Showing papers by "Rong Wang published in 2019"
TL;DR: In this work, nano-bimetallic Co/ Fe oxides with different stoichiometric Co/Fe ratios were prepared using a novel one-step solution combustion method and the results showed that SMX degradation also involved a non-radical oxidation, which could be verified by the degradation experiment without catalyst as well as the detection of 1O2.
130 citations
TL;DR: Novel Janus MD membranes with multilevel roughness are designed to mitigate foulant adhesion and prevent pore wetting in the MD process and demonstrated outstanding antifouling properties and salt rejection performances in comparison to membranes with single-level structures.
Abstract: Commercial hydrophobic poly(vinylidene fluoride) (PVDF) membranes are vulnerable to membrane fouling and pore wetting, hampering the use of membrane distillation (MD) for the treatment of surfactant- and oil-containing feed streams. To address these challenges, we designed novel Janus membranes with multilevel roughness to mitigate foulant adhesion and prevent pore wetting. Specifically, fouling- and wetting-resistant Janus MD membranes with hierarchically structured surfaces were tailored via a facile technique that involved oxidant-induced dopamine polymerization followed by in situ immobilization of silver nanoparticles (AgNPs) on commercial PVDF hollow fiber substrates. These membranes demonstrated outstanding antifouling properties and salt rejection performances in comparison to membranes with single-level structures. We ascribed the membranes' excellent performances to the coupled effects of improved surface hydrophilicity and self-healing mechanism brought about by AgNPs. Furthermore, the newly engineered membranes exhibited antibacterial properties in Bacillus acidicola solutions as evidenced by clear inhibition zones observed on a confocal laser scanning microscope. The development of hierarchically structured Janus MD membranes with multilevel roughness paves a way to mitigate membrane fouling and pore wetting caused by low-surface-tension feed streams in the MD process.
85 citations
TL;DR: In this paper, the structure of hollow fiber supports was finely tuned and characterized via a series of techniques, which provided a link to the physicochemical properties of the interfacially polymerized polyamide films.
84 citations
TL;DR: In this article, a pore-functionalized ceramic membrane with isotropically impregnated cobalt oxide (CoCM) was prepared via an in-situ self-sacrificed template method and applied for sulfamethoxazole (SMX) degradation by peroxymonosulfate (PMS) activation under a dead-end membrane filtration mode.
Abstract: In this study, a pore-functionalized ceramic membrane with isotropically impregnated cobalt oxide (CoCM) was prepared via an in-situ self-sacrificed template method and applied for sulfamethoxazole (SMX) degradation by peroxymonosulfate (PMS) activation under a dead-end membrane filtration mode. The physical and chemical properties of the membranes were characterized via FESEM, AFM, XRD and XPS. Results indicated that Co3O4 had been impregnated into the macropores uniformly throughout the whole ceramic membrane without pore blocking. The formation of Co O Al bonding inhibited the leaching of cobalt during the filtration while the hydroxyl group Co−OH played a crucial role during the radical generation. The contact angle of CoCM decreased, resulting in a higher pure water permeability as compared to the original ceramic membrane. The catalytic degradation of SMX showed that its removal efficiency could be influenced by both contact time and PMS dosage. CoCM exhibited superior antifouling property during the humic acid (HA) removal study. The stability and regeneration of CoCM were investigated. Furthermore, the radical quenching experiment was conducted and the concentration of sulfate radical was quantitatively estimated. Finally, the PMS activation as well as organics removal mechanism in CoCM via the synergistic coupling of catalytic Co3O4 and membrane separation were proposed.
83 citations
TL;DR: Salvianolic acid A (SA-A), a traditional Chinese medicine extracted from the plant Danshen, could effectively inhibit the liver fibrosis, which is induced by CCl4 in vivo, and the molecular mechanisms behind it are closely associated with the regulation of PI3K/AKT/mTOR, Bcl-2/Bax and caspase-3/cleaved casing pathways.
Abstract: Background: Liver fibrosis occurs due to chronic liver disease due to multiple pathophysiological causes. The main causes for this condition are chronic alcohol abuse, nonalcoholic steatohepatitis, and infection due to hepatitis C virus. Currently, there is more and more information available about the molecular as well as cellular mechanisms, which play a role in the advancement of liver fibrosis. However, there is still no effective therapy against it. Purpose: In order to find an effective treatment against liver fibrosis, our study explored whether salvianolic acid A (SA-A), a traditional Chinese medicine extracted from the plant Danshen, could effectively inhibit the liver fibrosis, which is induced by CCl4 in vivo. Methods: The effects of SA-A were evaluated by assessing the parameters related to liver fibrosis such as body weight, histological changes, and biochemical parameters. Thereafter, the related protein or gene levels of P13K/AKT/mTOR, Bcl-2/Bax and caspase-3/cleaved caspase-3 signaling pathways were determined by western blotting, real-time PCR or immunohistochemistry staining. Results: According to the results of our study, SA-A could reduce liver fibrosis by inhibiting liver function, liver fibrosis index, collagen deposition, and improving the degree of liver fibrosis in rats. Mechanistically, the PI3K/AKT/mTOR signaling cascade was inhibited by SA-A to prevent the stimulation of hepatic stellate cell, as well as the synthesis of extracellular matrix, and regulated Bcl-2/Bax and caspase-3/cleaved caspase-3 signaling pathways to prevent hepatocyte apoptosis. Conclusion: The novel findings of this study suggested that SA-A could reduce liver fibrosis and the molecular mechanisms behind it are closely associated with the regulation of PI3K/AKT/mTOR, Bcl-2/Bax and caspase-3/cleaved caspase-3 signaling pathways.
83 citations
TL;DR: In this paper, the authors focus on high-performance, antiwetting and antifouling membranes as potential solutions to address the challenges of pore wetting and membrane fouling.
78 citations
TL;DR: In this article, an antifouling low-pressure nanofiltration (NF) membrane was designed and fabricated via rapid co-deposition of polydopamine (PDA)/polyethylenimine (PEI) on electrostatic layer-by-layer (LBL) assembled polyethersulfone (PES) flat sheet membrane followed by crosslinking with glutaraldehyde.
78 citations
TL;DR: Results suggest that combination of the identified novel depolymerase Dep42, encoded by the phage SH-KP152226, with antibiotics may represent a promising strategy to combat infections caused by drug-resistant and biofilm-forming K. pneumoniae.
Abstract: The increasing prevalence of infections caused by multidrug-resistant Klebsiella pneumoniae necessitates the development of alternative therapies. Here, we isolated, characterized, and sequenced a K. pneumoniae bacteriophage (SH-KP152226) that specifically infects and lyses K. pneumoniae capsular type K47. The phage SH-KP152226 contains a genome of 41,420 bp that encodes 48 predicted proteins. Among these proteins, Dep42, the gene product of ORF42, is a putative tail fiber protein and hypothetically possesses depolymerase activity. We demonstrated that recombinant Dep42 showed specific enzymatic activities in the depolymerization of the K47 capsule of K. pneumoniae and was able to significantly inhibit biofilm formation and/or degrade formed biofilms. We also showed that Dep42 could enhance polymyxin activity against K. pneumoniae biofilms when used in combination with antibiotics. These results suggest that combination of the identified novel depolymerase Dep42, encoded by the phage SH-KP152226, with antibiotics may represent a promising strategy to combat infections caused by drug-resistant and biofilm-forming K. pneumoniae.
76 citations
TL;DR: 3D boron nitride (BN) network was constructed as heat conduction pathway in polystyrene (PS) matrix based on oil-water interface assembly in this work and it was demonstrated that the storage modulus and thermal stability of the composite substrate were dramatically improved by the BN network.
Abstract: Thermally conductive polymer packaging material is of great significance for the thermal management of electronics. Inorganic thermally conductive fillers have been demonstrated as a convenient app...
71 citations
TL;DR: In this paper, an AQP incorporated vesicles were embedded into the selective layer of an optimized thin film composite (TFC) membrane and the resultant membrane, denoted as ASW, exhibited a stable water flux around 20Lm−m−2·h−1 and 99% NaCl rejection at a constant pressure of 55 bar using 32,000mg·L−1 NaCl solution as feed in reverse osmosis (RO) measurement.
70 citations
TL;DR: The results of nitrifying bacteria activities and quantities detection demonstrated that although NOB activities in both reactors were effectively inhibited, a certain amount of NOB were remained in the control reactor and multiplied rapidly as the DO concentration increased, which might break down the partial nitrification.
TL;DR: Wang et al. as discussed by the authors quantify, at the national level, total N and P runoff losses and the key factors controlling runoff in open-field vegetable systems in China, by summarizing data from 151 publications pertaining to 13 Chinese provinces using literature dating back to 1990.
TL;DR: In this paper, the authors report on year-round measurements of N2O and NO fluxes as well as crop yields for a greenhouse cucumber cultivation, comparing common farmers' practice with two alternative managements, i.e., drip fertigation and reduction of chemical N application by 1/3.
TL;DR: In this article, a new class of thin film nanocomposite (TFN) hollow fiber (HF) membrane of polydopamine (PDA) modified HKUST-1 incorporated in polyamide (PA) matrix supported by polyethersulfone (PES) substrate was constructed via interfacial polymerization method for brackish water desalination in low pressure reverse osmosis (RO) process.
TL;DR: This review critiques the state-of-the-art fabrication and surface-modification methods as well as practices used in the development of omniphobic and Janus MD membranes with specific emphasis on the advances, challenges, and future improvements for application in challenging surfactant- and oil-containing feed streams.
TL;DR: A strategy using combinatorial thermal ablation, adjuvants and immune checkpoint blockade to inhibit metastatic tumor and recurrence via antitumor immune responses post tumor thermal ablated is proposed, which is promising in clinical translation.
TL;DR: In this paper, the effect of co-solvent assisted interfacial polymerization (CAIP) on thin-film composite (TFC) reverse osmosis (RO) membranes was investigated.
TL;DR: In this paper, a modified nonsolvent and thermally induced phase separation (N-TIPS) method was developed by using mixed diluents: dimethyl phthalate (DMP) as a water-immiscible poor solvent for TIPS process, and triethyl phosphate (TEP) as water-miscible neutral solvent to bridge the TIPS and NIPS processes.
TL;DR: The results achieved in this work may provide promising insights into enzyme immobilization on polymeric supports for the development of high-efficiency biocatalytic membranes for CO2 capture in GLMC applications.
TL;DR: It is demonstrated that the pR-PH channels with an open pore can transport water smoothly and efficiently and establish a tangible foundation for developing highly efficient artificial water channel-based biomimetic membrane for water purification applications.
Abstract: Synthetic water channels offer great promise to replace natural aquaporins (AQPs) for making new-generation biomimetic membranes for water treatment. However, the water permeability of the current synthetic water channels is still far below that of AQPs. Here, peptide-attached (pR)-pillar[5]arene (pR-PH) channels are reported to mimic the high permeability of AQPs. It is demonstrated that the pR-PH channels with an open pore can transport water smoothly and efficiently. The pR-PH channels are competitive with AQPs in terms of water permeability and are much superior to diastereomer peptide-attached (pS)-pillar[5]arene (pS-PH) and other reported synthetic water channels. The exceptional water-transport properties of the pR-PH channels are further demonstrated in a composite polymeric membrane that incorporates the nanochannels into the top selective layer. This membrane gives a significantly improved water flux while retaining high salt rejection. The results establish a tangible foundation for developing highly efficient artificial water channel-based biomimetic membrane for water purification applications.
TL;DR: In this article, a thin polyamide layer with a thickness 30-40 nm was applied on the inner surface of the ceramic substrate by circulating the monomers of branched polyethyleneimine (PEI), piperazine (PIP), and trimesoyl chloride (TMC) through the membrane lumen.
TL;DR: Using quantitative polymerase chain reactions (qPCR) and high-throughput sequencing of microbial 16S rRNA gene, it is demonstrated that the abundance of facultative anaerobic denitrifiers in the rhizoplane was the most of the three niches, and that in the water (5-10 cm) was the less and in the sediment was the least.
TL;DR: In this article, a composite hollow fiber membrane that efficiently recovers dissolved methane (dCH4) from anaerobic wastewater treatment effluents via membrane contactor (MC) process is presented.
TL;DR: The investigation showed that the amount of antibiotic residues during the cold season was much higher than that during the warm season, and tetracyclines were the main antibiotic residues in the two swine farms, with TILM second.
TL;DR: In this paper, mixed-matrix membranes containing a porous organic framework (SNW-1 nanoparticles) and a cobalt-based complex (Co(acac)3) were fabricated using the solution-casting technique for potential applications in O2/N2 separation.
TL;DR: Soil fertilized with swine waste is an essential pathway for the dissemination of microbial pollutants from concentrated swine farms to the public, and fertilization intervals of livestock wastes should be lengthened over the ARG active phase.
TL;DR: A simple and versatile strategy to realize a broad spectral overlap by creating multipolar plasmon resonances near the semiconductor band edge was introduced and Au/Ag/Cu2O NRs were found to display enhanced visible light photocatalytic activity compared to spherical Au/ Ag/ Cu2O nanoparticles.
Abstract: One of the critical challenges for semiconductor photocatalysis is the high efficiency utilization of solar energy. For plasmonic metal-semiconductor photocatalysts, the photocatalytic activity over an extended wavelength range for a photoresponsive semiconductor could be significantly improved either via the direct electron transfer (DET) or via the plasmon-induced resonant energy transfer (PIRET). Still, the narrow spectral overlap of plasmon and the semiconductor band edge is a key factor in restricting the development of PIRET. Herein, we have introduced a simple and versatile strategy to realize a broad spectral overlap by creating multipolar plasmon resonances near the semiconductor band edge. Cu2O coated Au/Ag nanorods (NRs) were prepared using a facile wet chemistry method. Transverse plasmon modes of Au/Ag/Cu2O NRs can split into dipole and octupole plasmon modes. The core aspect ratio and shell thickness could be used to regulate these two modes for extending the spectral overlap of plasmon resonance and the Cu2O band edge. Au/Ag/Cu2O NRs were found to display enhanced visible light photocatalytic activity compared to spherical Au/Ag/Cu2O nanoparticles. The enhancement mechanism was ascribed to both dipole and octupole plasmon modes boosting electron-hole separation in Cu2O via PIRET as confirmed by transient absorption measurements.
TL;DR: In this article, a large-area (1333 cm2) GO-based laminate membranes were fabricated via doctor-blade casting of gel-like slurries prepared by incorporating calcium ions (Ca2+), ferric ions (Fe3+), polyethylene oxide (PEO), or polyethylenesimine (PEI) as crosslinkers.
TL;DR: In this article, a polyacrylonitrile (PAN)-induced carbon membrane with in-situ encapsulated cobalt crystal was developed via a one-step carbonization method and applied for peroxymonosulfate (PMS) activation.
TL;DR: Future studies are needed to further improve the modified DNDC so as to better simulate the effects of rainfall/irrigation and deep placement of fertilizers on NH3 volatilization from calcareous soils cultivated with upland crops.