JOURNAL OF APPLIED POLYMER SCIENCE
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2012
·Vol. 127
·期 1
·402-409
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IF 1.289
Haohua Ye,Zhanxiong Li,Guoqiang Chen,Dan Fan
Bis (1H, 1H, 2H, 2H-perfluoro-octyl)methylenesuccinate (FOM)/ethyl acrylate (EA)/methyl methacrylate (MMA) copolymer (FOME) latexes, FOM/butyl acrylate (BA)/MMA copolymer (FOMB) latexes, and FOM/octyl acrylate (OA)/MMA copolymer (FOMO) latexes were synthesized by continuous emulsion polymerization. Solution polymerization was also carried out to prepare FOMB. The influences of fluorine content and curing conditions on the surface properties of polymer films were discussed. The water and oil repellency of cotton fabrics treated with the FOM copolymers was better than that of conventional poly(fluoroalkyl acrylate)s containing the same fluorinated chain. The polymer films or the treated fabrics were characterized by Fourier transform infrared, scanning electron microscope, atomic force microscopy, thermogravimetric analysis, x-ray photoelectron spectrometry, and wide angle x-ray diffraction. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci, 2013
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CHEMICAL ENGINEERING JOURNAL
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2024
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IF 13.3
Zhichao Kang,Xuerong Han,Chenxu Wang,Hongwen Yu
Combined organic pollutants pose common and serious threats to the global eco-environment. Dibutyl phthalate (DBP) and atrazine (ATZ) are major toxic organic pollutants. However, there are no microorganisms capable of simultaneously removing these two organic pollutants from aquatic systems. An artificial microbial consortium has been considered a promising approach to achieve high removal efficiencies of DBP and ATZ. Therefore, the DBP and ATZ degrading strains, namely Rhodococcus KD0901 and Paenarthrobacter sp. KN0901, were co-cultured in this study based on the metabolic division of labor (MDOL) to construct a KDN0901 consortium. The constructed KDN0901 consortium simultaneously degraded 100 mg·L -1 and 30 mg·L -1 of DBP and ATZ, respectively, within three days of incubation at 15 °C. In addition, KDN0901 showed high adaptability to different pH and temperature conditions, from 5 to 9 and from 4 °C to 35 °C, respectively, especially at low temperatures. According to the constructed cross-feeding model using metabolic analyses, KD0901 provided KN0901 with n-butanol, while KN0901 provided KD0901 with ethylamine and isopropylamine. In this study, DBP and ATZ resulted in serious toxicity in soybean ( G. max ) plants, negatively affecting the growth, photosynthesis, and oxidative stress of the plants. However, the length and biomass of the plants increased by 33.3 % and 273.7 %, respectively, following the KDN0901 treatment, demonstrating the effectiveness of KDN0901 in mitigating the combined toxicity of DBP and ATZ. This study provided an effective, economical, and eco-friendly approach to promoting highly efficient and simultaneous bioremediation of DBP and ATZ-related pollution, especially in cold areas.
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JOURNAL OF MEMBRANE SCIENCE
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2011
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IF 3.673
Song Zhao,Zhi Wang,Xin Wei,Boran Zhao,Jixiao Wang,Shangbao Yang,Shichang Wang
Emeraldine base polyaniline (PANiEB), which is mostly soluble in N-methyl-2-pyrrolidone (NMP) and slightly soluble in water, was used as the additive to prepare polysulfone (PSf)/PANiEB membrane via immersion precipitation process. The behavior of PANiEB during membrane formation and the effect of PANiEB addition on membrane structure and performance were investigated. During membrane formation, a portion of PANiEB, located near the surface of the casting film, could diffuse out of the casting film along with NMP into the coagulation bath and act as pore forming agent. The other portion of PANiEB could remain in the prepared membrane and act as hydrophilic modifier. All the PSf/PANiEB membranes had higher porosity, larger surface pore size, more vertically interconnected finger-like pores and less macrovoids than PSf membrane. PSf/PANiEB membranes exhibited stable pure water flux during membrane compaction at 0.30 MPa TMP and slower pure water flux decline at 0.5 MPa TMP than PSf/polyvinylpyrrolidone (PVP) membranes. Pure water fluxes of PSf/PANiEB membranes were 1.7–2.8 times that of PSf membrane while rejection property including bovine serum albumin, egg albumin and trypsin rejections changed slightly. BSA ultrafiltration experiment showed that PSf/PANiEB membranes had higher flux and better antifouling property than PSf membrane.
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MOLECULES
·
2024
·Vol. 29
·期 17
·4009
·
IF 4.2
Yongjun Wei,Feiping Lu,Xinqi Ai,Ju Lei,Yong Bai,Zhiang Wei,Ziyin Chen
Perovskite solar cells (PSCs) are considered the most promising photovoltaic devices to replace silicon-based solar cells because of their low preparation cost and high photoelectric conversion efficiency (PCE). Reducing defects in perovskite films is an effective means to improve the efficiency of PSCs. In this paper, a lead chelator was selected and mixed into hole transport layers (HTLs) to design and prepare mesoporous PSCs with the structure of ITO/PTAA(BCP)/Al2O3/PVK/PCBM/BCP/Ag, and its modification effect on the buried interface at the bottom of the perovskite layer in the mesoporous structure was explored. The experimental results show that in the presence of mesoporous alumina, the lead chelator can still play a role in modifying the bottom of the perovskite film. The use of lead chelator as passivation material added to the HTL can effectively reduce the residue of dimethyl sulfoxide (DMSO) and decrease the defects at the bottom of the perovskite film, which dramatically improves the device performance. The PCE of the device is increased from 18.03% to 20.78%, which is an increase of 15%. The work in this paper provides an effective method to enhance the performance of PSCs.
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ACS Applied Materials & Interfaces
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2024
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IF 8.3
Yijun Wu,Xiaochen Wang,Longxia Li,Mingyang Wang,Sui Tian,Jinfeng Song,Yunfeng Ma
To enhance the therapeutic effect of sorafenib (SOR) on liver cancer, we have developed a targeted nanodrug delivery system with glutathione (GSH) downregulation functionality. The preparation process comprises the synthesis of amino-functionalized mesoporous silica nanoparticles (MSN-NH2), surface modification with ethacrynic acid (EA), loading of SOR into the pores, and final surface coating with hyaluronic acid (HA) to obtain SOR@MSN-EA@HA (SMEH) nanoparticles. SMEH nanoparticles specifically enter tumor cells via CD44 receptor-mediated endocytosis. EA binds to GSH to consume it, while SOR is slowly released from the pores to exert antitumor effects while inhibiting GSH production. This results in sustained oxidative stress in the cells, thus enhancing the antitumor efficacy. Both in vitro and in vivo antitumor experiments as well as hemolysis tests have demonstrated that SMEH nanoparticles can accurately target liver cancer cells, effectively downregulate GSH concentration, exhibit good antitumor effects, and possess excellent safety, showing great potential in tumor treatment.
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BIORESOURCE TECHNOLOGY
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2024
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IF 9.7
Hao Huang,Shengyao Liu,Xucong Guo,Huoyan Jiang,Yihong Cai,Zixuan Tan,Guangping Zhou,Xiaolan Cai,Min Zhuang,Shaoqu Xie
Efforts are underway to explore alternative methods to the Haber-Bosch process for sustainable ammonia production, while the potential for ammonia extraction from natural nitrogenous biomass is under-exploited. Here, a synergistic catalytic strategy involving acid and modified Ru-based catalysts is communicated for the direct production of amines and ammonia from chitin. Phosphoric acid promotes the cleavage of ether bonds in biomass polymers and also serves to protect amino groups from being removed. Selective hydrogenation, deoxygenation, and amination can be achieved by controllably adjusting the ratio of Ru 0 /Ru n+ . The utilization of nitrogen atoms in chitin can reach up to 95 % (21 % amines, 74 % ammonium), and the catalytic process is applicable to waste shrimp shells. This study demonstrates the possibility of efficient production of nitrogen-containing compounds from abundant biopolymers.
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Nature Communications
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2025
·Vol. 16
·期 1
·1-10
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IF 15.7
Fan Yun,Yan Yunhui,An Qizheng,Xia Zhongcheng,Pan Yuping,Lu Yuxuan,Zhu Zhonghuan,Wang Ruiqi,Liu Qinghua,Zou Yuqin,Li Yongjun,Wang Shuangyin
The use of renewable electricity to drive the electrocatalytic coupling of CO with nitrogen-containing organics offers a promising strategy for producing high-value chemicals. In this work, we conduct a systematic investigation of the coordination effect between iodide and copper oxide to generate Cu δ+ active sites. These Cu δ+ sites enable the electrosynthesis of dimethylacetamide from CO and dimethylamine. Through precise regulation of the electrode surface microenvironment, a dimethylacetamide Faradaic efficiency of 45.6% is achieved at a partial current density of 182.4 mA·cm -2 , with a production rate of 435.9 mmol·g cat. −1 ·h -1 and selectivity approaching 70%. Mechanistic studies reveal that specific adsorption of I - forms an iodide-enriched Cu 0 /Cu + interface that synergistically promotes dimethylacetamide formation by enhancing adsorption of ketene intermediates (*CCO) and facilitating C–N bonds formation. This anion-coordination interfacial engineering strategy demonstrates broad applicability for synthesizing various acetamide derivatives from CO 2 /CO and amine, providing a foundational framework for electrocatalytic C-N coupling in acetamide synthesis.
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Science Advances
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2025
·Vol. 11
·期 32
·
IF 12.5
Rui Zhao,Qi Wang,Yancai Yao,Ruizhao Wang,Long Zhao,Zhiwei Hu,Cheng-Wei Kao,Ting-Shan Chan,Wenhuai Li,Qian Zheng,Jiaxian Wang,Xingyue Zou,Kaiyuan Wang,Jie Dai,Xiang-Kui Gu,Lizhi Zhang
Electrochemical hydrogenation (ECH) of unsaturated carbon-heteroatom bonds is essential for chemical transformations but is often limited by a barrier-intensive surface hydrogen transfer process. The interfacial hydrogen bond (HB) network offers a promising pathway for proton transfer but requires addressing the challenge of nondirectional proton shuttling in three-dimensional space. Here, we create hydrophilic CuO x islands on Cu foam (CF) and load electron-enriched Pd (Pd δ− ) single atoms as proton traps (Pd 1 -CuO x /CF) to guide a fast proton transfer along a modified HB network to enhance ECH efficiency. During ECH, hydrophilic CuO x islands dissociate H 2 O into protons and reconstruct the interfacial HB network for facile proton transfer, while the Pd δ− single atoms reorient H 2 O molecules to electrostatically attract and reduce protons to active hydrogen, enabling efficient substrate hydrogenation. With guided proton transfer, Pd 1 -CuO x /CF achieves 99% hydrogenation efficiency for C─Cl bonds, outperforming Pd 1 -CF (69%) and CuO x /CF (57%), and demonstrates high selectivity and Faradaic efficiency in hydrogenating C═O and C≡N bonds to produce valuable chemicals.
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JOURNAL OF NANOBIOTECHNOLOGY
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2024
·Vol. 22
·期 1
·1-10
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IF 10.6
Hu Yulin,Xu Baoqi,Li Wei,Liang Lin,Fei Fan,Lin Quankui
The human cannot detect light with a wavelength exceeding 700 nm, primarily due to limitations in the physiological structure of the human eye. However, in certain specific scenarios, the ability to detect near-infrared (NIR) light proves to be extremely valuable. To attain this desired capability, NIR up conversion nanoparticles (UCNPs) were prepared and doped in the optical lens materials, aiming to obtain a NIR light “visible” optical lens. It is demonstrated that the doping of UCNPs in the optical lens materials does not significantly impact on their mechanical properties, optical properties, surface properties and it exhibits excellent biocompatibility in cell and animal experiments. More importantly, the UCNPs doping can convert NIR light into visible light within the material effectively and stably. The eyes can “see” the NIR light after wearing such UCNPs doped optical lens. Such NIR light visible optical lens could have great potential in actual applications.Graphical Abstract
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CHEMISTRY OF MATERIALS
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2025
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IF 7
Jiaxing Zhang,Ajuan Zhou,Fang Hao,Kexin Yang,Yiren Yu,Yucai Qin,Xiongfu Zhang,Limin Ren,Anfeng Zhang,Guanghui Zhang,Chunshan Song,Xinwen Guo
The green synthesis of b-axis-oriented ZSM-5 nanosheets (NSs) is essential for facilitating their industrial production. Here, a set of cost-effective and eco-friendly additives is introduced for the tailored synthesis of thin ZSM-5 NSs with a b-axis thickness of 40 nm with the assistance of small seeds. Through a comprehensive exploration of synthesis methods and electron microscopy analysis, this work elucidates the pivotal roles of seeds and additives in controlling the crystal size and steering anisotropic growth kinetics during the crystallization process. The shortened straight channels of the thin ZSM-5 NSs along the b-axis significantly enhance the rapid transport of molecules within the micropores, thus manifesting a distinct catalytic advantage in the alkylation of benzene with methanol and methanol-to-propylene (MTP) conversion. Notably, the utilization of fluorine-free additives in the synthesis of thin ZSM-5 NSs marks an important step forward in zeolite materials, bridging the gap between laboratory experimentation and industrial scale-up.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
·
IF 8.5
Wei Li,Qian Liu,Xun Zhang,Yingfeng Wang,Maoli Yin,Xuchen Tao
This study mainly aimed to reveal the superiority of the positively charged poly( N , N -dimethyl acrylamide) (PC-PDMAA)/poly(ethyl acrylate) (PEA) structure to control poly(sodium allyl sulfonate) (PSAS)/PEA structure in enhancing the sizing properties (viscosity stability, adhesion to fibers (cellulose-based cotton and hydrophobic polyester), and film properties) and desizability of starch, and avoid desizing difficulty issue of positively charged PATAC-grafted starch, due to its worse desizing efficiency. Also, it aimed to survey the influence of grafting ratio on these properties, to develop a new biobased starch adhesive, PC-PDMAA- g -starch- g -PEA (PC-PDMAA- g -S- g -PEA), for the sizing of cotton and polyester. Under a similar grafting ratio, the PC-PDMAA- g -S- g -PEA (IV) showed significantly superior bonding to both fibers, film elongation and endurance ( p < 0.05), and better paste stability and desizability compared to control PSAS- g -starch- g -PEA (PSAS- g -S- g -PEA, IV # ). This demonstrated that combining the PC-PDMAA/PEA branches could further enhance these properties of acid-thinned starch (ATS) compared to the PSAS/PEA branches. Bonding strengths, viscosity stability, desizability, film elongation, and film endurance of PC-PDMAA- g -S- g -PEA were strengthened with an increased grafting ratio from 0 % to 10.80 %. According to these findings, PC-PDMAA- g -S- g -PEA, a novel starch bio-based adhesive with a grafting ratio of 10.80 %, showed promise for use in cotton and polyester warp sizing.
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SOLAR ENERGY
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2025
·
IF 6.6
Huizhen Ke,Qinyi Zhang,Jiawei Zhan,Ying Zhang,Shuyu Zhang,Minglin Zhang,Pengyun Zhang
Open-air-processed perovskite solar cells (PSCs) already garnered significant attention of the international scholars because the uncomplicated and economically viable production methods. Nevertheless, the ambient atmosphere frequently poses a multitude of detrimental factors. For example, suboptimal levels of humidity and the presence of oxygen can result in flawed perovskite crystal formation and numerous surface imperfections, significantly diminishing the power conversion efficiency (PCE) and adversely affecting the final PSCs’ overall stability. Therefore, we employ an optimal approach utilizing liquid-phase small molecules to systematically optimize the perovskite layer, specifically incorporating the additive Perfluoro(4-methylpent-2-ene) (C 6 F 12 ), into an environmentally benign anti-solvent for fabricating the MAPbI 3 layer. The C 6 F 12 molecules, are liquid at room temperature, consist of carbon–carbon single or double bonds and carbon–fluorine bonds. Through Lewis acid-base interactions, the fluorine atoms within C 6 F 12 can establish some covalent bonds with lead and methylamine, as well as form hydrogen bonds with methylamine. These bonding mechanisms proficiently address the vacancies created by iodine (V I ) within the perovskite framework. Meanwhile, the inherent hydrophobic properties of fluorine atoms provide improved moisture resistance to perovskite films produced in atmospheric conditions, thereby enhancing the resultant PSCs’ stabilization. Consequently, the upgrade perovskite layers demonstrate larger grain dimensions and diminished trap density. The optimal device, passivated with C 6 F 12 and processed in air, achieves a champion PCE of 21.25%, approaching the performance of samples fabricated in a glove-box. Furthermore, the non-encapsulated device modified with C 6 F 12 demonstrates exceptional stability across multiple variables. This straightforward and environmentally friendly approach is expected to broaden the applicability of PSCs.
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