Sustainable Energy & Fuels
·
2023
·Vol. 7
·期 15
·3716-3726
·
IF 5.6
Wansi Lin,Yue Wang,Junhua Zhang,Huai Liu,Lincai Peng
Lignin is a highly abundant biopolymer next to only cellulose, and its transformation into high value-added products is always of interest. It is well known to contain bounteous hydroxyl groups, which can act as natural organic ligands to assemble metal catalysts. Herein, lignin was selected to assemble well-dispersed Zr nanoparticles in polyacrylonitrile nanofiber by electrospinning technology (ZrNPs-lignin/PAN). Systematic characterizations revealed that lignin promoted the coordination between zirconium ions and PAN nanofibers to generate Lewis acid and Lewis base sites. The abundant Lewis acid–base sites confer the composite with remarkable catalytic activity in the transfer hydrogenation (TH) of furfural (FAL) into furfuryl alcohol (FOL), and a quantitative yield of 95.9% with a high TOF of 15.1 h−1 was obtained under mild conditions. ZrNPs-lignin/PAN exhibited good recycling stability and excellent universality in the CTH of a diverse array of carbonyl chemicals into their corresponding products.
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ADVANCED FUNCTIONAL MATERIALS
·
2023
·Vol. 33
·期 49
·2305766
·
IF 19
Ruijie Wang,Fan Jin,Yufen Li,Junkai Gong,Hua Lai,Yuyan Liu,Zhongjun Cheng
The phenomenon of controlled droplet transport has promising application prospects in various fields. Active droplet transport mode is controllable through continuous external stimuli. By contrast, self-transport is a more environmentally friendly and energy-efficient passive transport mode but lacks controllability. In this study, controlled self-transport is achieved by constructing a shape memory polymer (SMP) tube with a lubricated magnetic-responsive gel inner surface. The asymmetrical shape of the tube, combined with the lubricated inner surface, enables directional self-transport of droplets without external stimuli. Furthermore, the resistance on the inner gel surface can be altered by regulating the magnetic field to achieve effective active control during the self-transport process. Thus, smart in situ control of droplet transport can be achieved by integrating the macroscale shape variation of the tube with the dynamic control of the inner surface microstructure. Owing to the fast magnetic responsivity and in situ controllability of the self-transport process, the SMP lubricated tube demonstrates the ability to transport a variety of liquids and can be designed as a micro-reactor for step-by-step droplet detection. The findings of this study may provide guidance for the development of intelligent interface materials and microfluidic devices.
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JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
·
2023
·
IF 6.1
Silan Zhao,Lifang Gong,Guangzhao Guo,Huimin Liu,Shuai Li,Lu Dong,Shuang Deng,Hongyun Hu
A large number of fly ash samples from mechanical grate furnaces at a municipal solid waste incineration (MSWI) plant were examined including Se speciation and content. Se leaching behaviors before and after solidification/stabilization(S/S) treatment were comparatively studied. The results showed that Se in the MSWI fly ash was present mainly in the form of selenite with small amounts of physically adsorbed SeO 2 (s). Se in the low alkalinity ash (pH ∼ 7) tended to be more leachable than that in the high alkalinity ash (pH ∼ 12). The chelation treatment would further raise the risk of Se leaching into the environment from the low alkalinity ash (pH ∼ 7). Three Fe-containing additives (zero-valent iron (ZVI)、α-Fe 2 O 3 and Fe 3 O 4 ) were introduced, respectively in attempt to immobilize Se in the low alkalinity MSWI fly ash. A strong positive effect was found with ZVI addition in terms of Se leaching from low alkalinity chelated MSWI ash. Comparatively, iron oxides showed no obvious effect. The adjustment to ash alkalinity (CaO addition) exhibited a comparable effect to ZVI addition, which provided another option to control Se leaching from low alkalinity chelated ash.
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JOURNAL OF ENVIRONMENTAL MANAGEMENT
·
2023
·
IF 8.7
Shengjie Chen,Fubing Yao,Zhoujie Pi,Li He,Kun Luo,Xiaoming Li,Qi Yang
Salts including NaCl are the most common food flavoring agents so they are often accumulated in food waste (FW) and have potential impact on anaerobic digestion (AD) of FW. In this study, the enhanced biogas production from two-stage anaerobic digestion (TSAD) of FW by microscale zero-valent iron (ZVI) under different salinity (3, 6, 9, and 15 g NaCl/L) was evaluated. Under salinity stress, ZVI becomes a continue-release electron donor due to the enhanced corrosion and dissolution effect and the slow-down surface passivation , further improving the performance of TSAD. Experimental results revealed that the biogas production including H 2 and CH 4 from TSAD with 10 g/L ZVI addition was promoted under salinity stress. The maximum H 2 and CH 4 yield (303.38 mL H 2 /g-VS and 253.84 mL CH 4 /g-VS) were observed at the salinity 9 g NaCl/L. Compared with that of zero salinity, they increased by 40.94% and 318.46%, respectively. Additionally, Sedimentibacter , an exoelectrogen that can participate in the direct interspecies electron transfer , also exhibited the highest relative abundance (34.96%) at the salinity 9 g NaCl/L. These findings obtained in this study might be of great importance for understanding the influence of salinity on the enhanced AD by ZVI.
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JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Chang Li,Yushuang Xu,Wenjun Deng,Na Shen,Yan Chen,Chao Huang,Jinlin Zhu,Runduo Zhu,Wenxia Zou,Rui Li
Among aqueous batteries , the research on the battery employing metal as the anode is still mainly focused on the aqueous zinc-ion battery. Compared with zinc, iron has better stability for reversible deposition, lower cost, and higher specific capacity, which is suitable for aqueous batteries. In this study, an aqueous iron-organic battery is constructed by employing polyaniline as the cathode, Fe plate as the anode, and Fe(CF 3 SO 3 ) 2 as the electrolyte, which demonstrates the hybrid storage mechanism of iron plating/stripping in the anode and transmission of CF 3 SO 3 − in the cathode. The polyaniline-Fe battery delivers a specific capacity of 105.8 mAh g −1 at a current density of 0.05 A g −1 and a stable cycle performance over 5,000 cycles with almost no capacity fading at a current density of 0.2 A g −1 , which provides a new direction for the development of aqueous iron-ion batteries.
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Journal of Water Process Engineering
·
2023
·
IF 7
Zhiguo Chen,Wenqing Cao,Yan Li,Jingpeng Song,Yiyun Liu,Juncheng Liu,Rong Zhang,Rongxin Su,He Bai
The remediation of the chlorinated organic compounds via zero-valent iron (ZVI) and microorganisms coupling method in the groundwater has received increasing attention and research. However, the addition of external microorganisms has poor adaptability in complex environmental applications, and ZVI is easily inactivated and has weak long-term degradation performance in the environment. The existing modification preparation of ZVI modified materials seem relatively lacking economical and environmentally friendly methods. This study obtained a new type of highly efficient degradation bacterium BL5, and introduced an economical and simple method for preparing the functional CS@ZVI biological stimulation materials. The performances of CS@ZVI-BL5 systems for the removal of TCE, chloroform , 1,2-dichloroethane, and chlorobenzene were all reached 100 % after 12 days, which was significantly improved the degradation efficiency by the CS@ZVI or BL5 (95.65 %, 93.64 %, 90.54 %, 88.85 %) alone. This is the first method that extracted and screened an autochthonous high-efficiency degrading bacterium from contaminated sites, and developed a biological stimulation material to improve the remediation. Here we demonstrate that the modified CS@ZVI with BL5 microorganisms synergistically enhanced the degradation performance.
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EUROPEAN JOURNAL OF PHARMACEUTICAL SCIENCES
·
2023
·
IF 4.6
Dan Shen,Tingyu Jin,Yin Xiao,Xingyi Zhu,Yunfen Hua
Pazopanib (PZ) is a multikinase inhibitor, which is mainly used in the treatment of soft tissue sarcoma and advanced renal cancer. However, because of its water insolubility, oral bioavailability is poor. At the same time, photo lability and high dose oral administration lead to severe hepatotoxicity, which is limited in clinical application. In this paper, the novel pazopanib-fumarate disodium glycyrrhizinate nanocrystalline micelles are successfully prepared by liquid-assisted ball milling. The prepared cocrystals and nanocrystalline micelle structures are systematically characterized by X-ray diffraction (XRD), differential scanning calorimetry (DSC) and Fourier Transform Infrared Spectrometer (FTIR) analysis. In vitro solubility and dissolution experiments show that the solubility and dissolution of nanocrystalline micelles are significantly improved under different simulated physiological conditions. The accelerated stabilization experiments show that the nanocrystalline micelles have good physical and chemical stability and showed excellent stability in water (Zeta potential was 62.39 mV). In addition, the in vivo bioavailability of nanocrystalline micelles is 3 times higher than that of PZ, and the therapeutic threshold (> 20 μg/mL) is up to 30 h. This new strategy provides a feasible solution to the undesirable properties of PZ.
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BIORESOURCE TECHNOLOGY
·
2023
·
IF 11.4
Ze-Tong Feng,Xin Ma,Ying-Jun Sun,Jia-Min Zhou,Zu-Gang Liao,Zhi-Cong He,Fei Ding,Qian-Qian Zhang
The nitrogen removal efficiency and distribution of microbial community in a denitrification process aided by zero-valent iron (ZVI) under low carbon-to-nitrogen ratio (C/N) were assessed in this study. Experimental results demonstrated that the nitrogen removal efficiency (TNRE) increased to 96.4 ± 2.72% and 63.3 ± 4.02% after continuous addition of ZVI with molar ratio of ZVI to nitrate (NO 3 – -N) (ZVI/N) of 6 at C/N of 3 and 2, respectively, which was 4% and 7.7% higher than the blank one. Meanwhile, extracellular polymeric substance (EPS) could be used as electron transfer medium and endogenous carbon source for denitrification system and also the production of which increased by 28.43% and 53.10% under ZVI stimulation compared to the control group. Finally, a symbiotic system composed by autotrophic and heterotrophic denitrification bacteria was formed by aid of ZVI. This study proposed new insights into denitrification process improved by ZVI.
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高影响因子
MOLECULES
·
2023
·Vol. 28
·期 14
·5328
·
IF 4.6
Ao Sun,Chenyang Yao,Lifeng Zhang,Yanmin Sun,Jun Nan,Houkai Teng,Jiazhong Zang,Lishan Zhou,Zhenzhong Fan,Qilei Tong
In situ combustion of heavy oil is currently the most suitable thermal method that meets energy consumption and carbon dioxide emission requirements for heavy oil recovery. The combustion catalyst needs to perform multiple roles for application; it should be capable of catalyzing heavy oil combustion at high temperatures, as well as be able to migrate in the geological formation for injection. In this work, a hyperbranched polymer composite nanometal fluid was used as the injection vector for a heavy oil in situ combustion catalyst, which enabled the catalyst to rapidly migrate to the surface of the oil phase in porous media and promoted heavy oil cracking deposition at high temperatures. Platinum (Pt) nanoparticles encapsulated with cetyl-hyperbranched poly(amide-amine) (CPAMAM), with high interfacial activity, were synthesized by a facile phase-transfer method; the resulting material is called Pt@CPAMAM. Pt@CPAMAM has good dispersion, and as an aqueous solution, it can reduce the interfacial tension between heavy oil and water. As a catalyst, it can improve the conversion rate during the pyrolysis of heavy oil in a nitrogen atmosphere. The catalyst structure designed in this study is closer to that exhibited in practical geological formation applications, making it a potential method for preparing catalysts for use in heavy oil in situ combustion to resolve the problem of catalyst migration in the geological formation.Keywords:platinum nanoparticles;hyperbranched polymer;heavy oil;interfacial activity;thermal behavior
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BIORESOURCE TECHNOLOGY
·
2023
·
IF 11.4
Muxiang Liang,Xiaohai Qin,Qi Chang,Chen Wang,Gang Guo,Xiejuan Lu,Xiaohui Wu,Feixiang Zan
The contribution of inoculum-to-substrate ratios (ISRs) and conductive materials (CMs) on the productivity of anaerobic digestion (AD) remains unclear, particularly for protein-rich organic waste. This study investigated whether the addition of CMs, i.e., biochar and iron powder, can overcome the limitations imposed by varying ISRs for the AD of protein as the sole substrate. Results indicate the ISR plays a decisive role in hydrolysis, acidification, and methanogenesis for protein conversion, irrespective of CMs addition. Methane production increased stepwise as the ISR escalated to 3:1. The addition of CMs provided limited improvement, and iron powder even inhibited methanogenesis at a low ISR. Bacterial community variations were contingent on the ISR, while iron powder supplementation significantly elevates the proportion of hydrogenotrophic methanogen. This study demonstrates that the addition of CMs could affect methanogenic efficiency but can not overcome the limitation of ISRs for the AD of protein.
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2023
·
IF 8.6
Guang-En Yuan,Yan-Ge Ma,Yunjie Qin,Yanbin Wang,Yunbei Li,Xin Zhang,Fenglin Yang
Zero-valent iron (ZVI) is widely used in the field of wastewater treatment and groundwater remediation, but it suffers from low reactivity due to the surface passivation layer. In the present work, bisulfite was used as an additive to enhance the reduction activity of ZVI under anoxic conditions. It was found that the reaction kinetic constant of p-nitrophenol reduction in ZVI/bisulfite process was approximately 132 times higher than that by ZVI alone. Bisulfite could dissolve and reduce some iron oxide on the ZVI surface, resulting in the exposure of more active sites like Fe 0 and Fe(II) for p-nitrophenol reduction through direct electron transfer. Common substances in water had no effects on p-nitrophenol degradation by ZVI/bisulfite process, but phosphate suppressed ZVI corrosion seriously. This work provides a simple, cost-effective and environmental-friendly method to improve the reducing activity of ZVI under anoxic conditions.
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Results in Physics
·
2023
·
IF 5.3
Jin Qiu,Wen-Juan Huang,Young Jin Lee,Seung Kim,Xiang-Bai Chen,In-Sang Yang
Magnetism in van der Waals (vdW) materials has recently garnered significant attention due to their potential for advanced applications. In this study, we investigate the magnetic transition in layered MPSe 3 (M = Fe, Mn) bulk flakes utilizing temperature-dependent Raman spectroscopy. Our findings reveal unique features in the Raman spectrum that are strongly correlated with the antiferromagnetic ordering in MPSe 3 . We analyze the spin-dependent Raman scattering modes in MPSe 3 by applying the Suzuki–Kamimura formalism. Consequently, our comparative analyses of the spin correlation function and the reduced magnetization provide compelling evidence of the 2D Ising characteristic especially in FePSe 3 . Our results clearly show the potential of MPSe 3 as a prominent platform for exploring fundamental aspects of low-dimensional magnetism.
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