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Simultaneous sorption of aqueous phenanthrene and phosphate onto bentonites modified with AlCl3 and CTMAB

ZHU Runliang, ZHU Lizhong, ZHU Jianxi

《环境科学与工程前沿（英文）》 2007年 第1卷 第1期   页码 79-82 doi: 10.1007/s11783-007-0015-3

摘要： The purpose of this work is to synthesize a new type of bentonite sorbent that can simultaneously remove both organic compounds and phosphate from water. Inorganic-organic bentonites (Al-CTMAB-Bent) were synthesized by modifying bentonites with both AlCl3 and cetyltrimethyl ammonium bromide (CTMAB). Simultaneous sorption of aqueous phenanthrene and phosphate onto Al-CTMAB-Bent was examined. Removal rates of phenanthrene and phosphate from water reached 96.3% and 90.2%, respectively, at their respective initial concentrations of 1 mg/L and 5 mg/L and the added amount of Al-CTMAB-Bent was 1.25 g/L. The residual turbidity of the Al-CTMAB-Bent suspension decreased 81.4% compared to that of organobentonite suspension after a 1 h settling time. Thus, inorganic-organic bentonite can be used to treat wastewater containing both organic pollutants and phosphate.

关键词： phenanthrene     settling     respective     residual turbidity     Inorganic-organic    

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Organic and inorganic phosphorus uptake by bacteria in a plug-flow microcosm

Jinbo ZHAO, Xuehua LIU

《环境科学与工程前沿（英文）》 2013年 第7卷 第2期   页码 173-184 doi: 10.1007/s11783-013-0494-3

摘要： Phosphorus (P) is a vital nutrient for sustaining natural water productivity. Both particulate and dissolved forms of organic and inorganic P are potentially important sources of bioavailable P for primary and secondary producers. A microcosm system to imitate the bacterial community in Plym river sediment and pore water is described and bacterial uptake rates for inorganic and organic phosphorus are presented in this paper. The aim of this study was to investigate the uptake of two organic phosphorus compounds (phytic acid and D-glucose-6-phosphate) by freshwater bacteria. The bioreactors comprise glass columns packed with two types of small glass beads on which bacterial biofilm can develop. The glass beads with different porosity were introduced to simulate River SPM. The selected P compounds spiked into the inflow of the microcosm, and measured the step change of P concentration in the outflow to investigate the behavior of bacterial uptake of nutrients. The results showed that organic phosphorus was converted into inorganic phosphorus but the conversion rate depended on the type of phosphorus species. One experiment suggested that phytic acid (refractory) could displace phosphate from the biofilm surface; the other experiment showed that D-glucose-6-phosphate (labile) could be hydrolysed and utilized easily by the bacteria. The results also suggested that bacteria might break down the C-P bonds to utilize the carbon. Further experiments should investigate the effect of varying the C:N:P ratio in the microcosm system to determine which nutrient limits bacteria uptake.

关键词： organic phosphorus     bacteria     uptake    

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Immobilization of laccase on organic–inorganic nanocomposites and its application in the removal of phenolic

《化学科学与工程前沿（英文）》 2023年 第17卷 第7期   页码 867-879 doi: 10.1007/s11705-022-2277-5

摘要： Polydopamine-functionalized nanosilica was synthesized using an inexpensive and easily obtainable raw material, mild reaction conditions, and simple operation. Subsequently, a flexible spacer arm was introduced by using dialdehyde starch as a cross-linking agent to bind with laccase. A high loading amount (77.8 mg∙g‒1) and activity retention (75.5%) could be achieved under the optimum immobilization conditions. Thermodynamic parameters showed that the immobilized laccase had a lower thermal deactivation rate constant and longer half-life. The enhancement of thermodynamic parameters indicated that the immobilized laccase had better thermal stability than free laccase. The residual activity of immobilized laccase remained at about 50.0% after 30 days, which was 4.0 times that of free laccase. Immobilized laccase demonstrated excellent removal of phenolic pollutants (2,4-dichlorophenol, bisphenol A, phenol, and 4-chlorophenol) and perfect reusability with 70% removal efficiency retention for 2,4-dichlorophenol after seven cycles. These results suggested that immobilized laccase possessed great reusability, improved thermal stability, and excellent storage stability. Organic–inorganic nanomaterials have a good application prospect for laccase immobilization, and the immobilized laccase of this work may provide a practical application for the removal of phenolic pollutants.

关键词： polydopamine     pollutant removal     thermodynamic     phenolic pollutants     immobilized laccase    

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Thermal transport in organic/inorganic composites

Bin LIU, Lan DONG, Qing XI, Xiangfan XU, Jun ZHOU, Baowen LI

《能源前沿（英文）》 2018年 第12卷 第1期   页码 72-86 doi: 10.1007/s11708-018-0526-6

摘要： Composite materials, which consist of organic and inorganic components, are widely used in various fields because of their excellent mechanical properties, resistance to corrosion, low-cost fabrication, etc. Thermal properties of organic/inorganic composites play a crucial role in some applications such as thermal interface materials for micro-electronic packaging, nano-porous materials for sensor development, thermal insulators for aerospace, and high-performance thermoelectric materials for power generation and refrigeration. In the past few years, many studies have been conducted to reveal the physical mechanism of thermal transport in organic/inorganic composite materials in order to stimulate their practical applications. In this paper, the theoretical and experimental progresses in this field are reviewed. Besides, main factors affecting the thermal conductivity of organic/inorganic composites are discussed, including the intrinsic properties of organic matrix and inorganic fillers, topological structure of composites, loading volume fraction, and the interfacial thermal resistance between fillers and organic matrix.

关键词： thermal conductivity     organic/inorganic composites     effective medium theory     thermal percolation theory     interfacial thermal resistance    

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Flame-retardant properties of

Kumar Sai SMARAN, Rajashekar BADAM, Raman VEDARAJAN, Noriyoshi MATSUMI

《能源前沿（英文）》 2019年 第13卷 第1期   页码 163-171 doi: 10.1007/s11708-018-0554-2

摘要： This paper focuses on the superiority of organic-inorganic hybrid ion-gel electrolytes for lithium-ion batteries (LiBs) over commercial electrolytes, such as 1 M LiPF in 1:1 ethylene carbonate (EC): dimethyl carbonate (DMC) {1 M LiPF -EC: DMC}, in terms of their flame susceptibility. These ion-gel electrolytes possess ionic liquid monomers, which are confined within the borosilicate or silicate matrices that are ideal for non-flammability. Naked flame tests confirm that the organic-inorganic hybrid electrolytes are less susceptible to flames, and these electrolytes do not suffer from a major loss in terms of weight. In addition, the hybrids are self-extinguishable. Therefore, these hybrids are only oxidized when subjected to a flame unlike other commercial electrolytes used in lithium-ion batteries. Supplementary analyses using differential scanning calorimetric studies reveal that the hybrids are glassy until the temperature reaches more than 100°C. The current results are consistent with previously published data on the organic-inorganic hybrids.

关键词： inorganic polymeric borosilicate network     organic-inorganic hybrids     self-extinguishability     nonflammability     lithium batteries     flame-retardants    

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含高浓度无机颗粒的有机废液分离及回用技术 Article

汪华林, 付鹏波, 李剑平, 黄渊, 赵颖, 姜来, 方向晨, 杨涛, 黄朝晖, 黄诚

《工程（英文）》 2018年 第4卷 第3期   页码 406-415 doi: 10.1016/j.eng.2018.05.014

摘要：

有机废液的无害化、资源化处理是环境工程的前沿之一，随着化学品需求不断增加，石油、煤和天然气转化中排放的含高浓度无机污染物的有机废液问题更趋严重。本文通过同步高速摄像技术发现了三维旋转湍流场中颗粒物高速自转和翻转现象，自转速度高达2000~6000 rad·s-1，利用这一现象发明了颗粒物孔隙中有机物旋流自转脱除方法，开发了废液中有机污染物旋流自转回收、无机颗粒物气流加速度分级回用的工艺流程，并成功应用于中国石化第一套自主研发的沸腾床渣油加氢工程示范装置中。该技术与美国T-STAR含废催化剂的有机废液固定床气提技术相比，同温度下催化剂颗粒脱液效率最高可提高44.9个百分点，实现95%脱液效率的处理时间从1956.5 s降低到8.4 s，并实现了外排催化剂颗粒按活性分级进行回用。提出了200万吨/年沸腾床渣油加氢装置的外排有机废液控制及无机颗粒回收利用技术方案，预期可回收柴油3100吨/年，高活性催化剂颗粒647吨/年，降低装置新鲜催化剂消耗量518吨/年，直接经济效益3728万元/年，具有显著的经济、社会和环境效益。

关键词： 有机废液     无机颗粒     旋流脱液     颗粒自转     气流加速度分选    

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Formation of secondary inorganic aerosol in a frigid urban atmosphere

《环境科学与工程前沿（英文）》 2022年 第16卷 第2期 doi: 10.1007/s11783-021-1452-0

摘要：

•Harbin showed relatively high threshold RH (80%) for apparent increase of SOR.

关键词： Haze     Sulfate     Nitrate     Heterogeneous chemistry     Biomass burning     Northeast China    

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Spectrokinetics study of probable effects of diverse inorganic ions on bleaching of dye

Rafia AZMAT, Masooda QADRI, Fahim UDDIN

《化学科学与工程前沿（英文）》 2011年 第5卷 第1期   页码 131-138 doi: 10.1007/s11705-010-0556-z

摘要： Toluidine blue (TB) is an important anticoagulant metachromasia molecule showing a pronounced variation in the visible spectrum due to the aggregation phenomenon and electrostatic interaction with the charged synthetic and biologic polymers. The current study describes the interactive role of diverse inorganic material ions on the bleaching of toluidine blue (tolonium chloride) (TB ) with urea in acidic and basic media using the spectrophotometric technique. The spectra of TB and urea with different cations and anions were monitored and their characteristic features are presented here. The negative effect of added cations on reduction may be the result of altered electron pathways which led to suppression of the reduction/bleaching of TB, while a slight decrease in dye reduction by added anions may be due to the scavenging of the OH* radical. It has been observed in the case of Co that in addition to the electron-transfer reaction, other processes like layer and precipitate formation also appear to be taking place. The dye bleaching process followed pseudo first order kinetics with respect to TB, urea, and H ion, whereas significant decoloration in the presence of urea proved that reductants control the redox reaction. No decoloration in acidic medium with diverse ions was seen compared to alkaline media, showing that water pH played an important role in the bleaching of dye. The reduction/bleaching of dye was investigated at different temperatures, and energy parameters were evaluated for a TB -Urea reaction, including the energy of activation ( = 39.60 kJ·mol ), enthalpy of activation (? = 34?kJ·mol ), entropy of activation (? = 146.5 kJ mol ·K ), and free energy of activation (ΔG* = -52.35 kJ·mol ). A mechanism of interaction of diverse ions in dye bleaching and a mechanism of reduction based on the above findings is proposed.

关键词： TB     diverse ions     suppress     decoloration    

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Characteristics of chemical components in PM

Jianwu SHI,Xiang DING,Yue ZHOU,Ran YOU,Lu HUANG,Jiming HAO,Feng XIANG,Jian YANG,Ze SHI,Xinyu HAN,Ping NING

《环境科学与工程前沿（英文）》 2016年 第10卷 第5期 doi: 10.1007/s11783-016-0841-2

摘要： The mass concentrations of PM were studied at a plateau city. Seasonal and spatial variation of chemical components in PM were analyzed. Primary emissions were the main contributors of PM . A sampling campaign including summer, autumn and winter of 2014 and spring of 2015 was accomplished to obtain the characteristic of chemical components in PM at three sites of Kunming, a plateau city in South-west China. Nine kinds of water-soluble inorganic ions (WSI), organic and element carbon (OC and EC) in PM were analyzed by ion chromatography and thermal optical reflectance method, respectively. Results showed that the average concentrations of total WSI, OC and EC were 22.85±10.95 μg·m , 17.83±9.57 μg·m and 5.11±4.29 μg·m , respectively. They totally accounted for 53.0% of PM . Secondary organic and inorganic aerosols (SOA and SIA) were also assessed by the minimum ratio of OC/EC, nitrogen and sulfur oxidation ratios. The annual average concentrations of SOA and SIA totally accounted for 28.3% of the PM concentration. The low proportion suggested the primary emission was the main source of PM in Kunming. However, secondary pollution in the plateau city should also not be ignorable, due to the appropriate temperature and strong solar radiation, which can promote the atmospheric photochemical reactions.

关键词： PM2.5     Plateau city     Organic carbon     Element carbon     Inorganic ions     Secondary components    

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The influence of curing conditions on the mechanical properties and leaching of inorganic polymers made

Remus I. Iacobescu, Valérie Cappuyns, Tinne Geens, Lubica Kriskova, Silviana Onisei, Peter T. Jones, Yiannis Pontikes

《化学科学与工程前沿（英文）》 2017年 第11卷 第3期   页码 317-327 doi: 10.1007/s11705-017-1622-6

摘要： This study reports on the impact of the curing conditions on the mechanical properties and leaching of inorganic polymer (IP) mortars made from a water quenched fayalitic slag. Three similar IP mortars were produced by mixing together slag, aggregate and activating solution, and cured in three different environments for 28 d: a) at 20 °C and relative humidity (RH) ~ 50% (T20RH50), b) at 20 °C and RH≥90% (T20RH90) and c) at 60 °C and RH ~ 20% (T60RH20). Compressive strength (EN 196-1) varied between 19 MPa (T20RH50) and 31 MPa (T20RH90). This was found to be attributed to the cracks formed upon curing. Geochemical modelling and two leaching tests were performed, the EA NEN 7375 tank test, and the BS EN 12457-1 single batch test. Results show that Cu, Ni, Pb, Zn and As leaching occurred even at high pH, which varied between 10 and 11 in the tank test’s leachates and between 12 and 12.5 in the single batch’s leachates. Leaching values obtained were below the requirements for non-shaped materials of Flemish legislation for As, Cu and Ni in the single batch test.

关键词： inorganic polymer     geochemical leaching modelling     heavy metals     recycling     non-ferrous fayalitic slag     curing    

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氢气分离膜研究进展

栾永超,熊亚林,何广利,刘聪敏,李帅

《中国工程科学》 2022年 第24卷 第3期   页码 140-152 doi: 10.15302/J-SSCAE-2022.03.015

摘要：

氢气是重要的工业原料和清洁燃料，氢气分离具有重要的经济和社会价值；膜分离法装置结构简单、转换高效、投资成本低且环境友好，在氢气分离领域应用前景广阔；氢气分离膜的性能是影响氢气分离过程效率的决定性因素，因而氢气分离膜技术研究一直是国内外膜领域的热点方向。本文阐述了氢气分离膜的应用需求、基本机理，系统梳理了致密金属膜、无机多孔膜、金属‒ 有机框架（MOF）膜、有机聚合物膜、混合基质膜的研究进展。研究发现，尽管无机多孔膜、有机聚合物膜、混合基质膜等具有良好的氢气分离纯化性能，但在分布式、小型化的应用场景下的分离性能仍待改进提高；提高钯基金属膜的抗毒化性能、优化膜的性价比，是促进工业应用的有效手段；整合无机多孔膜、MOF膜的优点，可促进分子筛分机制膜的性能跃升；有机聚合物膜的耐温、机械等性能仍需提高；对现有高分子膜材料进行改性、制备高分子合金，是开发新型气体分离膜的重要方向；混合基质膜在进行可控调节排布后，将显著提高膜性能。多种氢气分离膜的研究和应用，支撑了氢气分离纯化过程的发展，在材料种类丰富、制备工艺进步后将发挥更大的工程价值。

关键词： 氢气分离膜；致密金属膜；无机多孔膜；金属‒ 有机框架膜；有机聚合物膜；混合基质膜；氢气纯化    

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Enhanced charge extraction for all-inorganic perovskite solar cells by graphene oxide quantum dots modified

《化学科学与工程前沿（英文）》 2023年 第17卷 第5期   页码 516-524 doi: 10.1007/s11705-022-2238-z

摘要： All-inorganic cesium lead bromide (CsPbBr3) perovskite solar cells have been attracting growing interest due to superior performance stability and low cost. However, low light absorbance and large charge recombination at TiO2/CsPbBr3 interface or within CsPbBr3 film still prevent further performance improvement. Herein, we report devices with high power conversion efficiency (9.16%) by introducing graphene oxide quantum dots (GOQDs) between TiO2 and perovskite layers. The recombination of interfacial radiation can be effectively restrained due to enhanced charge transfer capability. GOQDs with C-rich active sites can involve in crystallization and fill within the CsPbBr3 perovskite film as functional semiconductor additives. This work provides a promising strategy to optimize the crystallization process and boost charge extraction at the surface/interface optoelectronic properties of perovskites for high efficient and low-cost solar cells.

关键词： all inorganic     perovskite solar cells     graphene oxide quantum dots     high performance     stability    

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High performance solid-state thermoelectric energy conversion via inorganic metal halide perovskites

Lifu YAN, Lingling ZHAO, Guiting YANG, Shichao LIU, Yang LIU, Shangchao LIN

《能源前沿（英文）》 2022年 第16卷 第4期   页码 581-594 doi: 10.1007/s11708-022-0831-y

摘要： Solid-state thermoelectric energy conversion devices attract broad research interests because of their great promises in waste heat recycling, space power generation, deep water power generation, and temperature control, but the search for essential thermoelectric materials with high performance still remains a great challenge. As an emerging low cost, solution-processed thermoelectric material, inorganic metal halide perovskites CsPb(I1–xBrx)3 under mechanical deformation is systematically investigated using the first-principle calculations and the Boltzmann transport theory. It is demonstrated that halogen mixing and mechanical deformation are efficient methods to tailor electronic structures and charge transport properties in CsPb(I1–xBrx)3 synergistically. Halogen mixing leads to band splitting and anisotropic charge transport due to symmetry-breaking-induced intrinsic strains. Such band splitting reconstructs the band edge and can decrease the charge carrier effective mass, leading to excellent charge transport properties. Mechanical deformation can further push the orbital energies apart from each other in a more controllable manner, surpassing the impact from intrinsic strains. Both anisotropic charge transport properties andZT values are sensitive to the direction and magnitude of strain, showing a wide range of variation from 20% to 400% (with a ZT value of up to 1.85) compared with unstrained cases. The power generation efficiency of the thermoelectric device can reach as high as approximately 12% using mixed halide perovskites under tailored mechanical deformation when the heat-source is at 500 K and the cold side is maintained at 300 K, surpassing the performance of many existing bulk thermoelectric materials.

关键词： inorganic metal halide perovskites     mechanical deformation     thermoelectrics     first-principle calculations     Boltzmann transport theory    

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2019年美国化学会年会（2019 ACS National Meeting & Expo）

会议日期： 2019年03月31日

会议地点： 美国/佛罗里达/奥兰多

主办单位： 美国化学会（ACS）

A comparative study on polypropylene separators coated with different inorganic materials for lithium-ion

Linghui Yu, Jiansong Miao, Yi Jin, Jerry Y.S. Lin

《化学科学与工程前沿（英文）》 2017年 第11卷 第3期   页码 346-352 doi: 10.1007/s11705-017-1648-9

摘要： Coating commercial porous polyolefin separators with inorganic materials can improve the thermal stability of the polyolefin separators and hence improve the safety of lithium-ion batteries. Several different inorganic materials have been studied for the coating. However, there lacks a study on how different inorganic materials affect the properties of separators, in terms of thermal stability and cell performance. Herein, we present such a study on coating a commercial polypropylene separator with four inorganic materials, i.e., Al O , SiO , ZrO and zeolite. All inorganic coatings have improved thermal stability of the separators although with differences. The coating layers add 28%–45% of electrical resistance compared with the pure polypropylene separator, but all the cells prepared with the coated polypropylene separators have the same electrical chemical performance as the uncoated separator in terms of rate capability and capacities at different temperatures.

关键词： lithium-ion battery     battery safety     composite separator     porosity     tortuosity    

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标题 作者 时间 类型 操作

Simultaneous sorption of aqueous phenanthrene and phosphate onto bentonites modified with AlCl3 and CTMAB

ZHU Runliang, ZHU Lizhong, ZHU Jianxi

期刊论文

Organic and inorganic phosphorus uptake by bacteria in a plug-flow microcosm

Jinbo ZHAO, Xuehua LIU

期刊论文

Immobilization of laccase on organic–inorganic nanocomposites and its application in the removal of phenolic

期刊论文

Thermal transport in organic/inorganic composites

Bin LIU, Lan DONG, Qing XI, Xiangfan XU, Jun ZHOU, Baowen LI

期刊论文

Flame-retardant properties of

Kumar Sai SMARAN, Rajashekar BADAM, Raman VEDARAJAN, Noriyoshi MATSUMI

期刊论文

含高浓度无机颗粒的有机废液分离及回用技术

汪华林, 付鹏波, 李剑平, 黄渊, 赵颖, 姜来, 方向晨, 杨涛, 黄朝晖, 黄诚

期刊论文

Formation of secondary inorganic aerosol in a frigid urban atmosphere

期刊论文

Spectrokinetics study of probable effects of diverse inorganic ions on bleaching of dye

Rafia AZMAT, Masooda QADRI, Fahim UDDIN

期刊论文

Characteristics of chemical components in PM

Jianwu SHI,Xiang DING,Yue ZHOU,Ran YOU,Lu HUANG,Jiming HAO,Feng XIANG,Jian YANG,Ze SHI,Xinyu HAN,Ping NING

期刊论文

The influence of curing conditions on the mechanical properties and leaching of inorganic polymers made

Remus I. Iacobescu, Valérie Cappuyns, Tinne Geens, Lubica Kriskova, Silviana Onisei, Peter T. Jones, Yiannis Pontikes

期刊论文

氢气分离膜研究进展

栾永超,熊亚林,何广利,刘聪敏,李帅

期刊论文

Enhanced charge extraction for all-inorganic perovskite solar cells by graphene oxide quantum dots modified

期刊论文

High performance solid-state thermoelectric energy conversion via inorganic metal halide perovskites

Lifu YAN, Lingling ZHAO, Guiting YANG, Shichao LIU, Yang LIU, Shangchao LIN

期刊论文

2019年美国化学会年会（2019 ACS National Meeting & Expo）

2019年03月31日

会议信息

A comparative study on polypropylene separators coated with different inorganic materials for lithium-ion

Linghui Yu, Jiansong Miao, Yi Jin, Jerry Y.S. Lin

期刊论文