SEPARATION AND PURIFICATION TECHNOLOGY
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2023
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IF 8.6
Haitao Shi,Jiajia Yang,Zia Ahmad,Haijun Zhang,Jiping Chen
Solid amine materials have emerged as a class of adsorbent with promising potential for CO 2 capture from gas mixtures, such as biogas and flue gas. In this work, we developed a novel CO 2 capture material via co-grafting of polyethyleneimine (PEI) on mesocellular silica foam (MCF), and (3-glycidyloxypropyl)triethoxysilane (GPTES) was first used as a bridging medium. In the fabrication procedure of MCF@G-35.6 %PEI, a simple impregration of PEI in MCF modified with epoxy groups was conducted. In this procedure, the co-grafting of PEI was realized in terms of a portion of PEI (21.3 wt%) was anchored on the pore surface of MCF via the epoxy/amine reaction and the rest of PEI (14.3 wt%) could be stably attached to the pore surface of MCF via its interaction with anchored PEI. After systematic evaluation, the MCF@G-35.6 %PEI exhibited a maximum CO 2 adsorption capacity of 2.78 mmol/g at 50 °C and 50 %RH and fast adsorption kinetics with equilibrium time (break through from C/C 0 = 5 % to 95 %) is 22.85 min. Meanwhile, outstanding CO 2 adsorption capabilities within a wide temperature range of 30–90 °C and a large concentration range of 5–30 % vol. CO 2 were obtained by the use of MCF@G-35.6 %PEI. More importantly, the MCF@G-35.6 %PEI also exhibited an excellent long-term stability over 50 consecutive cycles. CO 2 adsorption kinetics of the sorbent was found to follow Avrami’s fractional order model and intraparticle diffusion model. Furthermore, temperature-programmed desorption was conducted to investigate the desorption kneitics and adsorption mechanism. All these findings demonstrate the great potential of MCF@G-35.6 %PEI for carbon capture and sequestration (CCS) technology.
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International Journal of Electrochemical Science
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2023
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IF 1.5
Ming Luo
In this work, a novel electrochemical sensor has been constructed for the simultaneous detection of phenol based on the 2D nickel cobalt pyrophosphate nanosheets. The nickel cobalt pyrophosphate was prepared by a facile hydrothermal method. The prepared 2D nickel cobalt pyrophosphate nanosheet was characterized by X-ray diffraction, X-ray photoelectron spectroscopy and scanning electron microscopy. The bimetal nickel cobalt pyrophosphate exhibited favorable catalytic activity in phenol detection. The excellent sensing performance of nickel cobalt pyrophosphate was attributed to its charge transfer mobility and abundant catalytic sites. The nickel cobalt bimetal pyrophosphate was applied to modify glass carbon electrode (GCE) and the obtained sensor processed satisfactory analytic performance in practical detection of phenol. The fabricated electrochemical sensor also exhibited a limit of detection of 0.25 μM and a linear range of 0.5-100 μM using square wave voltammetry (SWV) toward phenol. Besides, the electrochemical sensor showed desirable selectivity, long-term stability and reliable recoveries in real sample test.
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Journal of Materials Chemistry C
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2023
·Vol. 12
·期 6
·2053-2062
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IF 6.4
Zixuan Huang,Jinju Zheng,Hui Fu,Jialiang Jiang,Zilong Li,Chunhong Gu,Zhentao Du,Yang Yang,Weiyou Yang,Jialong Zhao
Non-toxic lead-free vacancy-ordered double perovskites (DPs) are attracting more and more wide interest, thanks to their environment- and eco-friendly nature with exciting applications in modern optoelectronic devices. However, most intrinsic vacancy-ordered DPs exhibit a simple luminescence mode with poor photoluminescence (PL) quantum yield (QY). Herein, we report the exploration of ns2-type ion (Bi3+ and Sb3+) co-doped vacancy-ordered DP Cs2HfCl6 microcrystals (MCs) by a room-temperature precipitation method. Different to single-dopant analogues, the co-doped DPs deliver dual emission bands, which are sensitive to the excitation wavelength and tunable across the full-color region. It is verified that the emission band peaked at 460 nm should have originated from the triplet self-trapped excitons (STEs) of Bi3+ with a lifetime of hundreds of nanoseconds, while that peaked at 590 nm should be ascribed to the microsecond-timescale STEs of Sb3+, respectively. Accordingly, based on these co-doped DPs, high-performance devices such as multi-color anti-counterfeiting and single-component white light emitting diodes (WLEDs) (CIE = (0.344, 0.337), CRI = 84) have been achieved. Moreover, the as-assembled optical temperature sensor exhibits relative sensitivity (SR) and absolute sensitivity (SA) of 1.2% K−1 and 0.013 K−1, respectively, representing their bright future toward multifunctional optoelectronic applications.
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POLYMER BULLETIN
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2023
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IF 3.2
Wang Guoqiang,Dong Yakun
Poly(propylene 2,5-furandicarboxylate) is a kind of bio-based polyester, but the raw material (2,5-furandicarboxylic acid) is expensive. The purpose of this study is to investigate the effect of cheap 2,5-thiophenedicarboxylic acid on the synthesis and properties of poly(propylene 2,5-furandicarboxylate). 2,5-Furandicarboxylic acid, 2,5-thiophenedicarboxylic acid, and 1,3-propanediol were used to synthesize poly(propylene 2,5-furandicarboxylate), poly(propylene 2,5-thiophenedicarboxylate), and poly(propylene 2,5-furandicarboxylate-co-propylene 2,5-thiophenedicarboxylate). The thermal properties, dynamic mechanical properties, and rheological properties were characterized. The structures and properties of the copolymers were compared with those of two homopolymers. Fourier transform infrared spectroscopy and nuclear magnetic resonance spectra suggested that the copolymers were successfully synthesized. Differential scanning calorimetry and wide-angle X-ray diffraction results showed that poly(propylene 2,5-thiophenedicarboxylate) exhibited better crystallization ability. Compared with poly(propylene 2,5-furandicarboxylate), poly(propylene 2,5-thiophenedicarboxylate) is more prone to βrelaxation due to the larger angle between the two carbonyl groups connected to the thiophene ring and sulfur atom with weaker electronegativity.
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Nano Research
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2023
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IF 9.9
Yue Meng,He Xun,Sun Shengjun,Sun Yuntong,Hamdy Mohamed S.,Benaissa Mhamed,Salih Alsamani A. M.,Liu Jun,Sun Xuping
Developing efficient and durable oxygen evolution reaction (OER) catalysts holds great promise for green hydrogen production via seawater electrolysis, but remains a challenge. Herein, we report a Co-doped Ni 3 S 2 nanosheet array on Ni foam (Co-Ni 3 S 2 /NF) as a high-efficiency OER electrocatalyst for seawater. In alkaline conditions, Co-Ni 3 S 2 /NF requires an overpotential of only 368 mV to drive 100 mA·cm −2 , superior to Ni 3 S 2 /NF (385 mV). Besides, it exhibits at least 50-h continuous electrolysis.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2023
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IF 9.9
Qian Ma,Rong Qiang,Yulong Shao,Xiao Yang,Rui Xue,Bowen Chen,Yi Chen,Shijiang Feng
The demand of microwave absorption materials (MAMs) with unique morphologies and electromagnetic (EM) balance has become necessary in recent years. Due to the ease of synthesis and tunable structure, metal–organic frameworks (MOFs) are widely used for this special MAMs. In this study, a new three-dimensional hybrid MOF is proposed that is co-doped with six equally branched star morphologies. The Co-C composite has the same six-branched morphology as that of the precursor. When the EM wave is incident, this special structure makes it easier for the EM wave to enter the material vertically due to the expansion of the incident surface, which is effective in adjusting the transmission path of the electron and the reflection and distribution of the EM wave. Because of the special morphology and magneto-dielectric synergy, the Co-C composite shows a minimum reflection loss ( R Lmin ) of −48.5 dB at 11.0 GHz at an absorption thickness of 3.0 mm, with a microwave absorption bandwidth (EAB) of 6.1 GHz. This research provides a practical guidance for preparing the MAMs of special star structure.
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RSC Advances
·
2023
·Vol. 13
·期 33
·22831-22837
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IF 3.9
Bin Li,Wenrui Hao,Aolin Wu,Mengjing Zhou,Qinghua Yan,Heng Zhang,Lihua Su
The present study synthesized a deep eutectic solvent (DES) using acrylic acid (AA), acrylamide (AM), and choline chloride (ChCl), and added phytic acid (PA) as a filler. Subsequently, the PA/P(AA-co-AM) composite hydrogel was prepared under ultraviolet irradiation and used a photoinitiator. Characterization of the hydrogels was conducted using Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM). The study aimed to investigate the impact of PA on the mechanical properties, fatigue resistance, and electrical conductivity of the composite hydrogel. The findings demonstrated that as the mass fraction of PA increased, the compressive strength of the composite hydrogel gradually decreased, yet the fatigue resistance of the composite hydrogel increased. Specifically, after 10 cycles of compression, the resilience recovery rate of FP0 dropped from 86.9% to 70.4%, the maximum stress recovery rate of FP1 dropped from 97.9% to 89.4%, the maximum stress recovery rate of FP2 dropped from 94.4% to 86.6%, and the maximum stress recovery rate of FP3 dropped from 97.3% to 93%. Overall, this study offers a straightforward and efficient method for producing composite hydrogels with both fatigue resistance and electrical conductivity.
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CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
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2023
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IF 1.2
Xiaoxiao LU,Jingchan ZHAO
The biochar (FS-PNBC) is prepared by pyrolyzing mixed biomass of fish scale and pine needle in varied proportions in a tube furnace. The biochar was characterized by a specific Brunauer-Emmett-Teller (BET) surface area analyzer, scanning electron microscope (SEM), Fourier infrared spectrometer (FTIR), and X-ray diffractometer (XRD). In a solution with an initial concentration of 60 mg/L, the adsorption of ciprofloxacin (CIP) by a 1:1 ratio of fish scale and pine needle co-pyrolyzed biochar (FS-PNBC1) reached 27.97 mg/g. The adsorption properties such as thermodynamics, kinetics, isothermal adsorption, and adsorption factors were investigated by batch experiments. The results indicate that FS-PNBC exhibits a significantly large specific surface area, abundant pore structure, and a high level of porosity. After approximately 180 min, adsorption equilibration was achieved in a pH=4 solution. The kinetic data was well-matched with a quasi-second-order model, suggesting that chemisorption plays a role in the adsorption process. Isothermal adsorption and thermodynamic results indicate that the adsorption of CIP by biochar is more consistent with the Freundlich model, which suggests multilayered non-homogeneous phase adsorption and an exothermic entropy-increasing reaction capable of proceeding spontaneously. FS-PNBC contains oxygen-containing functional groups, and through FTIR analysis, it was observed that hydrogen bonding, π-π bonding, and electrostatic interaction are closely linked to adsorption. This study demonstrates that biochar produced through the co-pyrolysis of fish scale and pine needle has the potential to serve as an efficacious adsorbent for extracting ciprofloxacin from wastewater.
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JOURNAL OF DRUG DELIVERY SCIENCE AND TECHNOLOGY
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2023
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IF 5
Hui-Zhen Yang,Yue Hu,Jia-Jia Chen,Rui-Mo Zhao,Lin Pu,Xiao-Qi Yu,Ji Zhang
Nitric oxide (NO) combined with photodynamic therapy (PDT) is a promising tumor treatment method. Herein, the cationic lipid DPNO(Zn) was developed as co-delivery carrier of NO and photosensitizer Chlorin e6 (Ce6). The target CNO lipid nanoparticles (LNPs) were obtained by solvent exchange method as a NO/PDT combination therapy platform, and biocompatible polymer γPGA could be easily coated to form PCNO for in vivo applications. Fluorescence spectra and confocal imaging experiments showed that the Ce6-loaded LNPs could release NO rapidly under low power UV irradiation with fluorescence self-reporting ability. On the other hand, under the irradiation of 660 nm laser, the LNPs could effectively produce singlet oxygen ( 1 O 2 ). In vitro and in vivo antitumor assays showed that the combination treatment of NO/PDT was more effective in tumor growth inhibition compared with individual NO or PDT treatment. Mechanism studies of NO/PDT combined therapy revealed that 1 O 2 could increase the level of p53 protein, thus activating the caspase 3 apoptosis pathway. And the rapid release of NO could amplify the effect of this pathway by reducing the level of HIF-1α. The NO and 1 O 2 released under laser irradiation could not only directly damage DNA and mitochondria, resulting in tumor cell dysfunction, but also induce the upregulation of iNOS to further enhance the gas therapy efficiency. This study proved that the light-triggered NO/ 1 O 2 generation system can be used as an effective NO/PDT synergistic therapy platform for cancer treatment.
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WATER RESEARCH
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2023
·
IF 12.8
Yun-Jie Wang,Chen-Xuan Li,Yan Meng,Zhi-Yan Guo,Shuo Cui,Xian-Zhong Fu,Hou-Qi Liu,Wen-Qi Xia,Wen-Wei Li
Low-pressure catalytic membranes allow efficient rejection of particulates and simultaneously removing organics pollutant in water, but the accumulation of dissolved organic matters (DOM) on membrane surface, which cover the catalytic sites and cause membrane fouling, challenges their stable operation in practical wastewater treatment. Here we propose a ferric salt-based coagulation/co-catalytic membrane integrated system that can effectively mitigate the detrimental effects of DOM. Ferric salt (Fe 3+ ) was in the wastewater, serving both as DOM coagulant to lower the membrane fouling and as a co-catalyst with the membrane-embedded MoS 2 nanosheets for perxymonosulfate (PMS) activation and pollutant degradation. The membrane functionalized with 2H-phased MoS 2 nanosheets showed improved hydrophilicity and fouling resistance relative to the blank polysulfone membrane. Attributed to the DOM coagulation and co-catalytic generation of surface-bound radicals for decontamination at membrane surface, the catalytic membrane/PMS/ Fe 3+ system showed much less membrane fouling and 2.6 times higher pollutant degradation rate in wastewater treatment than the catalytic membrane alone. Our work imply a great potential of coagulation/co-catalytic membrane integrated system for water purification application.
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TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
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2023
·
IF 4.5
Hao-tian ZHU,Hai-rui GUO,Qi-jing ZHENG,Chun-yan GUAN,Li-ping ZHU,Hai-bin LI,Jin-yu YANG
Ho 3+ and Yb 3+ co-doped La 7 P 3 O 18 up-conversion phosphors were prepared by a high-temperature solid-state process. XRD results reveal that the samples are mixtures of monoclinic structure La 7 P 3 O 18 crystals with P 21/ n space group and minor LaPO 4 crystals. UV—Vis DRS results indicate that La 7 P 3 O 18 crystal is an indirect semiconductor with an optical band gap of 4.10 eV. After 980 nm laser excitation, the Ho 3+ and Yb 3+ co-doped La 7 P 3 O 18 phosphors show the characteristic blue (486 nm), green (550 nm), and red (661 nm) luminescence peaks of Ho 3+ ions. The peak at 661 nm dominates in the up-conversion luminescence spectra of samples. Meanwhile, with the increase of Ho 3+ and Yb 3+ doping content, the up-conversion luminescence intensity increases first and then decreases. By increasing the doping contents of Ho 3+ and Yb 3+ up to 1 at.% and 10 at.%, respectively, concentration quenching may appear by an electric quadrupole– electric quadrupole interaction process. The pumping power dependence of luminescence indicates that the green and red emissions of samples are excited by a two-photon absorption process. The color coordinates of Ho 3+ and Yb 3+ co-doped La 7 P 3 O 18 crystals locate in the orange—red region.
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MICROPOROUS AND MESOPOROUS MATERIALS
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2023
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IF 5.2
Hongmei Yang,Menglu Xu,Lili Zhang,Weiwei Fang,E. Liu,Huaxin Zhang
A benzotrizole-based hyper-crosslinked polymer (HCP) was employed to load cobalt and prepare a novel metal-containing nitrogen-doped carbon catalyst for the selective hydrogenation of quinoline . The high porosity, large surface area and nitrogen-containing monomer of HCP made a positive contribution to metal loading. Owing to the excellent thermostability of HCP, the original porous texture of HCP was partially reserved during pyrolysis , which resulted in highly dispersive Co species in the N-doped carbon material. The remaining mesopores in Co@CN catalyst during thermal decomposition provided available diffusion channels for substrates, which facilitated their full contact with catalytic active sites and their effective conversion. The prepared Co@CN catalyst achieved a conversion rate of 100% and a selectivity of 100% in the hydrogenation of quinoline into 1, 2, 3, 4-tetra-hydroquinoline in water at 100 °C under 3 MPa H 2 . The as-synthesized catalyst had good reuse performance, exhibiting >95% conversion rate and >99% selectivity even after 12 cycles. Moreover, the catalyst could also be applied to the selective hydrogenation of a serial of quinoline derivatives. The study provided a useful strategy for constructing metal-doped carbon materials which might be applicable for other metals and other reactions.
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