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| 1 | Hierarchical Ag-SiO_2@Fe_3O_4magnetic composites for elemental mercury removal from non-ferrous metal smelting flue gas显示文摘Hierarchical Ag-SiO_2@Fe_3O_4 magnetic composites were selected for elemental mercury(Hg^0) removal from non-ferrous metal smelting flue gas in this study. Results showed that the hierarchical Ag-SiO_2@Fe_3O_4 magnetic composites had favorable Hg^0 removal ability at low temperature. Moreover, the adsorption capacity of hierarchical magnetic composite is much larger than that of pure Fe_3O_4 and SiO_2@Fe_3O_4. The Hg^0 removal efficiency reached the highest value as approximately 92% under the reaction temperature of 150°C, while the removal efficiency sharply reduced in the absence of O_2. The characterization results indicated that Ag nanoparticles grew on the surface of SiO_2@Fe_3O_4 support. The large surface area of SiO_2 supplied efficient reaction room for Hg and Ag atoms. Ag–Hg amalgam is generated on the surface of the composites. In addition, this magnetic material could be easily separated from fly ashes when adopted for treating real flue gas, and the spent materials could be regenerated using a simple thermal-desorption method. | Yongpeng Ma Bailong Mu Xiaojing Zhang Hongzhong Zhang Haomiao Xu Zan Qu Li Gao | 2019 | Journal of Environmental Sciences2019，31，5： | 7 |
| 2 | Absorption characteristics of elemental mercury in mercury chloride solutions显示文摘Elemental mercury(Hg0) in flue gases can be efficiently captured by mercury chloride(Hg Cl2) solution. However, the absorption behaviors and the influencing effects are still poorly understood. The mechanism of Hg0 absorption by Hg Cl2 and the factors that control the removal were studied in this paper. It was found that when the mole ratio of Cl-to Hg Cl2 is 10:1, the Hg0 removal efficiency is the highest. Among the main mercury chloride species,Hg Cl3-is the most efficient ion for Hg0 removal in the Hg Cl2 absorption system when moderate concentrations of chloride ions exist. The Hg0 absorption reactions in the aqueous phase were investigated computationally using Moller–Plesset perturbation theory. The calculated Gibbs free energies and energy barriers are in excellent agreement with the results obtained from experiments. In the presence of SO32-and SO2, Hg2+reduction occurred and Hg0 removal efficiency decreased. The reduced Hg0 removal can be controlled through increased chloride concentration to some degree. Low p H value in Hg Cl2 solution enhanced the Hg0 removal efficiency, and the effect was more significant in dilute Hg Cl2 solutions. The presence of SO42-and NO3-did not affect Hg0 removal by Hg Cl2. | Yongpeng Ma Haomiao Xu Zan Qu Naiqiang Yan Wenhua Wang | 2014 | Journal of Environmental Sciences2014，26，11： | 4 |
| 3 | Utilization of aluminum hydroxide waste generated in fluoride adsorption and coagulation processes for adsorptive removal of cadmium ion显示文摘尽管基于 Al 的凝结和吸附过程为氟化物(F) 移动被证明高度有效,二个过程两个都产生大量艾尔(哦)3 固体废物包含 F (艾尔(哦)3-F) 。这研究试图调查利用艾尔的可行性(哦) 在艾尔产生的 3-F (哦)3 吸附(艾尔(哦)3-F 广告 ) 和凝结(艾尔(哦)3-F 为镉离子(Cd (II )) 的吸附的 coag ) 。艾尔的吸附能力(哦)3-F 广告 和艾尔(哦)3-F 为 Cd (II ) 的 coag 作为太古的铝氢氧化物的类似(艾尔(哦) 具有 24.39 和 19.90 mg 映慬Р的 3), | Jiawei JU Ruiping LIU Zan HE Huijuan LIU Xiwang ZHANG Jiuhui QU | 2016 | Frontiers of Environmental Science & Engineering2016，10，3： | 2 |
| 4 | Synthesis,characterization and experimental investigation of Cu-BTC as CO_2 adsorbent from flue gas显示文摘Porous Cu-BTC material was synthesized by the solvothermal method.Powder X-ray diffraction(PXRD) was used to test the phase purity of the synthesized material and investigate its structural stability under the influence of flue gas components.The thermal stability of the material was determined through thermal gravimetric(TG) analysis.Scanning electron microscopy(SEM) was employed to study the microstructure of the material.Cu-BTC was demonstrated not only to have high CO 2 adsorption capacity but also good selectivity of CO 2 over N 2 by means of packed bed tests.The adsorption capacity of Cu-BTC for CO 2 was about 69 mL/g at 22°C.The influence of the main flue gas components on the CO 2 capacity of the material were discussed as well. | Jiangkun Xie Naiqiang Yan Zan Qu Shijian Yang | 2012 | Journal of Environmental Sciences2012，24，4： | 2 |
| 5 | Enhanced simultaneous absorption of NO_(x) and SO_(2) in oxidation-reduction-absorption process with a compounded system based on Na_(2)SO_(3)显示文摘Oxidation of sulfite and competitive absorption existed in Na_(2)SO_(3) solution for simultaneous removal of NO_(x) and SO_(2),inhibited the long-term high-efficiency when used for practical applications.A matching strategy was developed to solve these problems.Antioxidants combination was used to retard the oxidation of antioxidant and enhance inhibition of S(IV)(tetravalent sulfur)oxidation.Hydroquinone(HQ)and sodium thiosulfate(ST)showed a positive synergistic effect on inhibition of S(IV)oxidation.When SO_(2) concentration was 500 and 2000 ppmV,the addition of 0.1 wt.%HQ and 1 wt.%ST decreased the percentage of S(IV)oxidized by oxygen by over 30%and 40%,respectively.Alkali(Na_(2)CO_(3))alleviated the competitive absorption between NO_(x) and SO_(2).Moreover,Na_(2)CO_(3) exhibited an enhancement effect on the absorption of NO_(x) and SO_(2) when coupled with anti-oxidants.While the increase of oxygen pressure accelerated the oxidation of S(IV),the anti-oxidants can retard the oxidation.The measurement of pH suggested the removal efficiency of NO_(x) highly depended on SO_(3)^(2-) concentration rather than pH.The further investigation of the mechanism suggested the match effect was related to the interaction between ST and the intermediate product of HQ.The match strategy holds a potential for application of SO_(3)^(2-) to denitration. | Sichao Li Wenjun Huang Haomiao Xu Kai Liu Jia-nan Wang Yaning Sun Zan Qu Naiqiang Yan | 2022 | Journal of Environmental Sciences2022，34，1： | 2 |
| 6 | Catalytic oxidation of ele- mental mercury over the modified catalyst Mn/T-A1203 at lower temperatures 显示文摘 | Li Jianfeng Yan Naiqiang Qu Zan | 2010 | Environmental Science Technology2010，44，1： | 1 |
| 7 | Catalytic Ox- idation of Elemental Mercury over the Modified Catalyst Mn/a-A1203 at Lower Temperatures 显示文摘 | LI Jianfeng YAN Naiqiang QU Zan | 2009 | Environmental Science & Technology2009，44，1： | 1 |
| 8 | Catalytic oxidation of elemental mercury over the modified catalyst Mn/ct-A1203 at lower temperature 显示文摘 | LI Jianfeng YAN Naiqiang QU Zan | 2010 | Environmental Science & Technology2010，44，： | 1 |
| 9 | Probing the active sites of 2D nanosheets with Fe-N-C carbon shell encapsulated Fe_(x)C/Fe species for boosting sodium-ion storage performances显示文摘Developing stable but high active metal-nitrogen-carbon(M-N-C)-based hard carbon anode is a promising way to be the alternatives to graphene and blank hard carbon for sodium-ion batteries(SIBs),requiring the precise tailoring of the electronic structure for optimizing the Na+intercalation behavior,yet is greatly challenging.Herein,Fe-N-C graphitic layer-encapsulating Fe3C species within hard carbon nanosheets(Fe-N-C/Fe3C@HCNs)are rationally engineered by pyrolysis of self-assembled polymer.Impressively,the Fe-N-C/Fe3C@HCNs exhibit outstanding rate capacity(242 mAh·g^(−1)at 2,000 mA·g^(−1)),which is 2.1 and 4.2 times higher than that of Fe-N-C and N-doped carbon(N-C),respectively,and prolonged cycling stability(176 mAh·g^(−1)at 2,000 mA·g^(−1)after 2,000 cycles).Theoretical calculations unveil that the Fe3C species enhance the electronic transfer from Na to Fe-N-C,resulting in the charge redistribution between the interfaces of Fe3C and Fe-N-C.Thus,the optimized adsorption behavior towards Na+reduces the thermodynamic energy barriers.The synergistic effect of Fe3C and Fe-N-C species maintains the structural integrity of electrode materials during the sodiation/desodiation process.The in-depth insight into the advanced Na+storage mechanisms of Fe3C@Fe-N-C offers precise guidance for the rational establishment of confinement heterostructures in SIBs. | Huicong Xia Pengfei Yuan Lingxing Zan Gan Qu Yunchuan Tu Kaixin Zhu Yifan Wei Zeyu WeiFangying Zheng Mo Zhang Yongfeng Hu Dehui Deng Jianan Zhang | 2022 | Nano Research2022，15，8： | 1 |
| 10 | Investiga- tion on mercury removal method from flue gas in the presence of sulfur dioxide显示文摘 | MA Yong-peng QU Zan XU Hao-miao | 2014 | Journal of Hazardous Ma- terials2014，279，： | 1 |
| 11 | Sn - Mn binary metal oxides as non-carbon sorbent for mercury removal in a wide-temperature window 显示文摘 | XIE Jiangkun XU Haomiao QU Zan | 2014 | Journal of Colloid and Inter- face Science2014，428，： | 1 |
| 12 | Catalytic oxidation of ele- mental mercury over the modified catalyst Mn/γ-Al2O3 at low- er temperatures 显示文摘 | Li Janfeng Yan Naiqiang Qu Zan | 2010 | Environmental Science and Technology2010，44，： | 1 |
| 13 | Absorption characteristics of elemental mercury in mercury chloride solutions 显示文摘 | Yongpeng Ma l-Iaomiao Xu Zan Qu Naiqiang Yan Wenhua Wang | 2008 | Environmental Science & Technology2008，42，16： | 1 |
| 14 | The role of iodine monochloride for the oxidation of elemental mercury显示文摘 | QU Zan YAN Naiqiang LIU Ping | 2010 | Journal of Hazardous Materials2010，183，123： | 1 |
| 15 | Removal of mercury from flue gas from nonferrous metal smelting, by use of mercury chloride solution, and mechanisms of inhibition by sulfur dioxide显示文摘 | Yongpeng Ma Haomiao Xu Zan Qu Naiqiang Yan Wenhua Wang | 2015 | Research on Chemical Intermediates2015，41，： | 1 |
| 16 | Investigation on mercury removal method from flue gas in the presence of sulfur dioxide显示文摘 | MA Yongpeng QU Zan XU Haomiao | 2014 | Journal of Hazardous Materials2014，279，： | 1 |
| 17 | The performance of iodine on the removal of elemental mercury from the simulated coal-fired flue gas显示文摘 | Yao Chi Naiqiang Yan Zan Qu Shaohua Qiao Jinping Jia | 2009 | Journal of Hazardous Materials2009，，2： | 1 |
| 18 | Removal of elemental mercury with Mn/Mo/Ru/Al2O3 membrane catalytic system显示文摘 | Yongfu GUO Naiqiang YAN Ping LIU Shijian YANG Juan WANG Zan QU | 2013 | Frontiers of Environmental Science & Engineering2013，7，3： | 1 |
| 19 | The performance of iodine on the removal of elemental mercury from the simulated coal-fired flue gas 显示文摘 | Chi Yao Yan Naiqiang Qu Zan | 2009 | Journal of Hazardous Materialsl2009，66，： | 1 |
| 20 | Surface protection method for the magnetic core using covalent organic framework shells and its application in As(Ⅲ)depth removal from acid wastewater显示文摘Fe_(3)O_(4)-based materials are widely used for magnetic separation from wastewater.However,they often suffer from Fe-leaching behavior under acidic conditions,decreasing their ac-tivity and limiting sustainable practical applications.In this study,covalent organic frame-works(COFs)were used as the shell to protect the Fe_(3)O_(4) core,and the Fe_(3)O_(4)@COF core-shell composites were synthesized for As(Ⅲ)removal from acid wastewater.The imine-linked COFs can in situ grow on the surface of the Fe_(3)O_(4) core layer by layer with[COFs/Fe_(3)O_(4)]mol ratio of up to 2∶1.The Fe-leaching behavior was weakened over a wide pH range of 1-13.Moreover,such composites keep their magnetic characteristic,making them favorable for nanomaterial separation.As(Ⅲ)batch adsorption experiments results indicated that,when COFs are used as the shell for the Fe_(3)O_(4) core,a balance between As(Ⅲ)removal efficiencies and the thickness of the COF shell exists.Higher As(Ⅲ)removal efficiencies are obtained when the[COFs/Fe_(3)O_(4)]mol ratios were<1.5∶1,but thicker COF shells were not beneficial for As(Ⅲ)removal.Such composites also exhibited better As(Ⅲ)removal performances in the pH range of 1-7.Over a wide pH range,the zeta potential of Fe_(3)O_(4)@COF core-shell compos-ites becomes more positive,which benefits the capture of negative arsenic ions.In addition,thinner surface COFs were favorable for mass transfer and facilitating the reaction of Fe and As elements.Our study highlights the promise of using COFs in nanomaterial surface protection and achieving As(Ⅲ)depth removal under acidic conditions. | Wenjun Huang Haomiao Xu Xiaoshuang Liu Longlong Wang Shutang Li Leipeng Ji Zan Qu Naiqiang Yan | 2022 | Journal of Environmental Sciences2022，34，5： | 0 |
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