SOLAR ENERGY MATERIALS AND SOLAR CELLS
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2024
·
IF 6.3
Xian Qin,Hui Liu,Jinjia Wei
The reversible reaction of calcium oxide (CaO) carbonation/calcination is a viable energy storage technology that can be used in concentrated solar power plants. However, the use of pure CaO material is limited by the low Tammann temperature of CaCO 3 , which leads to incomplete reaction in the carbonation/calcination cycle process and particle agglomeration and sintering after multiple cycles. These factors affect CO 2 mass transfer and react with deep CaO, resulting in decreased energy storage performance with the increase of number of cycles, which seriously hinders the practical application of the material. In this study, MnCl 2 was employed as a stabilizer to overcome the poor cyclic stability of CaO by using a simple wet impregnation method. Mn 2+ was introduced into the CaO precursor through impregnation and calcination processes, resulting in the formation of Ca 2 MnO 4 . This compound acted as a skeleton to support the CaO structure. Additionally, some of the Cl − reacted with Ca 2+ to produce CaCl 2 , which melted during carbonation and facilitated CO 2 mass transfer. It is worth noting that when the concentration of MnCl 2 is 0.05M, the loaded samples exhibit a high energy storage density of 1710 kJ/kg. Moreover, after 50 cycles of carbonation/calcination, the performance only decreases by 5 %, which is 3.7 times that of the CaO materials of the same period. The proposed CA-MnCl 2 -0.05 material could be applied in concentrated solar power plants for energy storage.
研究领域:
材料科学
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可再生能源
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 9
·2037
·
IF 4.2
Zhaohui Liu,Min Mao,Ruixue Yangcheng,Shuang Lv
Small-pore zeolites catalyze the methanol-to-olefins (MTO) reaction via a dual-cycle mechanism, encompassing both olefin- and aromatic-based cycles. Zeolite topology is crucial in determining both the catalytic pathway and the product selectivity of the MTO reaction. Herein, we investigate the mechanistic influence of MCM-35 zeolite on the MTO process. The structural properties of the as-synthesized MCM-35 catalyst, including its confined cages (6.19 Å), were characterized, confirming them as the catalytic centers. Then, the MTO reactions were systematically performed and investigated over a MCM-35 catalyst. Feeding pure methanol to the reactor yielded minimal MTO activity despite the formation of some aromatic species within the zeolite. The results suggest that the aromatic-based cycle is entirely suppressed in MCM-35, preventing the simultaneous occurrence of the olefin-based cycle. However, cofeeding a small amount of propene in methanol can obviously enhance the methanol conversion under the same studied reaction conditions. Thus, the exclusive operation of the olefin-based cycle in the MTO reaction, independent of the aromatic-based cycle, was demonstrated in MCM-35 zeolite.
研究领域:
催化化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
ENERGY & FUELS
·
2021
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IF 3.605
Hailong Li,Yingjie Chen,Lijian Leng,Yingchao Hu
Reliable energy storage technology is a prerequisite for the efficient utilization of solar energy, among which thermochemical energy storage based on calcium looping emerges as a promising candidate. In this work, antisintering Y2O3 was doped into CaO to prepare a novel composite for energy storage. Benefiting from the homodispersity of Y2O3 in active CaO, which was proved by both scanning electron microscopy and transmission electron microscopy analyses, the novel composite exhibited high energy storage density and excellent cyclic stability. 35 wt % is considered as the optimal addition amount of Y2O3 because of its highest energy storage density of 1986 kJ/kg after 10 cycles. CaY35 not only showed outstanding extended cyclic performance but also maintained a satisfactory energy storage density of about 1400 kJ/kg under harsh calcination conditions due to its increased Brunauer–Emmett–Teller specific surface area and enriched porosity through the N2 adsorption analysis. In addition, the extrusion-spheronization method was employed to granulate CaY35 powders into spherical pellets. The extrusion force during the granulation process led to the destruction of the sorbent structure to some extent, resulting in a slight decline in pellet performance. However, the granulation endowed the pellets with excellent mechanical strengths and they lost only 4.28 wt % of their initial mass after 7000 rotations in a fragility tester, which was of great significance for their cyclic practical applications.
研究领域:
能源材料科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
DEEP-SEA RESEARCH PART I-OCEANOGRAPHIC RESEARCH PAPERS
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2022
·
IF 3.101
Jiakang Li,Yu Zhang,Yongxin Lv,Xiang Xiao
Hadal trenches extend below 6000 m water depth. The high hydrostatic pressures occurring in the trenches (>60 MPa) create unfriendly for life conditions. Here, we isolated 55 fungal strains from hadal (>6000 m) and non-hadal (∼3500 m and 5500 m) sediments from the Mariana Trench using different pressure incubation experiments. The fungal strains that were successfully isolated, were assigned to Ascomycota (14 genera/25 species) and Basidiomycota taxa (5 genera/5 species). Among them, 41 fungal strains (38 isolates from Ascomycota and 3 isolates from Basidiomycota) were able to grow at hydrostatic pressures of 20 MPa, while 3 of these strains maintained successful growth at 60 MPa, which resembles the hydrostatic pressure at 6000 m water depth. Whole-genome sequencing and physiological activity data from two fungal isolates ( Penicillium bialowiezense A30 and Cladosporium colombiae 601) growing at 20 MPa highlight the metabolic potential of fungal piezotolerants from the Mariana Trench in carbon (e.g., carbohydrate metabolism), nitrogen (e.g., assimilatory nitrate reduction) and sulfur (e.g., assimilatory sulfate reduction) cycling. Overall, our study demonstrates the existence of piezotolerant fungi from the Mariana Trench that can grow successfully under hydrostatic pressures of 20–60 MPa and highlights their potential ecological and metabolic functions in deep sea and hadal trench ecosystems.
研究领域:
微生物学
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基因组学
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海洋生物学
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环境科学
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产品关联
DOI
高影响因子
Science Advances
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2024
·Vol. 10
·期 2
·
IF 11.7
Yunhao Hu,Weifeng Yang,Wei Wei,Zhouquan Sun,Bo Wu,Kerui Li,Yaogang Li,Qinghong Zhang,Ru Xiao,Chengyi Hou,Hongzhi Wang
Collecting energy from the ubiquitous water cycle has emerged as a promising technology for power generation. Here, we have developed a sustainable moisture absorption-evaporation cycling fabric (Mac-fabric). On the basis of the cycling unidirectional moisture conduction in the fabric and charge separation induced by the negative charge channel, sustainable constant voltage power generation can be achieved. A single Mac-fabric can achieve a high power output of 0.144 W/m2 (5.76 × 102 W/m3) at 40% relative humidity (RH) and 20°C. By assembling 500 series and 300 parallel units of Mac-fabrics, a large-scale demo achieves 350 V of series voltage and 33.76 mA of parallel current at 25% RH and 20°C. Thousands of Mac-fabric units are sewn into a tent to directly power commercial electronic products such as mobile phones in outdoor environments. The lightweight (300 g/m2) and soft characteristics of the Mac-fabric make it ideal for large-area integration and energy collection in real circumstances.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2022
·
IF 7.305
X.K. Tian,T.X. Xu,J. Yan,S.C. Lin,C.Y. Zhao
The cyclic stability enhancement of the CaO/CaCO 3 thermochemical energy storage system is crucial for high-temperature thermal utilization of solar energy. In this study, we successfully enhance the long-term durability of calcium-looping composites by co-doping TiO 2 and MgCl 2 based on lattice energy and phase combination/separation mechanism. According to molecular dynamics simulations of metallic oxides, TiO 2 shows higher thermal stability and better doping effects in calcium-looping materials. Further experiments indicate that the phase combination mechanism acting on high-valance metallic oxides like TiO 2 can promote cyclic stability of calcium-looping materials. The calcium-based composite doped with 10 mol% TiO 2 prepared by wet-mixing method exhibits high energy storage performance in 15 cycles. MgCl 2 is also used as a dopant to improve cyclic stability of the calcium-based composite in long-term cycles further. The energy storage performance of the composite doped with 5 mol% TiO 2 and 5 mol% MgCl 2 is superior to single-doped composites. The average effective conversion ratio is 0.54 in 100 cycles and the energy storage densities are close to 1000 kJ/kg in most of the calcination/carbonation cycles. Microstructure characterizations indicate that the co-doped composite has abundant micropores and smaller particles with the more uniform size distribution. The modification mechanism at atomic scale will serve as guidelines for dopant selection preliminarily, and the novel TiO 2 /MgCl 2 co-doped calcium-based composite is promising for long-term industrial applications, such as high-temperature thermal utilization of solar energy.
研究领域:
能源材料科学
·
太阳能利用技术
✓ 已验证
DOI
高影响因子
Nature Communications
·
2023
·Vol. 14
·期 1
·1-12
·
IF 16.6
Tian Jinzhong,Deng Wangshuying,Zhang Ziwen,Xu Jiaqi,Yang Guiling,Zhao Guoping,Yang Sheng,Jiang Weihong,Gu Yang
Formic acid (FA) has emerged as a promising one-carbon feedstock for biorefinery. However, developing efficient microbial hosts for economically competitive FA utilization remains a grand challenge. Here, we discover that the bacterium Vibrio natriegens has exceptional FA tolerance and metabolic capacity natively. This bacterium is remodeled by rewiring the serine cycle and the TCA cycle, resulting in a non-native closed loop (S-TCA) which as a powerful metabolic sink, in combination with laboratory evolution, enables rapid emergence of synthetic strains with significantly improved FA-utilizing ability. Further introduction of a foreign indigoidine-forming pathway into the synthetic V. natriegens strain leads to the production of 29.0 g · L −1 indigoidine and consumption of 165.3 g · L −1 formate within 72 h, achieving a formate consumption rate of 2.3 g · L −1 · h −1 . This work provides an important microbial chassis as well as design rules to develop industrially viable microorganisms for FA biorefinery.
研究领域:
生物技术
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代谢工程
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微生物学
✓ 已验证
DOI
PubMed
高影响因子
Green Energy & Environment
·
2023
·
IF 13.3
Changjian Yuan,Xianglei Liu,Xinrui Wang,Chao Song,Hangbin Zheng,Cheng Tian,Ke Gao,Nan Sun,Zhixing Jiang,Yimin Xuan,Yulong Ding
Solar thermochemical energy storage based on calcium looping (CaL) process is a promising technology for next-generation concentrated solar power (CSP) systems. However, conventional calcium carbonate (CaCO 3 ) pellets suffer from slow reaction kinetics, poor stability, and low solar absorptance. Here, we successfully realized high power density and highly stable solar thermochemical energy storage/release by synergistically accelerating energy storage/release via binary sulfate and promoting cycle stability, mechanical strength, and solar absorptance via Al–Mn–Fe oxides. The energy storage density of proposed CaCO 3 pellets is still as high as 1455 kJ kg −1 with only a slight decay rate of 4.91% over 100 cycles, which is higher than that of state-of-the-art pellets in the literature, in stark contrast to 69.9% of pure CaCO 3 pellets over 35 cycles. Compared with pure CaCO 3 , the energy storage power density or decomposition rate is improved by 120% due to lower activation energy and promotion of Ca 2+ diffusion by binary sulfate. The energy release or carbonation rate rises by 10% because of high O 2− transport ability of molten binary sulfate. Benefiting from fast energy storage/release rate and high solar absorptance, thermochemical energy storage efficiency is enhanced by more than 50% under direct solar irradiation. This work paves the way for application of direct solar thermochemical energy storage techniques via achieving fast energy storage/release rate, high energy density, good cyclic stability, and high solar absorptance simultaneously.
研究领域:
材料科学
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可再生能源
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太阳能技术
✓ 已验证
产品关联
DOI
高影响因子
CHEMOSPHERE
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2022
·
IF 8.943
Cheng Peng,Kailin Gong,Qiannan Li,Weiyu Liang,Huihui Song,Fang Liu,Jie Yang,Wei Zhang
Magnesium-aluminum modified biochar (MABs) has an outstanding effect on the simultaneous immobilization of arsenic (As), lead (Pb), and cadmium (Cd) in soil, but the stability of remediation effect of MAB under various natural conditions is still unknown. In this study, we investigated the effects of organic acids, dry-wet cycles (DW), freeze-thaw cycles (FT), and rainfall (pH 4, 7, and 8) on the immobilization of As, Pb, and Cd by MAB. The results showed that oxalic acid decreased the immobilization efficiencies of As, Pb, and Cd by 15.5%–38.5%; meanwhile, humic acid reduced the immobilization efficiency of Pb by 89.7%, but elevated that of Cd by 19.5%. The immobilization mechanisms of MAB-5 on three metals were mainly involved in ion exchange and surface-complexation. Compared with the 7th round, the immobilization efficiencies of As, Pb, and Cd by MAB in the 28th round was decreased by 17%–28% in DW, but was increased by 11%–18% in FT. In addition, MAB was transformed into hydrotalcite after FT and DW. After experiencing simulated rainfall, MAB caused more As, Pb, and Cd to be retained in the upper soil layer, and the immobilization effect of MBA was more significant under the stimulated rainfall with higher pH. The study provides a more theoretical basis for the application of MAB in the actual site remediation.
研究领域:
环境科学
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土壤修复
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污染控制
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
·
2024
·
IF 0
Zhang Zekun,Zhao Le,Yang Jie,Pang Jiayin,Lambers Hans,He Honghua
Antibiotic contamination in soil has become a major concern worldwide. At present, it is not clear how two co-existed antibiotics with environmentally relevant concentrations would affect soil bacterial community structure, the abundances of antibiotic resistance genes (ARGs) and functional genes, and whether the effects of antibiotics would differ between rhizosphere and bulk soil. We conducted a greenhouse pot experiment to grow maize in a loess soil treated with oxytetracycline (OTC) or sulfadiazine (SDZ) or both at an environmentally relevant concentration (1 mg kg −1 ) to investigate the effects of OTC and SDZ on the rhizosphere and bulk soil bacterial communities, abundances of ARGs and carbon (C)-, nitrogen (N)-, and phosphorus (P)-cycling functional genes, and on plant growth and plant N and P nutrition. The results show that the effects of environmentally relevant concentrations of OTC and SDZ on bacterial communities and abundances of ARGs and functional genes differ between maize rhizosphere and bulk soil. The effects of two antibiotics resulted in a higher absolute abundances of accA , tet(34) , tnpA-04 , and sul2 in the rhizosphere soil than in the bulk soil and different bacterial community compositions and biomarkers in the rhizosphere soil and the bulk soil. However, OTC had a stronger inhibitory effect on the abundances of a few functional genes in the bulk soil than SDZ did, and their combination had no synergistic effect on plant growth, ARGs, and functional genes. The role of co-existed OTC and SDZ decreased shoot height and increased root N concentration. The results demonstrate that environmentally relevant concentrations of antibiotics shift soil microbial community structure, increase the abundances of ARGs, and reduce the abundances of functional genes. Furthermore, soil contamination with antibiotics can diminish agricultural production via phytotoxic effects on crops, and combined effects of antibiotics on plant growth and nutrient uptake should be considered.
研究领域:
环境科学
·
土壤微生物学
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植物科学
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生态学
·
农业
✓ 已验证
产品关联
DOI
PubMed
JOURNAL OF HAZARDOUS MATERIALS
·
2025
·
IF 11.3
Zhaojiang Liu,Jiayang Hu,Yanjun Li,Yong Yu
Herbicide acetochlor (ACT) is widely used in agricultural production, but it remains unclear whether microplastics (MPs) from agricultural films exacerbate its harmful effects on soil health. Here, a microcosm cultivation experiment was conducted to investigate the impacts of PE (Polyethylene)-MPs and PBAT (polybutylene adipate terephthalate)-MPs with ACT (MPs/ACT) on soil health. Results showed that MPs/ACT treatment caused soil acidification, depletion of organic carbon and ammonium, altered enzyme activities, and influenced greenhouse gas emissions compared to ACT alone. MPs/ACT co-exposure also restructured microbial communities, reducing alpha diversity, increasing co-occurrence network complexity, enriching putative contaminant degraders, and enhancing the relative abundance of key nitrogen-cycling genes, enzymes, and carbon-cycling genes. Notably, PBAT/ACT stimulated nitrification-denitrification processes more than PE/ACT, indicating polymer-specific effects on soil nutrient cycling. Overall, MPs/ACT decreased soil health by 8.89 % - 14.63 %, greater than 8.39 % caused by ACT alone. These results demonstrate that MPs exacerbate the toxic effects of ACT on soil health. Mitigation strategies, such as reducing MP inputs, optimizing herbicide use, and incorporating biochar or microbial amendments, may help to restore soil health and maintain ecosystem stability. This study provides critical insights into the compounded impacts of MPs and herbicides on soil ecosystems.
研究领域:
环境科学
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土壤生物学
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农业生态学
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环境污染与修复
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微生物生态学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SYNTHETIC METALS
·
2014
·
IF 2.222
Youxiong Zhang,Mingliang Xin,Weihong Lin,Zhiwei Yu,Jun Peng,Kai Xu,Mingcai Chen
The synthesis by in situ oxidative polymerization of poly(5-methoxyl-2-(3-sulfopropoxyl)-1,4-phenylenevinylene) (MPS-PPV)/poly(3,4-ethylenedioxythiophene) (PEDOT) composite particles with high surface area in aqueous dispersion of MPS-PPV was reported. The nanostructure and growth mechanism of MPS-PPV/PEDOT composite particles were investigated in detail by FE-SEM and TEM, as well as XRD. PEDOT appeared to have used the tangled-worm like structures of MPS-PPV assembled in the presence of FeCl 3 as a scaffold for polymerization, wrapping itself around the tangled worms like bark on a tree. Cyclic voltammetry (CV) was used to qualitatively characterize the pseudo-capacitance properties of MPS-PPV/PEDOT composite particles. Their mass-specific capacitance and cycling stability were calculated by cyclic voltammetry cycles at different potential scan rates. The results showed that the maximum mass specific capacitance for MPS-PPV/PEDOT composite particles increases with the increase of the weight ratio of MPS-PPV, which can be achieved as high as 102 F g −1 . Moreover, the materials exhibited high cycling stability and retained approximately 45% of their maximum total capacitance, which was higher than that of pure PEDOT (approximately 40%), as the scan rate approaches 25 mV s −1 . These results make the composite materials available in the field of electronic devices.
研究领域:
材料科学
·
电化学
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）