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| 1 | Surface disorder engineering in ZnCdS for cocatalyst free visible light driven hydrogen production显示文摘Metal chalcogenide solid solution,especially ZnCdS,has been intensively investigated in photocatalytic H_(2) generation due to their cost-effective synthetic procedure and adjustable band structures.In this work,we report on the defect engineering of ZnCdS with surface disorder layer by simple room temperature Li-ethylenediamine(Li-EDA)treatment.Experimental results confirm the formation of unusual Zn and S dual vacancies,where rich S vacancies(Vs)served as electron trapping sites,meanwhile Zn vacancies(Vzn)served as hole trapping sites.The refined structure significantly facilitates the photo charge carrier transfer and improves photocatalytic properties of ZnCdS.The disordered ZnCdS shows a highest photocatalytic H_(2) production rate of 33.6 mmol·g^(-1)·h^(-1) under visible light with superior photocatalytic stabilities,which is 7.3 times higher than pristine ZnCdS and 7 times of Pt(1 wt.%)loaded ZnCdS. | Enna Ha Shuhong Ruan Danyang Li Yuanmin Zhu Yanping Chen Jiangyuan Qiu Zhaohui Chen Tingting Xu Jingyun Su Luyang Wang Junqing Hu | 2022 | Nano Research2022，15，2： | 3 |
| 2 | Gut microbiota and probiotics in colon tumorigenesis显示文摘 | Yuanmin Zhu T. Michelle Luo Christian Jobin Howard A. Young | 2011 | Cancer Letters2011，，2： | 1 |
| 3 | Wavelength-Dependent Solar N_(2) Fixation into Ammonia and Nitrate in Pure Water显示文摘Solar-driven N_(2) fixation using a photocatalyst in water presents a promising alternative to the traditional Haber-Bosch process in terms of both energy efficiency and environmental concern.At present,the product of solar N_(2) fixation is either NH_(4)^(+)or NO_(3)^(-).Few reports described the simultaneous formation of ammonia(NH_(4)^(+))and nitrate(NO_(3)^(-))by a photocatalytic reaction and the related mechanism.In this work,we report a strategy to photocatalytically fix nitrogen through simultaneous reduction and oxidation to produce NH_(4)^(+)and NO_(3)^(-)byW18O49 nanowires in pure water.The underlying mechanism of wavelength-dependent N_(2) fixation in the presence of surface defects is proposed,with an emphasis on oxygen vacancies that not only facilitate the activation and dissociation of N_(2) but also improve light absorption and the separation of the photoexcited carriers.Both NH_(4)^(+)and NO_(3)^(-)can be produced in pure water under a simulated solar light and even till the wavelength reaching 730 nm.The maximum quantum efficiency reaches 9%at 365 nm.Theoretical calculation reveals that disproportionation reaction of the N_(2) molecule is more energetically favorable than either reduction or oxidation alone.It is worth noting that the molar fraction of NH_(4)^(+)in the total product(NH_(4)^(+)plus NO_(3)^(-))shows an inverted volcano shape from 365nm to 730 nm.The increased fraction of NO_(3)^(-)from 365 nm to around 427 nm results from the competition between the oxygen evolution reaction(OER)at W sites without oxygen vacancies and the N_(2) oxidation reaction(NOR)at oxygen vacancy sites,which is driven by the intrinsically delocalized photoexcited holes.From 427nm to 730 nm,NOR is energetically restricted due to its higher equilibrium potential than that of OER,accompanied by the localized photoexcited holes on oxygen vacancies.Full disproportionation of N_(2) is achieved within a range of wavelength from~427nm to~515 nm.This work presents a rational strategy to efficiently utilize the photoexcited carriers and optimize the photocatalyst for practical nitrogen fixation. | Wenju Ren Zongwei Mei Shisheng Zheng Shunning Li Yuanmin Zhu Jiaxin Zheng Yuan Lin Haibiao Chen Meng Gu Feng Pan | 2020 | Research2020，，1： | 1 |
| 4 | A novel strategy of fabricated flexible ITO electrode by liquid metal ultra-thin oxide film显示文摘Flexible transparent conductive films are gaining attention day by day over the last few years due to it is a key component of next generation flexible electronics and optoelectronic devices.Indium tin oxide(ITO)as one of the most widely used transparent conductive material is limited by the traditional deposition approach cannot be achieve ultra-thin,which results in its brittle nature.Herein,a novel strategy for fabricating highly transparent conductive films by liquid metal interface phase separation technique based on low-melting liquid metal of InxSn100-x alloy is reported,during the solid-to-liquid phase transition of alloy,the monolayer of surface oxide film segregated with the bulk phase and was printed on the flexible polyethylene-naphthalate(PEN)substrate under the van der Waals.This novel strategy can directly print the ultra-thin self-oxide with the structure of ITO on PEN substrate,with the resulting of transparency over 97.5%and resistivity as low as 0.21 kU cm,providing a new way of lowcost raw ITO material as well as the personalized preparation strategy.The desirable highly transparent conductive films are comparable to recently reported ITO film,together with advantages of pretty steady,make them attractive as various flexible transparent conductive electrodes,for example,an ultra-thin ITO film is developed for luminescent devices. | Yunhui Wu Xufeng Liu Wenjian Wu Yuanmin Zhu Kunquan Li Xiaojing Su Huali Xie Xiaofan Zhang Haitao Xu Kang Wang Zhi-Min Dang | 2022 | Journal of Materiomics2022，8，6： | 1 |
| 5 | A high-precision multi-dimensional microspectroscopic technique for morphological and properties analysis of cancer cell显示文摘Raman and Brillouin scattering are sensitive approaches to detect chemical composition and mechanical elasticity pathology of cells in cancer development and their medical treatment researches.The application is,however,suffering from the lack of ability to synchronously acquire the scattering signals following three-dimensional(3D)cell morphology with reasonable spatial resolution and signal-to-noise ratio.Herein,we propose a divided-aperture laser differential confocal 3D Geometry-Raman-Brillouin microscopic detection technology,by which reflection,Raman,and Brillouin scattering signals are simultaneously in situ collected in real time with an axial focusing accuracy up to 1 nm,in the height range of 200μm.The divided aperture improves the anti-noise capability of the system,and the noise influence depth of Raman detection reduces by 35.4%,and the Brillouin extinction ratio increases by 22 dB.A high-precision multichannel microspectroscopic system containing these functions is developed,which is utilized to study gastric cancer tissue.As a result,a 25%reduction of collagen concentration,42%increase of DNA substances,17%and 9%decrease in viscosity and elasticity are finely resolved from the 3D mappings.These findings indicate that our system can be a powerful tool to study cancer development new therapies at the sub-cell level. | Lirong Qiu Yunhao Su Ke-Mi Xu Han Cui Dezhi Zheng Yuanmin Zhu Lin Li Fang Li Weiqian Zhao | 2023 | Light(Science & Applications)2023，12，6： | 0 |
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