Journal of Environmental Chemical Engineering
·
2025
·Vol. 14
·期 1
·120629
·
IF 7.2
Lijun Hu,Qian Huang,Meng Li,Ju Zhang,Qi Xue,Jiayi Wang,Caiwen Li
The parasitic dinoflagellate in Hematodinium genus causes significant economic losses to fishery and aquaculture of multiple valuable marine crustaceans. It is practically needed to develop an effective and environmentally compatible method to control the Hematodinium epidemics in mariculture. In the present study, a novel Z-scheme composite photocatalyst was synthesized successfully using Zinc oxide (ZnO) and Copper Metal-Organic Framework (Cu-MOF), The N-Cu-MOF photocatalyst showed superior charge carrier separation efficiency compared to Cu-MOF, and exhibited significantly improved visible-light absorption in contrast to the activation of ZnO only under UV light. The ZnO/N-Cu-MOF photocatalyst demonstrated excellent inactivation of Hematodinium perezi microspores, with half maximal inhibitory concentration (IC 50 ) values of 3.12 mg/L at 1 h and 1.01 mg/L at 2 h. The inactivation effects involved the generation of large amounts of intracellular reactive oxygen species (ROS), which induced oxidative stress and disrupted the membrane and flagella structural integrity of the dinospores, ultimately leading to cell necrosis induced by oxidative damage. The present study provided a new insight and approach for seawater treatment of mariculture facilities, thereby to prevent and control spreading of Hematodinium epidemics in commercially valuable crustaceans.
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Surfaces and Interfaces
·
2025
·
IF 6.3
Ying-Jiao He,Liang-Hong Shu,Yan Xiong,Qun-Zeng Huang
Development of highly-efficient heterostructured photocatalysts capable of fully utilizing full solar spectrum has emerged as a focal point in photocatalytic H 2 evolution from water splitting. Herein, Mn 0.2 Cd 0.8 S/MoSe 2 composite was successfully constructed by attaching full-spectrum responsive MoSe 2 nanospheres on surface of Mn 0.2 Cd 0.8 S polyhedra via in-situ hydrothermal process. The optimal Mn 0.2 Cd 0.8 S/MoSe 2 -5wt% composite photocatalyst yielded the H 2 evolution rate of 34.31 mmol g –1 h –1 under full-spectrum light, significantly surpassing the activities obtained under near-infrared (NIR), ultraviolet (UV), visible (Vis), Vis-NIR and UV-Vis light alone. This outstanding property could be attributed to the synergetic effects of p−n heterojunction and photothermal effect, effectively accelerating interfacial charge transfer, elevating reaction system's temperature and expediting surface reaction, thereby promoting the photocatalytic reaction of Mn 0.2 Cd 0.8 S. This study offers a valuable perspective on utilizing MoSe 2 to construct an efficient photothermal-assisted photocatalysis system.
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DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY
·
2021
·
IF 3.636
Ling Zhang,Li-na Yao,Wei Liu,An-qi Chen,Shi-min He,Mei-li Wei,Zi-xuan Fan,Da-long Ren
N-acetylcholine receptors (AChRs) are mainly distributed in the postsynaptic membrane and have been widely studied for their control of muscle contraction by regulating neural action potentials. However, the influences of AChRs on immune responses and potential mechanisms remain unclear. Here, we used the advantages of live imaging of zebrafish to explore the regulation process of AChRs on inflammatory responses. Pharmacologically activating of the receptor, we found that the expression of pro-inflammatory cytokines il-1β, il-6, tnf-α and il-8 was significantly up-regulated and neutrophil migration to injury sites was also significantly increased. However, these phenomena were reversed under antagonism of the receptor activity. Results showed that interfering with nAChRs functions did not significantly affect zebrafish motion behavior. Results also showed that activation and antagonism of nAChRs function could regulate the phosphorylation of ERK protein respectively. We further demonstrated that ERK participated in the regulation of AChRs in cytokines expression and neutrophils migration in zebrafish. This study preliminarily revealed the roles of AChRs in inflammatory processes and their potential mechanism, providing additional evidence of peripheral immune regulation by cholinergic receptors.
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PubMed
高影响因子
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
·
2025
·
IF 4.6
Hong Tian,Yumin Li,Qingping Dai,Shunlang Wei,Bing Lv,Jun Wei,Yupei Qiao
FeVO 4 is recognized as a potential photoelectrode material on account of its relatively narrow bandgap and suitable conduction and valence band positions. However, its photoelectrochemical water splitting performance remains unsatisfactory owing to rapid carrier recombination and poor charge transport capabilities. Herein, a novel p-n FeVO 4 /AgVO 3 heterostructure photoanode was developed by depositing p-type AgVO 3 nanowires onto n-type FeVO 4 nanoporous structures, boosting the PEC properties of the base material. The incorporated AgVO 3 nanostructures enhance light absorption in the visible spectrum, facilitate effective electron-hole separation through optimized interfacial charge transport pathways, and simultaneously extend the carrier lifetime. The built-in electric field in the p-n heterostructure promotes more effective separation and directional motion of photoinduced charge carriers. As a result, the transient photocurrent density of the FeVO 4 /AgVO 3 heterojunction photoanode reaches 0.22 mA cm −2 , which is 3.35 times that of bare FeVO 4 (0.06 mA cm −2 ). Notably, the incorporation of AgVO 3 nanowires significantly improves the photostability of the FeVO 4 photoanode. This work provides a feasible strategy from the perspective of interface engineering for designing high-performance FeVO 4 -based photoelectrodes to enhance photoconversion efficiency.
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INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
·
2025
·
IF 3.9
Mengxue Li,Juanjuan Wang,Nana Zhu,Yang Zong,Rui Jiao,Zhaoqi Zhu,Hanxue Sun,An Li
Fe–N–C catalysts are some of the most promising catalysts for the oxygen reduction reaction (ORR). However, there are still some problems in the pyrolysis of precursors, such as the destruction of the carbon skeleton and low utilization of active sites. In this work, we synthesized hollow pyridine N-containing conjugated microporous polymers (CMPs) by coupling polymerization. The bipyridine units in CMPs’ skeleton can anchor Fe3+ to form a stable coordination structure, which was effectively converted into Fe–N–C catalysts by one-step pyrolysis. Due to the rigid skeleton of precursors, the hollow structure was preserved in catalysts, which is favorable to O2 diffusion and mass transport of intermediates. X-ray photoelectron spectroscopy and Fe K-edge X-ray near-edge spectroscopy revealed approximate FeN4 structures within the framework of the catalysts. As a result, the resulting CMP-derived catalysts exhibited satisfactory ORR activity in alkaline media with a limiting current density of 4.40 mA cm–2. Furthermore, the Fe,N–C1–900 catalyst demonstrated exceptional methanol immunity with a mere negative shift of 0.01 mA cm–2 in limiting current density compared with the commercial Pt/C catalyst, indicating remarkable stability.
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Molecular Catalysis
·
2025
·
IF 4.9
Xingguo Yang,Xinhuan Lu,Qinjun Zhang,Hao Liu,Haotian Guo,Lin Zhao,Dan Zhou,Qinghua Xia
The selective hydrogenation of cinnamaldehyde (CAL) to cinnamyl alcohol (COL) is challenging because the hydrogenation of C = C bonds is thermodynamically favored over that of the C = O group. In this work, Ni 3 /Fe@CN-x materials prepared by loading metal Ni onto carbon materials derived from Fe-ZIF were successfully used to selectively hydrogenate the C = O bond of cinnamaldehyde, while single metal Ni@CN-x materials derived from Ni-ZIF materials were successfully used to selectively hydrogenate the C = C bond in the side chain of CAL. Both catalysts shows admirable catalytic activity in the selective hydrogenation reaction of CAL. The reaction results show that the introduction of Ni species into Fe@CN-350 material significantly improved the conversion of CAL and the selectivity of COL, which is attributed to the synergistic effect of bimetallic Ni and Fe, and the excellent hydrogenation activity of metallic Ni. The Ni 3 /Fe@CN-350 catalytic system can achieved 94.3 % CAL conversion and 86.3 % COL selectivity, and the catalyst could be stably recycled 5 times. Under mild conditions (90 °C, 4 h), the single metal Ni@CN-600 catalytic system achieved 100 % CAL conversion and >99 % hydrocinnamaldehyde (HCAL) selectivity, and the catalyst could be stably recycled 10 times.
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Journal of Materials Chemistry A
·
2015
·Vol. 3
·期 46
·23352-23359
·
IF 7.443
Wuxue Zhao,Sheng Han,Xiaodong Zhuang,Fan Zhang,Yiyong Mai,Xinliang Feng
A new series of B, N-containing cross-linked polymers (PPs-BN) were achieved via Sonogashira cross coupling. These polymers exhibit very high carbon yields of around 70–80% even at 800 °C, which allow them to be efficiently converted to B/N co-doped porous carbons after pyrolysis at high temperature under an inert atmosphere. The materials have been fully characterized by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analyses, nitrogen sorption measurements and X-ray photoelectron spectroscopy, revealing their high contents of boron and nitrogen up to ∼3.21% and ∼5.72%, respectively, as well as porous structures with the largest specific surface area of 291 m2 g−1. Their CO2 capacities reached 3.25 mmol g−1 at 273 K under 1 atm. In addition, the very high selectivity for CO2/CH4 with a ratio of more than 5 : 1 at 298 K renders them applicable for gas separation and purification.
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高影响因子
CARBON
·
2019
·
IF 7.466
Lulu Chai,Linjie Zhang,Xian Wang,Leqiong Xu,Cheng Han,Ting-Ting Li,Yue Hu,Jinjie Qian,Shaoming Huang
The search on low-cost, ultra-stable, and high-performance non-novel metal replacements to the Pt-based catalysts for oxygen reduction reaction (ORR) is of great urgency. Herein, a bottom-up method has been proposed to synthesize unique hollow N-doped carbon spheres (HNCSs) from an initial amorphous coordination polymer (CP) template-assisted route for the first time. HNCSs exhibit competitively comparable high electrocatalytic ORR activity, excellent reaction selectivity , and stronger long-term stability and negligible methanol crossover effect compared to the commercial Pt/C under the alkaline medium . Together with the other two reported carbonaceous ORR catalysts, including SCSs and NGPCs , our HNCSs possess the lowest Tafel slope of 65.7 mV dec −1 which is close to Pt/C (62.6 mV dec −1 ), and show much enhanced ORR activity (J L = 5.34 mA cm −2 ) and stability (Retention = 96.5%, Time = 10 h). This CP-templated route for hollow carbon materials will shed light on a new synthetic strategy to prepare high-performance carbon-based and/or metal-free ORR catalysts.
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高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2018
·
IF 3.779
Dengke Zhao,Ligui Li,Lihong Xie,Ni Zhou,Shaowei Chen
Sulfur- and nitrogen-codoped peapod-like carbon nanotubes are facilely prepared via pyrolyzing Fe- and Co-containing Prussian blue analogues supported on trithiocyanuric acid. Combined studies with X-ray diffraction, X-ray photoelectron spectroscopy and high-resolution transmission electron microscopy measurements reveal the encapsulation of metallic FeCo alloy in such carbon nanotubes with a wall thickness of ca. 2.60 nm. Electrochemical measurements show that sulfur codoping with nitrogen dramatically enhances the catalytic activity towards oxygen reduction reaction compared with that of FeCo alloy encapsulated in N-doped only carbon nanotubes, and the sample prepared at a pyrolysis temperature of 800 °C is the best one among the series, exhibiting a more positive half-wave potential of +0.838 V, nearly 100% enhancement in kinetic current, a higher operation stability and stronger immunity to the negative impacts of fuel crossover than commercial Pt/C catalysts. The remarkable improvement of catalytic activity is ascribed to the intensified charge transfer from encapsulated FeCo alloy nanoparticles to thin walls of CNTs upon the additional sulfur doping besides nitrogen. The present results highlight the importance of deliberate doping and structuring in the development of more efficient catalysts based on metal nanoparticles encapsulated in CNTs for high-performance electrochemical energy devices.
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高影响因子
WATER SCIENCE AND TECHNOLOGY
·
2018
·Vol. 77
·期 5
·1441-1448
·
IF 1.247
Li Yuejin,Shang Xili,Li Changhai,Huang Xiaoming,Zheng Jingjing
Novel visible-light-induced UiO-66/BiOI photocatalysts with a p–n junction structure have been prepared for the first time through a facile hydrothermal method. The prepared photocatalysts were characterized using the powder X-ray diffraction, high resolution transmission electron microscopy, scanning electron microscopy, UV–visible diffuse reflectance spectra, and N 2 adsorption–desorption (Brunauer–Emmett–Teller) techniques respectively. The photodegradation performances of UiO-66/BiOI photocatalysts were evaluated by photodegrading salicylic acid under visible-light irradiation. The UiO-66/BiOI composites displayed much higher photocatalytic efficiencies than pure BiOI under visible light. When the content of UiO-66 was 5.2 wt%, the composite (UiO-66/BiOI-2) has the best photocatalytic activity. Most of the salicylic acid molecules can be degraded in 100 min. The degradation rate of UiO-66/BiOI-2 samples is higher than single BiOI and UiO-66. The enhanced photocatalytic performance of UiO-66/BiOI may be ascribed to the formation of p–n heterojunctions between BiOI and UiO-66, which facilitates the transfer and separation of the photogenerated charge carriers. After recycling of the photocatalyst for five times for the photodegradation of salicylic acid, more than 85% of salicylic acid could still be degraded in the fifth cycle, implying that the as-prepared photocatalysts are highly stable.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2017
·
IF 6.216
Qianxu Ye,Juanjian Ru,Jinhui Peng,Guo Chen,Ding Wang
Herein, the multiporous MnO/N-doped carbon (MnO/NC) composite based on the abundant and inexpensive electrolytic manganese dioxide were fabricated through a facile microwave-assisted carbonthermal reduction, combined with a subsequent in-situ polymerization of polydopamine onto MnO along with thermal treatment. As an anode material, it retains a reversible capacity of 770.5 mAh g −1 at 300 mA g −1 and high Coulombic efficiency of 99% over 500 cycles, superior than those values of the pure multiporous MnO alone. The impressive performance is attributed to the splendid structure stability contributed by well-connected three-dimensional porous configuration and the enhanced reaction kinetics as well as electrical conductivity incurred by N-doped carbon layer with multiple type nitrogen.
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高影响因子
CHINESE SCIENCE BULLETIN
·
2007
·Vol. 52
·期 2
·194-199
·
IF 0.722
Wu Hua,Zeng XiangQiong,Lu LingBo,Ren TianHui
Two di-n-butyl dithiocarbamate derivatives were easily synthesized. Their tribological performances as lubricating oil additives in rapeseed oil were evaluated using a four-ball machine, and their chemistry of films was analyzed with X-ray absorption near-edge spectroscopy (XANES). The results indicate that the two compounds possess excellent anti-wear property and good load-carrying capacity. According to the XANES results, for the thermal films, the outer surfaces are mainly composed of N, S-containing polymer and ferric sulfate, and the near-surface and the bulk are composed of ferrous sulfate, while for the anti-wear films, the outer surfaces are only composed of ferric sulfate, but the near-surface and the bulk are mainly composed of ferrous sulfate.
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