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1. Removal Efficiency and Mechanism of Cr(VI) from Aqueous Solution by Maize Straw Biochars Derived at Different Pyrolysis Temperatures

Author:
Wang, Haixia; Zhang, Mingliang; Lv, Qi
Source:
Water 2019 v.11 no.4
ISSN:
2073-4441
Subject:
Fourier transform infrared spectroscopy; X-ray photoelectron spectroscopy; adsorbents; adsorption; aqueous solutions; biochar; chromium; corn straw; electrons; moieties; pH; pyrolysis; redox potential; temperature
Abstract:
... The removal efficiency and mechanism of Cr(VI) removal from aqueous solution on semi-decomposed maize straw biochars pyrolyzed at 300 to 600 °C were investigated. The removal of Cr(VI) by the biochars decreased with pyrolysis temperature increasing from 300 to 600 °C, and the maximum removal capacity of Cr(VI) for maize straw biochar pyrolyzed at 300 °C was 91 mg/g at pH 2.0. The perce ...
DOI:
10.3390/w11040781

2. Options for Removing Refractory Organic Substances in Pre-Treated Process Water from Hydrothermal Carbonization

Author:
Fettig, Joachim; Austermann-Haun, Ute; Meier, Jan-Felix; Busch, Anna; Gilbert, Eva
Source:
Water 2019 v.11 no.4
ISSN:
2073-4441
Subject:
activated carbon; adsorption; biodegradation; hydrothermal carbonization; models; molecular weight; mulches; organic matter; ozonation; spent grains
Abstract:
... Granular activated carbon (GAC) adsorption, as well as ozonation in combination with biodegradation was investigated in order to remove refractory organics from biologically pre-treated process waters (PW) produced by the hydrothermal carbonization (HTC) of spent grains and fine mulch. Kinetic tests revealed that the organics in spent grains PW had much lower molecular weights than organics in fin ...
DOI:
10.3390/w11040730

3. Behavior of TiO<sub>2</sub> and CeO<sub>2</sub> Nanoparticles and Polystyrene Nanoplastics in Bottled Mineral, Drinking and Lake Geneva Waters. Impact of Water Hardness and Natural Organic Matter on Nanoparticle Surface Properties and Aggregation

Author:
Ramirez, Lina; Ramseier Gentile, Stephan; Zimmermann, Stéphane; Stoll, Serge
Source:
Water 2019 v.11 no.4
ISSN:
2073-4441
Subject:
adsorption; cations; ceric oxide; dissolved organic carbon; drinking; drinking water; drinking water treatment; nanoplastics; pH; polystyrenes; risk assessment; titanium dioxide; water hardness; Lake Geneva
Abstract:
... Intensive use of engineered nanoparticles (NPs) in daily products ineluctably results in their release into aquatic systems and consequently into drinking water resources. Therefore, understanding NPs behavior in various waters from naturel to mineral waters is crucial for risk assessment evaluation and the efficient removal of NPs during the drinking water treatment process. In this study, the im ...
DOI:
10.3390/w11040721

4. Adsorption of Phosphates from Aqueous Solutions on Alginate/Goethite Hydrogel Composite

Author:
Siwek, Hanna; Bartkowiak, Artur; Włodarczyk, Małgorzata
Source:
Water 2019 v.11 no.4
ISSN:
2073-4441
Subject:
adsorbents; adsorption; aquatic environment; aqueous solutions; calcium chloride; chemical composition; chemical precipitation; crosslinking; gelation; goethite; hydrogels; ions; lakes; metals; pH; phosphates; phosphorus; sodium alginate; temperature; water pollution
Abstract:
... The basic process to reduce the phosphate ions in aquatic environments is to move the phosphorus circulation processes on the water–sediment phase boundary towards depositing it in the solid phase through chemical precipitation or adsorption. Modern technologies for removal of phosphorus can be based on cheap and environmentally friendly natural polysaccharides modified with multivalent metals. In ...
DOI:
10.3390/w11040633

5. Rapid detection of dibutyl phthalate in liquor by a semi-quantitative multicolor immunosensor with naked eyes as readout

Author:
Huang, Yanling; Lin, Yue; Luo, Fang; Wang, Peilong; Wang, Jian; Qiu, Bin; Guo, Longhua; Lin, Zhenyu
Source:
Analytical methods 2019 v.11 no.4 pp. 524-529
ISSN:
1759-9679
Subject:
adsorption; antibodies; color; detection limit; dibutyl phthalate; foods; gold; immunosensors; nanogold; nanorods; oxidation; peroxidase; rapid methods; surface plasmon resonance
Abstract:
... Excessive intake of dibutyl phthalate (DBP) can cause serious health problems. Hence, it is necessary to develop some simple yet sensitive method to monitor DBP level in foods. In this study, a competitive multicolor immunosensor for DBP detection has been proposed based on the etching of gold nanorods (GNRs) using naked eyes as readout. DBP was immobilized on the surface of the wells by physical ...
DOI:
10.1039/c8ay02369g

6. Rapid preconcentration of palladium and rhodium using magnetic graphene oxide/silicon dioxide nanocomposite prior to FAAS determination

Author:
Mohammadi, Sayed Zia; Karimi, Mohammad Ali; Mofidinasab, Nastaran
Source:
Analytical methods 2019 v.11 no.4 pp. 454-461
ISSN:
1759-9679
Subject:
adsorbents; adsorption; analytical methods; detection limit; dust; graphene oxide; ions; magnetism; nanocomposites; pH; palladium; rhodium; silica; standard deviation
Abstract:
... The present study was conducted to evaluate the capability of magnetic graphene oxide/silicon dioxide nanocomposites as a novel adsorbent for the separation and preconcentration of trace amounts of Pd(ii) in the presence of Rh(iii) ions prior to FAAS determination. The results indicated that Pd(ii) and Rh(iii) ions were quantitatively adsorbed on the adsorbent at pH values of 7–8. Under empirical ...
DOI:
10.1039/c8ay02230e

7. Ultralong Hydroxyapatite Nanowire-Based Filter Paper for High-Performance Water Purification

Author:
Zhang, Qiang-Qiang; Zhu, Ying-Jie; Wu, Jin; Shao, Yue-Ting; Cai, An-Yong; Dong, Li-Ying
Source:
ACS applied materials & interfaces 2019 v.11 no.4 pp. 4288-4301
ISSN:
1944-8252
Subject:
adsorption; bacteria; cellulosic fibers; filtration; hydrophilicity; hydroxyapatite; ions; lead; nanoparticles; nanowires; paper; strength (mechanics); titanium dioxide; water purification; water shortages
Abstract:
... A new kind of environmentally friendly filter paper based on ultralong hydroxyapatite nanowires (HAPNWs) and cellulose fibers (CFs) with excellent filtration and adsorption properties has been developed for the application in high-performance water purification. The use of polyamidoamine-epichlorohydrin (PAE) resin increases the wet mechanical strength of the as-prepared HAPNW/CF filter paper. The ...
DOI:
10.1021/acsami.8b20703

8. Carbon Nanocoil-Based Fast-Response and Flexible Humidity Sensor for Multifunctional Applications

Author:
Wu, Jin; Sun, Yan-Ming; Wu, Zixuan; Li, Xin; Wang, Nan; Tao, Kai; Wang, Guo Ping
Source:
ACS applied materials & interfaces 2019 v.11 no.4 pp. 4242-4251
ISSN:
1944-8252
Subject:
adsorption; carbon; humans; hydrophobicity; liquid crystals; polymers; porous media; relative humidity; sensation
Abstract:
... Carbon nanocoils (CNCs) are employed to fabricate fast, high-resolution, and reversible humidity sensor based on a flexible liquid crystal polymer (LCP) substrate. The humidity sensor displays fast-response (1.9 s) and recovery time (1.5 s), a broad relative humidity (RH) detection range (4–95%), linearity, repeatability, and stability. The rapid response and recovery are considered to benefit fro ...
DOI:
10.1021/acsami.8b18599

9. Method To Detect Ethanol Vapor in High Humidity by Direct Reflection on a Xerogel Coating

Author:
Dalstein, Olivier; Tabo, Maxime; Alvarez, Elsa; Roux, Lucas; Garuz, Richard; Pasquinelli, Marcel; Azzi, Lhoucine; Bendahan, Marc; Aguir, Khalifa; Loizillon, Jérôme; Abbarchi, Marco; Grosso, David
Source:
ACS applied materials & interfaces 2019 v.11 no.4 pp. 4439-4446
ISSN:
1944-8252
Subject:
adsorption; air; coatings; ethanol; porous media; refractive index; relative humidity; silica; temperature; vapors; volatile organic compounds; xerogels
Abstract:
... A simple double thin-film coating-based device is proposed to quantify the ethanol content in humid air featuring a 10 ppm resolution and spanning a dynamic range from 0 to 1000 ppm. The transduction involves the measurement of the direct optical reflection intensity, changing upon refractive index variations induced by water and ethanol adsorption within the coatings. The first thin-film coating ...
DOI:
10.1021/acsami.8b20479

10. Osteoinductivity of Porous Biphasic Calcium Phosphate Ceramic Spheres with Nanocrystalline and Their Efficacy in Guiding Bone Regeneration

Author:
Li, Xiangfeng; Song, Tao; Chen, Xuening; Wang, Menglu; Yang, Xiao; Xiao, Yumei; Zhang, Xingdong
Source:
ACS applied materials & interfaces 2019 v.11 no.4 pp. 3722-3736
ISSN:
1944-8252
Subject:
adsorption; alginates; apatite; bone formation; ceramics; dogs; granules; medicine; nanocrystals; rabbits
Abstract:
... Conventional biphasic calcium phosphate (BCP) bioceramics are facing many challenges to meet the demands of regenerative medicine, and their biological properties are limited to a large extent due to the large grain size in comparison with nanocrystalline of natural bone mineral. Herein, this study aimed to fabricate porous BCP ceramic spheres with nanocrystalline (BCP-N) by combining alginate gel ...
DOI:
10.1021/acsami.8b18525

11. Adsorption and Diffusion of Benzene in Mg-MOF-74 with Open Metal Sites

Author:
Liu, Anqi; Peng, Xuan; Jin, Qibing; Jain, Surendra Kumar; Vicent-Luna, Jose Manuel; Calero, Sofía; Zhao, Dongfeng
Source:
ACS applied materials & interfaces 2019 v.11 no.4 pp. 4686-4700
ISSN:
1944-8252
Subject:
adsorbents; adsorption; benzene; carbon nanotubes; coordination polymers; cyclohexanes; energy; liquids; molecular dynamics; porosity; temperature; van der Waals forces
Abstract:
... We performed molecular simulations to investigate the adsorption and diffusion of benzene in metal–organic framework Mg-MOF-74. At 300 K and 20 Pa, the saturated loading of benzene reaches 8.2 mmol/g, almost twice of (12,12) single-walled carbon nanotube with a similar pore size, and 93% of the benzene molecules in Mg-MOF-74 can desorb at 390 K. The energy analysis indicates that the van der Waals ...
DOI:
10.1021/acsami.8b20447

12. Rod in Tube: A Novel Nanoplatform for Highly Effective Chemo-Photothermal Combination Therapy toward Breast Cancer

Author:
Zhang, Jun; Luo, Xiang; Wu, Yan-Ping; Wu, Fan; Li, Yi-Fang; He, Rong-Rong; Liu, Mingxian
Source:
ACS applied materials & interfaces 2019 v.11 no.4 pp. 3690-3703
ISSN:
1944-8252
Subject:
adsorption; bovine serum albumin; breast neoplasms; doxorubicin; folic acid; halloysite; irradiation; liver; mice; nanogold; nanoparticles; nanorods; nanotubes; photochemotherapy; renal function; survival rate; synergism; temperature; tissues; toxicity
Abstract:
... Gold nanorods (GNRs) and doxorubicin (DOX) were loaded into the lumen of halloysite nanotubes (HNTs) via a rapid synthesis process (2 min) and physical adsorption. The targeting molecules of folic acid (FA) are then conjugated to HNTs via reactions with bovine serum albumin (BSA). The formation of GNRs in HNTs was verified by different techniques. Au-HNT-DOX@BSA-FA shows a maximum temperature of 2 ...
DOI:
10.1021/acsami.8b17533

13. Chabazite-Type Zeolite Membranes for Effective CO₂ Separation: The Role of Hydrophobicity and Defect Structure

Author:
Lee, Minseong; Hong, Sungwon; Kim, Dongjae; Kim, Eunjoo; Lim, Kyunghwan; Jung, Jae Chil; Richter, Hannes; Moon, Jong-Ho; Choi, Nakwon; Nam, Jaewook; Choi, Jungkyu
Source:
ACS applied materials & interfaces 2019 v.11 no.4 pp. 3946-3960
ISSN:
1944-8252
Subject:
adsorption; aluminum; biogas; carbon; carbon dioxide; confocal microscopy; hydrophobicity; image analysis; light microscopy; methane; models; molecular weight; natural gas; nitrogen; permeability; porosity; quantitative analysis; sieving; silicon; vapors; zeolites
Abstract:
... Chabazite (CHA)-type zeolites are promising for the separation of CO₂ from larger molecules, such as N₂ (relevant to postcombustion carbon capture) and CH₄ (relevant to natural gas/biogas upgrading). In particular, the pore size of CHA zeolites (0.37 × 0.42 nm²) can recognize slight molecular size differences between CO₂ (0.33 nm) and the larger N₂ (0.364 nm) or CH₄ (0.38 nm) molecules, thus allow ...
DOI:
10.1021/acsami.8b18854

14. Controlled Manipulation of Metal–Organic Framework Layers to Nanometer Precision Inside Large Mesochannels of Ordered Mesoporous Silica for Enhanced Removal of Bisphenol A from Water

Author:
Peng, Junyu; Li, Yun; Sun, Xiaoli; Huang, Chaonan; Jin, Jing; Wang, Jincheng; Chen, Jiping
Source:
ACS applied materials & interfaces 2019 v.11 no.4 pp. 4328-4337
ISSN:
1944-8252
Subject:
adsorbents; adsorption; bisphenol A; coordination polymers; porosity; porous media; silica; synergism; zeolites
Abstract:
... Considerable attention has been paid on the design of hierarchical porous metal–organic framework (MOF) composites, which not only enhances the performance but also broadens the applications of MOFs. So far, controlled manipulation of nanometer-thick MOF layers in ordered mesochannels, while retaining their respective intrinsic properties, is still a main challenge because of the difficulty of gro ...
DOI:
10.1021/acsami.8b17508

15. Triple-Bioinspired Burying/Crosslinking Interfacial Coassembly Strategy for Layer-by-Layer Construction of Robust Functional Bioceramic Self-Coatings for Osteointegration Applications

Author:
Jia, Zhaojun; Xiu, Peng; Roohani-Esfahani, Seyed-Iman; Zreiqat, Hala; Xiong, Pan; Zhou, Wenhao; Yan, Jianglong; Cheng, Yan; Zheng, Yufeng
Source:
ACS applied materials & interfaces 2019 v.11 no.4 pp. 4447-4469
ISSN:
1944-8252
Subject:
adhesion; adsorption; bioactive properties; biomimetics; biomineralization; ceramics; coatings; cohesion; crosslinking; electrolytes; hydrophilicity; models; mussels; nanosilver; osteoblasts; oysters; prostheses; rocks; titanium
Abstract:
... Coating bioceramics of inherent bioactivity onto biometallic implants is a straightforward yet promising solution to address poor osteointegration of the latter. One step further, it would be a nontrivial accomplishment to develop a mild, cheap, and universal route to firmly stabilizing, in principle, any ceramics onto any implant substrate, while imparting expectedly versatile biofunctional perfo ...
DOI:
10.1021/acsami.8b20429

16. Chemical Detection Using a Metal–Organic Framework Single Crystal Coupled to an Optical Fiber

Author:
Zhu, Chen; Perman, Jason A.; Gerald, Rex E.; Ma, Shengqian; Huang, Jie
Source:
ACS applied materials & interfaces 2019 v.11 no.4 pp. 4393-4398
ISSN:
1944-8252
Subject:
adsorption; coordination polymers; dielectric properties; interferometers; liquids; monitoring; nitrobenzenes; optical fibers
Abstract:
... The quantitative detection and real-time monitoring of target chemicals in the liquid phase are made possible by combining the tailored adsorption properties of metal–organic framework (MOF) material and the precise measuring capabilities of an optical fiber (OF) Fabry–Pérot interferometer (FPI) device. As the single-crystal MOF host adsorbs target analyte guests from the environment, its dielect ...
DOI:
10.1021/acsami.8b19775