Journal of Materials Chemistry A
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2015
·Vol. 3
·期 38
·19476-19482
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IF 7.443
Jun-Feng Li,Zhen-Long Zhang,Hui-Ping Gao,Yang Zhang,Yan-Li Mao
TiO2 nanorods were synthesized by hydrothermal methods with ethanol–HCl and water–HCl solutions, respectively, and CH3NH3PbI3−xClx perovskite solar cells based on them were fabricated. The power conversion efficiency (PCE) of the best solar cells based on TiO2 nanorods with water–HCl solution is higher than that with ethanol–HCl solution. The dimensions, morphology, optical properties, and photogenerated charge behavior of the two kinds of samples were investigated. The results indicate that the better performance of solar cells based on TiO2 nanorods with water–HCl solution than those with ethanol–HCl solution could be attributed to their special orientation, high conductivity, improved morphology, good optical properties, fast charge transfer and reduced charge recombination. A PCE of 11.8% was achieved using TiO2 nanorods with water–HCl solution, which is the highest among the reported TiO2 nanorod based cells.
研究领域:
材料科学
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能源科学
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DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2024
·Vol. 48
·期 7
·3064-3079
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IF 2.7
Miantuo Li,Fengting Li,Jianwen Hu,Nannan Cui,Huiling Su,Lizhi Li,Zhikun Wang,Shuangqing Sun,Songqing Hu
Three chitosan ionic liquid type Schiff bases (CS-IL-SBs) were synthesized by grafting three aldehydes (vanillin, cinnamaldehyde, and pyridine-4-carboxaldehyde) on CS-IL (chitosan grafted with p-toluene sulfonic acid) through a Schiff base reaction. Thermogravimetric analysis indicated that the thermal stability of CS was enhanced by the modification of IL and Schiff base groups. All CS-IL-SBs present a non-crystalline structure as analyzed using X-ray diffraction technique and have a positively charged surface in solution for improved dispersion stability as analyzed using zeta potential testing. A corrosion inhibition performance investigation using electrochemical and mass loss methods was undertaken, which were supported with surface analysis and computational studies. All the CS-IL-SBs act as effective corrosion inhibitors obeying Langmuir adsorption isotherm containing both chemisorption and physisorption for N80 steel in 15% HCl solution. Among them, CS-IL-Vin (grafted by vanillin) exhibits a maximum inhibition efficiency of 83.66% at 400 mg L−1. The analysis of the corroded metal surface via scanning electron microscopy depicts a considerably smooth morphology in the presence of adsorbed CS-IL-SBs. Contact angle tests indicated that the water-repellent ability of the metal surface was increased by the addition of CS-IL-SBs. Density functional theory calculations indicated that the active regions of CS-IL-SBs are mainly distributed in –SO3−, benzene rings, and Schiff base groups. Molecular dynamics simulations show that CS-IL-SBs are parallelly adsorbed on the metal surface to form a stable protective film. CS-IL-Vin shows the best performance among the three CS-IL-SBs, which was selected to be compounded with aided inhibitors with different electrical properties. When CS-IL-Vin was compounded with negatively charged 3-carboxybenzene sulfonate in a ratio of 1 : 3, corrosion inhibition efficiency was the highest, reaching 93.45%.
研究领域:
材料科学
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电化学
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表面工程
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DOI
高影响因子
International Journal of Electrochemical Science
·
2023
·
IF 1.5
Fengshuang Han,Zhili Gong,Rui Wang,Sufang Dang
In this manuscript, the ability of (5-Benzoyl-1H-benzimidazol-2-yl) carbamicacidmethylester (mebendazole, MBD) as an inhibitor of corrosion on 5Cr pipeline steel in HCl medium was explored. Corresponding electrochemical tests, immersion tests and other experiments were designed, and at the same time, the ability of mebendazole to inhibit corrosion of 5Cr steel in HCl medium was screened and proved by means of molecular weight simulation calculation analysis process, and its possible anticorrosion mechanism was also revealed. Electrochemical test results show that mebendazole can successfully prevent 5Cr steel from dissolving in HCl medium, and the inhibition efficiency is particularly significant with the increase of mebendazole content. According to the electrochemical impedance test, the highest corrosion inhibition efficiency ( η ) can reach 94.4 %. The results of immersion weight loss experiment are highly consistent with the electrochemical test data and SEM electron microscope morphology. From the theoretical calculation results, it can be found that under neutral conditions and protonated mebendazole molecules have lower energy gaps and higher dipole moments in solvated and unsolvated environments, and can Parallel adsorption on the metal surface, which also corresponds to its efficient corrosion inhibition performance. In addition, through comparison, it is found that the protonated mebendazole molecule under solvation conditions has the highest binding energy, that is, it is the easiest to interact with 5Cr steel and presents the best anti-corrosion performance.
研究领域:
材料科学
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电化学
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防腐蚀工程
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2021
·
IF 6.165
Mengyue Zhu,Zhongyi He,Lei Guo,Renhui Zhang,Valentine Chikaodili Anadebe,Ime Bassey Obot,Xingwen Zheng
In this work, nitrogen-doped carbon dots (NCDs) were obtained by hydrothermal method with citric acid and ethylenediamine as precursors. The corrosion inhibition performance and mechanism of prepared the NCDs on the Q235 carbon steel in 1 M HCl solution were evaluated by electrochemical impedance spectroscopy (EIS), potentiodynamic polarization curve, and surface analysis. The results that the NCDs exhibited 93% of inhibition efficiency at 100 mg/L. Electrochemical measurements demonstrated that the NCDs adsorbed on the metal surface and effectively inhibited the electron transfer process. The potentiodynamic polarization suggested that NCDs were excellent mix-type corrosion inhibition. Furthermore, NCDs successfully prevented the dissolution of anode metal and the evolution of cathode hydrogen ions. The adsorption of the NCDs followed Langmuir adsorption isotherm indicated physical and chemical adsorption. At the same time, the adsorption mechanism was analyzed, guiding the use of carbon dots as environment-friendly corrosion inhibitors in the future.
研究领域:
材料科学
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腐蚀与防护
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环境科学
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DOI
高影响因子
JOURNAL OF MOLECULAR LIQUIDS
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2016
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IF 2.74
Ke Hu,Jia Zhuang,Chaochao Zheng,Zhu Ma,Li Yan,Hubo Gu,Xianguang Zeng,Jiating Ding
A novel environmental-friend corrosion inhibitor named cytosine- l -alanine derivative (CLAD) was synthesized by using small biological molecules to protect the X80 steel surface in HCl solution. The weight loss measurement, polarization curves, electrochemical impedance spectroscopy (EIS) and SEM measurement were used to systematically investigate the inhibition performance of CLAD. The results showed that the corrosion inhibition efficiency of CLAD reached 91%, which was 78% higher than that of l -alanine. And it was found that the impeded electron transfer, reduced metal dissolution and inhibited corrosion progress of metal surface were derived from the compact and uniform protective film. The adsorption of CLAD obeyed the Langmuir adsorption isotherm , and adsorption behaviors included physical adsorption and chemical adsorption. Moreover, the quantum chemistry calculation parameters ( E HOMO , E LUMO and Δ N ) proved that the high corrosion inhibition efficiency of CLAD was associated with its strong adsorption as a barrier film on the steel surface. The results further demonstrated that the KI mixed CLAD was an alternative strategy to enhance the inhibition efficiency and reduce the cost.
研究领域:
材料科学
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电化学
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表面工程
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DOI
高影响因子
International Journal of Electrochemical Science
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2023
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IF 1.5
Yong Lu,Huixia Feng,Hou Xia,Wu Hai Xia
Polyaniline has a wide application in the field of corrosion protection, the poor solubility of polyaniline limited its application as a corrosion inhibitor. Water-soluble carboxymethyl cellulose -polyaniline composites was synthesized by chemical oxidation polymerization in a mild way without other inorganic or organic acids added. Corrosion inhibition performance of composites was evaluated for Q235 steel corrosion in 1 M HCl corrosive solution using weight loss and electrochemical measurements at various concentrations. The results show that carboxymethyl cellulose -polyaniline composites exhibit good inhibition properties and the remarkable increase in inhibition efficiency, i.e., 94.24% is achieved while the maximum concentration of the experiment is 1000 ppm. The composites in corrosive solution suppress the cathodic hydrogen evolution reactions and anodic metal dissolution of the substrate. Adsorption of the inhibitor on the steel surface follows a Langmuir adsorption isotherm.
研究领域:
材料科学
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腐蚀与防护
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DOI
高影响因子
International Journal of Electrochemical Science
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2023
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IF 1.5
Chuan Lai,Hongxia Yang,Xiaogang Guo,Xiulan Su,Lvshan Zhou,Lei Zhang,Bin Xie
The new organic corrosion inhibitor of 2-( p -bromobenzylthio)-1 H -benzimidazole (Br-BBD) was synthesized in this work. After prepared, the adsorption and corrosion inhibition performance of Br-BBD for Q235 steel in HCl solution were studied using EIS, SEM, polarization measurement and WLM (weight loss measurement). The results exhibit that Br-BBD acts as an excellent corrosion inhibitor for Q235 steel in HCl solution, and the inhibition efficiency can reach up to 98.07% when the Br-BBD concentration is 50 mg L -1 in 1.0 M HCl at 25°C. In addition, the adsorption of the mixed-type inhibitor of Br-BBD on Q235 steel surface obey Langmuir adsorption isotherm, which is governed by spontaneous chemisorption mechanism.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
RSC Advances
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2021
·Vol. 11
·期 35
·21607-21621
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IF 3.361
Mingjun Cui,Xia Li
Novel nitrogen and sulfur co-doped carbon dots (N,S-CDs) were synthesized via a hydrothermal procedure using citric acid (CA) and thiourea (TU) as precursors, and the corresponding corrosion protection performance was first investigated for Q235 carbon steel in 1 M HCl solution. Experimental results indicated that N,S-CDs as mixed-type corrosion inhibitors could effectively prevent Q235 carbon steel from corrosion in 1 M HCl solution, and the corrosion inhibition efficiency was improved with the increase in N,S-CD concentration. The maximum value was achieved at 400 ppm of N,S-CDs at 25 °C, which was approximately 96.6%, 94.6% and 90.55%, according to the potentiodynamic polarization curves, EIS results and weight loss measurement, respectively. Additionally, with the temperature ranging from 25 to 55 °C, the inhibition efficiency obtained from the weight loss measurement was enhanced from 90.55% to 94.04%. Such superior inhibition effect was assigned to the physisorption and chemisorption of N,S-CDs on the Q235 carbon steel surface, which was also be confirmed by XPS analysis. The adsorption of N,S-CDs onto a steel substrate conformed to the Langmuir adsorption isotherm.
研究领域:
材料科学
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腐蚀与防护
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表面化学
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产品关联
DOI
PubMed
高影响因子
ANTI-CORROSION METHODS AND MATERIALS
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2025
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IF 2.6
Xiong Zhao,Junying Zhang,Jing Li,Ping Qiu
Purpose AQs3This study aims to explore the corrosion inhibition performance and mechanism of pyridine derivatives on the corrosion of N80 steel in a 0.5 M HCl solution using electrochemical experiments. Design/methodology/approach This study evaluates the corrosion performance of three pyridine derivatives (4-hydroxypyridine [OI], 4-aminopyridine [NI] and 4-mercaptopyridine [SI]) as organic corrosion inhibitors for mild steel in a 0.5 M HCl using potentiodynamic polarization, electrochemical impedance spectroscopy and atomic force microscopy. The bonding mechanism between the reactive groups of the inhibitor molecules and the metal surface is analyzed using theoretical calculations. Findings The corrosion inhibition efficiency of the studied inhibitors on mild steel follows the sequence: SI > NI > OI. The bonding mechanism between the reactive groups of the inhibitor molecules and the metal surface is analyzed using theoretical calculations. It is found that the reactive group changes the charge transfer and the bonding strength of the corrosion inhibitor to the metal surface, which affects the corrosion inhibition performance. Originality/value This study provides valuable insights into the role of electron transfer in the interaction between the inhibitor and the metal surface, thereby contributing to the development and design of more effective and economical corrosion inhibitors.
研究领域:
材料科学
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腐蚀与防护
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电化学
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DOI
高影响因子
Processes
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2019
·Vol. 7
·期 3
·159
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IF 1.963
Yahong Wu,Weiwei Luo,Xunan Jia,Haoqing Fang,Honggang Wang,Shuai Yu
We investigated the performance of viscoelastic surfactant (VES) solution when applied in treatment on the uninvaded matrix using core flooding tests to analyze the impact of VES/CaCl2concentration on fluid viscosity. In this paper, core samples from Tahe carbonate reservoir, with an average permeability less than 0.02 × 10−3μm−2and a small average porosity in the range of approximately 0.04–5.24% are used in the experiments. Computed tomography (CT) scanning is used to provide a detailed description of inner structure variation of cores after the acid system treatment. The results confirmed that a large pressure difference contributed to fracture propagation and the relative permeability of water increased significantly after the treatment. It was also found that higher concentrations of VES and/or Ca2+induced higher viscosity and a stronger fracturing effect, while a lower concentration improved the reaction rates and etching effect, generating small worm holes inside the core. Foam in-situ produced during the etching process is the major contributor to the fluid viscosity enhancement. The permeability of fracture formed on the surface of the core is more sensitive to the confining pressure. These findings can help better understand the rheological properties of the acid system and etching and fracturing mechanisms during acid treatment, and which provides instructions for field implementation.Keywords:VES/HCl solution;carbonate rock;acid etching;X-CT scan;filter loss;core flow experiment
研究领域:
石油工程
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地质学
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DOI
高影响因子
RSC Advances
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2019
·Vol. 9
·期 52
·30249-30258
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IF 3.049
Feng Yang,Yu Liu,Tong Liu,Shuan Liu,Haichao Zhao
In this work, a water-soluble host–guest complex containing carboxymethylated beta-cyclodextrin (CM-β-CD) and an aniline trimer (AT) was synthesized. The application of AT–CM-β-CD as an inhibitor for alleviating the corrosion of Q235 carbon steel in 1 M HCl solution was investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). Results showed that the inhibition efficiency was significantly increased in the presence of AT–CM-β-CD, and the inhibition efficiency was up to 99.2% when the concentration of AT–CM-β-CD was 250 mg L−1. Field emission scanning electron microscopy (SEM) and laser scanning confocal microscopy (LSCM) confirmed that the corrosion inhibitor had excellent corrosion inhibition effects due to the formation of an adsorption film on the surface of Q235 carbon steel. According to the data extracted from the Langmuir adsorption model, AT–CM-β-CD absorption involves both physisorption and chemisorption.
研究领域:
材料科学
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电化学
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腐蚀与防护
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产品关联
DOI
PubMed
高影响因子
Sustainable Chemistry and Pharmacy
·
2021
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IF 4.508
Jingbao Wang,Jing Jing,Li Feng,Hailin Zhu,Zhiyong Hu,Xuemei Ma
The corrosion inhibition behavior and adsorption mechanism of three novel synthetic surfactants in 1 M HCl solution on carbon steel were investigated. The PP results confirmed that all the synthetic surfactants behave as mixed-type inhibitors, while the EIS results validated the existence of a protective layer by the adsorption of inhibitor molecules on the carbon surface. T 3 was observed to offer the highest inhibition efficiency ( η w , 96.28%) at 1 mM by the static weight loss measurements due to two different hydrophobic chains which form a more compact film with the crosswise arrangement. SEM/EDS and XPS results revealed the formation of the surfactants film on the carbon steel surface. Molecular dynamics simulation (MD) was further executed to determine the adsorption mechanism in molecular level insights. In addition, a linear correlation between surface activity ( γ ) and corrosion inhibition efficiency ( η w ) was verified. The adsorption of the prepared surfactants followed the Freundlich isotherm at different concentration ranges. Moreover, the bilayer/multilayer adsorption mechanism was also proposed and confirmed by experimental, adsorption isotherm studies and MD. Hence, both MD simulations and experimental results revealed the analogous inhibition with the order follows: T 3 > T 2 > T 1 .
研究领域:
材料科学
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腐蚀工程
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表面化学
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DOI
高影响因子
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