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| 1 | Fabrication of a nano-sized ZSM-5 zeolite with intercrystalline mesopores for conversion of methanol to gasoline显示文摘Carbon deposition during methanol to hydrocarbons leads to the quick deactivation of ZSM-5 catalyst and it is one of the major problems for this technology. Decreasing the crystal size or introducing mesopores into ZSM-5 zeolites can improve its diffusion property and decrease the coke formation. In this paper, nano-sized ZSM-5 zeolite with intercrystalline mesopores combining the mesoporous and nanosized structure was fabricated. For comparison, the mesoporous ZSM-5 and nano-sized ZSM-5 were also prepared. These catalyst samples were characterized by XRD, BET, NH3-TPD, TEM, Py-IR and TG techniques and used on the conversion of methanol to gasoline in a fixed-bed reactor at T = 405 °C, WHSV = 4.74 h-1and P = 1.0 MPa. It was found that the external surface area of the nano-sized ZSM-5 zeolite with intercrystalline mesopores reached 104 m2/g, larger than that of mesoporous ZSM-5(66 m2/g) and nanosized ZSM-5(76 m2/g). Catalytic lifetime of the nano-sized ZSM-5 zeolite with intercrystalline mesopores was 93 h, which was only longer than that of mesoporous ZSM-5(86 h), but shorter than that of nanosized ZSM-5(104 h). Strong acidity promoted the coke formation and thus decreased the catalytic lifetime of the nano-sized ZSM-5 zeolite with intercrystalline mesopores though it presented large external surface that could improve the diffusion property. The special zeolite catalyst was further dealuminated to decrease the strong acidity. After this, its coke formation rate was slowed and catalytic lifetime was prolonged to 106 h because of the large external surface area and decreased weak acidity. This special structural zeolite is a potential catalyst for methanol to gasoline reaction. | Tingjun Fu Jiangwei Chang Juan Shao Zhong Li | 2017 | Journal of Energy Chemistry2017，26，1： | 5 |
| 2 | The spatial variation of soil bacterial community assembly processes affects the accuracy of source tracking in ten major Chinese cities显示文摘Urban soils harbor billions of bacterial cells and millions of species.However,the distribution patterns and assembly processes of bacterial communities remain largely uncharacterized in urban soils.It is also unknown if we can use the bacteria to track soil sources to certain cities and districts.Here,Illumina MiSeq sequencing was used to survey soil bacterial communities from 529 random plots spanning 61 districts and 10 major cities in China.Over a 3,000 km range,community similarity declined with increasing geographic distance(Mantel r=0.62),and community composition was clustered by city(R^(2)=0.50).Within cities(<100 km),the aforementioned biogeographic patterns were weakened.Process analysis showed that homogenizing dispersal and dispersal limitation dominated soil bacterial assembly at small and large spatial scales,respectively.Accordingly,the probabilities of accurately tracking random soil sources to certain cities and districts were 90.0% and 66.7%,respectively.When the tested samples originated from cities that were more than 1,265 km apart,the soil sources could be identified with nearly 100% accuracy.Overall,this study demonstrates the strong distance-decay relationship and the clear geographic zoning of urban soil bacterial communities among cities.The varied importance of different community assembly processes at multiple spatial scales strongly affects the accuracy of microbial source tracking. | Teng Yang Yu Shi Jun Zhu Chang Zhao Jianmei Wang Zhiyong Liu Xiao Fu Xu Liu Jiangwei Yan Meiqing Yuan Haiyan Chu | 2021 | Science China(Life Sciences)2021，64，9： | 4 |
| 3 | N-doped carbon dots coupled NiFe-LDH hybrids for robust electrocatalytic alkaline water and seawater oxidation显示文摘Electrolysis of seawater offers a highly promising and sustainable route to attain carbon-neutral hydrogen energy without demanding on high-purity water resource.However,it is severely limited by the undesirable chlorine oxidation reaction(ClOR)on the anode and the releasing toxic chlorine species,inducing anode corrosion and multiple pollutions to reduce the efficiency and sustainability of this technology.The effective way is to limit the overpotential of oxygen evolution reaction(OER)below 480 mV and thus suppress the ClOR.Herein,we demonstrate that nitrogen-doped carbon dots strongly coupled NiFe layered double hydroxide nanosheet arrays on Ni foam(N-CDs/NiFe-LDH/NF)can efficiently facilitate OER with an ultralow overpotential of 260 mV to deliver the geometric current density of 100 mA·cm^(−2)and a Tafel slope of as low as 43.4 mV·dec−1 in 1.0 M KOH.More importantly,the N-CDs/NiFe-LDH/NF electrode at 100 mA·cm^(−2)shows overpotentials of 285 and 273 mV,respectively,by utilizing 1.0 M KOH with 0.5 M NaCl and 1.0 M KOH with 1.0 M NaCl as the simulated seawater,well avoid triggering ClOR.Notably,despite the complex environment of real seawater,N-CDs/NiFe-LDH/NF still effectively promotes alkaline seawater(1.0 M KOH+seawater)electrolysis with a lifetime longer than 50 and 20 h,respectively,in 1.0 M KOH and alkaline seawater electrolytes.The investigation result reveals that M–N–C bonding generated between N-CDs and NiFe-LDH intrinsically optimizes the charge transfer efficiency,further promoting the OER kinetics. | Peng Ding Haoqiang Song Jiangwei Chang Siyu Lu | 2022 | Nano Research2022，15，8： | 3 |
| 4 | Electrocatalytic water splitting:Mechanism and electrocatalyst design显示文摘Hydrogen energy,a new type of clean and efficient energy,has assumed precedence in decarbonizing and building a sustainable carbon-neutral economy.Recently,hydrogen production from water splitting has seen considerable advancements owing to its advantages such as zero carbon emissions,safety,and high product purity.To overcome the large energy barrier and high cost of water splitting,numerous efficient electrocatalysts have been designed and reported.However,various difficulties in promoting the industrialization of electrocatalytic water splitting remain.Further,as high-performance electrocatalysts that satisfy industrial requirements are urgently needed,a better understanding of water-splitting systems is required.In this paper,the latest progress in water electrolysis is reviewed,and experimental evidence from in situ/operando spectroscopic surveys and computational analyses is summarized to present a mechanistic understanding of hydrogen and oxygen evolution reactions.Furthermore,some promising strategies,including alloying,morphological engineering,interface construction,defect engineering,and strain engineering for designing and synthesizing electrocatalysts are highlighted.We believe that this review will provide a knowledge-guided design in fundamental science and further inspire technical engineering developments for constructing efficient electrocatalysts for water splitting. | Han Wu Qiaoxian Huang Yuanyuan Shi Jiangwei Chang Siyu Lu | 2023 | Nano Research2023，16，7： | 3 |
| 5 | Glutamic acid-assisted hydrothermal recrystallization to configure bamboo-like carbon nanotubes for improved triiodide reduction显示文摘Carbon nanotubes(CNTs)have been far and wide employed as the counter electrodes(CEs)in dyesensitized solar cells because of their individual physical and chemical properties.However,the techniques available now,such as chemical vapor deposition,arc discharge and laser ablation for synthesizing CNTs,commonly suffer from rigorous operations and complicated steps,which make the process difficult to be controlled.Herein,we present a simple and facile glutamic acid-assisted hydrothermal recrystallization strategy to construct bamboo-like CNTs(GHP-BC-x).Generally,the conventional organic dye3,4,9,10-perylene tetracarboxylic dianhydride(PTCDA)is used as a precursor and glutamic acid efficiently promotes the recrystallization of the perylene cores'planarπ-conjugated system in PTCDA under hydrothermal conditions and then self-assembles into one-dimensio nal nano rods with improved crystallization degree,finally resulting in the morphology of bamboo-like CNTs after carbonization.When applied as the counter electrodes,the GHP-BC-3 displays a remarkable power conversion efficiency of8.25%,benefiting from the superb electrical conductivity and mass transfer dynamics,superior to that of Pt CE(7.62%). | Chun Yao Jiangwei Chang Yiwang Ding Chang Yu Jieshan Qiu | 2021 | Chinese Journal of Chemical Engineering2021，34，9： | 0 |
| 6 | Identification and characterization of blocking nanobodies against human CD70显示文摘CD70 is overexpressed in a variety of solid and hematological tumors and plays a role in tumor proliferation and evasion of immune surveillance.Targeting and blocking its binding to the receptor CD27 have the potential to treat CD70-dependent tumors.To generate novel CD70 blocking agents,we screen a human CD70-immunized camel VHH phage display library and isolate two blocking nanobodies against human CD70 targeting different epitopes.Upon enrichment by three rounds of biopanning,two strategies are employed to identify CD70 blockers.One named affinity selection is used for detecting clones with CD70 binding by conventional PE-ELISA.However,no clone with a blocking effect is obtained from 188 enriched clones by this method.The alternative strategy named competitive selection is based on the inhibiting capacity of CD70-CD27 binding by enriched VHHs.By this method,two clones,Nb-2B3 and Nb-3B6,with strong blocking capacity are obtained from 20 enriched VHHs,suggesting the efficiency of this strategy.Furthermore,Nb-2B3 and Nb-3B6 specifically bind to CD70-positive SKOV3 and Raji cells at low concentrations.Meanwhile,Nb-2B3 has no competitive effect on the binding of Nb-3B6 to CD70,and vice versa,indicating that they target two different epitopes on CD70.Our data show that nanobodies Nb-2B3 and Nb-3B6 are potential attractive theranostic agents for CD70-expressing cancers. | Xin Zhang Chang Liu Yuan Xie Qianqian Hu Yuanyuan Chen Jiangwei Li | 2022 | Acta Biochimica et Biophysica Sinica2022，54，10： | 0 |
| 7 | Design strategies towards transition metal single atom catalysts for the oxygen reduction reaction-A review显示文摘The electrochemical oxygen reduction reaction(ORR)is pivotal in energy conversion via a 4e-ORR pathway and green hydrogen peroxide production via 2e-ORR pathway.Transition metal single atom catalysts(TM SACs)have attracted intense attention in recent years for ORR due to their high activity and near maximum metal atom utilization.The future development of TM SACs for ORR requires improved understanding of reaction pathways,since currently the true origin of activity remains contentious owing to the lack of qualitative/quantitative information about active sites.Knowledge-guided design is imperative for the optimization of TM SACs performance in terms of activity and selectivity.This review focuses on the latest progress in the design of TM SACs for ORR,placing particular attention on efforts to elucidate reaction mechanisms.Experimental evidence based on in-situ/operando characterization measurements,along with theoretical predictions,are summarized to deepen understanding of the structure-performance relationships at both atomic and molecular level.Finally,some perspectives are offered relating to the fundamental science needed for TM SACs to find practical application in energy storage and conversion devices.We hope this review will inspire the development of new synthetic routes towards high-performance ORR electrocatalysts for the energy sector. | Yaojia Cheng Hao Wang Haoqiang Song Kan Zhang Geoffrey I.N.Waterhouse Jiangwei Chang Zhiyong Tang Siyu Lu | 2023 | Nano Research Energy2023，2，4： | 0 |
| 8 | Progress on the mechanisms of Ru-based electrocatalysts for the oxygen evolution reaction in acidic media显示文摘Water electrolysis using proton-exchange membranes is one of the most promising technologies for carbon-neutral and sustainable energy production.Generally,the overall efficiency of water splitting is limited by the oxygen evolution reaction(OER).Nevertheless,a trade-off between activity and stability exists for most electrocatalytic materials in strong acids and oxidizing media,and the development of efficient and stable catalytic materials has been an important focus of research.In this view,gaining in-depth insights into the OER system,particularly the interactions between reaction intermediates and active sites,is significantly important.To this end,this review introduces the fundamentals of the OER over Ru-based materials,including the conventional adsorbate evolution mechanism,lattice oxygen oxidation mechanism,and oxide path mechanism.Moreover,the up-to-date progress of representative modifications for improving OER performance is further discussed with reference to specific mechanisms,such as tuning of geometric,electronic structures,incorporation of proton acceptors,and optimization of metal-oxygen covalency.Finally,some valuable insights into the challenges and opportunities for OER electrocatalysts are provided with the aim to promote the development of next-generation catalysts with high activity and excellent stability. | Yuanyuan Shi Han Wu Jiangwei Chang Zhiyong Tang Siyu Lu | 2023 | Journal of Energy Chemistry2023，，10： | 0 |
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