 . Furthermore, the sensor achieved a detection limit as low as 50 ppm. These findings offer a method for effectively optimizing the sensing performance of Pd NGs based H 2 sensors.
研究领域:
传感器技术
·
纳米材料
·
气体传感
·
功能材料
·
环境监测
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 13.2
Lijin Shi,Chenglong Xue,Xiaoyu Zhao,Yuqian Wang,Qi Shuai
To address the dual challenges of antibiotic resistance and physical barrier in Pseudomonas aeruginosa ( PA ) biofilm infection, a near-infrared light responsive nitric oxide (NO) releasing asymmetric nanomotor (MAGN) was developed to achieve efficient anti-infection through the triple strategy of “targeted recognition - autonomous penetration- synergistic antibacterial”. The MAGN surface modification of galactose enables it to actively target bacteria, thereby enhancing its accumulation at the infection site. Under the irradiation of 808 nm near-infrared light, MAGN generates heat, which on the one hand promotes the dispersion of biofilms, and on the other hand triggers the loaded nitrosoglutathione (GSNO) molecules to release NO gas. The released NO gas not only drives the autonomous movement by activating the asymmetric propulsion mechanism of MAGN to further enhance its permeability but also works in synergy with the photothermal effect to exert antibacterial efficacy deep in the infected site. In a mouse model infected with PA , MAGN demonstrated a remarkable biofilm-eliminating capability in the absence of antibiotics. In conclusion, MAGN establishes a pioneering platform that leverages targeted multi-modal synergy to achieve highly effective, antibiotic-free eradication of recalcitrant PA biofilm infections.
✓ 已验证
产品关联
DOI
高影响因子
ACS Sensors
·
2026
·
IF 10.9
Zhang Ziqiang,Yang Ruiming,Zhao Linfeng,Wang Jiabao,Wang Zhipeng,Yang Bowen,Zhang Yanlin,Zhang Yeguang,Fang Fang,Wang Peng,Li Feihu,Zhan Zili
Developing gas sensors that achieve high sensitivity, a low detection limit, and superior selectivity continues to be a critical challenge for the detection of acetone in exhaled breath. Metal oxide semiconductors (MOS) are extensively utilized in chemiresistive gas sensors, largely because of their distinguished gas sensing performance and tunable physicochemical properties. However, unmodified MOS nanostructures are prone to aggregation and lack an effective mechanism for efficient charge separation, thus exhibiting the features of limited specific surface area, low porosity, and sluggish charge migration rate, which deteriorates gas sensing performance. In this study, we employed the impregnation method and sacrificial template method to prepare a three-dimensional inverse opal (3DIO) WO 3 composite loaded with graphitic carbon nitride (g-C 3 N 4 ). This composite shows outstanding acetone sensing capability. Specifically, it achieves a response of 7.33 at 10 ppm, a detection limit of 65 ppb, favorable selectivity, and reliable stability. Such superior sensing behavior benefits greatly from the synergistic effect of abundant active sites endowed by its unique 3D ordered macroporous structure and accelerated interfacial charge transfer from the n-n heterojunction formed between WO 3 and g-C 3 N 4 . Consequently, the construction of WO 3 /g-C 3 N 4 composites with a three-dimensional ordered macroporous architecture offers a promising strategy for real-time and accurate acetone detection, as well as for the development of portable breath analysis sensors.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Environmental Chemical Engineering
·
2026
·Vol. 14
·期 5
·124100
·
IF 7.5
Qiang Zhang,Yiyang Ma,Qihua Sun,Yan Xu,Jialin Li,Zhaofeng Wu,Haiming Duan
Ethylene glycol (C 2 H 6 O 2 ) is a widely used industrial chemical whose leakage poses significant environmental and health risks, necessitating the development of efficient detection technologies. Current chemiresistive ethylene glycol sensors mostly rely on metal oxides that have high operating temperatures, poor moisture resistance, and high costs. Here, to tackle this issue, we fabricated biomass-derived carbon materials via one-step pyrolysis using raw equisetum (RE) as the abundant natural precursor. The as-obtained carbonized equisetum (CE) retains the native tubular vascular structure of the raw plant and carries trace self-doped K and Cl originating from the pristine plant. By regulating the pyrolysis temperature, the CE-4 sensor (carbonized at 400 °C) exhibits excellent room-temperature sensing performance toward ethylene glycol. On this basis, this study focused on investigating the ethylene glycol sensing mechanism of the horsetail-based biocarbon material. It systematically clarified the intrinsic correlation between the material’s defect density, surface adsorbed oxygen concentration, and carrier transport properties under pyrolysis temperature regulation. It also elucidated the regulatory mechanism of these factors on the sensing performance.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED THERMAL ENGINEERING
·
2026
·
IF 7.5
Mingxin Xiao,Xinlei Jia,Xin Kang,Zhijie Gao,Zhimin Hao,Lanjuan Xu,Qing Cao,Junling Wang,Lixin Wei
COF-hosted PAL@ZIF67 enables nanoscale P–Co–N synergistic flame retardancy. • 100 μm coating delays thermal runaway by 90 s with limited cycling impact. • Char and gas analyses support shielding, charring, and gas-phase inhibition. To improve lithium-ion battery safety, a ternary flame-retardant epoxy coating (EP/PAL@ZIF67@COF) was developed for passive thermal protection. The covalent organic framework (COF) serves as a porous host for integrating phytic acid aluminum (PAL) and ZIF67, enabling complementary condensed-phase charring, physical barrier, and gas-phase flame-inhibition effects. The coating was directly applied onto commercial 103,450 pouch cells at thicknesses of 50, 100, and 150 μm. Thermal-runaway suppression showed a non-monotonic dependence on coating thickness. The 100 μm coating extended the failure time from 1042 to 1132 s and substantially reduced combustion severity. In contrast, the 150 μm coating triggered failure at 1022 s, earlier than the uncoated cell, although visible combustion was completely suppressed. Preliminary sequential cycling and rate tests did not indicate catastrophic electrochemical performance degradation after coating. Cone calorimetry, char-residue characterization, and TG–FTIR analyses support the contributions of catalytic charring, high-temperature barrier formation, and gas-phase flame inhibition at the material level. These results demonstrate the potential of ultrathin flame-retardant coatings for cell-level passive protection and highlight the importance of coating-thickness optimization for lithium-ion battery safety. Transient CFD simulations further showed that increasing coating thickness progressively reduced the simulated thermal response, whereas elevated ambient temperature accelerated cell heating.
✓ 已验证
DOI
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Mengjia Li,Jiakun Wang,Zihao Qiu,Liang Li,Jianzhong Xu,Jinman Mao,Huimin Wang,Biao Wang,Feng Huang
Plasma activation improves the plasma-RWGS performance of La 2 CuO 4 . • Plasma activation reconstructs La 2 CuO 4 into a Cu + -enriched surface. • La-mediated electronic interactions and OVs stabilize surface Cu + species. • Cu + -enriched surface promotes coupled CO 2 and H 2 activation. While plasma catalysis enables CO 2 hydrogenation under mild conditions, catalyst activation still commonly relies on conventional high-temperature thermal pretreatments, which interrupt continuous operation and limit the practical integration of plasma catalysis with intermittent renewable energy systems. In this study, plasma activation and thermal activation were compared for the plasma-catalytic reverse water-gas shift (RWGS) reaction using La 2 CuO 4 as a precursor. Plasma-activated La 2 CuO 4 exhibited significantly enhanced CO 2 conversion compared with its thermally activated counterpart. Comprehensive structural and spectroscopic analyses, including Cu LMM Auger spectroscopy, Cu K-edge XANES, and XPS, revealed that mild plasma irradiation induced surface reconstruction, forming a Cu + -enriched and oxygen-defective surface while largely preserving the La 2 CuO 4 framework. La-involved electronic interactions and oxygen-vacancy-related reconstruction of the local Cu−O coordination environment jointly contributed to the formation and stabilization of Cu + species. CO 2 -TPD and WO 3 -assisted H 2 spillover experiments further suggested that the plasma-induced Cu + -enriched surface promoted more balanced CO 2 adsorption/activation and H 2 activation/migration, thereby contributing to efficient plasma-RWGS performance. This work offers a plasma-oriented route for in situ catalyst activation and surface-state regulation in plasma-catalytic CO 2 hydrogenation. Download: Download high-res image (183KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
DESALINATION
·
2026
·
IF 9.9
Qingji Wang,Dan Wang,Wen Luo,Zhiwei Deng,Zhengliu Xiao,Ping Wang,Hao Wang,Haowei Liu,Jingze Hu,Zhuoyu Li,Qinghong Wang,Chunmao Chen
Al salt precipitation outperformed phosphate precipitation for Li recovery from real produced water. • The optimal conditions was 65 °C, Al/Li molar ratio of 2.5, calcination at 400 °C for 60 min, and leaching for 30 min • Na + promoted Li precipitation by salting-out; organics inhibited it through complexation, site occupation, and steric hindrance. • Air flotation pretreatment increased the lithium precipitation efficiency to 84.38% and the recovery rate to 70.13%. Recovery of lithium from gas field produced water is an attractive strategy for utilizing unconventional lithium resources. However, the potential influence of complex coexisting components, including high concentrations of inorganic ions and organic compounds, on lithium precipitation behavior remain insufficiently understood. This study focused on elucidating the effects of complex coexisting components on lithium recovery by aluminum salt precipitation from real gas field produced water and evaluating an air flotation pretreatment strategy to mitigate their interference. Compared with the phosphate precipitation method, the aluminum salt precipitation method exhibits higher lithium recovery efficiency from gas field produced water containing a low lithium concentration of 50.6 mg/L. Under the optimal conditions, the highest lithium precipitation efficiency (the ratio of the amount of lithium precipitated to the total lithium content) reached 79.91%, with a lithium recovery rate (the ratio of the amount of lithium in the leach solution to the total lithium content) of 65.06% at same time. The common coexisting components in gas field produced water shared the influence on lithium precipitation with the order of Na + > organic compounds > Mg 2+ > Ca 2+ . Among them, the promoting effect of Na + was primarily associated with the salting-out effect, while the formation of NaCl crystals may provide additional contributions. Organic compounds exhibited significant inhibitory effects that may involve solution-phase complexation, surface coverage and active-site masking, and steric hindrance/aggregation interference. Using air flotation as the pretreatment could remove 55.32% of the chemical oxygen demand (COD), and 19.2% of total organic carbon (TOC), respectively, thereby improving the lithium precipitation efficiency and recovery rate to 84.38% and 70.13%, respectively. Characterization experiments confirmed that air flotation pretreatment significantly increased the relative content of the target precipitated phase of LiAl 2 (OH) 6 Cl‧nH 2 O, transforming the precipitates from a dense agglomerated structure to clearer irregular flake morphology. This study provides insights into the efficient recovery of lithium resources from real gas field produced water with complex coexisting components. Download: Download high-res image (163KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
SENSORS AND ACTUATORS B-CHEMICAL
·
2026
·
IF 8.3
Yiao Xu,Xingtai Chen,Yujun Guo,Jiayi Qu,Changsheng Ji,Davoud Dastan,Zhigang Li,Xiaoming Tan,Feifei Wang,Xiaoning Wang,Xi-Tao Yin
First report of Ce-doped CdS nanomaterials as n-butanol sensors. • Sensor exhibits a maximum response value of 224.2 at 50 ppm n-butanol. • Sensor demonstrates extremely fast response/recovery times for n-butanol. • Sensor exhibits excellent selectivity toward n-butanol. • Possesses outstanding long-term stability. Ce-doped CdS nanomaterials were successfully synthesized by a hydrothermal method. Various characterization techniques confirmed the successful substitution of Cd sites in the CdS lattice by Ce ions. Gas-sensing tests demonstrated that at an optimal Ce doping level of 1 at%, the sensor exhibited an outstanding response of 224.2–50 ppm n-butanol at 175 ℃, which is approximately 3.5 times higher than that of pristine CdS. Meanwhile, it displayed excellent response/recovery characteristics (14 s/10 s). Furthermore, the sensor showed superior selectivity toward n-butanol, with a negligible response to benzene gas. Mechanism analysis revealed that the abundant sulfur vacancies induced by Ce doping, along with the multivalent redox catalytic effect of Ce ions, are the key factors contributing to the significant enhancement of gas-sensing performance. Download: Download high-res image (142KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
Catalysts
·
2026
·Vol. 16
·期 9
·845
·
IF 4.5
Shuying Liang,Xianhong Li,Jianzhong Guo,Chunzheng Wu
Nickel-based catalysts have been extensively investigated for the reverse water–gas shift (RWGS) reaction; however, their practical application is often hindered by the undesired methanation side reaction. To address this challenge, we developed mesoporous Al2O3as a support to disperse and spatially confine Ni nanoparticles. Ni/Al2O3catalysts were synthesized via two strategies: pre-introduction of the Ni precursor during the sol–gel formation of mesoporous Al2O3and post-impregnation of the Ni precursor onto preformed mesoporous Al2O3. Compared with Ni supported on conventional γ-Al2O3, both catalysts exhibited lower CO2hydrogenation activity but significantly improved CO selectivity. Through a combination of structural characterizations and kinetic analyses, we revealed that pre-introduced Ni species were transformed into smaller Ni nanoparticles confined within the mesoporous channels, accompanied by stronger metal-support interactions. These structural features did not alter the intrinsic RWGS reaction but effectively suppressed the competing methanation reaction, thereby achieving superior CO selectivity. This study demonstrates that rational regulation of support morphology and control over metal incorporation strategies provide an effective approach for steering CO2hydrogenation toward selective CO production.
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2026
·
IF 6.6
Xiaofan Li,Xuechun Yang,Yun Guo,Lingchao Wang,Hui Guo,Yuqing Tian,Xiaotao Zhu,Yiyu Qiao,Yingying Li,Yuqi Feng
A zero-bias ZnO NRs/NPCDs/PEDOT:PSS sensor detects NH 3 and C 7 H 8 at room temperature. • N/P co-doped carbon dot-sensitized ZnO NRs exhibit superior dual-gas sensing performance. • Wireless signal transmission enables real-time monitoring on mobile and computer terminals. Conventional gas sensors often rely on external heating sources or high operating voltages, whereas many self-powered alternatives still suffer from complex materials and fabrication processes. Herein, we demonstrate a structurally simplified, low-cost, self-powered heterojunction device capable of detecting ammonia (NH 3 ) and toluene (C 7 H 8 ) at room temperature (RT) and under zero-bias operation. The device is constructed by integrating carbon-dot (CD)-sensitized, vertically aligned ZnO nanorod arrays with a poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) hole-transport layer, thereby forming an organic–inorganic p-n heterojunction. XRD, SEM, TEM, XPS, FTIR, PL, UV–vis and BET analyses confirm the formation of the CD-sensitized ZnO nanorod arrays and clarify the roles of the microstructure, surface states, and interfacial charge transfer in gas sensing. The built-in electric field promotes carrier separation, enabling zero-bias gas sensing. Elemental doping of the CDs shows that nitrogen/phosphorus co-doped CD (NPCD) modification leads to a superior dual-gas response, with the ZnO NRs/NPCDs200/PEDOT:PSS device exhibiting responses of 489% and 454% toward 100 ppm NH 3 and C 7 H 8 , respectively, outperforming the P-doped and N-doped CD-modified counterparts. Repeated cycling tests further demonstrate stable response-recovery behavior, with corresponding responses of approximately 418% and 339% toward 10 ppm NH 3 and C 7 H 8 , respectively, confirming good repeatability and cycling stability for dual-gas detection. Wireless signal transmission to mobile and computer terminals via self-developed software further highlights its potential for IoT-based remote monitoring. These results establish a practical material-and-device strategy for developing low-power, dual-gas sensors operable under ambient conditions. Download: Download high-res image (155KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
Plasma Processes and Polymers
·
2026
·Vol. 23
·期 5
·e70180
·
IF 3.2
Zimu Xu,Bin Lv,Xin Jin,Xueyan Chen,Yandan Tang,Danzhou Wu,Mengyu Zhang,Hao Zhang,Maksudbek Yusupov,Razzokov Jamoliddin,Farshad Sohbatzadeh,Zhong Qian,Huiling Shen,Shuyi Li,Shuheng Hu,Cheng Cheng
As industrialization advances, pesticide contamination in soil has raised global concern. Nonthermal plasma technology shows promise for soil pesticide remediation. However, degradation pathways and toxicity under different gas conditions are not well studied. This research investigated the use of dielectric barrier discharge (DBD) plasma for degrading diuron in soil. The choice of working gas had a significant impact on diuron degradation. Pathways varied under different gas atmospheres. Toxicity simulation showed that prolonged plasma treatment reduces the aquatic toxicity of degradation intermediates. This study highlights DBD plasma's potential for remediating diuron-contaminated soil under various gas conditions.
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）