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| 1 | Progress in carbon dioxide separation and capture: A review显示文摘这篇文章考察在 CO2 分离和俘获研究和工程取得的进步。各种各样的技术例如吸收,吸附,和膜分离,彻底地被讨论。象化学循环的燃烧和基于水合物的分离那样的新概念也简短被介绍。未来方向被建议。隐遁方法海洋授精和矿物质碳酸饱和技术例如造林,也被盖住。地下的注射和直接海洋垃圾场没被盖住。 | Hongqun Yang Zhenghe Xu Maohong Fan Rajender Gupta Rachid B Slimane Alan E Bland Ian Wright | 2008 | Journal of Environmental Sciences2008，20，1： | 89 |
| 2 | Review of the progress in preparing nano TiO_2: An important environmental engineering material显示文摘TiO2 nanomaterial is promising with its high potential and outstanding performance in photocatalytic environmental applications, such as CO2 conversion, water treatment, and air quality control. For many of these applications, the particle size, crystal structure and phase,porosity, and surface area influence the activity of TiO2 dramatically. TiO2 nanomaterials with special structures and morphologies, such as nanospheres, nanowires, nanotubes, nanorods,and nanoflowers are thus synthesized due to their desired characteristics. With an emphasis on the different morphologies of TiO2 and the influence factors in the synthesis, this review summarizes fourteen TiO2 preparation methods, such as the sol–gel method, solvothermal method, and reverse micelle method. The TiO2 formation mechanisms, the advantages and disadvantages of the preparation methods, and the photocatalytic environmental application examples are proposed as well. | Yan Wang Yiming He Qinghua Lai Maohong Fan | 2014 | Journal of Environmental Sciences2014，26，11： | 20 |
| 3 | Removal of tetracycline from water by Fe-Mn binary oxide显示文摘Significant concerns have been raised over the presence of antibiotics including tetracyclines in aquatic environments.A series of FeMn binary oxide with different Fe:Mn molar ratios was synthesized by a simultaneous oxidation and coprecipitation process for TC removal.Results showed that Fe-Mn binary oxide had higher removal efficiency than that of hydrous iron oxide and hydrous manganese oxide,and that the oxide with a Fe:Mn molar ratio of 5:1 was the best in removal than other molar ratios.The tetracycline removal was highly pH dependent.The removal of tetracycline decreased with the increase of initial concentration,but the absolute removal quantity was more at high concentration.The presence of cations and anions such as Ca2+,Mg2+,CO32-and SO42-had no significant effect on the tetracycline removal in our experimental conditions,while SiO32-and PO43-had hindered the adsorption of tetracycline.The mechanism investigation found that tetracycline removal was mainly achieved by the replacement of surface hydroxyl groups by the tetracycline species and formation of surface complexes at the water/oxide interface.This primary study suggests that Fe-Mn binary oxide with a proper Fe:Mn molar ratio will be a very promising material for the removal of tetracycline from aqueous solutions. | Huijuan Liu Yang Yang Jin Kang Maohong Fan Jiuhui Qu | 2012 | Journal of Environmental Sciences2012，24，2： | 13 |
| 4 | Synthesis of linear low-density polyethylene-g-poly(acrylic acid)-co-starch/organo-montmorillonite hydrogel composite as an adsorbent for removal of Pb(Ⅱ) from aqueous solutions显示文摘The purpose of this work is to remove Pb(II) from the aqueous solution using a type of hydrogel composite. A hydrogel composite consisting of waste linear low density polyethylene, acrylic acid, starch, and organo-montmorillonite was prepared through emulsion polymerization method. Fourier transform infrared spectroscopy(FTIR), Solid carbon nuclear magnetic resonance spectroscopy(CNMR)), silicon-29 nuclear magnetic resonance spectroscopy(Si NMR)), and X-ray diffraction spectroscope((XRD) were applied to characterize the hydrogel composite. The hydrogel composite was then employed as an adsorbent for the removal of Pb(II) from the aqueous solution. The Pb(II)-loaded hydrogel composite was characterized using Fourier transform infrared spectroscopy(FTIR)),scanning electron microscopy(SEM)), and X-ray photoelectron spectroscopy((XPS)). From XPS results, it was found that the carboxyl and hydroxyl groups of the hydrogel composite participated in the removal of Pb(II). Kinetic studies indicated that the adsorption of Pb(II)followed the pseudo-second-order equation. It was also found that the Langmuir model described the adsorption isotherm better than the Freundlich isotherm. The maximum removal capacity of the hydrogel composite for Pb(II) ions was 430 mg/g. Thus, the waste linear low-density polyethylene-g-poly(acrylic acid)-co-starch/organo-montmorillonite hydrogel composite could be a promising Pb(II) adsorbent. | Maryam Irani Hanafi Ismail Zulkifli Ahmad Maohong Fan | 2015 | Journal of Environmental Sciences2015，27，1： | 11 |
| 5 | Coal and coal byproducts:A large and developable unconventional resource for critical materials—Rare earth elements显示文摘Rare earth elements(REEs) are critical materials and provide significant values to national security,energy production, environmental protection and economic growth. The supply of REEs in U.S. solely relies on import as domestic production of REEs was ceased because of the environmental concerns during mining and lack of competitiveness. Nonetheless, unconventional REEs-containing resources,including produced water. acid mine drainage, and coal and coal byproducts(C&CBs) contain significant amounts of REEs. However, the concentrations of REEs in these resources are several orders of magnitude lower than that of REEs ores. Thus, extraction of REEs from these materials is challenging. Here we report REEs extraction with environmentally friendly method that successfully concentrated REEs from312 ppm in fly ash to 99.4% in the final product. Especially, the five critically important REEs(Dy, Eu, Nd.Tb. and Y) account for up to ~63% of the total weight of all REEs in the final 99.4%-purity product. Coal fly ash is one of the major solid coal utilization byproducts, representing great potential resources for REEs extraction. Extraction of REEs from these unconventional resources could be the way to secure domestic supply of these critical materials. | Zaixing Huang Maohong Fan Hanjing Tiand | 2018 | Journal of Rare Earths2018，36，4： | 11 |
| 6 | Effect of competing solutes on arsenic(Ⅴ) adsorption using iron and aluminum oxides显示文摘The study focused on the effect of several typical competing solutes on removal of arsenic with Fe_2O_3 and AL_2O_3.The test results indicate that chloride,nitrate and sulfate did not have detectable effects,and that selenium(Ⅳ)(Se(Ⅳ))and vanadium(Ⅴ)(V(Ⅴ)) showed slight effects on the adsorption of As(Ⅴ)with Fe_2O_3.The results also showed that adsorption of As(Ⅴ)on AL_2O_3 was not affected by chloride and nitrate anions,but slightly by Se(Ⅳ)and V(Ⅴ)ions.Unlike the adsorption of As(Ⅴ)with Fe_2O_3,that with Fe_2O_3 was affected by the presence of sulfate in water solutions.Both phosphate and silica have significant adverse effects on the adsorption of As(Ⅴ)adsorption with Fe_2O_3 and Al_2O_3.Compared to the other tested anions,phosphate anion was found to be the most prominent solute affecting the As(Ⅴ)adsorption with Fe_2O_3 and Al_2O_3.In general,Fe_2O_3 has a better performance than Al_2O_3 in removal of As(Ⅴ)within a water environment where multi competing solutes are present. | Youngran Jeong FAN Maohong Johannes Van Leeuwen Joshua F. Belczyk | 2007 | Journal of Environmental Sciences2007，19，8： | 10 |
| 7 | Catalyst design strategies towards highly shape-selective HZSM-5 for paraxylene through toluene alkylation显示文摘With the shape selective zeolite catalyst,toluene alkylation with methanol to para-xylene(MTPX)technology could produce highly pure para-xylene(PX)in one step.The lower feedstock cost and less energy consumption in products separation make it more competitive compared to the current toluene disproportionation route.Thus,MTPX is regarded as the most reasonable production route for PX production.This article reviews the strategies that applied to the preparation of high-performance catalysts for MTPX,with special focus on the precise control of pore dimension and acid sites distribution in zeolite to achieve the highest selectivity to PX.The outlook of the MTPX catalyst is also proposed to guide the catalyst development in the field. | Xin Huang Ruizhuang Wang Xu Pan Chuanfu Wang Maohong Fan Yufei Zhu Yonggang Wang Jin Peng | 2020 | Green Energy & Environment2020，5，4： | 10 |
| 8 | Oxidation of As(Ⅲ) by potassium permanganate显示文摘The oxidation of As(Ⅲ) with potassium permanganate was studied under conditions including pH, initial As(Ⅲ) concentration and dosage of Mn(VII). The results have shown that potassium permanganate was an effective agent for oxidation of As(Ⅲ) in a wide pH range. The pH value of tested water was not a significant factor affecting the oxidation of As(Ⅲ) by Mn(VII). Although theoretical redox analyses suggest that Mn(VII) should have better performance in oxidization of As(Ⅲ) within lower pH ranges, the experimental results show that the oxidation effciencies of As(Ⅲ) under basic and acidic conditions were similar, which may be due to the adsorption of As(Ⅲ) on the Mn(OH)2 and MnO2 resulting from the oxidation of As(Ⅲ). | LI Na FAN Maohong Van Leeuwen Johannes Saha Basudeb YANG Hongqun HUANG C. P. | 2007 | Journal of Environmental Sciences2007，19，7： | 10 |
| 9 | Long-term joint effect of nutrients and temperature increase on algal growth in Lake Taihu,China显示文摘To study how global warming and eutrophication affect water ecosystems,a multiplicative growth Monod model,modified by incorporating the Arrhenius equation,was applied to Lake Taihu to quantitatively study the relationships between algal biomass and both nutrients and temperature using long-term data.To qualitatively assess which factor was a limitation of the improved model,temperature variables were calculated using annual mean air temperature (AT),water temperature (WT),and their average temperature (ST),while substrate variables were calculated using annual mean total nitrogen (TN),total phosphorus (TP),and their weighted aggregate (R),respectively.The nine fitted curves showed that TN and AT were two important factors influencing algal growth;AT limited growth as algal photosynthesis is mainly carried out near the water surface;N leakage of phytoplankton and internal phosphorus load from sediment explains why TN was the best predictor of peak biomass using the Monod model.The fitted results suggest that annual mean algal biomass increased by 0.145 times when annual mean AT increased by 1.0°C.Results also showed that the more eutrophic the lake,the greater the effect AT had on algal growth.Subsequently,the long-term joint effect of annual temperature increase and eutrophication to water ecosystems can be quantitatively assessed and predicted. | Chun Ye Zhemin Shen Tao Zhang Maohong Fan Yangming Lei Jianda Zhang | 2011 | Journal of Environmental Sciences2011，23，2： | 9 |
| 10 | Rare earth elements:Properties and applications to methanol synthesis catalysis via hydrogenation of carbon oxides显示文摘Methanol(CH_3OH) is an important industrial chemical with a wide variety of uses. Industrial methanol synthesis catalysts are typically composed of Cu,Zn,and Al,but the use of catalysts incorporating rare earth elements has been shown to improve the catalytic performance. Due to their unique chemical and physical properties, the use of rare earth elements(scandium, yttrium, and the lanthanides) in catalysis in general has continued to increase over the past few decades, while the use of rare earth in methanol synthesis catalysts has not, despite often improving performance. The ability of several of the rare earth elements(Pr, Ce, Eu, Tb, Yb) to easily switch between oxidation states makes them beneficial for many different types of catalysts. However, for methanol synthesis the surface basicity is an important property, and the basic nature of the rare earth elements can be used to tune the basicity of catalysts. A small number of correlations between rare earth properties and catalytic performance have been observed, but often do not apply to other catalysts. Properties such as strength of basic sites, ionic radius, and electronegativity have been found to correlate with performance results such as activity or selectivity. | Anthony R.Richard Maohong Fan | 2018 | Journal of Rare Earths2018，36，11： | 6 |
| 11 | Evaluation of natural goethite on the removal of arsenate and selenite from water显示文摘Elevated arsenic and selenium concentrations in water cause health problems to both humans and wildlife. Natural and anthropogenic activities have caused contamination of these elements in waters worldwide, making the development of efficient cost-effective methods in their removal essential. In this work, removal of arsenate and selenite from water by adsorption onto a natural goethite(α-FeO OH) sample was studied at varying conditions. The data was then compared with other arsenate, selenite/goethite adsorption systems as much of literature shows discrepancies due to varying adsorption conditions. Characterization of the goethite was completed using inductively coupled plasma mass spectrometry, X-ray diffraction, Fouriertransform infrared spectroscopy, scanning electron microscopy, and Brunauer–Emmett–Teller surface area analysis. Pseudo-first order(PFO) and pseudo-second order(PSO) kinetic models were applied; including comparisons of different regression methods. Various adsorption isotherm models were applied to determine the best fitting model and to compare adsorption capacitates with other works. Desorption/leaching of arsenate and selenite was studied though the addition of phosphate and hydroxyl ions. Langmuir isotherm modeling resulted in maximum adsorption capacities of 6.204 and 7.740 mg/g for arsenate and selenite adsorption,respectively. The PSO model applied with a non-linear regression resulted in the best kinetic fits for both adsorption and desorption of arsenate and selenite. Adsorption decreased with increasing pH. Phosphate induced desorption resulted in the highest percentage of arsenate and selenite desorbed, while hydroxide induced resulted in the fastest desorption kinetics. | Andrew T.Jacobson Maohong Fan | 2019 | Journal of Environmental Sciences2019，31，2： | 5 |
| 12 | Mechanism and catalytic performance for direct dimethyl ether synthesis by CO2 hydrogenation over CuZnZr/ferrierite hybrid catalyst显示文摘Direct synthesis of dimethyl ether(DME)by CO2 hydrogenation has been investigated over three hybrid catalysts prepared by different methods:co-precipitation,sol-gel,and solid grinding to produce mixed Cu,ZnO,ZrO2 catalysts that were physically mixed with a commercial ferrierite(FER)zeolite.The catalysts were characterized by N2 physisorption,X-ray diffraction(XRD),transmission electron microscopy(TEM),X-ray photoelectron spectroscopy(XPS),temperature programmed desorption of CO2(CO2-TPD),temperature programmed desorption of NH3(NH3-TPD),and temperature programmed H2 reduction(H2-TPR).The results demonstrate that smaller CuO and Cu crystallite sizes resulting in better dispersion of the active phases,higher surface area,and lower reduction temperature are all favorable for catalytic activity.The reaction mechanism has been studied using in situ diffuse reflectance infrared Fourier transform spectroscopy(DRIFTS).Methanol appears to be formed via the bidentate-formate(b-HCOO)species undergoing stepwise hydrogenation,while DME formation occurs from methanol dehydration and reaction of two surface methoxy groups. | Qingtao Sheng Run-Ping Ye Weibo Gong Xiufeng Shi Bang Xu Morris Argyle Hertanto Adidharma Maohong Fan | 2020 | Journal of Environmental Sciences2020，32，6： | 2 |
| 13 | Adsorbents for capturing mercury in coal-fired boiler flue gas显示文摘 | Hongqun Yang Zhenghe Xu Maohong Fan Alan E. Bland Roddie R. Judkins | 2007 | Journal of Hazardous Materials2007，，1： | 2 |
| 14 | Ethane dehydrogenation over the g-C_(3)N_(4)supported metal singleatom catalysts to enhance reactivity and coking-resistance ability显示文摘Ethane dehydrogenation(EDH)to produce ethylene requires high operating temperature to achieve satisfactory ethylene yield,however,this process leads to coke formation and catalyst deactivation.Here,an active site isolation strategy was employed to inhibit side reaction and coke formation over fifteen types of metal single-atom metal/graphitic carbon nitride(M/g-C_(3)N_(4))catalysts.Density functional theory(DFT)calculations completely describe reaction network of ethane dehydrogenation.Onlattice kinetic Monte Carlo simulations were carried out to evaluate catalytic performance under the realistic conditions.The Co/g-C_(3)N_(4),Rh/g-C_(3)N_(4),Ni/g-C_(3)N_(4)catalysts were screened out to exhibit higher C_(2)H_(4)(g)formation activity and C_(2)H_(4)(g)selectivity close to or equal to 100%.The low reactant partial pressure 0%–5%at atmospheric pressure facilitates ethane dehydrogenation,and the appropriate temperatures over Co/g-C_(3)N_(4),Rh/g-C_(3)N_(4),Ni/g-C_(3)N_(4)catalysts are 673.15,723.15,723.15 K,respectively.Especially,Co/g-C_(3)N_(4)catalyst presents the highest C_(2)H_(4)(g)formation activity,attributing to the appropriate antibonding strength between C atom and metal single-atom.Further,a simple descriptor,the reaction energy of C_(2)H_(5)*dehydrogenation to C_(2)H_(4)*,was proposed to quantitatively and quickly evaluate C_(2)H_(4)(g)formation activity.The present study laid a solid foundation for efficient design and development of single-atom catalysts with high-performance for selective dehydrogenation of alkanes. | Yuan Zhang Baojun Wang Maohong Fan Lixia Ling Riguang Zhang | 2023 | Nano Research2023，16，5： | 2 |
| 15 | Factors affecting the direct mineralization of CO_2 with olivine显示文摘Olivine, one of the most abundant minerals existing in nature, is explored as a CO2 carbonation agent for direct carbonation of CO2 in flue gas. Olivine based CO2 capture is thermodynamically favorable and can form a stable carbonate for long-term storage. Experimental results have shown that water vapor plays an important role in improving CO2 carbonation rate and capacities. Other operation conditions including reaction temperature, initial CO2 concentration, residence time corresponding to the flow rate of CO2 gas stream, and water vapor concentration also considerably affect the performance of the technology. | Soonchul Kwon Maohong Fan Herbert F. M. DaCosta Armistead G. Russell | 2011 | Journal of Environmental Sciences2011，23，8： | 2 |
| 16 | Improved methanol synthesis performance of Cu/ZnO/Al_(2)O_(3)catalyst by controlling its precursor structure显示文摘Methanol,a versatile chemical,fuel additive and potential H_(2) carrier,has attracted great attention.Despite of the wide industrialization,improvement of Cu-based methanol-synthesis catalysts is highly anticipated.Accordingly,a series of Cu/ZnO/Al_(2)O_(3) with designed precursor structures were prepared,and its structure-function relationship was investigated to make progress on this area.Results showed the catalyst derived from highly zinc-substituted malachite demonstrated the best catalytic performance in this work.It was found that the well-behaved catalyst possessed relatively high Cu specific surface area and exposed Cu concentration,and the well Cu/ZnO synergy.CuZn alloy was found by In-situ XRD tests,and its effect on the catalyst's thermostability was discussed.Fractional precipitation,which facilitated the Cu^(2+) substitution by Zn^(2+) in malachite lattice,could be an efficient preparation method of the Cu/ZnO/Al_(2)O_(3) catalyst. | Fan Zhang Xiaoying Xu Zhengpu Qiu Bo Feng Yuan Liu Aihua Xing Maohong Fan | 2022 | Green Energy & Environment2022，7，4： | 2 |
| 17 | Shape-tailorable amine grafted silica aerogel microsphere for CO_(2) capture显示文摘The purpose of this study was to prepare a proof-of-concept CO_(2) adsorbing material based on a new amine grafted silica aerogel microsphere(AGSAM)that could be used on both fixed and fluidized beds.A low-cost water glass and environment-friendly water were used as precursor and solvent of the silica aerogel,respectively.The silica aerogel microsphere(SAM)was prepared by dropping the siliceous solution into hot oil bath.The effect of the pH value of the siliceous solution,stirring speed and stirring paddle position on the sphericity and size of the SAM was investigated.The SAM with good sphericity was obtained when the pH value was 5.69–5.79.The mean diameter of the SAM decreased from 5 to 1 mm when the stirring speed increased from 1000 to 2000 rpm.The SAM with excellent sphericity was prepared when the paddle was placed on the top of the oil bath.When the paddle was placed at the middle and bottom of the oil bath,some liquid drops aggregated together and formed large aggregations.AGSAM was obtained by grafting the amine groups onto the framework of the silica gel microsphere.The CO2 adsorption capacity of the AGSAM was 1.04 mmol g^(-1) with 1%CO2 at 300 mL min^(-1).The AGSAM with 4,3.2,2 and 1 mm in diameters had the fluidizing velocities of 0.531,0.425,0.265 and 0.159 m s^(-1),respectively.The AGSAM with different sizes met different fluidizing conditions. | Xing Jiang Jian Ren Yong Kong Zhiyang Zhao Xiaodong Shen Maohong Fan | 2020 | Green Chemical Engineering2020，1，2： | 2 |
| 18 | Abatement of SO_2–NOx binary gas mixtures using a ferruginous active absorbent:Part I. Synergistic effects and mechanism显示文摘A novel ferruginous active absorbent, prepared by fly ash, industrial lime and the additive Fe(VI), was introduced for synchronous abatement of binary mixtures of SO2–NOx from simulated coal-fired flue gas. The synergistic action of various factors on the absorption of SO2 and NOx was investigated. The results show that a strong synergistic effect exists between Fe(VI) dose and reaction temperature for the desulfurization. It was observed that in the denitration process, the synergy of Fe(VI) dose and Ca/(S + N) had the most significant impact on the removal of NO, followed by the synergy of Fe(VI) and reaction temperature, and then the synergy of reaction temperature and flue gas humidity. A scanning electron microscope(SEM) and an accessory X-ray energy spectrometer(EDS)were used to observe the surface characteristics of the raw and spent absorbent as well as fly ash. A reaction mechanism was proposed based on chemical analysis of sulfur and nitrogen species concentrations in the spent absorbent. The Gibbs free energy, equilibrium constants and partial pressures of the SO2–NOx binary system were determined by thermodynamics. | Yinghui Han Xiaolei Li Maohong Fan Armistead G.Russell Yi Zhao Chunmei Cao Ning Zhang Genshan Jiang | 2015 | Journal of Environmental Sciences2015，27，4： | 2 |
| 19 | Adsorbents for capturing mercury in coal-fired boiler flue gas显示文摘 | Yang Hongqun Xu Zhenghe Fan Maohong | 2007 | Journal of Hazardous Materials2007，146，12： | 1 |
| 20 | Comparison of corrosivity of polymeric sulfate ferric and ferric chloride as coagulants in water treatment 显示文摘 | Shi Yonghui Fan Maohong Brown R C | 2004 | Chemical Engineering and processing2004，43，8： | 1 |
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