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Journal of Renewable Materials 2023年第11期11卷 3789-3806页

作者： Annisa Ardiyanti Suprapto Suprapto Yatim Lailun Ni’mah Department of Chemistry Faculty of Sciences and Data AnalyticsInstitut Teknologi Sepuluh NopemberKampus ITS-SukoliloSurabaya60111Indonesia

Dyes are pervasive contaminants in wastewater,posing significant health risks to both humans and animals.Among the various methods employed for effective dye removal,adsorption has emerged as a highly promising approach due to its notable advantages,including high efficiency,cost-effectiveness,low energy consumption,and operational simplicity compared to alternative treatments.This comprehensive review focuses on investigating adsorbents derived from biowastes and biomass,specifically carbon-based and non-conventional adsorbents,for the removal of malachite green,a widely used dye known for its toxic and carcinogenic properties.Carbon-based adsorbents encompass two main types:activated carbon and biochar,while non-conventional adsorbents refer to powder sorbents without carbonaceous treatments.Extensive studies have reported remarkable findings,with achieved maximum removal percentages exceeding 98%and capacities reaching 250 mg/g.These results highlight the exceptional efficacy of the reviewed adsorbents in eliminating malachite green from wastewater.By exploring the potential of bio-based adsorbents,this review sheds light on sustainable and environmentally friendly solutions for mitigating dye pollution.

关键词： Adsorption carbon dyes malachite green wastewater

A novel surface-oxidized rigid carbon foam with hierarchical macro-nanoporous structure for efficient removal of malachite green and lead ion

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Journal of Materials Science & Technology 2022年第8期103卷 15-28页

作者： Qiyun Zhang Renquan Wu Yunhong Zhou Qilang Lin Changqing Fang College of Advanced Manufacturing Fuzhou UniversityJinjiang 362251China College of Materials Science and Engineering Fuzhou UniversityFuzhou 350116China Faculty of Printing Packing Engineering and Digital Media TechnologyXi’an University of TechnologyXi’an 710048China

This study developed a method to fabricate a surface-oxidized rigid carbon foam(ORCF)with hierarchical macro-nanoporous structure via KOH activation of the carbon foam with two kinds of macropores followed by HNO_(3) hydrothermal oxidation.The structures of the prepared ORCF were characterized using scanning electron microscopy,transmission electron microscopy,X-ray diffraction,Fourier transform infrared(FTIR)spectra,X-ray photoelectron spectroscopy,and N_(2) adsorption-desorption analyzer.Results demonstrate that the ORCF possesses a fluffy and porous structure with rich oxygen-containing groups.There are numerous through-holes on its pore surfaces connected with two-level macropores forming hierarchical macroporous channels.Meanwhile,the ORCF remains a good bulk structure with a compression strength of 0.74 MPa at a bulk density of 0.09 g cm^(−3).Batch adsorption experiments for malachite green(MG)and Pb^(2+) were studied through the single variable method to investigate the effects of different initial conditions on its adsorption process.The ORCF has maximum adsorption capacities for MG and Pb^(2+) of 587.68 mg g^(−1) and 157.80 mg g^(−1) with high partition coefficients of 17.41 mg g^(−1)μM^(−1) and 14.86 mg g^(−1)μM^(−1),respectively.The experimental data are suitable for Langmuir isotherm and Pseudo-secondorder kinetic models,which correspond to monolayer chemisorption.Thermodynamic analysis indicates that the adsorption process is spontaneous and endothermic.Moreover,the removal percentages of MG and Pb^(2+)by the ORCF could remain above 90%after five cycles,implying that the ORCF is an efficient adsorbent with good adsorption ability and cycling stability.

关键词： HNO3 oxidation Carbon foam malachite green Lead Adsorption

Insights into remediation technology for malachite green wastewater treatment

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Water Science and Engineering 2023年第3期16卷 261-270页

作者： Peter Olusakin Oladoye Timothy Oladiran Ajiboye Wycliffe Chisutia Wanyonyi Elizabeth Oyinkansola Omotola Mayowa Ezekiel Oladipo Department of Chemistry and Biochemistry Florida International UniversityMiami 33199USA Analytical/Environmental Chemistry Unit Department of Pure and Applied ChemistryLadoke Akintola University of TechnologyOgbomoso 210214Nigeria Department of Chemistry Nelson Mandela UniversitySummerstrand 6031South Africa Material Science Innovation and Modelling(MaSIM)Research Focus Area Faculty of Natural and Agricultural SciencesNorth-West UniversityMmabatho 2735South Africa Department of Mathematics Actuarial and Physical SciencesSchool of Science and TechnologyUniversity of KabiangaKericho 20201Kenya Department of Chemical Sciences Tai Solarin University of EducationIjebu Ode 120101Nigeria

malachite green (MG) dye is a common industrial dye and organic contaminant that can be found in (waste)water. Textile and food industries make use of MG as dyeing and food coloring agents, respectively. However, MG is both genotoxic and mutagenic. Hence, the elimination of MG from MG-laden-wastewater is germane. This review summarizes up-to-date researches that have been reported in literature as regards the decontamination of toxic MG wastewater. Various removal methods (adsorption, membrane, Fenton system, and heterogenous and homogeneous photodegradation) were discussed. Of the two basic technologies that are comprehensively explored and reviewed, chemical treatment methods are not as viable as physical removal methods, such as the adsorption technology, due to the lack of secondary pollutant production, simple design, low operation costs, and resource availability. This review also presents various practical knowledge gaps needed for large-scale applications of adsorptive removal methods for MG. It concludes by recommending further research on the techniques of cheap and simple decontamination of MG to get clean water.

关键词： Contaminant Wastewater Decontamination Pollution malachite green Dye

Rapid fabrication of large-area and uniform surface-enhanced Raman spectroscopy substrate of Au nano-hemisphere array and its application in the detection of malachite green in tilapia

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Food Quality and Safety 2023年第1期7卷 40-48页

作者：张芹韩娇娇陈艳红贾志清潘晓会 Karuppasamy Kohila Rani 周剑章焦天慧陈清敏吴德印 College of Ocean Food and Biological Engineering Jimei UniversityXiamenChina College of Chemistry and Chemical Engineering Xiamen UniversityXiamenChina

Although surface-enhanced Raman spectroscopy(SERS)substrates have achieved high sensitivity,it is still difficult to apply these SERS protocols to the on-site detection of real samples due to the SERS substrate being fabrication-complexed,unstable,reproducible,or unable to be applied in batch production.Here,a large-scale ordered two-dimensional array of Au nano-hemispheres was developed through electron beam vaporization of Au onto the easy-available commercialized anodic aluminum oxide(AAO)template with two-layer nanostructures of different diameters.The uniform Au nano-hemisphere is reliable for SERS detection of malachite green(MG)due to the relative standard deviation(RSD)of the SERS intensities at different locations less than 10%.With the optimized excitation wavelength,solvent effect and pH environment,the linear range of MG detection spans from 10^(-10) to 10^(-6) mol/L with a limit of detection(LOD)of 4×10^(-10) mol/L.The enhancement factor can reach 1.2×10^(6).After extraction with acetonitrile and dichloromethane,MG in the spiked tilapia was detected with satisfactory recovery.The results indicate that the Au nano-hemisphere array can be expected to greatly facilitate SERS practical applications in detecting harmful food additives and chemicals due to the advantages of chemical inertness,physical robustness,simple fabrication,controllability,large-area uniformity,and large-batch production.

关键词： Au nano-hemisphere array surface-enhanced Raman spectroscopy anodic aluminum oxide template malachite green uniform nanostructure

Fe Nanoparticles Synthesized by Pomegranate Leaves for Treatment of malachite green

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Journal of Wuhan University of Technology(Materials Science) 2022年第3期37卷 350-354页

作者：胡玉 ZHOU Shiyu PAN Xiaobin ZHOU Fan SUN Yong LIU Meiqun ZHANG Dong 张玲帆 Department of Chemistry and Environmental Engineering Hanjiang Normal UniversityShiyan 442000China Shiyan Hydrological and Water Resources Survey Bureau of Hubei Province Shiyan 442000China School of Chemistry and Molecular Engineering East China University of Science and TechnologyShanghai 200237China

A green and convenient pathway of preparing iron nanoparticles(FeNPs)with pomegranate leaf(PG)extract for highly effective removal of malachite green(MG)was proposed under ambient conditions.The materials were characterized by scanning electron microscope(SEM),X-ray energy-dispersive spectrometer(EDS),Fourier transform infrared spectroscopy(FTIR),X-ray diffraction(XRD)and X-ray photoelectron spectroscopy(XPS)techniques.The results show that their surfaces are capped and stabilized by PG extract with amorphous nature and without any detection of zero-valent iron.The size and surface valence state of FeNPs are the key factors that affect the MG removal efficiency.As the reagent volume ratio of PG extract to FeCl_(3) increases greater than 1,the cross-linked FeNPs become more obvious,having a homogeneous distribution with the size range from 30 to 40 nm,and show an increasing ratio ofFe(Ⅱ)/Fe(Ⅲ),which is in proportion to the degradation efficiency of MG,reaching higher than 95%in only 2 min by using 50 mg Fe/L FeNPs and 200 mg/L MG.

关键词： green synthesis iron nanoparticles pomegranate leaf extract malachite green

Extraordinary adsorption of acidic fuchsine and malachite green onto cheap nano-adsorbent derived from eggshell

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Chinese Journal of Chemical Engineering 2020年第6期28卷 1591-1602页

作者： Atefeh Moosavi Ali Akbar Amooey Ali Alinejad mir Mojtaba Hedayati Marzbali Faculty of Chemistry University of MazandaranBabolsarIran Department of Chemical Engineering University of MazandaranBabolsarIran Chemical&Environmental Engineering School of EngineeringRMIT UniversityMelbourneVictoria 3000Australia

Removal of dyestuffs such as Acidic Fuchsine(AF)and malachite green(MG)being present in many forms in industries is vital to protect water reservoirs from their catastrophic effects on the ecosystem.This study attempts to effectively eliminate these dyes using a low-cost and eco-friendly material.Eggshell,as a biocompatible by-product,was initially characterized,then some modifications were conducted,and its morphology and chemical structure were then examined through(Atomic force microscopy)AFM,(Fourier-Transform Infrared Spectroscopy)FTIR,(Energy-Dispersive X-ray Spectroscopy)EDS and(Brunauer–Emmett–Teller)BET analyses.They revealed that the modifications on raw material gave rise to a natural nano-adsorbent presenting porous medium appropriate for targeted adsorbate molecules with the average particle size and average pore diameter of 54 and^2 nm,respectively.Functional groups on the adsorbent surface were also of importance to assist the adsorption of AF and MG.The effect of contact time,adsorbent dose,solution p H and initial concentration was evaluated.Pseudo-second order model accurately correlated the experimental kinetic data for both dyes.Moreover,the participation of intra-particle diffusion along with film diffusion in controlling the process was suggested.Langmuir isotherm model fitted very well to the equilibrium data for both dyes and maximum monolayer adsorption capacity of AF and MG was accordingly calculated to be 5000 and 3333.33 mg·g-1 respectively.The inherent characteristics of eggshell make it a potential material to remove contaminants from wastewater in future applications.

关键词： Egg shell Acidic Fuchsine malachite green Ultrahigh adsorption

High photocatalytic activity over starfish-like La-doped ZnO/SiO_(2) photocatalyst for malachite green degradation under visible light

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Journal of Rare Earths 2021年第7期39卷 772-780,I0001页

作者： Shuo Wang Zhenke Chen Ying Zhao Chenlu Sun Jianye Li College of Material Science and Chemical Engineering Harbin Engineering UniversityHarbin 150001China College of Chemistry and Chemical Engineering Qiqihar UniversityQiqihar 161006China Faculty of Engineering and Applied Science Memorial University of NewfoundlandSt.John'sA1C 5S7Canada

In this work,the unique starlike La-doped ZnO-SiO_(2) photocatalysts were constructed by an evaporation and calcination method and characterized in detail.UV-vis reflectance and DFT calculation confirm that the doping with La allows to obtain a decrease of band gap of ZnO/SiO_(2),which enhances visible light absorbance and oxidizing ability.The photoluminescence intensity reduces greatly,indicating more effective separation of the photo generated carriers of La-doped ZnO-SiO_(2).Photocatalytic activities of Ladoped ZnO-SiO_(2) with different doping ratios under simulated visible light irradiation were evaluated with malachite green(MG) as a model pollutant.Under optimized conditions including solution pH of 8,15 mg/L of MG solution and 15 mg of catalyst dosage,0.2% La-ZnO-SiO_(2) exhibits the best catalytic activity in photodegradations of MG in water.The removal and mineralization efficiency of MG can reach 96.1%and 70.9% in 140 min,respectively.The as-prepared catalysts present superior stability and recyclability after four times reuse.Moreover,selective quenching experiments indicate that hydroxyl radical(·OH),hole(h^(+)) and superoxide radical(·O_(2)^(-)) are the main reactive species responsible for MG degradation.Possible mechanism for photocatalytic elimination of MG over La-doped ZnO/SiO_(2) photocatalyst is finally proposed.

关键词： ZnO Lanthanum doping Photocatalyst malachite green DFT calculation Rare earths

Study on Preconcentration of Trace Copper Using Microcrystalline Triphenylmethane Loaded with malachite green

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Chinese Journal of Chemistry 2007年第4期25卷 521-526页

作者：梁勇赵小红李全民崔凤灵刘国光 Key Laboratory of Environmental Pollution Control Technology of Henan Province College of Chemistry and Environmental Science Henan Normal University Xinxiang Henan 453007 China College of Chemistry and Environmental South China Normal University Guangzhou Guangdong 510631 China

The paper describes a novel method for copper preconcentration using microcrystalline triphenylmethane loaded with malachite green prior to the determination by the flame atomic absorption spectrometry （FAAS）. Under the optimum conditions, Cu（Ⅱ） can be totally adsorbed on the surface of microcrystalline triphenylmethane, and completely separated from Pb（Ⅱ）, Cd（Ⅱ）, Co（Ⅱ）, Cr（Ⅲ）, Ni（Ⅱ）, Mn（Ⅱ）, Fe（Ⅲ） and Al（Ⅲ） by controlling acidity. The preconcentration factor of this proposed method is 200. The recovery is in a range of 97.5%-105%. The relative standard deviation （RSD） is not beyond 3.0%. The proposed method has been successfully applied to the determination of trace copper in various water samples with satisfactory results.

关键词： microcrystalline triphenylmethane malachite green preconcentration determination copper environmental water sample

Preparation of Corn Stalk-Walnut Shell Mix-based Activated Carbon and Its Adsorption of malachite green

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Chemical Research in Chinese Universities 2018年第6期34卷 1014-1019页

作者： KANG Chunli SHANG Dan YANG Ting ZHU Ling LIU Fang WANG Nan TIAN Tao Key Laboratory of Groundwater Resources and Environment Ministry of Education Jilin University Changchun 130012 P. R. China

The mix-based activated carbon derived from corn stalk and walnut shell was prepared by chemical activation method using phosphoric acid as the activator. The optimized conditions for preparation were obtained by the orthogonal experiment, the characterizations of the activated carbon were performed by scanning electron microscopy （SEM）, Fourier transform infrared spectroscopy（FTIR）, Boelan＇s titration method and nitrogen adsorption. For the prepared mix-based activated carbon, the highest iodine number, methylene blue number and BET surface area axe 720.5 mg/g, 195.0 mg/g and 1187 m^2/g, respectively, and the pores are mainly mesopores. The mix-based activated carbon shows the higher adsorption capacity for malachite green than the raw materials, the activated carbons prepared only from corn stalk or walnut shell and the commercial activated carbon. The kinetics and thermodynamics of the adsorption can be satisfactorily described by the pseudo-second-order kinetic model and the Langmuir isotherm model, separately.

关键词： Mix-based activated carbon Phosphoric acid activation Adsorption malachite green

Garlic Root Biomass as Novel Biosorbents for malachite green Removal： Parameter Optimization, Process Kinetics and Toxicity Test

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Chemical Research in Chinese Universities 2016年第4期32卷 647-654页

作者： REN Hejun ZHANG Ruonan WANG Qiaochu PAN Hongyu WANG Yan Key Laboratory of Groundwater Resources and Environment Ministry of Education College of Environment and Resources Jilin University Changchun 130021 P. R. China College of Plant Sciences Jilin University Changchun 130062 P. R. China

The potential of the agricultural waste garlic root to remove malachite green（MG） from aqueous solutions was evaluated. The adsorption of this dye onto garlic root was confirmed by means of Fourier transform infrared analysis（FTIR） and scanning electron microscopy（SEM）. The equilibrium data fitted well into the Langmuir model（R2〉0.99）, and the adsorption kinetics followed the pseudo-second-order equation（R2〉0.99）. The maximum ad- sorption capacities of MG onto the adsorbent were 172.41 and 232.56 mg/g with the addition of 1 and 2 g/L garlic root, respectively. The optimal conditions for MG removal were established on the basis of orthogonal experiments（OAl6 matrix）. The concentrations of both MG and garlic root significantly affected the removal efficiency. The acute toxicity test indicated that the treated MG solutions were less toxic than the parent solutions. These results suggest that garlic root is a potential low-cost adsorbent for removing dye from industrial wastewater.

关键词： Garlic root malachite green Adsorption Toxicity test Wastewater