Nature Communications
·
2022
·Vol. 13
·期 1
·1-9
·
IF 17.694
Li Lianhui,Feng Sijia,Bai Yuanyuan,Yang Xianqing,Liu Mengyuan,Hao Mingming,Wang Shuqi,Wu Yue,Sun Fuqin,Liu Zheng,Zhang Ting
Restricted ambient temperature and slow heat replenishment in the phase transition of water molecules severely limit the performance of the evaporation-induced hydrovoltaic generators. Here we demonstrate a heat conduction effect enhanced hydrovoltaic power generator by integrating a flexible ionic thermoelectric gelatin material with a porous dual-size Al 2 O 3 hydrovoltaic generator. In the hybrid heat conduction effect enhanced hydrovoltaic power generator, the ionic thermoelectric gelatin material can effectively improve the heat conduction between hydrovoltaic generator and near environment, thus increasing the water evaporation rate to improve the output voltage. Synergistically, hydrovoltaic generator part with continuous water evaporation can induce a constant temperature difference for the thermoelectric generator. Moreover, the system can efficiently achieve solar-to-thermal conversion to raise the temperature difference, accompanied by a stable open circuit voltage of 6.4 V for the hydrovoltaic generator module, the highest value yet.
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高影响因子
CATALYSIS LETTERS
·
2022
·Vol. 152
·期 12
·3843-3852
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IF 2.936
Huang Xuehui,Yang Na,Li Xiaobo,Pan Hongyun,Song Xiaozhan,Chang Yu
La 0.8 Sr 0.2 MnO 3 (LSM) catalyst has been successfully prepared by solid phase method (G-LSM-T), sol–gel method (C-LSM-T) and molten salt method (S-LSM-T), using as-prepared MnCO 3 microspheres as templates, respectively. It was shown that the S-LSM-550 catalyst presented well-formed perovskite structures, large specific surface area (49.65m 2 /g) and promising catalytic activity in CO oxidation, which T 50 and T 90 for CO conversion over fresh S-LSM-550 were 145.14 °C and 170.73 °C. The S-LSM-550 calcined at 550 °C for 2 h exhibited excellent thermal stability and catalytic activity compared with the samples prepared by solid phase method and sol–gel method. Its superior catalytic performance could be greatly attributed to its stable microstructure, high surface Mn 4+ /Mn 3+ molar ratio and more available surface adsorbed oxygen species. Graphical Abstract
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Journal of Coatings Technology and Research
·
2022
·Vol. 19
·期 3
·977-988
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IF 2.339
Xu Xinmeng,Zhou Zhongqun,Qin Liangrong,Yu Caili,Zhang Faai
It is difficult to produce coatings that have good mechanical and self-healing properties. In this study, polyvinyl alcohol/polyurethane/polyurea (PVA/PU/PUA) microcapsules (MCs) loaded with isophorone diisocyanate (IPDI) as core materials were first prepared by interfacial polymerization in an oil-in-water emulsion using different PVA as an emulsifier. The MCs were then uniformly dispersed in the matrix. Optical microscopy and scanning electron microscopy revealed that the size of MCs decreased as alcoholysis and polymerization degree of PVA increased. Thermogravimetric analysis showed that the MCs prepared with the high polymerization or alcoholysis degree of PVA revealed outstanding thermal stability, and the initial decomposition temperature increased by approximately 100°C compared with IPDI. Furthermore, the self-healing performance of the two-component waterborne polyurethane (2K WPU) coating system containing MCs was investigated. The 2K WPU coatings with 9 wt% PVA/PU/PUA MCs exhibited excellent self-healing, mechanical properties, and corrosion resistance, and indicated a high potential for smart coating.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 30
·45623-45634
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IF 5.19
Liang Linqing,Wang Jiahong,Tong Xinhao,Zhang Shutong
The Fe 3 O 4 @nSiO 2 @mSiO 2 /NTA (FNMs-NTA) was prepared by grafting magnetic mesoporous microspheres with nitrilotriacetic acid (NTA) and applied as an adsorbent for the removal of Cr(III) from complex solutions. Some characterization techniques including Brunauer–Emmett–Teller (BET), Fourier transform infrared spectrometer (FT-IR), X-ray diffraction (XRD), small-angle X-ray diffraction (SAXS), vibrating sample magnetometer (VSM), and thermal gravimetric analysis (TGA) were used to characterize functional groups and pore structure of FNMs-NTA, which proved that NTA was successfully decorated onto the magnetic Fe 3 O 4 @nSiO 2 @mSiO 2 (FNMs) and FNMs-NTA featured a regular mesoporous structure. The batch adsorption of Cr(III) by FNMs-NTA exhibited high adsorption capacity (16.0 mg·g −1 at pH 3.0, and 25 °C). Adsorption data followed Freundlich isotherm and adsorption process was a spontaneous adsorption process. Moreover, the kinetics of adsorption were well explained by pseudo-second-order kinetic model. FNMs-NTA showed resistance to interfering inorganic cations (Na + , Ca 2+ ) and complexing agents (EDTA). Furthermore, FNMs-NTA exhibited remarkable regeneration performance and easy separation under external magnetic field. X-ray photoelectron spectroscopy (XPS) analysis showed the FNMs-NTA had excellent adsorption ability for Cr(III) because of the ion exchange and surface complexation.
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高影响因子
CELLULOSE
·
2022
·Vol. 29
·期 3
·1897-1909
·
IF 6.123
Li Miao,Yang Yutong,Yue Chengbin,Song Yongming,Manzo Maurizio,Huang Zhenhua,Cai Liping
Abstract Conductive hydrogel (CH) strain sensors have made significant progress in wearable electronic products in recent years. However, the use of aqueous solvents as the dispersion medium in CHs largely limits the scope of applications of CHs and impedes the combination of the mechanical properties and ionic conductivity, which is urgently desired to be addressed. Herein, a simple one-pot preparation of anti-freezing, anti-drying ionic CHs with high stretchability (up to 869%), toughness (6.60 MJ/m 3 ), and Young's modulus (0.56 MPa) was proposed. These CHs consist of polyvinyl alcohol, tannic acid, and sodium chloride dispersed in a solvent consisting of glycerol and cellulose nanofiber suspension. The thus-synthesized CHs exhibit good ionic conductivity (~ 0.86 S/m) and strain sensitivity (gauge factor of 8.54). The organohydrogel possesses a sensitive strain sensing capability and a wide-working temperature range (−50 °C to 60 °C), and good stability (30 d in room-temperature) to detect human movement, such as large (joint movement) and subtle movements (voice in the throat). These advantages allow organohydrogel sensors to show great potential for electronic skin, personal healthcare, and flexible wearable devices. Graphical abstract
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 19
·29117-29129
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IF 5.19
Huang Xinlei,Li Hongxian,Wang Ling,Tang Minghui,Lu Shengyong
The coal combustion produces a large amount of pollutants such as organic compounds pollutants (such as VOCs, SVOCs) and conventional pollutants (such as SO 2 , NOx) which need to be controlled in coal-fired plants. Currently, there have been mature emission control technologies for conventional pollutants in coal-combustion flue gas. The complicated conditions of flue gas will have great effects on the property of VOCs adsorbents. Thus, high-quality adsorbents with great adsorption properties and selectivity of VOCs are urgently needed. In this work, a biomass-derived hierarchical porous carbon (HPC-A) with high adsorption capacity (585 mg/g) and great selectivity of toluene was proposed. Analyses through the competitive adsorption tests between toluene and SO 2 indicated that the pore size distributions of adsorbents dominate the adsorption capacity and selectivity. The ultramicropores (< 0.7 nm) determine the SO 2 adsorption capacity and promote the SO 2 adsorption selectivity, while the micropores of 0.7 ~ 2 nm and mesopores are beneficial for toluene adsorption. Intriguingly, the SO 2 molecules can promote the toluene adsorption kinetics on hierarchical porous carbons through occupying ultramicropores when competitive adsorption. Besides, we indicated the mechanism of adsorption capacity, selectivity, and kinetics of toluene and SO 2 , and great reusability of HPC-A was found through toluene cyclic adsorption tests. The HPC-A could be a potential adsorbent for VOCs removal from coal-combustion flue gas.
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高影响因子
Journal of Inorganic and Organometallic Polymers and Materials
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2022
·Vol. 32
·期 3
·840-853
·
IF 3.518
Cui Can,Xie Ya-Dian,Niu Jiao-Jiao,Hu Hai-Liang,Lin Sen
In this work, three different generations of Poly(amidoamine) dendrimers (PAMAM) decorated on magnetic Fe 3 O 4 composites (Fe 3 O 4 @SiO 2 –G1, Fe 3 O 4 @SiO 2 –G3, Fe 3 O 4 @SiO 2 –G5) were fabricated and characterized by FTIR, XRD, TEM, TGA, VSM and XPS. The obtained composites were used for Cr(VI) removal. Batch adsorption studies showed that the adsorption reached equilibrium within 60 min, and the optimal pH was 3.0. The result of adsorption kinetics was simulated by the pseudo-second-order model. The adsorption equilibrium isotherm was well fitted with the Langmuir adsorption model. Furthermore, thermodynamics calculations revealed that the adsorption process was endothermic and spontaneous. Importantly, adsorption capacity of Cr(VI) obeyed the sequence of Fe 3 O 4 @SiO 2 –G1 < Fe 3 O 4 @SiO 2 –G5 < Fe 3 O 4 @SiO 2 –G3, 3 generation of PAMAM (G3) was the optimal for adsorption capacity of Cr(VI). The maximum theoretical Cr(VI) adsorption capacity ( q m ) of Fe 3 O 4 @SiO 2 –G3 was 334.45 mg/g, and removal ration remained above 89.5% after five cycles of adsorption–desorption. Thus, Fe 3 O 4 @SiO 2 –G3 is predicted to be an efficient adsorbent for the adsorption of Cr(VI) from aqueous solution, and the obtained results can help in the generation optimization during fabrication of dendrimer modified adsorbents.
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Nature Catalysis
·
2022
·Vol. 5
·期 1
·45-54
·
IF 40.706
Qi Guodong,Davies Thomas E.,Nasrallah Ali,Sainna Mala A.,Howe Alexander G. R.,Lewis Richard J.,Quesne Matthew,Catlow C. Richard A.,Willock David J.,He Qian,Bethell Donald,Howard Mark J.,Murrer Barry A.,Harrison Brian,Kiely Christopher J.,Zhao Xingling,Deng Feng,Xu Jun,Hutchings Graham J.
The oxidation of methane, the main component of natural gas, to selectively form oxygenated chemical feedstocks using molecular oxygen has been a long-standing grand challenge in catalysis. Here, using gold nanoparticles supported on the zeolite ZSM-5, we introduce a method to oxidize methane to methanol and acetic acid in water at temperatures between 120 and 240 °C using molecular oxygen in the absence of any added coreductant. Electron microscopy reveals that the catalyst does not contain gold atoms or clusters, but rather gold nanoparticles are the active component, while a mechanism involving surface adsorbed species is proposed in which methanol and acetic acid are formed via parallel pathways.
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ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2022
·Vol. 414
·期 5
·1829-1839
·
IF 4.478
Yi Jinquan,Chen Xiaoping,Lin Jianwei,Song Kai,Han Zhizhong,Chen Jinghua
In this work, we designed new dual-mode “turn-on” electrochemical (EC) and photoelectrochemical (PEC) sensors for the detection of dopamine (DA) based on 0D/2D/2D CuInS 2 /ZnS quantum dot (QD)–black phosphorous nanosheet (BPNS)–TiO 2 nanosheet (TiO 2 NS) nanocomposites. QDs can not only improve the photocurrent of the developed PEC sensors, but also provide the electrochemical signal in the EC detection. BPNSs as p-type semiconductor with high conductive properties work as electron acceptors and are utilized to improve the sensitivity of the DA PEC and EC sensors. Under irradiation of visible light or the applied voltage, DA is both excited and releases electrons, realizing “turn-on” detection. The PEC sensors have a linear range of 0.1–100 μM with a lower detection limit of 0.028 μM. For the EC detection, BPNSs can accelerate electron transfer which attribute to its excellent conductivity. In the range of 1–200 μM, the working curve of DA detection by the EC sensors was established and the detection limit is 0.88 μM. Comparing the two methods, the PEC sensors have a lower detection limit, and the EC sensors have a wider monitoring range. The dual-mode sensors of EC and PEC pave an effective way for the detection in biological and medical fields. Graphical abstract
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高影响因子
CHROMATOGRAPHIA
·
2022
·Vol. 85
·期 3
·221-231
·
IF 2.213
Sun Zhiping,He Lingli,Yang Qingqing,Zhang Haizhi,Xu Weiren,Qin Xinguang,Liu Gang,Hu Zhongze,Zhang Luyong,Liu Changxiao
The influence of genetic polymorphism of metabolic enzymes on drug–drug interactions (DDI) should be thoroughly investigated owing to its remarkable effect on therapeutic treatments that are futile. Here, different from earlier articles focused on various CYP subfamilies and their isoforms, the effect of genetic polymorphs of a particular isoform, CYP2C9, was comprehensively studied. Using diclofenac as probe substrate, the influence of three CYP2C9 variants (CYP2C9*1, *2 and *3) on DDI was conducted from the measurement of inhibitory ability of six drugs towards three variants. A modified LC–MS/MS method according to former report was constructed for the determination of 4ʹ-hydroxydiclofenac in CYP2C9 enzyme incubation system and validated for accuracy, precision, linearity range within the acceptance criteria for regulatory guidelines. After selecting appropriate incubation time and enzyme concentration, the kinetic parameters of three CYP2C9 variants towards diclofenac were examined and half inhibitory concentrations (IC 50 ) of six drugs towards three CYP2C9 variants were determined. IC 50 of paroxetine and losartan towards CYP2C9*2 were almost threefold higher and 2.5-fold lower than that towards CYP2C9*1, respectively. IC 50 of glibenclamide towards CYP2C9*3 was twofold more than that towards CYP2C9*1. Our results could offer effective guidelines for co-administration of these six drugs with various CYP2C9 substrates in individuals carrying variant CYP2C9 alleles, also broaden the application area of LC–MS/MS.
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ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 32
·48638-48647
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IF 5.19
Li Qian,Tang Zeqin,Zhang Jiahui,Hu Jingtao,Chen Jianmeng,Chen Dongzhi
Simultaneous biodegradation of malodorous 1-propanethiol (PT) and dimethyl sulfide (DMS) by Pseudomonas putida S-1 and Alcaligenes sp. SY1 was investigated and the interactions implicated were explored. Results showed that PT was completely degraded in 33 h, while a lag of 10 h was observed for DMS degradation alone, and the lag was even extended to 81 h in the binary mixture. Mechanism analysis found that the lag was mainly attributed to the exposure of DMS degrader ( Alcaligenes sp. SY1), rather than PT metabolites and PT degrader. The exposure time and PT concentration also influenced the lag duration much. Citric acid could effectively reduce the lag. Pseudo-first-order model was proved suitable for the description of PT degradation, revealing that PT degradation could be enhanced in presence of DMS with a concentration of < 50 mg L −1 . A modified Gompertz model, incorporated the lag phase, was developed for the description of DMS degradation in the mixture, revealing that DMS degradation depended on the initial PT concentration, and when the lag was not considered, PT with low-concentration could promote DMS biodegradation, while a higher concentration (> 20 mg L −1 ) cast negative effect.
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高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2022
·Vol. 29
·期 25
·37266-37276
·
IF 5.19
Zhang Li,Lan Shuang,Dou Quanhao,Hao Shiwei,Wang Yueping,Peng Yongzhen
The zero-valent iron-anaerobic ammonium oxidation (ZVI-anammox) system has received widespread attention due to its excellent nitrogen removal performance and user-friendly operation. However, its disadvantages include a short service life, high ZVI consumption, and poor system stability. The use of ultrasound as a physical method is increasing in various water treatment processes. In this study, a series of batch tests were conducted to obtain the best ultrasonic parameter and explore the comprehensive effects of ultrasound on a ZVI-anammox system. The highest specific anammox activity of the ZVI-anammox system was found to be 2.88 mg total nitrogen/g of volatile suspended solids/h after ultrasonic treatment (0.2 w/mL, 5 min), which was 37.85% higher than a control group. Additionally, the service life of ZVI extended by 28.57% and the total nitrogen removal efficiency changed from 58.03–72.08 to 63.92–78.33% under ultrasonic irradiation. These phenomena were related to the mechanical force and cavitation of ultrasonic waves. Judging from the characteristics of sludge and ZVI, ultrasound can promote anammox sludge granulation, ease ZVI passivation, and enhance the stability of the entire system. This paper also briefly discusses the impact mechanisms of ultrasound on the ZVI-anammox system. In brief, ultrasound destroys the surface structure of ZVI and thus provides numerous attachment points for microorganisms that improve the performance of the entire system. The proposed ultrasound combined with ZVI is a novel method that has potential for use in large-scale engineering applications in actual sewage treatment after comprehensive analysis.
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高影响因子
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