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| 1 | Switchable C02 electroreduction via engineering active phases of Pd nanoparticles显示文摘活跃阶段的工程定期被利用在异构的催化作用调节金属 nanoparticles (NP ) 的选择。然而,在 electrocatalysis 的活跃阶段的理解的缺乏为公司 2 electroreduction 妨碍了有效催化剂的发展。此处,我们报导 Pd NP 的活跃阶段的系统的工程,它被利用为公司 2 electroreduction 选择反应小径。在 situ X光检查吸收光谱学,在稀释的 situ 总计思考红外线的光谱学,并且密度功能的理论计算建议吸附氢的 Pd 的形成出现在混合物上-并且一个钯氢化物核心的阶段(在 0.2 V 上面的+ PdH x @PdH x )(对一个可逆的氢电极)经由 HCOO 便于甲酸盐生产*中间,而阶段 Pd 氢化物核心上的金属性的 Pd 表面的形成( PdH x @主要产品,是甲酸盐或公司,能有选择地与高 Faradaic 效率被生产(>90%) 并且在有可伸缩的申请的 0.05 ~ 0.9 V 的潜在的窗户中的集体活动示范。 | Dunfeng Gao Hu Zhou Fan Cai Dongniu Wang Yongfeng Hu Bei Jiang Wen-Bin Cai Xiaoqi Chen Rui Si Fan Yang Shu Miao Jianguo Wang Guoxiong wang Xinhe Bao | 2017 | Nano Research2017，10，6： | 8 |
| 2 | Gas-phase electrocatalytic reduction of carbon dioxide using electrolytic cell based on phosphoric acid-doped polybenzimidazole membrane显示文摘Carbon dioxide transformation to fuels or chemicals provides an attractive approach for its utilization as feedstock and its emission reduction.Herein, we report a gas-phase electrocatalytic reduction of CO_2 in an electrolytic cell, constructed using phosphoric acid-doped polybenzimidazole(PBI) membrane, which allowed operation at 170°C. Pt/C and Pt Mo/C with variable ratio of Pt/Mo were studied as the cathode catalysts. The results showed that Pt Mo/C catalysts significantly enhanced CO formation and inhibited CH_4 formation compared with Pt/C catalyst. Characterization by X-ray diffraction, X-ray photoelectron spectroscopy and transmission electron microscopy revealed that most Mo species existed as MoO_3 in Pt Mo/C catalysts and the interaction between Pt and MoO_x was likely responsible for the enhanced CO formation rate although these bicomponent catalysts in general had a larger particle size than Pt/C catalyst. | Dunfeng Gao Fan Cai Qinqin Xu Guoxiong Wang Xiulian Pan Xinhe Bao | 2014 | Journal of Energy Chemistry2014，23，6： | 2 |
| 3 | Ball-milling MoS_2/carbon black hybrid material for catalyzing hydrogen evolution reaction in acidic medium显示文摘Replacing platinum for catalyzing hydrogen evolution reaction(HER) in acidic medium remains great challenges. Herein, we prepared few-layered Mo S2 by ball milling as an efficient catalyst for HER in acidic medium. The activity of as-prepared Mo S2 had a strong dependence on the ball milling time. Furthermore,Ketjen Black EC 300 J was added into the ball-milled Mo S2 followed by a second ball milling, and the resultant Mo S2/carbon black hybrid material showed a much higher HER activity than Mo S2 and carbon black alone.The enhanced activity of the Mo S2/carbon black hybrid material was attributed to the increased abundance of catalytic edge sites of Mo S2 and excellent electrical coupling to the underlying carbon network. | Jiayuan Li Dunfeng Gao Jing Wang Shu Miao Guoxiong Wang Xinhe Bao | 2015 | Journal of Energy Chemistry2015，24，5： | 1 |
| 4 | Heterogeneous Catalysis for CO_(2) Conversion into Chemicals and Fuels显示文摘Catalytic conversion of CO_(2)into chemicals and fuels is a viable method to reduce carbon emissions and achieve carbon neutrality.Through thermal catalysis,electrocatalysis,and photo(electro)catalysis,CO_(2)can be converted into a wide range of valuable products,including CO,formic acid,methanol,methane,ethanol,acetic acid,propanol,light olefi ns,aromatics,and gasoline,as well as fi ne chemicals.In this mini-review,we summarize the recent progress in heterogeneous catalysis for CO_(2)conversion into chemicals and fuels and highlight some representative studies of diff erent conversion routes.The structure-performance correlations of typical catalytic materials used for the CO_(2)conversion reactions have been revealed by combining advanced in situ/operando spectroscopy and microscopy characterizations and density functional theory cal-culations.Catalytic selectivity toward a single CO_(2)reduction product/fraction should be further improved at an industrially relevant CO_(2)conversion rate with considerable stability in the future. | Dunfeng Gao Wanjun Li Hanyu Wang Guoxiong Wang Rui Cai | 2022 | Transactions of Tianjin University2022，28，4： | 1 |
| 5 | CO2 electrolysis at industrial current densities using anion exchange membrane based electrolyzers显示文摘Significant progress on electrocatalytic CO2 reduction reaction (CO2RR) has been achieved in recent years.However,the research and development of electrolyzer device for CO2RR is scarce.Here we use anion exchange membrane to develop zerogap electrolyzers for CO2RR.The electrochemical properties of the electrolyzers with Pd/C and Cu cathodes are investigated.The Pd/C cathode shows a current density of 200 mA cm^-2with CO Faradaic efficiency of 98%and energy efficiency of 48.8%,while the Cu cathode shows a current density of 350 mA cm^-2with total CO2RR Faradaic efficiency of 81.9%and energy efficiency of 30.5%.This work provides a promising demonstration of CO2 electrolyzer using anion exchange membrane for CO2 electrolysis at industrial current densities. | Pengfei Wei Hefei Li Long Lin Dunfeng Gao Xiaomin Zhang Huimin Gong Guangyan Qing Rui Cai Guoxiong Wang Xinhe Bao | 2020 | Science China Chemistry2020，63，12： | 0 |
| 6 | Amorphous Sn(HPO_(4))_(2)-derived phosphorus-modified Sn/SnO_(x) core/shell catalyst for efficient CO_(2) electroreduction to formate显示文摘Simultaneously achieving high activity,selectivity and stability for electrochemical CO_(2)reduction reaction(CO_(2)RR)remains great challenges.Herein,a phosphorus-modified Sn/Sn Oxcore/shell(P-Sn/SnO_x)catalyst,derived from in situ electrochemical reduction of an amorphous Sn(HPO_(4))_(2) pre-catalyst,exhibits high CO_(2)RR performance.The total Faradaic efficiency(FE)of C_(1) products is close to 100%in a broad potential range from-0.49 to-1.02 V vs.reversible hydrogen electrode,and a total current density of 315.0 m A cm^(-2)is achieved.Moreover,the P-Sn/SnO_(x) catalyst maintains a formate FE of~90%for 120 h.Density functional theory calculations suggest that the phosphorus-modified Sn/SnO_(x) core/shell structure effectively facilitates formate production by enhancing CO_(2)adsorption and improving free energy profile of formate formation. | Chunfeng Cheng Tianfu Liu Yi Wang Pengfei Wei Jiaqi Sang Jiaqi Shao Yanpeng Song Yipeng Zang Dunfeng Gao Guoxiong Wang | 2023 | Journal of Energy Chemistry2023，，6： | 0 |
| 7 | Boosting CO_(2) electroreduction to formate via bismuth oxide clusters显示文摘Supported metal(oxide)clusters,with both rich surface sites and high atom utilization efficiency,have shown improved activity and selectivity for many catalytic reactions over nanoparticle and single atom catalysts.Yet,the role of cluster catalysts has been rarely reported in CO_(2)electroreduction reaction(CO_(2)RR),which is a promising route for converting CO_(2)to liquid fuels like formic acid with renewable electricity.Here we develop a bismuth oxide(BiOn)cluster catalyst for highly efficient CO_(2)RR to formate.The BiOn cluster catalyst exhibits excellent activity,selectivity,and stability towards formate production,with a formate Faradaic efficiency of over 90%at a current density up to 500 mA·cm^(−2)in an alkaline membrane electrode assembly electrolyzer,corresponding to a mass activity as high as 3,750 A·gBi−1.The electrolyzer with the BiOn cluster catalyst delivers a remarkable formate production rate of 0.56 mmol·min−1 at a high single-pass CO_(2)conversion of 44%.Density functional theory calculations indicate that Bi4O_(3)cluster is more favorable for stabilizing the HCOO^(*)intermediate than Bi(001)surface and single site BiC_(4)motif,rationalizing the improved formate production over the BiOn cluster catalyst.This work highlights the great importance of cluster catalysts in activity and selectivity control in electrocatalytic CO_(2)conversion. | Xiaole Jiang Le Lin Youwen Rong Rongtan Li Qike Jiang Yaoyue Yang Dunfeng Gao | 2023 | Nano Research2023，16，10： | 0 |
| 8 | Revealing structure-selectivity correlations in pulsed CO_(2)electrolysis via time-resolved operando synchrotron X-ray studies显示文摘In the context of carbon neutrality,CO_(2)electrolysis powered by renewable energy sources holds great promise in converting CO_(2)to valuable chemicals and fuels.One of the major challenges for practical application of CO_(2)electrolysis is control of selectivity with respect to specific products,especially multicarbon compounds like ethylene and ethanol[1–3].Through applying a series of oxidizing(anodic)and working(cathodic)potential pulses,facilitated C–C coupling,suppressed hydrogen evolution reaction and improved stability have been demonstrated over a group of Cu catalysts[4–7].Yet,mechanistic understandings behind the performance enhancement under dynamic pulsed reaction conditions are still in debate[8]. | Dunfeng Gao | 2022 | Nano Research2022，15，8： | 0 |
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