| 1 | Tuning the dual-active sites of ZIF-67 derived porous nanomaterials for boosting oxygen catalysis and rechargeable Zn-air batteries显示文摘The rational control of the active site of metal-organic frameworks(MOFs)derived nanomaterials is essential to build efficient bifunctional oxygen reduction/evolution reaction(ORR/OER)catalysts.Accordingly,through designing and constructing a Co_(3)O_(4)-Co heterostructure embedded in Co,N co-doped carbon polyhedra derived(Co_(3)O_(4)-Co@NC)from the in-situ compositions of ZIF-67 and cobalt nanocrystals synthesized by the strategy of in-situ NaBH4 reduction,the dual-active site(Co_(3)O_(4)-Co and Co-N_(x))is synchronously realized in a MOFs derived nanomaterials.The formed Co_(3)O_(4)-Co@NC shows excellent bifunctional electrocatalytic activity with ultra-small potential gap(ΔE=E_(j=10)(OER)–E_(1/2)(ORR))of 0.72 V,which surpasses the commercial Pt/C and RuO_(2) catalysts.The theory calculation results reveal that the excellent bifunctional electrocatalytic activity can be attributed to the charge redistribution of Co of Co-N_(x) induced by the synergistic effects of well-tuned active sites of Co_(3)O_(4)-Co nanoparticle and Co-N_(x),thus optimizing the rate-determining step of the desorption of O_(2)^(*)intermediate in ORR and OH^(*)intermediate in OER.The rechargeable Zn-air batteries with our bifunctional catalysts exhibit superior performance as well as high cycling stability.This simple-effective optimization strategy offers prospects for tuning the active site of MOF derived bifunctional catalyst in electrochemical energy devices. | Zeyi Zhang Yangyang Tan Tang Zeng Liyue Yu Runzhe Chen Niancai Cheng Shichun Mu Xueliang Sun | 2021 | Nano Research2021，14，7： | 3 |
| 2 | Development of a high-power blue diode laser for precision vaporization of prostate tissue for the surgical management of benign prostatic hyperplasia显示文摘This paper explores the advancement and application of high-power blue diode lasers in treating benign prostatic hyperplasia(BPH).Addressing the challenges posed by existing techniques,the study focuses on optimizing tissue removal methods.Energy platform for BPH should balance a range of factors,such as operative time,patient conditions,urinary functions,complications,durability,accessibility,and cost,all while prioritizing patient care.Blueray Medical's innovation of high-power blue diode laser systems for BPH surgery is explored,with emphasis on achieving a balance among these considerations.By illustrating the biomedical effects of lasers and their interaction with soft tissues,particularly emphasizing the role of photon absorption by biomolecules and proteins in tissue behavior,this study outlines the advantages of the highpower blue diode laser system.The initial laboratory experiments and clinical results consistently align with our theoretical predictions,especially in terms of tissue vaporization efficiency,tissue coagulation,and bleeding control.In conclusion,blue diode lasers hold potential to enhance surgical outcomes for BPH.Their unique properties offer benefits like improved tissue removal rate and reduced thermal damages.Integrating blue laser technology into BPH protocols could lead to shorter hospital stays,cost savings,and expanded patient eligibility,although rigorous clinical studies are needed to fully understand their benefits and limitations. | Liyue Mu Xiang Zhu Bing Yang Lin Yang Xiaofeng Xu Yongwei Zhao Dalin He | 2023 | UroPrecision2023，1，3： | 0 |
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