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期刊论文 114

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催化剂 2

Au/Ti双功能催化剂 1

CO2 加氢 1

H2有效利用率 1

K 助剂 1

Mn 助剂 1

Pt–Ba–Ce/γ-Al2O3 催化剂，物理化学性质，NOx存储和还原，NOx 排放，H2 还原剂 1

SOFC 1

Si/Al 比值 1

n 型碳纳米管 1

丙烯环氧化 1

乙烷干重整 1

二氧化碳 1

二甲苯 1

产氢活性 1

介观动力学模型 1

催化剂描述符 1

催化还原 1

光催化 1

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Response of bioaerosol cells to photocatalytic inactivation with ZnO and TiO impregnated onto Perlite and Poraver carriers

《环境科学与工程前沿（英文）》 2021年 第15卷 第3期 doi: 10.1007/s11783-020-1335-9

摘要：

•ZnO/Perlite inactivated 72% of bioaerosols in continuous gas phase.

关键词： Immobilized catalysts     Continuous flow     Photocatalysis     Bioaerosols     Cytotoxicity     Inactivation mechanism    

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Immobilized

Pei MA, Dan ZHANG

《环境科学与工程前沿（英文）》 2012年 第6卷 第4期   页码 498-508 doi: 10.1007/s11783-012-0429-4

摘要： To investigate the potential use of ( ) residue for Cd adsorption, poly alcohol Na alginate (PVA) was applied to immobilize it. The parameters including contact time, pH, adsorbent dosages, and coexisting metal ions were studied. The suitable pH for immobilized was 4–7 wider than that for raw (pH 6–7). In the presence of Pb concentration varying from 0 to 30 mg·L , the Cd adsorption ratios declined by 6.71% and 47.45% for immobilized and raw , respectively. While, with the coexisting ion Cu concentration varied from 0 to 30 mg·L , the Cd adsorption ratios declined by 12.97% and 50.56% for immobilized and raw , respectively. The Cd adsorption isotherms in single–metal and dual-metal solutions were analyzed by using Langmuir, Freundlich, and Dubinin–Radushkevich models. The Cd adsorption capacities ( ) in single-metal solution were 6.448 mg·L and 2.832 mg·L for immobilized and raw , respectively. The of immobilized were 1.850 mg Cd·g in Cd + Pb solution and 3.961 mg Cd·g in Cd + Cu solution, respectively. The Cd adsorption processes subjected to both adsorbents follow pseudo-second-order model. Mechanism study showed the functional group of was –OH, –NH, –CO, and PVA played an important role in metal adsorbing. Mining wastewater treatment test showed that PVA–SA-immobilized was effective in mixed pollutant treatment even for wastewater containing metal ions in very low concentration.

关键词： immobilization     Lentinus edodes residue     competitive adsorption     isotherm    

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Degradation of bisphenol A by microorganisms immobilized on polyvinyl alcohol microspheres

Xue BAI, Hanchang SHI, Zhengfang YE, Qiujin SUN, Qing WANG, Zhongyou WANG

《环境科学与工程前沿（英文）》 2013年 第7卷 第6期   页码 844-850 doi: 10.1007/s11783-013-0487-2

摘要： In this study, microorganisms (named B111) were immobilized on polyvinyl alcohol microspheres prepared by the inverse suspension crosslinked method. The biodegradation of bisphenol A (BPA) and 4-hydroxybenzaldehyde, a degradation product of BPA, by free and immobilized B111 was investigated. The BPA degradation studies were carried out at initial BPA concentrations ranging from 25 to 150 mg·L . The affinity constant K and maximum degradation rate were 98.3 mg·L and 19.7 mg·mg VSS·d for free B111, as well as 87.2 mg·L and 21.1 mg·mg VSS·d for immobilized B111, respectively. 16S rDNA gene sequence analyses confirmed that the dominant genera were and for BPA biodegradation in microorganisms B111.

关键词： bisphenol A     polyvinyl alcohol     immobilized microorganisms     4-hydroxybenzaldehyde    

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Mercury removal and recovery by immobilized

Meifang CHIEN, Ryo NAKAHATA, Tetsuya ONO, Keisuke MIYAUCHI, Ginro ENDO

《化学科学与工程前沿（英文）》 2012年 第6卷 第2期   页码 192-197 doi: 10.1007/s11705-012-1284-3

摘要： From several mercury removing microorganisms, we selected MB1, which is non-pathogenic, broad-spectrum mercury resistant, mercuric ion reducing, heat tolerant, and spore-forming, as a useful bacterium for bioremediation of mercury pollution. In this study, mercury removal performance of the immobilized MB1 was investigated to develop safe, efficient and stable catalytic bio-agent for mercury bioremediation. The results showed that the alginate gel immobilized MB1 cells efficiently removed 80% of mercury from the solution containing 10 mg/L mercuric chloride within 24 h. These cells still had high activity of mercury removal even after mercuric ion loading was repeated for nine times. The analysis of mercury contents of the alginate beads with and without immobilized MB1 suggested that a large portion of reduced metallic mercury was trapped in the gel beads. It was concluded that the alginate gel immobilized MB1 cells have potential to remove and recover mercury from mercury-containing water.

关键词： mercury removal     immobilized bacteria     alginate gel     bioremediation    

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Enhanced methane production during long-term UASB operation at high organic loads as enabled by the immobilized

《环境科学与工程前沿（英文）》 2022年 第16卷 第6期 doi: 10.1007/s11783-021-1505-4

摘要：

• Fungi enable the constant UASB operation even at OLR of 25.0 kg/(m3×d).

关键词： Anaerobic digestion     Fungi     Methane production     High OLR     Microbial community    

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of dilution rate on dynamic and steady-state biofilm characteristics during phenol biodegradation by immobilized

Veena Bangalore Rangappa, Vidya Shetty Kodialbail, Saidutta Malur Bharthaiyengar

《环境科学与工程前沿（英文）》 2016年 第10卷 第4期 doi: 10.1007/s11783-016-0863-9

摘要： Continuous pulsed plate bioreactor (PPBR) was used for phenol biodegradation. cells immobilized on granular activated carbon was used. Dynamic and steady state biofilm characteristics depend on dilution rate (DR). Lower DR favour phenol degradation and uniform, thick biofilm formation. Exo polymeric substance production in biofilm are favoured at lower dilution rates. Pulsed plate bioreactor (PPBR) is a biofilm reactor which has been proven to be very efficient in phenol biodegradation. The present paper reports the studies on the effect of dilution rate on the physical, chemical and morphological characteristics of biofilms formed by the cells of Pseudomonas desmolyticum on granular activated carbon (GAC) in PPBR during biodegradation of phenol. The percentage degradation of phenol decreased from 99% to 73% with an increase in dilution rate from 0.33 h?1 to 0.99 h?1 showing that residence time in the reactor governs the phenol removal efficiency rather than the external mass transfer limitations. Lower dilution rates favor higher production of biomass, extracellular polymeric substances (EPS) as well as the protein, carbohydrate and humic substances content of EPS. Increase in dilution rate leads to decrease in biofilm thickness, biofilm dry density, and attached dry biomass, transforming the biofilm from dense, smooth compact structure to a rough and patchy structure. Thus, the performance of PPBR in terms of dynamic and steady-state biofilm characteristics associated with phenol biodegradation is a strong function of dilution rate. Operation of PPBR at lower dilution rates is recommended for continuous biologic treatment of wastewaters for phenol removal.

关键词： Biofilm     Exopolymeric substances     Phenol     Dilution rate     Pulsed plate bioreactor    

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Regioselective acylation of pyridoxine catalyzed by immobilized lipase in ionic liquid

BAI Shu, REN Mengyuan, WANG Lele, SUN Yan

《化学科学与工程前沿（英文）》 2008年 第2卷 第3期   页码 301-307 doi: 10.1007/s11705-008-0060-x

摘要： The regioselective acylation of pyridoxine catalyzed by immobilized lipase () in 1-butyl-3-methylimidazolium hexafluorophosphate ([BMIM]PF) has been investigated, and compared with that in acetonitrile (ACN). The acetylation of pyridoxine using acetic anhydride in [BMIM]PF gave comparable conversion of pyridoxine to 5-monoacetyl pyridoxine with considerably higher regioselectivity (93%–95%) than that in ACN (70%–73%). Among the tested parameters, water activity () and temperature have profound effects on the reaction performances in either [BMIM]PF or ACN. For the reaction in [BMIM]PF, higher temperature (50°C–55°C) and lower (<0.01) are preferable conditions to obtain better conversion and regioselectivity. Mass transfer limitation and intrinsic kinetic from the ionic nature of ionic liquids (ILs) may account for a different rate-temperature profile and a lower velocity at lower temperature in [BMIM]PF-mediated reaction. Moreover, consecutive batch reactions for enzyme reuse also show that lipase exhibited a much higher thermal stability and better reusability in [BMIM]PF than in ACN, which represents another advantage of ILs as an alternative to traditional solvents beyond green technology.

关键词： ACN     stability     1-butyl-3-methylimidazolium hexafluorophosphate     different rate-temperature     alternative    

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Electrochemical CO reduction to C products over CuZn intermetallic catalysts synthesized by electrodeposition

《能源前沿（英文）》 doi: 10.1007/s11708-023-0898-0

摘要： Electrocatalytic CO2 reduction (ECR) offers an attractive approach to realizing carbon neutrality and producing valuable chemicals and fuels using CO2 as the feedstock. However, the lack of cost-effective electrocatalysts with better performances has seriously hindered its application. Herein, a one-step co-electrodeposition method was used to introduce Zn, a metal with weak *CO binding energy, into Cu to form Cu/Zn intermetallic catalysts (Cu/Zn IMCs). It was shown that, using an H-cell, the high Faradaic efficiency of C2+ hydrocarbons/alcohols (FEC2+) could be achieved in ECR by adjusting the surface metal components and the applied potential. In suitable conditions, FEC2+ and current density could be as high as 75% and 40 mA/cm2, respectively. Compared with the Cu catalyst, the Cu/Zn IMCs have a lower interfacial charge transfer resistance and a larger electrochemically active surface area (ECSA), which accelerate the reaction. Moreover, the *CO formed on Zn sites can move to Cu sites due to its weak binding with *CO, and thus enhance the C–C coupling on the Cu surface to form C2+ products.

关键词： carbon dioxide electroreduction     electrochemistry     co-electrodeposition     intermetallic catalysts     value-added chemicals    

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Oxygen reduction electrocatalysis: From conventional to single-atomic platinum-based catalysts for proton

《能源前沿（英文）》 doi: 10.1007/s11708-023-0907-3

摘要： Platinum (Pt)-based materials are still the most efficient and practical catalysts to drive the sluggish kinetics of cathodic oxygen reduction reaction (ORR) in proton exchange membrane fuel cells (PEMFCs). However, their catalysis and stability performance still need to be further improved in terms of corrosion of both carbon support and Pt catalyst particles as well as Pt loading reduction. Based on the developed synthetic strategies of alloying/nanostructuring Pt particles and modifying/innovating supports in developing conventional Pt-based catalysts, Pt single-atom catalysts (Pt SACs) as the recently burgeoning hot materials with a potential to achieve the maximum utilization of Pt are comprehensively reviewed in this paper. The design thoughts and synthesis of various isolated, alloyed, and nanoparticle-contained Pt SACs are summarized. The single-atomic Pt coordinating with non-metals and alloying with metals as well as the metal-support interactions of Pt single-atoms with carbon/non-carbon supports are emphasized in terms of the ORR activity and stability of the catalysts. To advance further research and development of Pt SACs for viable implementation in PEMFCs, various technical challenges and several potential research directions are outlined.

关键词： oxygen reduction electrocatalysis     Pt single-atom catalysts     conventional Pt-based catalysts     design thoughts and synthesis     metal-support interactions    

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

《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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Promising approach for preparing metallic single-atom catalysts: electrochemical deposition

《能源前沿（英文）》 2022年 第16卷 第4期   页码 537-541 doi: 10.1007/s11708-022-0837-5

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Current challenge and perspective of PGM-free cathode catalysts for PEM fuel cells

Gang WU

《能源前沿（英文）》 2017年 第11卷 第3期   页码 286-298 doi: 10.1007/s11708-017-0477-3

摘要： To significantly reduce the cost of proton exchange membrane fuel cells, platinum-group metal (PGM)-free cathode catalysts are highly desirable. Current M-N-C (M: Fe, Co or Mn) catalysts are considered the most promising due to their encouraging performance. The challenge thus has been their stability under acidic conditions, which has hindered their use for any practical applications. In this review, based on the author’s research experience in the field for more than 10 years, current challenges and possible solutions to overcome these problems were discussed. The current Edisonian approach (i.e., trial and error) to developing PGM-free catalysts has been ineffective in achieving revolutionary breakthroughs. Novel synthesis techniques based on a more methodological approach will enable atomic control and allow us to achieve optimal electronic and geometric structures for active sites uniformly dispersed within the 3D architectures. Structural and chemical controlled precursors such as metal-organic frameworks are highly desirable for making catalysts with an increased density of active sites and strengthening local bonding structures among N, C and metals. Advanced electrochemical and physical characterization, such as electron microscopy and X-ray absorption spectroscopy should be combined with first principle density functional theory (DFT) calculations to fully elucidate the active site structures.

关键词： oxygen reduction     fuel cells     cathode     nonprecious metal catalysts     carbon nanocomposites    

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Selective preparation for biofuels and high value chemicals based on biochar catalysts

《能源前沿（英文）》 2023年 第17卷 第5期   页码 635-653 doi: 10.1007/s11708-023-0878-4

摘要： The reuse of biomass wastes is crucial toward today’s energy and environmental crisis, among which, biomass-based biochar as catalysts for biofuel and high value chemical production is one of the most clean and economical solutions. In this paper, the recent advances in biofuels and high chemicals for selective production based on biochar catalysts from different biomass wastes are critically summarized. The topics mainly include the modification of biochar catalysts, the preparation of energy products, and the mechanisms of other high-value products. Suitable biochar catalysts can enhance the yield of biofuels and higher-value chemicals. Especially, the feedstock and reaction conditions of biochar catalyst, which affect the efficiency of energy products, have been the focus of recent attentions. Mechanism studies based on biochar catalysts will be helpful to the controlled products. Therefore, the design and advancement of the biochar catalyst based on mechanism research will be beneficial to increase biofuels and the conversion efficiency of chemicals into biomass. The advanced design of biochar catalysts and optimization of operational conditions based on the biomass properties are vital for the selective production of high-value chemicals and biofuels. This paper identifies the latest preparation for energy products and other high-value chemicals based on biochar catalysts progresses and offers insights into improving the yield of high selectivity for products as well as the high recyclability and low toxicity to the environment in future applications.

关键词： biomass     biochar catalysts     biofuels     high chemicals    

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A magnetic adsorbent based on salicylic acid-immobilized magnetite nano-particles for pre-concentration

Hossein Abdolmohammad-Zadeh, Arezu Salimi

《化学科学与工程前沿（英文）》 2021年 第15卷 第2期   页码 450-459 doi: 10.1007/s11705-020-1930-0

摘要： In this research, an eco-friendly magnetic adsorbent based on Fe O /salicylic acid nanocomposite was fabricated using a facile one-pot co-precipitation method. The crystalline and morphological characterization of the prepared nanocomposite was performed by field emission scanning electron microscopy, X-ray diffraction, and Fourier transform infrared spectroscopy. The nanocomposite was employed as a magnetic solid-phase extraction agent for separation of Cd(II) ions from synthetic solutions. Some experimental factors affecting the extraction efficiency were investigated and optimized. Following elution with acetic acid (pH 3.5), the pre-concentrated analyte was quantified by flame atomic absorption spectrometry. In optimal conditions, a linear calibration graph was achieved in the concentration range of 0.2‒30 ng·mL with a determination coefficient ( ) of 0.9953. The detection limit, the enhancement factor, inter- and intra-day relative standard deviations (for six consecutive extractions at the concentration level of 10 ng·mL ) were 0.04 ng·mL , 100, 2.38% and 1.52%, respectively. To evaluate the accuracy of the method, a certified reference material (NIST SRM 1643e) was analyzed, and there was a good agreement between the certified and the measured values. It was successfully utilized to determine cadmium in industrial wastewater samples and the attained relative recovery values were between 96.8% and 103.2%.

关键词： cadmium     magnetic solid-phase extraction     Fe3O4 nanoparticles     Fe3O4/salicylic acid nanocomposite     flame atomic absorption spectrometry    

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Catalytic combustion of volatile organic compounds using perovskite oxides catalysts—a review

《化学科学与工程前沿（英文）》 2023年 第17卷 第11期   页码 1649-1676 doi: 10.1007/s11705-023-2324-x

摘要： With the rapid development of industry, volatile organic compounds (VOCs) are gaining attention as a class of pollutants that need to be eliminated due to their adverse effects on the environment and human health. Catalytic combustion is the most popular technology used for the removal of VOCs as it can be adapted to different organic emissions under mild conditions. This review first introduces the hazards of VOCs, their treatment technologies, and summarizes the treatment mechanism issues. Next, the characteristics and catalytic performance of perovskite oxides as catalysts for VOC removal are expounded, with a special focus on lattice distortions and surface defects caused by metal doping and surface modifications, and on the treatment of different VOCs. The challenges and the prospects regarding the design of perovskite oxides catalysts for the catalytic combustion of VOCs are also discussed. This review provides a reference base for improving the performance of perovskite catalysts to treat VOCs.

关键词： perovskite oxides     volatile organic compounds     catalytic combustion     reaction mechanism    

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标题 作者 时间 类型 操作

Response of bioaerosol cells to photocatalytic inactivation with ZnO and TiO impregnated onto Perlite and Poraver carriers

期刊论文

Immobilized

Pei MA, Dan ZHANG

期刊论文

Degradation of bisphenol A by microorganisms immobilized on polyvinyl alcohol microspheres

Xue BAI, Hanchang SHI, Zhengfang YE, Qiujin SUN, Qing WANG, Zhongyou WANG

期刊论文

Mercury removal and recovery by immobilized

Meifang CHIEN, Ryo NAKAHATA, Tetsuya ONO, Keisuke MIYAUCHI, Ginro ENDO

期刊论文

Enhanced methane production during long-term UASB operation at high organic loads as enabled by the immobilized

期刊论文

of dilution rate on dynamic and steady-state biofilm characteristics during phenol biodegradation by immobilized

Veena Bangalore Rangappa, Vidya Shetty Kodialbail, Saidutta Malur Bharthaiyengar

期刊论文

Regioselective acylation of pyridoxine catalyzed by immobilized lipase in ionic liquid

BAI Shu, REN Mengyuan, WANG Lele, SUN Yan

期刊论文

Electrochemical CO reduction to C products over CuZn intermetallic catalysts synthesized by electrodeposition

期刊论文

Oxygen reduction electrocatalysis: From conventional to single-atomic platinum-based catalysts for proton

期刊论文

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

期刊论文

Promising approach for preparing metallic single-atom catalysts: electrochemical deposition

期刊论文

Current challenge and perspective of PGM-free cathode catalysts for PEM fuel cells

Gang WU

期刊论文

Selective preparation for biofuels and high value chemicals based on biochar catalysts

期刊论文

A magnetic adsorbent based on salicylic acid-immobilized magnetite nano-particles for pre-concentration

Hossein Abdolmohammad-Zadeh, Arezu Salimi

期刊论文

Catalytic combustion of volatile organic compounds using perovskite oxides catalysts—a review

期刊论文