Ammonium Lauryl Sulfate Research Articles

Quartz crystal microbalance analysis of effects of surfactants on dissolution kinetics of poly(4-hydroxystyrene) partially protected with t-butoxycarbonyl group

Abstract Surfactants comprise water-repellent and water-attracting moieties and have been used to improve the lithographic performance of resist materials. However, the effects of surfactants on the dissolution kinetics of these materials are still unclear. In this study, the effects of surfactants on the dissolution kinetics of partially-protected poly(4-hydroxystyrene) (PHS) in 0.26 N tetramethylammonium hydroxide aqueous solution was investigated using a quartz crystal microbalance method. Anionic (sodium n-octanonate, sodium 1-hexanesulfonate, n-dodecylbenzenesulfonic acid, and sodium n-dodecyl sulfate), cationic (methylamine hydrochloride, dodecyltrimethylammonium chloride, and 30% ammonium lauryl sulfate solution), nonionic (sorbitan monooleate, polyoxyethylene(23)lauryl ether, and polyoxyethylene(10)hydrogenated castor oil), and amphoteric (35% lauryl dimethylaminoacetic acid solution) surfactants were examined. The surfactant significantly affected the dissolution kinetics of the PHS films. The surfactant effects were significantly reduced by protecting the hydroxyl groups of PHS. The effect of the surfactant on the dissolution kinetics depended on the surfactant rather than on the surfactant type.

The Effect of Variation of Latex Mixed Storage Time Polystyrene and Natural Rubber Concentrate Latex on the Stability of the Emulsion by Using Emulsifier Sodium Lauryl Sulfate

Preparation of latex polystyrene with emulsifier ammonium lauryl sulfate (ALS) has been carried out by dissolving styrofoam (foam polystyrene) in toluene (30/70). And then polystyrene solution was mixed with aquadest, at ratios polystyrene and aquadest (v/v) were 90:10, 70:30, 50:50, 70:30, and 10:90 then added 10 mL of sodium lauryl sulfate (NLS) solution at concentrations 30%. The characterizations of the latex polystyrene included the stability determination during storage by density measurement and the determination of particle sizes and forms by microscopic optic observation. The results show that latex polystyrene ratio 90:10 is the most stable with density value constant during storage, are 0,848 g/mL for 30%. The particle sizes average is 1,56 mm with the distribution particle sizes decreasing as latex is 8,3 mm. Photomicrograph microscope optic shows that latex polystyrene NLS 30% has familiar particle forms and sizes

A Sebum-Mimetic Lipid Monolayer and Its Interaction with (Bio)Surfactants

Surfactants present in cleansing formulations interact not only with the unwanted lipids accumulating on the human skin (dirt) but also with its protective lipidic layer (sebum). Development of simple models of human sebum would help to compare different surfactants and biosurfactants under the same conditions. In this contribution we propose a first monolayer model of synthetic sebum composed of lard, stearic acid, lanolin, squalane and cholesterol. The monolayer compression isotherm features a gas-liquid (G-LE1), two liquid-liquid transitions (LE1-LE2 and LE2-LC), and a collapse at πcoll = 45 mN/m. The monolayer spread on pure water and pre-compressed to π0 = 30 mN/m was exposed to four synthetic surfactants (sodium lauryl sulfate (SLS), sodium laureth sulfate (SLES), ammonium lauryl sulfate (ALS) and cocamidopropyl betaine (CAPB)) and four plant extracts (oat (Avena sativa L.), horse chestnut (Aesculus hippocastanum L.), cowherb (Vaccaria hispanica [P. Mill.] Rauschert), soybean (Glycine max L.) and soapwort (Saponaria officinalis L.)) introduced to the subphase at a dry mass content of 1% (w/w). Three modes of the monolayer-(bio)surfactant interactions were observed: (1) complete solubilization (SLS, SLES, ALS, CAPB); (2) penetration accompanied by an increase of surface pressure and elasticity but without solubilization (horse chestnut, cowherb, soapwort); (3) no interaction (oat, soybean).

Impact of dopant ratio on the energy harvesting activity of polyaniline modified counter electrodes for Pt‐free dye‐sensitized solar cells

AbstractCounter electrode (CE) is an essential part of dye‐sensitized solar cells (DSSCs) in determining their efficiency. Ultimately, the high catalytic activity and conductivity of a CE are dependent on the type of electrode material. The utilization of polyaniline (PANI) coatings for surface modification of CE has proven to be worth. Though it is a bit difficult to optimize the efficiency of a polymeric material, a proper combination of inorganic‐organic dopants can impart positive synergistic effects to the resulting PANI in terms of good conductivity, electrocatalytic activity, and low resistance. This work reports on the effect of the combination ration of an organic dopant (ammonium lauryl sulfate, ALS) and an inorganic dopant (sulfuric acid) on the catalytic activity of CEs modified with PANI for DSSCs. The results are compared with those of platinum counter electrode (Pt CE). The maximum conversion efficiency of DSSC with optimized case reaches 4.54%, which is higher than that of Pt counter electrode (4.02%). This organic–inorganic acids doped polymeric material showing an enhanced photoelectrochemical activity might be exploited in the future as a promising material for application in next‐generation solar devices.

Gas diffusion electrodes modified with binary doped polyaniline for enhanced CO2 conversion during microbial electrosynthesis

Microbial electrosynthesis (MES) is a promising technology to convert CO2 into value-added chemicals. Enhancing the interactions between biofilms and electrodes is the key of bioelectrochemical systems (BES). In this work, we studied the conversion of CO2 by MES in reactors equipped with novel gas diffusion electrodes (GDEs) modified with a polyaniline (PANI) polymer binary doped with H2SO4 and ammonium lauryl sulfate. The enhanced conductive and hydrophilic properties of the polymer increased the biocompatibility of the PANI-modified GDEs compared to the non-modified carbon GDEs. This increased biocompatibility resulted in faster start-up and higher bioproduction of volatile fatty acids (VFAs) such as acetate and butyrate. Up to 4400 ppm acetate was produced in PANI-modified reactors after 24 days of operation, compared to 408 ppm in reactors equipped with non-modified GDEs. A maximum acetate concentration of 7500 ppm (production rate of 554.8 ± 267.5 ppm day−1) was reached in reactors equipped with PANI-GDEs. After 60 days, apart from acetate, 245 ppm butyrate was produced in reactors equipped with the electrodes modified with PANI, while less than 60 ppm was produced with non-modified GDEs. SEM analysis revealed the development of biofilms on both modified and non-modified electrodes, but the images also suggest differences in compositions.

Preparation of mesoporous zirconia ceramic fibers modified by dual surfactants and their phosphate adsorption characteristics

Phosphate removal is an essential measure in controlling the eutrophication of water. In this work, the electrospinning mesoporous zirconia fibers with high surface area were prepared and used as adsorbents to remove phosphate in aqueous solutions for the first time. The electrospinning mesoporous zirconia fibers which had large surface area and uniform pore size were prepared by the use of ammonium lauryl sulfate (ALS) and triblock co-polymer Pluronic (P-123) as dual surfactants. The morphology and composite were represented by XRD, TGA/DTA, FT-IR, SEM, and TEM. The specific surface area and pore properties of fibers were investigated by nitrogen adsorption-desorption method. These mesoporous zirconia fibers performed an outstanding phosphate adsorption ability whose maximum adsorption capacity could reach 222.79 mg/g, meanwhile, a nice cycle performance was also observed as the removal rate could remain 92.5% after 5 cycles on the initial concentration of 30 mg/L. The Freundlich model and the pseudo-second-order kinetic model were both fitted with the adsorption data properly. Besides, the fibers also performed a nice ability in anti-interference against the changes of solution pH value and co-existing ions. Thus, the prepared mesoporous zirconia fibers would be a potential adsorbent of phosphate removal process under the conditions of actual wastewater treatment, with the advantages of the excellent adsorption efficiency, low in production cost, high repeatable utilization and environment friendly.

Ammonium lauryl sulfate-induced apoptotic cell death may be due to mitochondrial dysfunction triggered by caveolin-1

A recent epidemiological study suggested that chronic exposure to cleaning detergents significantly reduced lung function in consumers. In this study, we identified the toxic mechanism of ammonium lauryl sulfate (ALS), the most common detergent in consumer products, using alveolar macrophage cells. In preliminary tests, cell viability sharply decreased between 40 and 200 μg/mL, thus we determined doses of 10, 20, and 50 μg/mL for further study. When treated at a 50 μg/mL for 24 h, cell viability was 67.7 ± 3.4% of the control, and autophagosome-like vacuoles and a number of double membranes surrounding damaged mitochondria were observed in the cytosol. Intracellular ROS, the ATP amount, ER volume, acid cell compartments and mitochondrial potential rapidly reduced with dose, whereas the release of LDH and apoptotic bodies dramatically increased. Additionally, multiple cell death pathways were activated following exposure to ALS, and the expression of caveolin-1, p-Acetyl CoA carboxylase, p21, and p-ERK were greatly inhibited. Moreover, the secretion of inflammatory mediators and expression of innate- and adaptive-immune response-related proteins were remarkably reduced. Meanwhile, the secretion of TGF-β was enhanced. Therefore, we conclude that ALS-induced apoptosis may be due to mitochondrial dysfunction triggered by the inhibition of caveolin-1, and that chronic pulmonary exposure to ALS may cause adverse health effects such as cancer and fibrosis by impairing the host's pulmonary immune system.

Gaseous bubble-assisted in-situ construction of worm-like porous g-C3N4 with superior visible light photocatalytic performance

Metal-free graphitic carbon nitride (g-C3N4) displays benign photocatalytic properties for contaminants photodegradation under visible photoirradiation. Devising a simple modification strategy for the improved photocatalytic activity of g-C3N4 has always been desired. Herein, we report a spherical worm-like g-C3N4 nanostructure via facile ammonium lauryl sulfate (ALS) gaseous bubbles templating approach. This strategy employing ALS as gaseous bubbles templating agent bestowed not only g-C3N4 with improved specific surface areas, a porous structure with more exposed photocatalytic reactive sites and mass diffusion of reactants molecules, but also rendered extended optical absorption range and suppression of the photoinduced charge carriers recombination. As a result, the ALS-mediated g-C3N4 photocatalysts unfolded excellent photocatalytic performance regarding photodegradation of rhodamine B (RhB) and phenol under visible photoirradiation. Additionally, the quenching effects of various scavengers proved that the holes (h+) and superoxide anions (O2−) radicals were the main active species responsible for ameliorated photocatalytic performance for rhodamine B and phenol photodegradation. Our work offers a straightforward approach for developing high-performance metal free photocatalysts with great potential for environmental remediation.

Controllable internal mixing in coalescing droplets induced by the solutal Marangoni convection of surfactants with distinct headgroup architectures

Through several complementary experiments, an investigation of the bulk and interfacial flows that emerged during the coalescence of two water-in-oil droplets with asymmetric compositional properties was performed. By adding surfactant to one of the coalescing droplets and leaving the other surfactant-free, a strong interfacial tension gradient (i.e., solutal Marangoni) driving energy between the merging droplets generated pronounced internal mixing. The contributions of two distinct types of surfactant, anionic ammonium lauryl sulfate (ALS) and cationic cetyltrimethylammonium bromide (CTAB) on the rate of coalescence bridge expansion and on the generation of opposing flows during coalescence were investigated. All coalescence experiments supported the power law relation between the radius of the expanding connective liquid bridge and time, rb ∝ t1/2. However, the presence of surfactant decreased the magnitude of the prefactor in this relationship due to induced interfacial solutal Marangoni convection. Experiments showed that packing efficiency, diffusivity, and bulk concentration of the selected surfactant are vital in solutal Marangoni convection and thus the degree and timescale of internal mixing between merging droplets, which has yet to be adequately discussed within the literature. Denser interfacial packing efficiency and lower diffusivity of CTAB produced stronger opposing bulk and interfacial flow as well as greater bulk mixing. A discussion of how optimized surfactant selection and solutal Marangoni convection can be used for passively inducing convective mixing between coalescing drops in microfluidic channels when viscosity modulation is not feasible is provided.

Improvement of wear resistance of AZ91 magnesium alloy by electroless Ni-P coatings with influence of surfactant

Electroless Nickel-Phosphorus (ENi-P) coating is well-known in surface engineering techniques and is preferred in various mechanical, chemical and electronic industries view its extraordinary resistance to wear and corrosion. The paper summarizes the effect of surfactant on mechanical properties of electroless Ni-P alloy coating obtained from acidic bath. Morphology of the resultant coating was studied using scanning electron microscope and its phosphorus content was measured by EDX analyzer. Wear resistance of the coating, with and without surfactant, was evaluated by pin-on-disc tribometer wear tester machine. Endeavour of this study is to analyze the influence of Ammonium Lauryl Sulfate (ALS) surfactant on the microstructure and surface properties of ENi-P deposit on AZ91 Mg alloy substrate. The results revealed that there was a significant improvement in the wear resistance of the coated surface by addition of ALS surfactant in the chemical bath. ALS surfactant is distinctively added into the bath to reduce the surface tension forces, which binds the nickel particles to the hydrogen gas bubbles generated during the deposition process. The complete experimental details, results obtained and their analyses are presented in this paper.

Study of Mechanical Properties of Electroless Nickel-Phosphorus Coatings with Influence of Surfactant on AZ91 Magnesium Alloy

Electroless Nickel-Phosphorus (ENi-P) coating is well-known in surface engineering techniques and is preferred in various mechanical, chemical and electronic industries view its extraordinary resistance to wear and corrosion. The paper summerizes the effect of surfactant on the mechanical properties of electroless Nickel-Phosphorus (Ni-P) alloy coating obtained from an acidic bath. The endeavor of this study is to analyse the influence of surfactant Ammonium Lauryl Sulfate (ALS) concentration on the microhardness, surface roughness and wettability of ENi-P deposit on AZ91 Mg alloy substrate. It was observed that there was significant improvement in the rate of deposition, microhardness and wettability, along with reduction in surface roughness (Ra) by addition of ALS surfactant in the chemical bath.

Separation and quantification of quantum dots and dissolved metal cations by size exclusion chromatography–ICP-MS

ABSTRACTThe prevalence of engineered metallic nanoparticles within electronic products has evoked a need to assess their occurrence and fate within environmental systems upon potential release of these nanoparticles. Quantum dots (QDs) are mixed-metal nanocrystals with the smallest of particle sizes (2–10 nm) that readily leach heavy metal cations in water, potentially creating a co-occurrence of nanoparticulate and dissolved metal pollutants. In this report, we develop a size exclusion chromatography–inductively coupled plasma–mass spectrometry method (SEC-ICP-MS) for the rapid separation and quantification of ~5-nm-sized CdSe/ZnS QDs and dissolved Cd2+ and Zn2+ cations in water. The SEC-ICP-MS method provided a wide chromatographic separation of CdSe/ZnS QDs and dissolved Cd2+ and Zn2+ cations only when using the smallest SEC column pore size available and an eluent composition that prevented loss of metals to column polymer surfaces by using a surfactant to ensure elution of QDs (ammonium lauryl sulfate) and a complexing ligand to ensure elution of metal cations (ethylenediaminetetraacetate). Detection limits were between 0.2 and 2 µg L–1 for Cd2+ and Zn2+ among dissolved cation and QD phases, and ranges of linearity covered two to three orders of magnitude. Gold nanoparticles of sizes 5, 10, 20 and 50 nm were also effectively separated from dissolved Au3+ cations, illustrating the method applicability to a wide range of nanoparticle sizes and compositions. QD and dissolved metal concentrations measured by SEC-ICP-MS were comparable to those measured using the more conventional method of centrifuge ultrafiltration on split samples for dissolved and total metals. The applicability of the SEC-ICP-MS method to environmental systems was verified by measuring QDs and dissolved metals added to samples of natural waters. The method was also applied to monitoring CdSe/ZnS dissolution kinetics in an urban river water. The SEC-ICP-MS developed here may offer improved automation for characterising heterogeneous suspensions containing >1 µg L–1 heavy metals.

High morphological stability and structural transition of halloysite (Hunan, China) in heat treatment

Halloysite is one of the nanoscale tubular minerals in nature. This article reports the mineralogical character, dispersion treatment, structural, and morphological stabilities of a 10Å-type halloysite mineral from Hunan, China. X-ray diffraction (XRD), transmission electron microscopy (TEM), particle-size distribution and N2 adsorption–desorption isotherms were adopted to characterize the raw and calcined minerals. Ammonium lauryl sulfate was used as the surfactant to obtain mono-dispersed halloysite nanotubes.The raw mineral is a kind of tubular nanotube with a hollow interior channel, the specific surface area is 56.7m2/g. Alunitization occurred in the impure mineral. Thermal treatment to the mineral induced shrinkage of the c-axis and yielded a 7Å-type structure. The tube wall was transformed to an amorphous structure in the dehydration process at 450°C. Phase segregation occurred to yield amorphous SiO2 and γ-Al2O3 at around 1000°C. The tubular morphology can be maintained even after it is calcined at 1100°C for 6h, and the specific surface area is enlarged slightly to 65.7m2/g. While after being calcined to 1300°C, the mineral will generate mullite and silica, accompanied with collapse of the tubular walls. A schematic diagram is proposed to illustrate the structural transformation procedure. The results provide assurance to the use of halloysite in high temperature circumstances, such as three-way catalysts.

Negative Synergistic Effect on Foaming in Body Care Products with Silicone Oil and the Needle-Like Crystal of Ethylene Glycol Distearate

The foaming capability, which is related to the ratio of surfactants, the dosage and the crystallization rate of ethylene glycol distearate (EGDS), is discussed. By the same progress, with the proportion of ammonium lauryl sulfate (AESA) being increased, the foam height of the body care product is linearly improved. The crystal features of EGDS and pearlescence quality of the body care products are strongly linked to the surface aspect, the size distribution of EGDS crystals and their level of aggregation. Comparing the different crystallization processes, when rapidly being cooled with cold water and stirred at the speed of exceeding to 1 000 rpm, the aggregation of the crystals is decreased, and the pearlescence of the body care product is poor. When being ordinary cooled at room temperature and stirred at the speed of no more than 500 rpm, the aggregation of the crystals is increased, and the pearlescence of the body care products is obvious. The microstructures reveal that the oil drops are pierced to smaller by the EGDS needle crystals. Then the smaller oils act as antifoaming agents to cut down the foam height of the body care product. Consequently, the foam height of the body care products with good pearlescent effect is decreased. Furthermore, being added silicone oil emulsion, the foam height falls faster because of demulsifying. The result shows that the silicone oil and the needle-like crystals have a negative synergistic effect on foaming in the body care products.

On-line preconcentration and determination of ultra trace amounts of mercury using surfactant coated alumina modified by dithizone with cold vapor atomic absorption spectrometry

The potential of an inexpensive dithizone immobilized on ammonium lauryl sulfate alumina adsorbent to separate and preconcentrate traces of mercury from vegetables and ground water has been evaluated. A cartridge filled with 100 mg of adsorbent was incorporated to an on-line vapor generation accessory system. Traces of mercury in sample solutions were pumped through the cartridges for 2 min (flow rate of 5 mL min−1) and then eluted from the cartridges with 1 M hydrochloric acid for 1 min at a flow rate of 1 mL min−1. At the same time that mercury is eluted from the cartridges, the eluate is mixed with a 0.02% (m/v) sodium borohydride solution and the mercury cold vapor is swept through the atomization cell with a nitrogen flow of 50 mL min−1. The overall procedure (mercury separation–preconcentration and mercury cold vapor generation–atomization) is completed in around 3 min. The developed method achieves an enrichment factor of 125 with a limit of detection of 0.12 ng mL−1. The repeatability and the accuracy of the overall procedure were successfully assessed.

Online sample concentration in partial-filling chiral electrokinetic chromatography – mass spectrometry.

The concentration sensitivity of a racemic drug (chlorpheniramine maleate) in chiral capillary electrophoresis with electrospray ionization – mass spectrometric detection was improved ~500-fold via stacking. Enantiomeric separation was achieved through the use of a neutral chiral pseudostationary phase (2-hydroxpropyl-β-cyclodextrin), untreated fused-silica capillaries, and the application of a partial-filling technique to prevent the pseudostationary phase from entering the detector. A concentration factor of 50 resulted from field-enhanced sample injection(FESI). However, the higher concentration factor was achieved by combining FESI with micelle-to-solvent stacking (MSS) to increase sample load and focus the analyte band. MSS was achieved by injection of an ammonium lauryl sulfate micellar plug prior to sample injection. The sample diluent was a 20-fold dilution of the background electrolyte (50 mM ammonium acetate, pH 3.5) with 60% acetonitrile. This methodology provided a limit of detection (LOD) of as low as 5 ng/ml of the racemate.

Curly hair: measured differences and contributions to breakage

IntroductionA consumer internet survey conducted by our Institute in2005, of over 1200 women that self-identified as AfricanAmerican, Caucasian, Chinese, or Mexican, determinedthat African-American women experience hair breakageat a statistically higher rate as compared with their Chi-nese, Mexican, and Caucasian counterparts. In fact, 96%said they experienced hair breakage while 23% agreed itwas their biggest hair problem. To better understand thisreported phenomenon of increased fragility, one mustconsider that mechanical fragility of hair may be relatedto innate differences in the structure, the result of variousdiseases, or related to grooming habits and practices. Inthis paper, we review some of the previously reportedstructural differences observed in curly hair, laboratorymeasurements used to evaluate fragility, and the potentialimpact of grooming practices.Historically, human hair was classified along raciallines of Caucasian, Mongolian (Asian), and Negroid(African or of African descent). Early studies investigatedhair diameter, geometric shape, strength, and chemicalreactivity.

Development and Characterization of Gas Diffusion Layer Fabricated Using Carbon Slurry with Ammonium Lauryl Sulfate for Proton Exchange Member Fuel Cells

AbstractThe microporous layer of the gas diffusion layers (GDLs) was fabricated with the carbon slurry dispersed in water containing ammonium lauryl sulfate (ALS) using the wire rod coating method and evaluated the effects on PEMFC performance. GDLs were also fabricated with the carbon slurry dispersed in water containing sodium dodecyl sulfate (SDS) and multiwalled carbon nanotubes (MWCNTs) with isopropyl alcohol (IPA) based for fuel cell performance comparison. Membrane electrode assemblies (MEA) with GDLs fabricated using MWCNTs and SDS exhibit the highest performance at 60 and 70% RH with a peak power density of 1100 and 850 mW.cm−2 using oxygen and air as an oxidant, respectively. This means that the gas diffusion characteristics of these two samples were optimum at 60 and 70% RH with extremely high limiting current density values. It was also found that the composition of the carbon slurry, specifically ALS concentration has the highest peak power density of 1300 and 500 mW.cm−2 for both H2/O2 and H2/Air at 100% RH, respectively. However, SDS and MWCNTs based GDLs exhibited the lowest peak power density values using air as well as with oxygen as an oxidants at 100% RH.

Survival, mobility, and membrane‐bound enzyme activities of freshwater planarian, Dugesia japonica, exposed to synthetic and natural surfactants

Surfactants are a major class of emerging pollutants widely used in large quantities in everyday life and commonly found in surface waters worldwide. Freshwater planarian was selected to examine the effects of different surfactants by measuring mortality, mobility, and membrane-bound enzyme activities. Among the 10 surfactants tested, the acute toxicities of betaine and polyethylene glycol (PEG-200) to planarians were relatively low, with a median lethal concentration (LC50) greater than 10,000 mg/L. The toxicity to planarians of the other eight surfactants based on 48-h LC50 could be arranged in the descending order of cetylpyridinum chloride (CPC) > 4-tert-octylphenol (4-tert-OP) > ammonium lauryl sulfate > benzalkonium chloride > saponin > sodium lauroylsarcosinate > dioctyl sulfosuccinate > dodecyl trimethyl ammonium bromide (DTAB). Both CPC and 4-tert-OP were very toxic to planarians, with 48-h LC50 values <1 mg/L. The median effective concentrations (EC50s) of planarian mobility were in the 0.1 to 50 mg/L range and were in the same range as the 24-h LC50 of planarians exposed to different surfactants, except for DTAB. In addition, significant inhibition of cholinesterase activity activities was found in planarians exposed to 4-tert-OP at 2.5 and 5 mg/L and to saponin at 10 mg/L after 2-h treatments. This result suggests that planarian mobility responses can be used as an alternative indicator for acute toxicity of surfactants after a very short exposure period.

Comparison of Pt/MWCNTs nanocatalysts synthesis processes for proton exchange membrane fuel cells

Platinum on multi-walled carbon nanotubes (MWCNTs) support was synthesized by two different processes to transfer PtCl 6 2 − from aqueous to organic phase. While the first method of Pt/MWCNTs synthesis involved dodecane thiol (DDT) and octadecane thiol (ODT) as anchoring agent, the second method used ammonium lauryl sulfate (ALS) as the dispersion/anchoring agent. The catalyst synthesis with ALS is relatively simple compared to that with thiols and also showed higher performance. The particle size and distribution of platinum were examined by high-resolution transmission electron microscope (HRTEM). The TEM images showed homogenous distribution and uniform particle size of platinum deposited on the surface of MWCNTs. The single cell fuel cell performance of the Pt/MWCNTs synthesized thiols and ALS based electrode containing 0.2 mg (anode) and 0.4 mg (cathode) Pt. cm −2 were evaluated using Nafion-212 electrolyte with H 2 and O 2 gases. The Electrodes with Pt/MWCNTs nanocatalysts synthesized using ALS were characterized by cyclic voltammetry (CV) for durability evaluation using humidified H 2 and N 2 gases at 80 °C along with commercial Pt/C for comparison. CV data showed exceptionally stable electrochemically active surface area for Pt/MWCNTs based membrane electrode assembly compared to that with Pt/C.