Qihui Wang

Chongqing University of Science & Technology · School of Civil Engineering and Architecture

This work explored the synergistic effect of Styphnolobium japonicum (L.) Schott extract (SE) and potassium io-dide (KI) on the corrosion inhibition of carbon steel (CS) in 0.5 mol/L H 2 SO 4 solution. Firstly, the functional groups in the SE were identified using FTIR. The results of UPLC-Q-TOF-MS analysis confirmed the major phytoconstituents pre...

Cyanobacterial outbreaks seriously affect drinking water safety. Therefore, developing effective algal removal technologies is urgently needed. The study aims to investigate the effects of pH, electrode distance, current density, and initial algal concentration on electrochemical algae collection. Consequently, we loaded nanoscale zero-valent iron...

The utilization of waste materials as corrosion inhibitors is gaining attention in the field of corrosion science and metallurgy due to its potential for sustainable and cost-effective corrosion control. This chapter explores the promising application of slaughterhouse waste, a readily available and underutilized resource, as corrosion inhibitors....

To make waste more sustainable and environmentally friendly, the criterion for future production processes will be to give waste “new life”. Metal corrosion, spurred by electrochemical reactions with the environment, poses a significant global challenge from both economic and environmental standpoints. Among the current anti-corrosion technologies,...

In this work, the corrosion inhibition effects of octadecyl trimethyl ammonium chloride (OTAC) and dioctadecyl dimethyl ammonium chloride (DDAC) on Q235 steel in a 0.5 mol/L H2SO4 solution are studied. The results of the electrochemical experiment, contact angle measurement, and scanning electron microscopy indicate that the two ionic liquids belon...

This study utilized Schizochytrium extract (SE) to explore its protective effect on carbon steel in a 0.5 mol/L H2SO4 solution. The main functional groups of SE were investigated by Fourier infrared spectroscopy (FTIR) and x-ray photoelectron spectroscopy (XPS). The following conclusions were drawn from electrochemical tests: A corrosion inhibition...

Abstract: The objective of this study is to extract amino acids from fish processing discards for the preparation of highly effective and degradable corrosion inhibitors. The composition of fish processing discards extract (FPDE) was characterized by HPLC and FTIR. The results showed that the main components of FPDE are amino acids and contain a la...

This study employed Benincasa hispida peel as a raw material for the preparation of Benincasa hispida peel extract (BHPE) via hot water extraction and freeze-drying processes. The synergistic effect of BHPE and KI on the corrosion inhibition of mild steel in 1 M HCl was investigated. The compositional analysis shows that BHPE consists mainly of a m...

In this study, corrosion inhibitors from waste protein were extracted, and their anti-corrosion behavior was investigated on a laboratory-scale. The functional groups of the protein waste extract (PWE) were identified using Fourier transform infrared (FTIR) spectroscopy. High-performance liquid chromatography (HPLC) was used to determine the variet...

The shell of viviparid snail extract (SVSE) was prepared by a simple and environmentally friendly hydrolysis method and the corrosion inhibition of carbon steel (CS) by SVSE in 1 M HCl was investigated. HPLC and FTIR analysis showed that the main component of SVSE was a mixture of various amino acids. The results of electrochemical and surface anal...

Corrosion is the process of damaging materials, and corrosion of metallic materials frequently results in serious consequences. The addition of corrosion inhibitors is the most effective means of preventing metal corrosion. Until now, researchers have made unremitting efforts in the research of high-efficiency green corrosion inhibitors, and resear...

In recent years, the frequent outbreaks of cyanobacterial blooms have caused severe water pollution in many rivers and lakes at home and abroad, endangering drinking water safety and human health. How to remove cyanobacteria from water bodies safely, quickly, and economically has attracted the attention of many scientists. Currently, the typical tr...

This study presents an eco–friendly and high–efficiency corrosion inhibitor for carbon steel in 1 M hydrochloric acid (HCl) extracted from Reineckia carnea. Electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization (PD) were conducted to evaluate the anti–corrosion performance of Reineckia carnea extracts (RCE) for carbon steel...

In this work, the corrosion inhibition properties of FJLE in chlorine–containing simulated concrete pore solution (SCPS) were investigated by aqueous extraction of FJLE leaves. Fourier Transform Infrared Spectrometer (FTIR) and High–Performance Liquid Chromatography (HPLC) were used to determine the main components of FJLE. The corrosion inhibition...

Plant extracts with the advantages of environment–friendly, renewable and rich resources, can be used as promising corrosion inhibitors in pickling or descaling processes. In this study, the inhibition performance and inhibition mechanism of Nandina domestica Thunb. extract (NDTE) for carbon steel in HCl solution was evaluated by electrochemical ex...

At present, an important goal in the field of corrosion is to develop effective and environment–friendly corrosion inhibitors. Newly developed corrosion inhibitors can be used to substitute conventional corrosion inhibitors, which are toxic and undegradable. Herein, Artemisia argyi leaves extract (ALE) as high–efficiency corrosion inhibitor of carb...

In this work, the degradation of mechanical properties of galvanized steel under wind and sand erosion environment was studied. The law of weight loss of galvanized steel in corrosive environment was studied by accelerated corrosion experiment. The micro-morphology and formation mechanism of corrosion products were investigated in detail by scannin...

Metallic materials are widely utilized in the fields of industry, agriculture, transportation and daily life for their high mechanical strength, and relatively low cost. However, the microorganisms that are widely distributed in surroundings can have complicated interactive reactions with metallic materials. The microbiologically influenced corrosi...

In this work, Centipeda minima leaves extract (CMLE) was prepared by facile hot–water immersion extraction and freeze–drying with Centipeda minima leaves as raw material. The potentiodynamic polarization curves (Tafel), electrochemical impedance spectroscopy (EIS), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM),...

5-Mercapto-1-methyltetrazole (MML), 1-[2-(dimethylamino)ethyl]-1H-tetrazole-5-thiol (DET), and 1-(4-hydroxyphenyl)-1H-tetrazole-5-thiol (HHT) as corrosion inhibitors were studied by electrochemical methods, surface morphology analysis, and theoretical calculations for X80 in acidic medium. Electrochemical impedance spectroscopy data indicate that t...

We demonstrate the synthesis of cesium lead bromide (CsPbBr3) perovskite magic sized clusters (PMSCs) and how to control the transformation from CsPbBr3 perovskite quantum dots (PQDs) to PMSCs by varying the amount of organic carboxylic acids (CAs), including mesitylacetic acid (MAA), oleic acid (OA), and phenylacetic acid (PAA), along with benzyla...

Mn-doped CsPbBr3 perovskite magic sized clusters (PMSCs) are synthesized for the first time using benzoic acid (BA) and benzylamine (BZA) as passivating ligands and MnCl24H2O and MnBr2 as the Mn2+ dopant source at room temperature. The same approach is used to prepare Mn-doped CsPbBr3 perovskite quantum dots (PQDs). The concentration of MnX2 (X=Cl...

CuO@Al nanothermites with Al shell and CuO core were successfully fabricated via a simple self‒assembly route. The composition and morphology of CuO@Al nanothermites were analyzed by X‒ray diffraction (XRD) and field‒emission scanning electron microscopy (FESEM) in detail. When the equivalence ratio was 1.0, the heat output of CuO@Al nanothermites r...

In this work, [email protected]3 energetic films have been successfully synthesized by the combination of hydrolysis and electrophoretic deposition (EPD). The films were carefully characterized by X-ray diffraction (XRD),transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS). The released energy and combustion performance of...

Si is considered as a promising fuel for energetic materials and has received increasing attention. In this study, a novel core‒shell structure [email protected] energetic material was successfully synthesized by self‒assembly method. Poly(4‒vinylpyridine) was used as cross linker to coat nano‒CuO on the surface of nano‒Si to form core‒shell struct...

We report the first demonstration of using trivalent metal hydrated nitrate coordination complexes (TMHNCCs) as novel passivation ligands to control the synthesis of magic sized clusters (MSCs) and quantum dots (QDs) of CsPbBr3 perovskite at room temperature. We can easily tune from QDs to MSCs or produce a mixture of the two by changing the amount...

An effective and biodegradable Ficus tikoua leaves extract was studied as a corrosion inhibitor for carbon steel in hydrochloric acid. Systematic electrochemical experiments and morphological characterization were carried out to investigate the properties of the corrosion inhibitor. Meanwhile, quantum chemical calculations were performed to aid fur...

The biodegradable inhibitors, which could effectively reduce the rate of corrosion of carbon steel, were investigated by potentiodynamic polarization and electrochemical impedance spectroscopy (EIS). The mixed-type inhibitors extracted from Eriobotrya japonica Thunb. leaf exhibited excellent inhibition performance, and the inhibition efficiency for...