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| 1 | Amorphous NiO_(n)coupled with trace PtO_(x)toward superior electrocatalytic overall water splitting in alkaline seawater media显示文摘Developing corrosion resistance bifunctional electrocatalysts with high activity and stability toward both hydrogen evolution reaction(HER)and oxygen evolution reaction(OER),especially electrolysis in seawater,is of prime significance but still pressingly challenging.Herein,in-situ introduced PtO_(x)on the derivative amorphous NiO_(n)is prepared via heat treatment of Ni ZIFL nanosheets on nickel foam under low temperature(PtO_(x)-NiO_(n)/NF).The synthesized PtO_(x)-NiO_(n)/NF possesses suprahydrophilic and aerophilic surface,then in favor of intimate contact between the electrode and electrolyte and release of the generated gas bubbles during the electrocatalysis.As a result,the in-situ PtO_(x)-NiO_(n)/NF electrode presents outstanding bifunctional activity,which only requires extremely low overpotentials of 32 and 240 mV to reach a current density of 10 mA·cm^(-2)for HER and OER,respectively,which exceeds most of the electrocatalysts previously developed and even suppresses commercial Pt/C and RuO_(2)electrodes.As for two-electrode cell organized by PtO_(x)-NiO_(n)/NF,the voltages down to 1.57 and 1.58 V are necessary to drive 10 mA·cm^(-2)with remarkable durability in 1 M KOH and alkaline seawater,respectively,along with remarkable stability.Moreover,a low cell voltage of 1.88 V is needed to achieve 1,000 mA·cm^(-2)toward water-splitting under industrial conditions.This study provides a new idea for designing in-situ amorphous metal oxide bifunctional electrocatalyst with strong Pt–support interaction for overall water splitting. | Wenli Yu Hongru Liu Ying Zhao Yunlei Fu Weiping Xiao Bin Dong Zexing Wu Yongming Chai Lei Wang | 2023 | Nano Research2023，16，5： | 2 |
| 2 | Rational adjustment to interfacial interaction with carbonized polymer dots enabling efficient large-area perovskite light-emitting diodes显示文摘Film uniformity of solution-processed layers is the cornerstone of large-area perovskite light-emitting diodes,which is often determined by the‘coffee-ring effect’.Here we demonstrate a second factor that cannot be ignored is the solid-liquid interface interaction between substrate and precursor and can be optimized to eliminate rings.A perovskite film with rings can be formed when cations dominate the solid-liquid interface interaction;whereas smooth and homogeneous perovskite emitting layers are generated when anions and anion groups dominate the interaction.This is due to the fact that the type of ions anchored to the substrate can determine how the subsequent film grows.This interfacial interaction is adjusted using carbonized polymer dots,who also orient the perovskite crystals and passivate their buried traps,enabling a 225 mm^(2) large-area perovskite light-emitting diode with a high efficiency of 20.2%. | Fan Yang Qingsen Zeng Wei Dong Chunyuan Kang Zexing Qu Yue Zhao Haotong Wei Weitao Zheng Xiaoyu Zhang Bai Yang | 2023 | Light(Science & Applications)2023，12，6： | 1 |
| 3 | Skincare plants of the Naxi of NW Yunnan, China显示文摘The Naxi of Northwest Yunnan,China use medicinal plants to treat skin conditions related to traditional lifestyles in extreme environments.However,modernization endangers both the medicinal plants used to treat skin conditions and traditional knowledge.Therefore,investigation and documentation of the medicinal plants used and associated traditional knowledge is necessary.In this study,we conducted an ethnobotanical survey in 12 Naxi communities in Northwest Yunnan.For this purpose,we used semistructured surveys to interview 840 informants from Naxi communities.We used informant consensus factor and use frequency as quantitative indices to evaluate the importance of medicinal plant species.A total of 161 medicinal plant species belonging to 69 families were documented.The highest informant consensus factor(ICF)values were recorded for skin nourishing(ICF?0.849),frostbite and chapped skin(ICF?0.833).These skin treatments are highly related to the environment and lifestyle of Naxi communities.The main active compounds of plants used to treat skin conditions in Naxi communities are known to have skin-treating properties.This study reveals that the skin conditions treated by the Naxi are associated with traditional medicine culture and social economic development.In addition,this study uses ethnobotanical indices to explain how skin condition treatments are linked to the natural environment of Naxi communities. | Yanqiang Zhao Zexing Yang Bayi Lang Manfred Shao Wu Meng Dayuan Xue Lu Gao Lixin Yang | 2020 | Plant Diversity2020，42，6： | 0 |
| 4 | Selective hydroconversion of 5-hydroxymethylfurfural to 2,5-bis(hydroxymethyl)furan using carbon nanotubes-supported nickel catalysts显示文摘2,5-Bis(hydroxymethyl)furan(BHMF)is a high-value,bio-based,rigid diol that resembles aromatic monomers for the production of different polyesters.In this work,a carbon nanotubes(CNTs)-supported nickel catalyst(Ni/CNTs)was prepared and used for the selective hydrogenation of 5-hydroxymethylfurfural(HMF)to BHMF at low hydrogen pressure.The prepared catalyst was analyzed by nitrogen adsorption-desorption isotherms,X-ray diffraction(XRD),and X-ray photoelectron spectroscopy(XPS).According to kinetic studies,the rate constant for BHMF formation is significantly larger than that for the formation of the byproduct,5-methyl furfural(MF).At optimal reaction conditions,conversion and selectivity rates of HMF and BHMF were 99.8%and 95.0%,respectively.The mechanistic study indicated the coexistence of Ni0 and Ni2+species on the catalyst surface affects the catalytic performance.A possible mechanism was proposed to describe the synergetic effects of Ni0 and Ni2+.Furthermore,the catalyst can be easily separated from the reaction mixture for recycling. | Zexing Huang Xiaoao Sun Wenguang Zhao Xiaoting Zhu Zhijuan Zeng Qiong Xu Xianxiang Liu | 2022 | Carbon Resources Conversion2022，5，4： | 0 |
| 5 | Surface/Interface Engineering of Hierarchical MoO_(2)/MoNi_(4)@Ru/RuO_(2)Heterogeneous Nanosheet Arrays for Alkaline Water Electrolysis with Fast Kinetics显示文摘Realizing the hydrogen economy by water electrolysis is an attractive approach for hydrogen production,while the efficient and stable bifunctional catalysts under high current densities are the bottleneck that limits the half-cell reactions of water splitting.Here,we propose an approach of hydrothermal and thermal annealing methods for robust MoO_(2)/MoNi_(4)@Ru/RuO_(2) heterogeneous cuboid array electrocatalyst with multiplying surface-active sites by depositing a monolayer amount of Ru.Benefiting from abundant MoO_(2)/MoNi_(4)@Ru/RuO_(2)heterointerfaces,MoO_(2)/MoNi_(4)@Ru/RuO_(2) heterogeneous cuboid array electrocatalysts effectively drive the alkaline water splitting with superior hydrogen evolution reaction(HER)and oxygen evolution reaction(OER)performances.The synthesized MoO_(2)/MoNi_(4)@Ru/RuO_(2) has high HER activity,which realizes the working overpotentials of 48 mV at 50 mA·cm^(-2),further achieving overpotentials of 230 mv for industry-level 1000 mA·cm^(-2) in alkaline water electrolysis.Moreover,it also showed an enhanced OER activity than commercial RuO_(2) with a small overpotential of 280 mV at 200 mA·cm^(-2) in alkaline media.When building an electrolyzer with electrodes of(-)MoO_(2)/MoNi_(4)@Ru/RuO_(2)IIMo02/MoNig@Ru/RuO_(2)(+),a cell voltage of 1.63 V and 1.75 V is just required to support the current density of 200 mA·cm^(-2) and 500 mA-cm^(-2) in alkaline water electrolysis,much lower than that of the electrolyzer of(-)Pt/CIIRuO_(2)(+).This work demonstrates that MoO_(2)/MoNig@Ru/RuO_(2) heterogeneous nanosheet arrays are promising candidates for industrial water electrolysis applications,providing a possibility for the exploration of water electrolysis with a large currentdensity. | Qiong Zhang Ruixue Zhang Yingxiu Zhao Tiantian Sun Jianyang Gao Guang-Rui Xu Zexing Wu Yu Yang Lei Wang | 2024 | Chinese Journal of Chemistry2024，42，2： | 0 |
| 6 | Boehmite-supported CuO as a catalyst for catalytic transfer hydrogenation of 5-hydroxymethylfurfural to 2,5-bis(hydroxymethyl)furan显示文摘2,5-bis(hydroxymethyl)furan(BHMF)is an important monomer of polyester.Its oxygen-containing rigid ring structure and symmetrical diol functional group establish it as an alternative to petroleum-based monomer with unique advantages for the prodution of the degradable bio-based polyester materials.Herein,we prepared a boehmite-supported copper-oxide catalyst for the selective hydrogenation of 5-hydroxymethylfurfural into BHMF via catalytic transfer hydrogenation(CTH).Further,ethanol successfully replaced conventional high-pressure hydrogen as the hydrogen donor,with up to 96.9% BHMF selectivity achieved under suitable conditions.Through characterization and factor investigations,it was noted that CuO is crucial for high BHMF selectivity.Furthermore,kinetic studies revealed a higher by-product activation energy compared to that of BHMF,which explained the influence of reaction temperature on product distribution.To establish the catalyst structure-activity correlation,a possible mechanism was proposed.The copper-oxide catalyst deactivated following CTH because ethanol reduced the CuO,which consequently decreased the active sites.Finally,calcination of the catalyst in air recovered its activity.These results will have a positive impact on hydrogenation processes in the biomass industry. | Zexing Huang Zhijuan Zeng Xiaoting Zhu Wenguang Zhao Jing Lei Qiong Xu Yongjun Yang Xianxiang Liu | 2023 | Frontiers of Chemical Science and Engineering2023，17，4： | 0 |
| 7 | Heterogeneous integrated phase modulator based on two-dimensional layered materials显示文摘Silicon nitride,with ultralow propagation loss and a wide transparency window,offers an exciting platform to explore integrated photonic devices for various emerging applications.It is appealing to combine the intrinsic optical properties of two-dimensional layered materials with high-quality optical waveguides and resonators to achieve functional devices in a single chip.Here we demonstrate a micro-ring resonator-based phase modulator integrated with few-layer MoS_(2).The ionic liquid is employed directly on the surface of MoS_(2) to form a capacitor configuration.The effective index of the composite MoS_(2)–SiN waveguide can be modulated via adjusting bias voltages to achieve different charged doping induced electro-refractive responses in MoS_(2) film.The maximum effective index modulation of the composite MoS_(2)–SiN waveguide can be achieved to 0.45×10^(−3).The phase tuning efficiency is measured to be 29.42 pm/V,corresponding to a V_(π)L of 0.69 V·cm.Since the micro-ring resonator is designed near the critical coupling regime,the coupling condition between the bus waveguide and micro-ring resonator can also be engineered from under-coupling to over-coupling regime during the charged doping process.That can be involved as a degree of freedom for the coupling tailoring.The ability to modulate the effective index with two-dimensional materials and the robust nature of the heterostructure integrated phase modulator could be useful for engineering reliable ultra-compact and low-power-consumption integrated photonic devices. | HAO CHEN ZEXING ZHAO ZIMING ZHANG GUOQING WANG JIATONG LI ZHENYUAN SHANG MENGYU ZHANG KAI GUO JUNBO YANG PEIGUANG YAN | 2022 | Photonics Research2022，10，6： | 0 |
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