Chemo-sensors development based on low-dimensional codoped Mn2O3-ZnO nanoparticles using flat-silver electrodes

Chemistry Central Journal

Mohammed M Rahman³  George Gruner⁴  Mohammed Saad Al-Ghamdi²  Muhammed A Daous¹  Sher Bahadar Khan³  Abdullah M Asiri³ 

[1] Chemical Engineering, Faculty of Engineering, King Abdulaziz University, Jeddah, 21589, Saudi Arabia

[2] Physics Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia

[3] Chemistry Department, Faculty of Science, King Abdulaziz University, P.O. Box 80203, Jeddah, 21589, Saudi Arabia

[4] Department of Physics, University of California Los Angeles, 405 Hilgard Avenue, Los Angeles, California, 90095, USA

关键词: Sensitivity;    X-ray photoelectron spectroscopy;    I-V technique;    4-nitrophenol;    Powder X-ray diffraction;    Wet-chemical method;    Doped Mn2O3-ZnO nanoparticles;   

Others  :  787934
DOI  :  10.1186/1752-153X-7-60

 received in 2013-01-18, accepted in 2013-03-19,  发布年份 2013

【 摘 要 】

Background

Semiconductor doped nanostructure materials have attained considerable attention owing to their electronic, opto-electronic, para-magnetic, photo-catalysis, electro-chemical, mechanical behaviors and their potential applications in different research areas. Doped nanomaterials might be a promising owing to their high-specific surface-area, low-resistances, high-catalytic activity, attractive electro-chemical and optical properties. Nanomaterials are also scientifically significant transition metal-doped nanostructure materials owing to their extraordinary mechanical, optical, electrical, electronic, thermal, and magnetic characteristics. Recently, it has gained significant interest in manganese oxide doped-semiconductor materials in order to develop their physico-chemical behaviors and extend their efficient applications. It has not only investigated the basic of magnetism, but also has huge potential in scientific features such as magnetic materials, bio- & chemi-sensors, photo-catalysts, and absorbent nanomaterials.

Results

The chemical sensor also displays the higher-sensitivity, reproducibility, long-term stability, and enhanced electrochemical responses. The calibration plot is linear (r² = 0.977) over the 0.1 nM to 50.0 μM 4-nitrophenol concentration ranges. The sensitivity and detection limit is ~4.6667 μA cm^-2 μM^-1 and ~0.83 ± 0.2 nM (at a Signal-to-Noise-Ratio, SNR of 3) respectively. To best of our knowledge, this is the first report for detection of 4-nitrophenol chemical with doped Mn₂O₃-ZnO NPs using easy and reliable I-V technique in short response time.

Conclusions

As for the doped nanostructures, NPs are introduced a route to a new generation of toxic chemo-sensors, but a premeditate effort has to be applied for doped Mn₂O₃-ZnO NPs to be taken comprehensively for large-scale applications, and to achieve higher-potential density with accessible to individual chemo-sensors. In this report, it is also discussed the prospective utilization of Mn₂O₃-ZnO NPs on the basis of carcinogenic chemical sensing, which could also be applied for the detection of hazardous chemicals in ecological, environmental, and health care fields.

【 授权许可】

   
2013 Rahman et al.; licensee Chemistry Central Ltd.

【 图 表 】

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【 参考文献 】

• [1]Na CW, Park SY, Chung JH, Lee JH: Transformation of ZnO nanobelts into single-crystalline Mn3O4 nanowires. ACS Appl Mater Interfac 2012, 4:6565-6572.
• [2]InglerJr WB, Baltrus JP, Khan SUM: Photoresponse of p-type zinc-doped iron(III) oxide thin films. J Am Chem Soc 2004, 126:10238-10239.
• [3]Wang J, Chong PF, Ng SC, Gan LM: Microemulsion processing of manganese zinc ferrites. Mater Lett 1997, 30:217-221.
• [4]Toberer ES, Löfvander JP, Seshadri R: Topo-chemical formation of mesoporous MnO crystals. Chem Mater 2006, 18:1047-1052.
• [5]Toberer ES, Schladt TD, Seshadri R: Macroporous manganese oxides with regenerative mesopores. J Am Chem Soc 2006, 128:1462-1463.
• [6]Deng H, Li X, Peng Q, Wang X, Chen J, Li Y: Monodisperse magnetic single-crystal ferrite microspheres. Angewandte Chemie (Inter Ed) 2005, 44:2782-2785.
• [7]Patrice R, Dupont L, Aldon L, Jumas JC, Wang E, Tarascon JM: Structural and electrochemical properties of newly synthesized Fe-substituted MnO2 samples. Chem Mater 2004, 16:2772-2782.
• [8]Li H, Li J, Xu Q, Yang Z, Hu X: A derivative photoelectrochemical sensing platform for 4-nitrophenolate contained organophosphates pesticide based on carboxylated perylene sensitized nano-TiO2. Anal Chim Acta In press.
• [9]Rahman MM, Khan SB, Marwani HM, Asiri AM: Selective iron(III) ion uptake using CuO-TiO2 nanostructure by inductively coupled plasma-optical emission spectrometry. Chem Centr J 2012, 6:158. BioMed Central Full Text
• [10]Sampieri Á, Lima E: On the acid–base properties of microwave irradiated hydrotalcite-like compounds containing Zn2+ and Mn2+. Langmuir 2009, 25:3634-3639.
• [11]Mugumaoderha MC, Sporken R, Ghijsen J, DeGroot FMF, Dumont JA: Phase transitions at the Mn/ZnO (0001¯) interface probed by high energy X-ray spectroscopies. J Phys Chem C 2012, 116:665-670.
• [12]Torres F, Amigó R, Asenjo J, Krotenko E, Tejada J, Brillas E: Electrochemical route for the synthesis of New nanostructured magnetic mixed oxides of Mn, Zn, and Fe from an acidic chloride and nitrate medium. Chem Mater 2000, 12:3060-3067.
• [13]Feng D, Luo W, Zhang J, Xu M, Zhang R, Wu H, Lv Y, Asiri AM, Khan SB, Rahman MM, Zheng G, Zhao D: Multi-layered mesoporous TiO2 thin films with large pore and highly crystalline frameworks for efficient photoelectrochemical conversion. J Mater Chem A 2013, 1:1591-1599.
• [14]Rahman MM, Jamal A, Khan SB, Faisal M: Characterization and applications of as-grown β-Fe2O3 nanoparticles prepared by hydrothermal method. J Nanopart Res 2011, 13:3789-3799.
• [15]Wu KL, Wei XW, Zhou XM, Wu DH, Liu XW, Ye Y, Wang Q: NiCo2 Alloys: controllable synthesis, magnetic properties, and catalytic applications in reduction of 4-nitrophenol. J Phys Chem C 2011, 115:16268-16274.
• [16]Rahman MM, Khan SB, Faisal M, Asiri AM, Alamry KA: Highly sensitive formaldehyde chemical sensor based on hydrothermally prepared spinel ZnFe2O4 nanorods. Sens Actuator B Chem 2012, 171–172:932-937.
• [17]Rahman MM: Fabrication of mediator-free glutamate sensors based on glutamate oxidase using smart micro-devices. J Biomed Nanotech 2011, 7:351-357.
• [18]Rahman MM, Jamal A, Khan SB, Faisal M: Fabrication of chloroform sensors based on hydrothermally prepared low-dimensional β-Fe2O3 nanoparticles. Superlatt Microstruc 2011, 50:369-376.
• [19]Gomes JDA, Sousa MH, Tourinho FA, Aquino R, Silva GJD, Depeyrot J, Dubois E, Perzynski R: Synthesis of core-shell ferrite nanoparticles for ferrofluids: chemical and magnetic analysis. J Phys Chem C 2008, 112:6220-6227.
• [20]Rahman MM, Khan SB, Faisal M, Asiri AM, Tariq MA: Detection of aprepitant drug based on Low-dimensional Un-doped iron oxide nanoparticles prepared by solution method. Electrochim Acta 2012, 75:164-170.
• [21]Rahman MM, Khan SB, Marwani HM, Asiri AM, Alamry KA, Al-Youbi AO: Selective determination of gold (III) ion using CuO microsheets as a solid phase adsorbent prior to ICP-OES measurements. Talanta 2013, 104:75-82.
• [22]Frenzel W, Frenzel JO, Moeler J: Spectrophotmetric determination of phenolic compounds by flow-injection analysis. Anal Chim Acta 2006, 261:253.
• [23]Penalver A, Pocurull E, Borrull F, Marce RM: Separation and determination of nitrobenzenes by micellar electrokinetic chromatography and high-performance liquid chromatography. J Chromatogr A 2002, 953:79.
• [24]Castillo M, Domingues R, Alpendurada MF, Barcelo D: Persistence of selected pesticides and their phenolic transformation products in natural waters using off-line liquid solid extraction followed by liquid chromatographic techniques. Anal Chim Acta 1997, 353:133.
• [25]Dzyadevych SV, Chovelon JM: A comparative photodegradation studies of methyl parathion by using Lumistox test and conductometric biosensor technique. Mater Sci Eng C 2002, 21:55.
• [26]ATSDR: Toxicity FAQs nitrophenols; Agency for Toxic Substances and Disease Registry. 2001.
• [27]Wang SP, Chen HJ: Separation and determination of nitrobenzenes by micellar electrokinetic chromatography and high-performance liquid chromatography. J Chromatogr A 2002, 979:439.
• [28]Kontsas H, Rosenberg C, Pfaeffli P, Jappinen P: Gas chromatographic–mass spectrometric determination of chlorophenols in the urine of sawmill workers with past use of chlorophenol-containing anti-stain agents. Analyst 1995, 120:1745-1749.
• [29]Brega A, Prandini P, Amaglio C, Pafuni E: Determination of phenol, m-, o- and p-cresol, p-aminophenol and p-nitrophenol in urine by high-performance liquid chromatography. J Chromatogr A 1990, 535:311-316.
• [30]Makuch B, Gazda K: Occurrence and determination of organic pollutants in tap and surface waters of the Gdańsk district. J Chromatogr A 1996, 733:171.
• [31]Wissiack R, Rosenberg E: Universal screening method for the determination of US Environmental Protection Agency phenols at the lower ng l−1 level in water samples by on-line solid-phase extraction–high-performance liquid chromatography–atmospheric pressure chemical ionization mass spectrometry within a single run. J Chromatogr A 2002, 963:149.
• [32]Kaniansky D, Krcmova E, Madajova V, Masar M, Marek J: Determination of nitrophenols by capillary zone electrophoresis in a hydrodynamically closed separation compartment. J Chromatogr A 1997, 772:327.
• [33]Luz RDS, Damos FS, DeOliveira AB, Beek J: Voltammetric determination of 4-nitrophenol at a lithium tetracyanoethylenide (LiTCNE) modified glassy carbon electrode. Talanta 2004, 64:935.
• [34]Hu SS, Xu CL, Wang GP, Cui DF: Voltammetric determination of 4-nitrophenol at a sodium montmorillonite-anthraquinone chemically modified glassy carbon electrode. Talanta 2001, 54:115.
• [35]Barek J, Ebertova H, Mejstrik V, Zima J: Determination of 2-Nitrophenol, 4-Nitrophenol, 2-Methoxy-5-nitrophenol, and 2,4-Dinitrophenol by Differential Pulse Voltammetry and Adsorptive Stripping Voltammetry. Collect Czech Chem C 1994, 59:1761.
• [36]Ni Y, Wang L, Kokot S: Simultaneous determination of nitrobenzene and nitro-substituted phenols by differential pulse voltammetry and chemometrics. Anal Chim Acta 2001, 431:101.
• [37]Lawrence NS, Pagels M, Meredith A, Jones TGJ, Hall CE, Pickles CSJ, Godfried HP: Electroanalytical applications of boron-doped diamond microelectrode arrays. Talanta 2006, 69:829.
• [38]Liu Y, Deng Y, Sun Z, Wei J, Zheng G, Asiri AM, Khan SB, Rahman MM, Zhao D: Hierarchical Cu2S Microsponges Constructed from Nanosheets for Efficient Photocatalysis. Small
• [39]Pedrosa VA, Codognoto L, Machado SAS, Avaca LA: Is the boron-doped diamond electrode a suitable substitute for mercury in pesticide analyses? A comparative study of 4-nitrophenol quantification in pure and natural waters. J Electroanal Chem 2004, 573:11-18.
• [40]Garbellini GS, Salazar-Banda GR, Avaca LA: Sonovoltammetric determination of 4-nitrophenol on diamond electrodes. J. Braz. Chem. Soc. 2007, 18:1095-1099.
• [41]Rahman MM, Gruner G, Al-Ghamdi MS, Daous MA, Khan SB, Asiri AM: Fabrication of highly sensitive phenyl hydrazine chemical sensor based on as-grown ZnO-Fe2O3 Microwires. Inter. J. Electrochem. Sci. 2013, 8:520-534.
• [42]Lund H, Baizer MM (Eds): Organic electrochemistry: an introduction and a guide. New York: Marcel Dekker; 1991:411.
• [43]Khan SB, Akhtar K, Rahman MM, Asiri AM, Seo J, Alamry KA, Han H: Thermally and mechanically stable green environmental composite for chemical sensor applications. New Journal of Chemistry 2012, 36:2368-2375.
• [44]Khan SB, Rahman MM, Jang ES, Akhtar K, Han H: Special susceptive aqueous ammonia chemi-sensor: Extended applications of novel UV-curable polyurethane-clay nanohybrid. Talanta 2011, 84:1005-1010.
• [45]Khan SB, Faisal M, Rahman MM, Jamal A: Exploration of CeO2 nanoparticles as a chemi-sensor and photo-catalyst for environmental applications. Sci Tot Environ 2011, 409:2987-2992.
• [46]Cordero-Rando MD, Barea-Zamora M, Barber-Salvador JM, Naranjo-Salvador I: Electrochemical study of 4-nitrophenol at a modified carbon paste electrode. Microchim Acta 1999, 132:7-11.
• [47]Khan SB, Faisal M, Rahman MM, Jamal A: Low-temperature growth of ZnO nanoparticles: photocatalyst and acetone sensors. Talanta 2011, 85:943-949.
• [48]Rahman MM, Umar A, Sawada K: Development of amperometric glucose biosensor based on glucose oxidase enzyme immobilized with multi-walled carbon nanotubes at Low potential. Sens Actuator B Chem 2009, 137:327-333.
• [49]Rahman MM, Jamal A, Khan SB, Faisal M, Asiri AM: Highly sensitive methanol chemical sensor based on undoped silver oxide nanoparticles prepared by a solution method. Microchim Acta 2012, 178:99-106.
• [50]Rahman MM, Jamal A, Khan SB, Faisal M, Asiri AM: Fabrication of methanol chemical sensor based on hydrothermally prepared α-Fe2O3 codoped SnO2 nanocubes. Talanta 2012, 95:18-24.
• [51]Rahman MM, Jamal A, Khan SB, Faisal M, Asiri AM: Fabrication of highly sensitive acetone sensor based on sonochemically prepared as-grown Ag2O nanostructures. Chem Engineer J 2012, 192:122-128.
• [52]Rahman MM, Jamal A, Khan SB, Faisal M: Cu-doped ZnO based nanostructured materials for sensitive chemical sensor applications. ACS App Mater Inter 2011, 3:1346-1351.
• [53]Sadik OA, Zhou AL, Kikandi S, Du N, Wang Q, Varner K: Sensors as tools for quantitation, nanotoxicity and nanomonitoring assessment of engineered nanomaterials. J Environ Monit 2009, 11:1782-1800.
• [54]Su S, Wu W, Gao J, Lu J, Fan C: Nanomaterials-based sensors for applications in environmental monitoring. J Mater Chem 2012, 22:18101-18110.
• [55]Rahman MM, Jamal A, Khan SB, Faisal M: Fabrication of highly sensitive ethanol chemical sensor based on Sm-doped Co3O4 nano-kernel by solution method. J Phys Chem C 2011, 115:9503-9510.
• [56]Rahman MM, Jamal A, Khan SB, Faisal M: Highly sensitive ethanol chemical sensor based on Ni-doped SnO2 nanostructure materials. Biosens Bioelectron 2011, 28:127-134.
• [57]Zhang L, Wang JQ, Li J, Zhang S, Jiang Z, Zhou J, Cheng J, Hu T, Yan W, Wei X, Wu Z: Regulation of magnetic behavior and electronic configuration in Mn-doped ZnO nanorods through surface modifications. Chem Mater 2012, 24:1676-1681.
• [58]Swierczewska M, Liu G, Lee S, Chen X: High-sensitivity nanosensors for biomarker detection. Chem Soc Rev 2012, 41:2641-2655.
• [59]Lord H, Kelley SO: Nanomaterials for ultrasensitive electrochemical nucleic acids biosensing. J Mater Chem 2009, 19:3127-3134.
• [60]Zhou L, Wu HB, Zhu T, Lou XW: Facile preparation of ZnMn2O4 hollow microspheres as high-capacity anodes for lithium-ion batteries. J Mater Chem 2012, 22:827-829.
• [61]Courtel FM, Abu-Lebdeh Y, Davidson IJ: ZnMn2O4 nanoparticles synthesized by a hydrothermal method as an anode material for Li-ion batteries. Electrochim Acta 2012, 71:123-127.
• [62]Zhao J, Wang F, Su P, Li M, Chen J, Yang Q, Li C: Spinel ZnMn2O4 nanoplate assemblies fabricated via “escape-by-crafty-scheme” strategy. J Mater Chem 2012, 22:13328-13333.
• [63]Bessekhouad Y, Robert D, Weber JV: Photocatalytic activity of Cu2O/TiO2, Bi2O3/TiO2 and ZnMn2O4/TiO2 heterojunctions. Catal Today 2005, 101:315-321.
• [64]Yang Y, Zhao Y, Xiao L, Zhang L: Nanocrystalline ZnMn2O4 as a novel lithium-storage material. Electrochem Commun 2008, 10:1117-1120.
• [65]Duan J, Wang H, Wang H, Zhang J, Wu S, Wang Y: Mn-doped ZnO nanotubes: from facile solution synthesis to room temperature ferromagnetism. CrystEngComm 2012, 14:1330-1336.
• [66]Wang L, Liu B, Ran S, Wang L, Gao L, Qu F, Chen D, Shen G: Facile synthesis and electrochemical properties of CoMn2O4 anodes for high capacity lithium-ion batteries. J Mater Chem A 2013.
• [67]Li H, Song B, Wang WJ, Chen XL: Facile synthesis, thermal, magnetic, Raman characterizations of spinel structure ZnMn2O4. Mater Chem Phys 2011, 130:39-44.
• [68]Kim SW, Lee HW, Muralidharan P, Seo DH, Yoon WS, Kim DK, Kang K: Electrochemical performance and ex situ analysis of ZnMn2O4 nanowires as anode materials for lithium rechargeable batteries. Nano Res 2011, 4:505-510.
• [69]Zhang G, Yu L, Wu HB, Hoster HE, Lou XW: Formation of ZnMn 2 O 4 ball-in-ball hollow microspheres as a high-performance anode for lithium-Ion batteries. Adv Mater 2012, 24:4609-4613.
• [70]Xiao L, Yang Y, Yin J, Li Q, Zhang L: Low temperature synthesis of flower-like ZnMn2O4 superstructures with enhanced electrochemical lithium storage. J Pow Sour 2009, 194:1089-1093.
• [71]Deng Y, Tang S, Zhang Q, Shi Z, Zhang L, Zhan S, Chen G: Controllable synthesis of spinel nano-ZnMn2O4via a single source precursor route and its high capacity retention as anode material forlithium ion batteries. J Mater Chem 2011, 21:11987-11995.
• [72]Menaka SL, Samal KV, Ramanujachary SE, Lofland G, Ganguli AK: Stabilization of Mn(IV) in nanostructured zinc manganese oxide and their facile transformation from nanospheres to nanorods. J Mater Chem 2011, 21:8566-8573.
• [73]Rahman MM, Khan SB, Faisal M, Rub MA, Al-Youbi AO, Asiri AM: Electrochemical determination of olmesartan medoxomil using hydrothermally prepared nanoparticles composed SnO2–Co3O4 nanocubes in tablet dosage forms. Talanta 2012, 99:924-931.
• [74]Zhang P, Li X, Zhao Q, Liu S: Synthesis and optical property of one dimensional spinel ZnMn2O4 nanorods. Nanoscal Res Lett 2011, 6:323. BioMed Central Full Text
• [75]Zhao L, Li X, Zhao J: Fabrication, characterization and photocatalytic activity of cubic-like ZnMn2O4. App Surf Sci
• [76]Lupan O, Emelchenko GA, Ursaki VV, Chai G, Redkin AN, Gruzintsev AN, Tiginyanu IM, Chow L, Ono LK, Cuenya BR, Heinrich H, Yakimov EE: Synthesis and characterization of ZnO nanowires for nanosensor applications. Mater Res Bull 2010, 45:1026-1032.
• [77]Marcelo G, Muñoz-Bonilla A, Fernández-García M: Magnetite-polypeptide hybrid materials decorated with gold nanoparticles: study of their catalytic activity in 4-nitrophenol reduction. J Phys Chem C 2012, 116:24717-24725.
• [78]Song P, Qin HW, Zhang L, An K, Lin ZJ, Hu JF, Jiang MH: The structure, electrical and ethanol-sensing properties of La1−xPbxFeO3 perovskite ceramics with x ≤ 0.3. Sens Actuator B Chem 2005, 104:312-317.
• [79]Lee SR, Rahman MM, Ishida M, Sawada K: Fabrication of a highly sensitive penicillin sensor based on charge transfer techniques. Biosens Bioelectron 2009, 24:1877-1882.
• [80]Lee SR, Rahman MM, Ishida M, Sawada K: Development of highly sensitive acetylcholine sensor based on acetylcholine by charge transfer techniques esterase using smart biochips. Trends Anal Chem 2009, 28:196-203.
• [81]Han N, Chai L, Wang Q, Tian Y, Deng P, Chen Y: Evaluating the doping effect of Fe, Ti and Sn on gas sensing property of ZnO. Sens Actuator B Chem 2010, 147:525-530.
• [82]Hsueh TJ, Hsu CL, Chang SJ, Chen IC: Laterally grown ZnO nanowire ethanol gas sensors. Sens Actuator B Chem 2007, 126:473-477.
• [83]Tao B, Zhang J, Hui S, Wan L: An amperometric ethanol sensor based on a Pd-Ni/SiNWs electrode. Sens Actuator B Chem 2009, 142:298-302.
• [84]Wongrat E, Pimpang P, Choopun S: An amperometric ethanol sensor based on a Pd-Ni/SiNWs electrode. App Surf Sci 2009, 256:968-972.
• [85]Umar A, Rahman MM, Kim SH, Hahn YB: Zinc oxide nanonail based chemical sensor for hydrazine detection. Chem Commun 2008, 166-169.
• [86]Mujumdar S: Synthesis and characterization of SnO2 films obtained by a wet chemical process. Mat Sci Poland 2009, 27:123-128.
• [87]Pan B, Du W, Zhang W, Zhang X, Zhang Q, Pan B, Lv L, Zhang Q, Chen J: Improved Adsorption of 4-Nitrophenol onto a Novel Hyper-Cross-Linked Polymer. Environ Sci Technol 2007, 41:5057-5062.
• [88]Wunder S, Polzer F, Lu Y, Mei Y, Ballauff M: Kinetic analysis of catalytic reduction of 4-nitrophenol by metallic nanoparticles immobilized in spherical polyelectrolyte brushes. J Phys Chem C 2010, 114:8814-8820.
• [89]Hayakawa K, Yoshimura T, Esumi K: Preparation of gold − dendrimer nanocomposites by laser irradiation and their catalytic reduction of 4-nitrophenol. Langmuir 2003, 19:5517-5521.
• [90]Zhang J, Chen G, Chaker M, Rosei F, Ma D: Gold nanoparticle decorated ceria nanotubes with significantly high catalytic activity for the reduction of nitrophenol and mechanism study. App Catal B Environ 2013, 132–133:107-115.
• [91]Gangula A, Podila R, Ramakrishna M, Karanam L, Janardhana C, Rao AM: Catalytic reduction of 4-nitrophenol using biogenic gold and silver nanoparticles derived from breynia rhamnoides. Langmuir 2011, 27:15268-15274.
• [92]Ahmaruzzaman M, Gayatri SL: Activated neem leaf: a novel adsorbent for the removal of phenol, 4-nitrophenol, and 4-chlorophenol from aqueous solutions. J Chem Eng Data 2011, 56:3004-3016.
• [93]Khan SB, Rahman MM, Akhtar K, Asiri AM, Alamry KA, Seo J, Han H: Copper oxide based polymer nanohybrid for chemical sensor applications. Int J Electrochem Sci 2012, 7:10965-10975.
• [94]Liu XY: A novel sensor based on electropolymerization poly(safranine) film electrode for voltammetric determination of 4-nitrophenol. Bull Korean Chem Soc 2010, 31:1182-1186.
• [95]Liu J, Chen H, Lin Z, Lin JM: Preparation of surface imprinting polymer capped Mn-doped ZnS quantum dots and their application for chemiluminescence detection of 4-nitrophenol in Tap water. Anal Chem 2010, 82:7380-7386.
• [96]Nistor C, Oubiña A, Marco MP, Barceló D, Emnéus J: Competitive flow immunoassay with fluorescence detection for determination of 4-nitrophenol. Anal Chim Acta 2001, 426:185-195.
• [97]Li J, Kuang D, Feng Y, Zhang F, Xu Z, Liu M: A graphene oxide-based electrochemical sensor for sensitive determination of 4-nitrophenol. J Hazard Mater 2012, 201–202:250-259.
• [98]Pedrosa VA, Codognoto L, Avaca LA: Electroanalytical determination of 4-nitrophenol by square wave voltammetry on diamond electrodes. J Braz Chem Soc 2003, 14:530-535.