COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Hanlin Shao,Ruth Caroline Etroubeka,Zhihao Chen,Duanzhi Li,Xiaoshuang Yin,Hui Xu,Ying Liu,Yan Zhang,Wenzhong Yang
In this work, silicon dots (SiDs) were synthesized and surface-engineered by introducing Gum Arabic (GA), which were utilized as novel non-metallic quantum dots corrosion inhibitors for Q235 carbon steel in HCl solution. A comparative analysis was conducted on the synthesis, characterization, and inhibition performance, confirming the surface engineering can enhance their anticorrosion ability while maintaining the excitation and emission properties. Weight loss tests confirmed a corrosion rate decrease from 8.38 g·m –2 ·h –1 (blank) to 0.53 g·m –2 ·h –1 (100 mg/L GA-SiDs), achieving 93.68 % inhibition efficiency. Electrochemical tests revealed a polarization resistance of 1013 Ω cm 2 for GA-SiDs, significantly higher than the blank (54.88 Ω cm 2 ), while polarization curves confirmed mixed-type inhibition with a corrosion current density reduction to 1.48 × 10 –4 A·cm –2 . Thermodynamic and surface/interface analysis demonstrated the inhibition mechanism: physical adsorption interaction, chemisorption coordination, and hydrophobic film formation. This work provides a sustainable strategy for designing non-metallic quantum dot inhibitors, combining high performance, cost-effectiveness, and environmental compatibility.
研究领域:
材料科学
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腐蚀与防护
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表面工程
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2022
·
IF 7.336
Jinlong Wei,Junli Wang,Xuanbing Wang,Wenhao Jiang,Nianxiang Hu,Li Wang,Min Li,Ruidong Xu,Linjing Yang
Designing active and durable cost-effective electrocatalysts for catalyzing the oxygen evolution reaction (OER) under a strongly acidic environment is a highly promising approach for OER-associated sustainable energy supplies. Herein, a Pb-Sn-Ca/α-PbO 2 /β-PbO 2 -Mn 2 O 3 (PSC/PbO 2 -Mn 2 O 3 ) composite electrode is fabricated via a simple two-step process. First, porous Mn 2 O 3 microspheres are synthesized by the solvothermal method . Then, a PSC/PbO 2 -Mn 2 O 3 composite electrode with a special embedded structure is prepared through the introduction of Mn 2 O 3 by composite electrodeposition . The low OER overpotential (621 mV) of the PSC/PbO 2 -Mn 2 O 3 (12 g L −1 ) composite electrode is reduced by 445 mV compared with that of the industrial Pb-(0.76 wt%) Ag electrode at a current density of 50 mA cm −2 . In addition, it shows a service life of up to 91 h at a high operation current density of 1.5 A cm −2 in acidic media (3.06 g L −1 H + ), which indicates its excellent stability. Therefore, this work not only demonstrates a design for a durable and high-efficiency electrocatalyst for acidic water oxidation but also provides strategies for the synthesis of advanced electrocatalytic electrodes.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
·
2025
·Vol. 172
·期 3
·034516
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IF 3.3
Fadong Miao,Yuanyi Xiang,Wenbin Tang,Rongzhong Yang,Yi Zhou,Qinghong Huang,Nengfei Yu,Yuping Wu
Designing efficient and stable oxygen evolution reaction (OER) catalysts is crucial for advancing water electrolysis technologies toward sustainable hydrogen production. Ruthenium pyrochlore oxide (A2Ru2O7−δ) has attracted much attention due to its high OER catalytic activity and low cost. However, their catalytic activity and stability require further improvement to achieve commercial viability. In this study, a series of Pt-deposited Yttrium ruthenate (Y2Ru2O7−δ, YRO) bifunctional catalysts Pt(x%)-Y2Ru2O7 were prepared by hydrothermal and heat treatment methods. In an acidic environment, the OER activity and stability were significantly improved compared with YRO, and hydrogen evolution reaction (HER) performance gradually improved. Among them, Pt(25%)-YRO showed excellent OER (η10 = 260 mV, 43.1 mV dec−1) and HER (η10 = 120 mV, 51.2 mV dec−1) performance. In addition, Pt(25%)-YRO demonstrated excellent catalytic stability, with both the OER and the overall water splitting reaction maintaining stable operation at 10 mA cm−2 for over 50 h. This provides a new approach for developing high-activity, high-stability, dual-function water electrolytic catalysts for use in harsh acidic environments.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
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2020
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IF 7.246
Yongliang Xu,Yang Liu,Yunchuan Bu,Menglei Chen,Lanyun Wang
A large amount of SOx will be produced in the combustion process of coal without desulfurization , which is the main factor causing air pollution, environmental damage and PM2.5 increase. Here, desulfurization of coal by chemical agents are summarized. Acid/alkali desulfurization and occur mainly through the chemical reaction of an acid/alkali with a metal oxide or sulfate (such as calcium oxide and ferric sulfate) to remove sulfur from coal, which can only remove a small amount of inorganic sulfur and organic sulfur. Moreover, the combination of an organic solvent with an acid/alkali for desulfurization can transform the organic sulfur molecule into an inorganic sulfur salt in an acid/alkali environment due to cyclic polar compounds containing oxygen or nitrogen that react with coal molecules and dissolve part of the coal molecules. Furthermore, microwave combined with chemical reagents for desulfurization shows better desulfurization efficiency and economy, but most of them were aimed at the removal of oil and model sulfur, and there were few studies on sulfur removal from coal. In view of the advantages of low volatility and high recycling rate of ionic liquids (ILs), the research progress and mechanism of action of ionic liquids in coal desulfurization are reviewed. It is found that acidic ionic liquids can be combined with hydrogen in coal to effectively dissolve organic sulfur. While the acidic ionic liquid was applied in combination with the oxidant hydrogen peroxide, the desulfurization effect appears more significant. The –SH and -S-S- functional groups in coal could be better oxidized by hydrogen peroxide to sulfone and sulfoxide, which was due to the oxidation promoted by acidic ionic liquids.
研究领域:
化学工程
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环境科学
✓ 已验证
DOI
高影响因子
MICROCHEMICAL JOURNAL
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2021
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IF 4.821
Ming Zheng,Qiang Yin,Dongyuan Wang,Zixuan Zhao,Qinghua Hu,Hongqing Wang
Uranium mining, refining and spent fuel reprocessing are mostly carried out in an acidity and high water ratio environment. But there are currently fewer fluorescent probes that can meet this requirement. For this purpose, it is a urgent problem to design and synthesis fluorescent sensor for detection of uranium in these conditions. A novel triphenylamine-based fluorescent sensor (USC-001) has been design and prepared for the detection of uranyl ions in acidic and high water ratio environments and biologic samples. And even though the concentration of other metal ions is 5 times higher than that of uranyl ions, the probe is still have good selectivity to UO 2 2+ . In addition, a large number of auxiliary simulation calculations and experiment not only reveal the mechanism of the influence of water ratio on the change of the fluorescence spectrum , but also propose the mechanism and coordination mode of USC-001 for identifying UO 2 2+ . Furthermore, USC-001 has been successfully used to detect uranyl ions in actual water samples and biological cells.
研究领域:
化学
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生物学
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环境科学
✓ 已验证
DOI
高影响因子
RSC Advances
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2022
·Vol. 12
·期 36
·23503-23512
·
IF 4.036
Kun Huang,Lan Yang,Yihong Gao,Shikuo Li,Hui Zhang,Fangzhi Huang
For electrocatalytic hydrogen evolution in acidic environments, the stability of catalysts has always been a significant factor restricting development. Here, we prepared a superstable SnO2/MoS2 coupled nanosheet array on carbon cloth (CC@SnO2/MoS2), exhibiting an overpotential of 166 mV at a current density of 10 mA cm−2. According to the results of various tests and theoretical calculations, it is shown that the establishment of SnO2/MoS2 interface engineering is to accelerate the electron transmission on the heterogeneous interface and S defects on the edge of MoS2, and finally improve the conductivity and catalytic activity of the catalyst. More importantly, the formation of an SnO2 interface layer during in situ transformation improves the stability and hydrophilicity of the material surface. We have proposed a strategy for engineering an interface with fast electron transport and proton adsorption, providing some new ideas for the design of HER catalysts in acid electrolytes.
研究领域:
材料科学
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电化学
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理论计算
✓ 已验证
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2013
·Vol. 38
·期 25
·10191-10195
·
IF 3.548
Zhuobin Yu,Qiang Zhao,Genyan Hao,Wen Yuan,Jinping Li
A weakly acidic H 3 BO 3 solution (pH = 5.1) was used to synthesize new oxygen-evolution catalysts for water splitting under mild conditions. Two novel oxygen-evolution catalysts, Co–BA i and Mn–BA i (BA i = inorganic boric acid), were obtained in the H 3 BO 3 solution with added Co 2+ and Mn 2+ , respectively. The average oxygen evolution rate in the H 3 BO 3 solution with Co 2+ was 0.3133 μmol/h, about 70 times greater than the rate without a metal ion ; the rate with Mn 2+ was 1.13 μmol/h, about 250 times greater. The phases, morphologies, and compositions of the Co–BA i and Mn–BA i catalysts were analysed by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, and X-ray photoelectron spectroscopy .
研究领域:
材料化学
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电催化
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能源科学
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无机化学
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可持续能源技术
✓ 已验证
DOI
高影响因子
JOURNAL OF MOLECULAR STRUCTURE
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2025
·
IF 4.7
Zengchen Liu,Zimin Wang,Wenbo Zhang,Kaibo Xu,Wenping Zhu,Hongyu Chen,Yahong Chen,Yanxia Li,Baodui Wang
Iron is one very important element, which plays key roles in living organisms. Especially, ferric iron ions participate in various biochemical processes of the body through functions such as heme synthesis, immune regulation, iron utilization and transport, redox reactions, and gene expression regulation. Herein, a highly selective fluorescence sensor for ferric ion based on boric acid assisted N-doped CDs was prepared. In the sensing process of Fe 3+ , the fluorescence of BA-N-CDs water solution changes from yellow to red obviously in acidic condition, accompanied by the change in color of the solution from pale yellow to dark red. In addition, the fluorescence sensor shows low detecting limit (nanomolar level) by fluorescence titration spectrum. Moreover, according to evaluate excellent fluorescence imaging of sensor toward Fe 3+ in M109 cell and tomato leaf, the study provided an important idea for constructing water-soluble fluorescence sensor for Fe 3+ in organism and plant system.
研究领域:
分析化学
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生物医学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2025
·
IF 4.3
Shuang E,Zhao Gao,Xinran Cong,Chuang He,Lidan Gao,Zhenxing Yin
Nitrogen-doped carbon dots (NCDs) serve as promising green corrosion inhibitors for carbon steel in acidic environments. However, the influence of nitrogen doping levels on their inhibition performance remains unclear. This study synthesizes five NCDs with varying nitrogen contents (8.34 %, 10.98 %, 13.04 %, 18.52 %, and 19.64 %) through a controlled method and confirms their long-term colloidal stability. Corrosion inhibition efficiencies are evaluated in 1 mol/L HCl using electrochemical measurements. More importantly, the inhibition mechanism is elucidated from both molecular-level calculations and microscopic characterization. The results show a non-monotonic relationship between nitrogen content and inhibition efficiency, with NCDs-4 (18.52 % N) exhibiting the highest performance, reaching 95.27 % efficiency at 100 mg/L. Adsorption isotherm analysis, surface morphology characterization, and quantum chemical calculations reveal the inhibition mechanism. The superior performance of NCDs-4 is attributed to its balanced electron-donating ability and favorable molecular geometry, which promote strong parallel adsorption on the steel surface. This work clarifies the role of nitrogen content in modulating NCD performance and provides guidance for their rational design as corrosion inhibitors.
研究领域:
材料科学
·
腐蚀与防护
·
绿色化学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2024
·
IF 9.7
Jin-zhi Luo,Yan-yan Cai,Jin Yu,Jun-feng Huang
While traditional biochar demonstrates promising performance in diverse settings, its efficacy may be constrained under specific conditions of high acidity and heavy metal concentrations. In this study, researchers developed a new polysilicon-aluminum alkali mineral-enhanced biochar composite material, GBMSs (green biochar-metakaolin-sodium silicate), by pyrolyzing fibers from dragon fruit peels and blending them with metakaolin and sodium silicate. Using a response surface methodology, this environmentally friendly composite material was optimized for removing copper and zinc contaminants across a range of initial pH levels from 2 to 6. Experimental findings indicated that the adsorption capacity of GBMSs for copper and zinc was significantly enhanced, ranging from 1.5 to 4 times greater compared to pure biochar or biochar mixed solely with a silicon-aluminum mineral. Various analytical techniques including scanning electron microscopy, X-ray diffraction (XRD), and Fourier transform infrared (FTIR) spectroscopy were utilized to examine the influence of poly-silica-aluminum alkali minerals (GBMSs) on biochar composites. The findings revealed an upsurge in surface binding locations and oxygen-related functional groups because of integrating GBMSs. This augmentation of electronegative features on the biochar surface was credited to the development of stabilizing silica-aluminum connections, ultimately boosting its adsorption effectiveness in acidic surroundings. By applying Langmuir and Freundlich models, it was deduced that the adsorption of GBMSs adheres to a multilayer uniform adsorption mechanism, with surface ion interchange and complexation restricting the adsorption capability. This research highlights the potential of clay mineral-altered biochar in efficiently dealing with intricate environmental contamination.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry A
·
2025
·
IF 9.5
Xinyu Zhu,Minghao Fang,Shaorou Ke,Bozhi Yang,Shujie Yang,Yanghong Li,Meiling Zhan,Xin Min
In the context of overall water splitting, traditional catalysts like Pt/C and IrO2 are inadequate due to high costs and limited functionality. In response to this challenge, our research introduces a versatile catalytic material, synthesized via an innovative “wet–dry” microwave radiation technique, designed for effective overall water splitting under both acidic and alkaline conditions. In just 110 seconds, we synthesize aluminum-modified ultrathin Rux/RuO2 heterostructures (A-RRO@G), with a diameter of approximately 2.3 nm and a height of less than 1 nm, which significantly reduces cost and preparation time. Thanks to the high atomic utilization and the electronic structure modulation facilitated by the ultrathin Rux/RuO2 heterostructure with the Al dopants, electronic configurations and kinetic reaction pathways are significantly optimized. This results in superior water-splitting performance in both acidic and alkaline environments. Notably, the hydrogen evolution reaction (HER) mass activities surpass those of 20 wt% Pt/C by 16.60 and 5.19 times under alkaline and acidic conditions, respectively, and the oxygen evolution reaction (OER) mass activities exceed that of commercial IrO2 by two orders of magnitude. This research provides insights for developing advanced catalysts tailored for efficient water splitting, marking a significant scientific and practical enhancement in clean energy conversion and storage.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
Analytical Methods
·
2014
·Vol. 6
·期 17
·6789-6795
·
IF 1.938
Wei Li,Zhao Gao,Rongxin Su,Wei Qi,Libing Wang,Zhimin He
Pepsin is an active digestive enzyme present in the acidic environment of animal stomachs, and has been widely used to prepare bioactive peptides in the food industry. In this work, a simple fluorescence sensor for scissor-based detection of pepsin activity was developed by using lysozyme-stabilized gold nanoclusters (AuNCs@Lyz) in aqueous media. Under acidic conditions (pH 3.0), enzymatic digestion of AuNCs@Lyz with pepsin results in a significant decrease of fluorescence intensity. Notably, its acidic environment not only helps maintain the maximum fluorescence of gold nanoclusters, but also ensures the highest enzymatic activity of pepsin. In addition to offering high selectivity because of the unique proteolytic action of pepsin under acidic conditions, this facile method provides high sensitivity. With the sensing system, the linear range for pepsin detection is found to be 1 μg mL−1 to 100 μg mL−1, with a detection limit of 0.256 μg mL−1 at a signal-to-noise ratio of 3. Furthermore, the AuNCs@Lyz based fluorescent sensing system could find applications in highly sensitive and selective detection of pepsin in food and biological samples.
研究领域:
生物化学
·
食品科学
·
分析化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）