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https://www.readbyqxmd.com/read/28532067/development-of-biocompatible-and-safe-polyethersulfone-hemodialysis-membrane-incorporated-with-functionalized-multi-walled-carbon-nanotubes
#1
Muhammad Nidzhom Zainol Abidin, Pei Sean Goh, Ahmad Fauzi Ismail, Mohd Hafiz Dzarfan Othman, Hasrinah Hasbullah, Noresah Said, Siti Hamimah Sheikh Abdul Kadir, Fatmawati Kamal, Mohd Sohaimi Abdullah, Be Cheer Ng
A novel approach in the design of a safe, high performance hemodialysis membrane is of great demand. Despite many advantages, the employment of prodigious nanomaterials in hemodialysis membrane is often restricted by their potential threat to health. Hence, this work focusses on designing a biocompatible polyethersulfone (PES) hemodialysis membrane embedded with poly (citric acid)-grafted-multi walled carbon nanotubes (PCA-g-MWCNTs). Two important elements which could assure the safety of the nanocomposite membrane, i...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532048/surface-grafting-of-eu-3-doped-luminescent-hydroxyapatite-nanomaterials-through-metal-free-light-initiated-atom-transfer-radical-polymerization-for-theranostic-applications
#2
Guangjian Zeng, Meiying Liu, Ruming Jiang, Chunning Heng, Qiang Huang, Liucheng Mao, Junfeng Hui, Fengjie Deng, Xiaoyong Zhang, Yen Wei
We reported a simple and efficient method to prepare the hydrophilic luminescent HAp polymer nanocomposites through the combination of ligand exchange and metal free light initiated surface-initiated atom transfer radical polymerization (SI-ATRP) using 10-phenylphenothiazine (PTH) as organic catalyst and 2-methacryloyloxyethyl phosphorylcholine (MPC) and itaconic acid (IA) as monomers. The biological imaging and drug delivery performance of HAp-poly(MPC-IA) nanorods were examined to evaluate their potential for biomedical applications...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28532014/advanced-review-of-graphene-based-nanomaterials-in-drug-delivery-systems-synthesis-modification-toxicity-and-application
#3
REVIEW
Qi Zhang, Zhuona Wu, Ning Li, Yiqiong Pu, Bing Wang, Tong Zhang, Jiansheng Tao
The discovery of graphene, a notable achievement in the field of novel carbon nanomaterials, has triggered the worldwide exploration of the biomedical applications of this material since 2004 because of its unique properties. The two-dimensional planar structure, large surface area, chemical stability, mechanical stability, and good biocompatibility of graphene are promising for applications in drug delivery systems (DDSs). In this review, we briefly discuss the characteristics, synthesis, and modification of graphene...
August 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28531860/boosting-biomethane-yield-and-production-rate-with-graphene-the-potential-of-direct-interspecies-electron-transfer-in-anaerobic-digestion
#4
Richen Lin, Jun Cheng, Jiabei Zhang, Junhu Zhou, Kefa Cen, Jerry D Murphy
Interspecies electron transfer between bacteria and archaea plays a vital role in enhancing energy efficiency of anaerobic digestion (AD). Conductive carbon materials (i.e. graphene nanomaterial and activated charcoal) were assessed to enhance AD of ethanol (a key intermediate product after acidogenesis of algae). The addition of graphene (1.0g/L) resulted in the highest biomethane yield (695.0±9.1mL/g) and production rate (95.7±7.6mL/g/d), corresponding to an enhancement of 25.0% in biomethane yield and 19...
May 5, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28531816/predicted-phototoxicities-of-carbon-nano-material-by-quantum-mechanical-calculations
#5
Don Betowski
The purpose of this research was to develop a predictive model for the phototoxicity potential of carbon nanomaterials (fullerenols and single-walled carbon nanotubes). This model is based on the quantum mechanical (ab initio) calculations on these carbon-based materials and comparison of the triplet excited states of these materials to published work relating phototoxicity of polynuclear aromatic hydrocarbons (PAH) to their predictive triplet excited state energy. A successful outcome will add another tool to the arsenal of predictive methods for the U...
March 31, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28531655/competitive-adsorption-behavior-toward-metal-ions-on-nano-fe-mg-ni-ternary-layered-double-hydroxide-proved-by-xps-evidence-of-selective-and-sensitive-detection-of-pb-ii
#6
Shan-Shan Li, Min Jiang, Tian-Jia Jiang, Jin-Huai Liu, Zheng Guo, Xing-Jiu Huang
Hypersensitive and highly selective nanomaterials for the measurement of heavy metal ions (HMIs) hold a key to electro-analysis. Various works improved the results of analysis but without scientific understanding. Herein, Fe/Mg/Ni-layered double hydroxide (LDH) has been successfully prepared and its electrochemical behavior for Pb(II) detection is also studied using square wave anodic stripping voltammetry (SWASV). The well performance of electrochemistry suggest that the modification with Fe/Mg/Ni-LDH significantly promotes the selectivity and sensitivity toward Pb(II)...
May 11, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28531649/a-bio-based-facile-approach-for-the-preparation-of-covalently-functionalized-carbon-nanotubes-aqueous-suspensions-and-their-potential-as-heat-transfer-fluids
#7
Rad Sadri, Maryam Hosseini, S N Kazi, Samira Bagheri, Nashrul Zubir, K H Solangi, Tuan Zaharinie, A Badarudin
In this study, we propose an innovative, bio-based, environmentally friendly approach for the covalent functionalization of multi-walled carbon nanotubes using clove buds. This approach is innovative because we do not use toxic and hazardous acids which are typically used in common carbon nanomaterial functionalization procedures. The MWCNTs are functionalized in one pot using a free radical grafting reaction. The clove-functionalized MWCNTs (CMWCNTs) are then dispersed in distilled water (DI water), producing a highly stable CMWCNT aqueous suspension...
March 14, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28530824/human-immune-protein-c1q-selectively-disaggregates-carbon-nanotubes
#8
Maximilien Saint Cricq, Jesús Carrete, Christine Gaboriaud, Edmond Gravel, Eric Doris, Nicole Thielens, Natalio Mingo, Wai Li Ling
We atomistically compute the change in free energy upon binding of the globular domain of the complement protein C1q to carbon nanotubes (CNTs) and graphene in solution. Our modeling results imply that C1q is able to disaggregate and disperse bundles of large diameter multi-walled CNTs but not those of thin single-walled CNTs, and we validate this prediction with experimental observations. The results support the view of a strong binding, with potential implications for the understanding of the immune response and biomedical applications of graphitic nanomaterials...
May 22, 2017: Nano Letters
https://www.readbyqxmd.com/read/28530806/photoluminescent-hybrids-of-cellulose-nanocrystals-and-carbon-quantum-dots-as-cytocompatible-probes-for-in-vitro-bio-imaging
#9
Jiaqi Guo, Dongfei Liu, Ilari Filpponen, Leena-Sisko Johansson, Jani-Markus Malho, Sakeena Quraishi, Falk Liebner, Hélder A Santos, Orlando J Rojas
We present an approach to construct biocompatible and photoluminescent hybrid materials comprised of carbon quantum dots (CQD) and TEMPO-oxidized cellulose nanocrystals (TO-CNC). First, the amino-functionalized carbon quantum dots (NH2-CQD) were synthesized using a simple microwave method and the TO-CNCs were prepared by hydrochloric acid (HCl) hydrolysis followed by TEMPO-mediated oxidation. The conjugation of NH2-CQD and TO-CNC was conducted via carbodiimide-assisted coupling chemistry. The synthesized TO-CNC@CQD hybrid nanomaterials were characterized using X-ray photoelectron spectroscopy, cryo-transmittance electron microscopy, confocal microscopy and fluorescence spectroscopy...
May 22, 2017: Biomacromolecules
https://www.readbyqxmd.com/read/28530760/group-iii-nitride-nanomaterials-for-biosensing
#10
REVIEW
Xiao Li, Xinyu Liu
Biosensing has found wide applications in biological and medical research, and in clinical diagnosis, environmental monitoring and other analytical tasks. Recognized as novel and outstanding transducing materials because of their superior and unique physical/chemical properties, group III nitride (III-nitride) nanomaterials have been introduced into biosensor development with remarkable advancements achieved in the past few decades. This paper presents the first comprehensive review on biosensor development with III-nitride nanomaterials...
May 22, 2017: Nanoscale
https://www.readbyqxmd.com/read/28530189/marinobacter-lipolyticus-from-red-sea-for-lipase-production-and-modulation-of-silver-nanomaterials-for-anti-candidal-activities
#11
Mohammad Oves, Huda A Qari, Nadeen M Felemban, Mohammad Z Khan, Zulfiqar A Rehan, Iqbal M I Ismail
In this study, the bacterial strain CEES 33 was isolated from the coastal area of the Red Sea, Jeddah, Kingdom of Saudi Arabia. The bacterium isolate was identified and characterized by using biochemical and molecular methods. The isolate CEES 33 has been identified as Gram-negative rod shaped and cream pigmented spherical colonies. It also demonstrated a positive result for nitrate reduction, oxidase, catalase, citrate utilization, lipase and exopolysaccharide production. Strain CEES 33 was characterized at the molecular level by partial 16S rRNA sequencing and it has been identified as Marinobacter lipolyticus (EMBL|LN835275...
June 2017: IET Nanobiotechnology
https://www.readbyqxmd.com/read/28530092/fibroblast-cytophilic-and-hela-cytotoxic-dual-function-carbon-nanoribbon-network-platform
#12
A K M Rezaul Haque Chowdhury, Bo Tan, Krishnan Venkatakrishnan
Carbon nanomaterials have emerged as a promising material in cancer diagnosis and therapy. Carbon nanomaterials/nanostructures (C-C molecular structure) act as a carrier/skeleton and require further surface modification through functionalization with chemicals or biomolecules to attain a cell response. We report the synthesis of a novel carbon nanoribbon network (CNRN) platform that possesses a combination of C-C and C-O bond architecture. The bioactive CNRN showed enhanced ability for cell adhesion. Most importantly, it induced opposite cell responses from healthy cells and cancerous cells, cytophilic to fibroblasts but cytotoxic to HeLa cells...
May 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28529146/multiple-endpoints-to-evaluate-pristine-and-remediated-titanium-dioxide-nanoparticles-genotoxicity-in-lung-epithelial-a549-cells
#13
Andrea Stoccoro, Sebastiano Di Bucchianico, Fabio Coppedè, Jessica Ponti, Chiara Uboldi, Magda Blosi, Camilla Delpivo, Simona Ortelli, Anna Luisa Costa, Lucia Migliore
Titanium dioxide nanoparticles (TiO2 NP) are broadly used in a wide range of applications. Several studies have reported that TiO2 NP possess cytotoxic and genotoxic properties that could induce adverse health effects in humans. The FP7 Sanowork project was aimed to minimize occupational hazard and exposure to engineered nanomaterials (ENM), including TiO2 NP, through the surface modification in order to avoid possible adverse toxic effects for humans. In this study we investigated cytotoxicity, genotoxicity and epigenetic properties of TiO2 NP uncoated and coated with silica or citrate, as well as of the benchmark material P25...
May 18, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28528626/colloid-particle-formulations-for-antimicrobial-applications
#14
REVIEW
Ahmed F Halbus, Tommy S Horozov, Vesselin N Paunov
Colloidal particles are being extensively studied in various antimicrobial applications due to their small size to volume ratio and ability to exhibit a wide spectrum of antibacterial, antifungal, antialgal and antiviral action. The present review focuses on various nanoparticles (NPs) of inorganic, organic and hybrid materials, and discusses some of the methods for their preparation as well as mechanisms of their antimicrobial action. We consider the antimicrobial applications of metal oxide nanoparticles (ZnO, MgO, CuO, Cu2O, Al2O3, TiO2, CeO2 and Y2O3), metal nanoparticles (NPs), such as copper, silver and gold, metal hydroxide NPs such as Mg(OH)2 as well as hybrid NPs made from biodegradable materials, such as chitosan, lignin and dextran, loaded with other antimicrobial agents...
May 12, 2017: Advances in Colloid and Interface Science
https://www.readbyqxmd.com/read/28528133/chemical-synthesis-of-flower-like-hybrid-cu-oh-2-cuo-electrode-application-of-polyvinyl-alcohol-and-triton-x-100-to-enhance-supercapacitor-performance
#15
S K Shinde, V J Fulari, D-Y Kim, N C Maile, R R Koli, H D Dhaygude, G S Ghodake
In this research article, we report hybrid nanomaterials of copper hydroxide/copper oxide (Cu(OH)2/CuO). A thin films were prepared by using a facile and cost-effective successive ionic layer adsorption and reaction (SILAR) method. As-synthesized and hybrid Cu(OH)2/CuO with two different surfactants polyvinyl alcohol (PVA) and triton-X 100 (TRX-100) was prepared having distinct morphological, structural, and supercapacitor properties. The surface of the thin film samples were examined by scanning electron microscopy (SEM)...
May 9, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28527338/facile-mass-production-of-nanoporous-sno2-nanosheets-as-anode-materials-for-high-performance-lithium-ion-batteries
#16
Wenli Wei, Pengcheng Du, Dong Liu, Hongxing Wang, Peng Liu
Facile one-step ultrasonic-assisted chemical precipitation strategy has been developed for the mass production of SnO2 nanomaterials with different morphologies. As anode material for lithium-ion batteries, the nanoporous SnO2 nanosheets exhibited an extremely high initial specific capacity of 2231mAh/g in comparison with 1242mAh/g of the SnO2 microcrystals and 1244mAh/g of the nanoporous SnO2 nanoflowers. Meanwhile the nanoporous SnO2 nanosheet electrode displayed a specific capacity of 688mAh/g after 60 cycles at 0...
May 9, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28527321/short-term-exposure-to-gold-nanoparticle-suspension-impairs-swimming-behavior-in-a-widespread-calanoid-copepod
#17
François-Gaël Michalec, Markus Holzner, Alexandre Barras, Anne-Sophie Lacoste, Loïc Brunet, Jae-Seong Lee, Christian Slomianny, Rabah Boukherroub, Sami Souissi
Calanoid copepods play an important role in the functioning of marine and brackish ecosystems. Information is scarce on the behavioral toxicity of engineered nanoparticles to these abundant planktonic organisms. We assessed the effects of short-term exposure to nonfunctionalized gold nanoparticles on the swimming behavior of the widespread estuarine copepod Eurytemora affinis. By means of three-dimensional particle tracking velocimetry, we reconstructed the trajectories of males, ovigerous and non-ovigerous females...
May 17, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28525935/design-synthesis-and-characterization-of-doped-titanium-oxide-nanomaterials-with-environmental-and-angiogenic-applications
#18
Susheel Kumar Nethi, Neeraja Aparna Anand P, Beatriz Rico-Oller, Antonio Rodríguez-Diéguez, Santiago Gómez-Ruiz, Chitta Ranjan Patra
Since the last decade, the metal composite nanostructures have evolved as promising candidates in regard to their wide applications in the fields of science and engineering. Recently, several investigators identified the titanium based nanomaterials as excellent agents for multifunctional environmental and biomedical applications. In this perspective, we have developed a series of zinc-doped (2 and 5%) titanium oxide-based nanomaterials using various reaction conditions and calcination temperatures (TZ1-TZ3: calcined at 500°C, TZ4-TZ6: calcined at 600°C and TZ7-TZ9: calcined at 700°C)...
May 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28525855/surface-design-of-magnetic-nanoparticles-for-stimuli-responsive-cancer-imaging-and-therapy
#19
REVIEW
Taegyu Kang, Fangyuan Li, Seungmin Baik, Wei Shao, Daishun Ling, Taeghwan Hyeon
Magnetic nanoparticles (MNPs) have been extensively studied for their potential applications to cancer diagnosis and treatment. However, various obstacles limit the use of nanoparticles for delivery in the tumor microenvironment. As a viable solution to such obstacles, advances in nanoparticle surface engineering augmented by a profound understanding of cancer physiology present new opportunities for MNP-based imaging and therapeutic agents. Stimuli-responsive ligands, rationally designed to interact with various physicochemical aspects, can improve the performance of MNPs in cancer-targeted imaging and therapy...
May 8, 2017: Biomaterials
https://www.readbyqxmd.com/read/28525393/novel-nb3o7f-ws2-hybrid-nanomaterials-with-enhanced-optical-absorption-and-photocatalytic-activity
#20
Fei Huang, Zhen Li, Aihua Yan, Hui Zhao, Hao Feng, Yuehua Wang
Coping with the increasing environmental issues, niobium oxyfluoride (Nb3O7F) as a novel semiconductor is a kind of promising photocatalyst due to its outstanding electronic and optoelectrinic properties. However, the photocatalytic performance of Nb3O7F is restricted in practical application due to its weak optical absorption and low carrier separation. In this work, novel Nb3O7F/WS2 hybrid nanocomposites with superior optical absorption and photocatalytic activity have been successfully synthesized by a facile two-step sol-hydrothermal technique...
May 19, 2017: Nanotechnology
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