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| 1 | Single‑Atom Cobalt‑Based Electrochemical Biomimetic Uric Acid Sensor with Wide Linear Range and Ultralow Detection Limit显示文摘Uric acid(UA)detection is essential in diagnosis of arthritis,preeclampsia,renal disorder,and cardiovascular diseases,but it is very challenging to realize the required wide detection range and low detection limit.We present here a single-atom catalyst consisting of Co(Ⅱ)atoms coordinated by an average of 3.4 N atoms on an N-doped graphene matrix(A-Co-NG)to build an electrochemical biomimetic sensor for UA detection.The A-Co-NG sensor achieves a wide detection range over 0.4-41,950μM and an extremely low detection limit of 33.3±0.024 nM,which are much better than previously reported sensors based on various nanostructured materials.Besides,the A-Co-NG sensor also demonstrates its accurate serum diagnosis for UA for its practical application.Combination of experimental and theoretical calculation discovers that the catalytic process of the A-Co-NG toward UA starts from the oxidation of Co species to form a Co^3+-OH-UA*,followed by the generation of Co^3+-OH+^*UA_H,eventually leading to N-H bond dissociation for the formation of oxidized UA molecule and reduction of oxidized Co^3+to Co^2+for the regenerated A-Co-NG.This work provides a promising material to realize UA detection with wide detection range and low detection limit to meet the practical diagnosis requirements,and the proposed sensing mechanism sheds light on fundamental insights for guiding exploration of other biosensing processes. | Fang Xin Hu Tao Hu Shihong Chen Dongping Wang Qianghai Rao Yuhang Liu Fangyin Dai Chunxian Guo Hong Bin Yang Chang Ming Li | 2021 | Nano-Micro Letters2021，13，1： | 2 |
| 2 | Engineering transition metal-based nanomaterials for high-performance electrocatalysis显示文摘Transition metal(TM)based electrocatalysts attract increasing attention in energy conversion reactions,and current effects focus on material engineering strategies to tailor physicochemical properties of TM based electrocatalysts for improved performance.This review provides a summary about the recent advances of engineering TM based nanomaterials for electrocatalytic reactions,which include hydrogen evolution reaction(HER),oxygen evolution reaction(OER),CO2 reduction reaction(CO2RR),and nitrate reduction reaction(NO3RR).We highlight four engineering strategies,namely,size engineering,facet engineering,composition engineering,and crystal structure engineering for TM based electrocatalysts,and pay a special emphasis on exploring the relationship between their physicochemical properties and catalytic activities.We outline the opportunities in this research field,in particular,the strategy of rationally combining in-situ and operando techniques and theoretical predication to design efficient electrocatalysts.Finally,issues that deserve attention and consideration for practical applications are discussed. | Changhong Wang Changming Li Jinlong Liu Chunxian Guo | 2021 | Materials Reports(Energy)2021，1，1： | 2 |
| 3 | Deep-red emitting Mg2Ti04:Mn^(4+)phosphor ceramics for plant lighting显示文摘In this study,deep-red emitting Mg2T i04:Mn4 phosphor ceramics were synthesized by the high temperature solid-state reaction method.The ceramics can be excited by the 465 nm blue light and had a narrow emission with a full width at half maximum(FWMH)value of 31 nm.The peak wavelength was located at 658 nm,which matched the demanded wavelength for photosynthesis.The crystal field strength(Dq)and the Racah parameters(B and C)were estimated by the Tanabe-Sugano diagram.The thermal conductivity of the Mg2Ti(0.999)O4:0.001Mn^(4+)ceramic was 7.535 W/(m·K)at room temperature,which was one order of magnitude higher than that of the traditional packaging method using the silicone gel.A set of phosphor converted LEDs were fabricated by mounting the phosphor ceramics onto the 460 nm blue LED chips and the CIE coordinates can move from the blue region to the purple light region with the thickness of the ceramic increasing.These results indicated that the Mg2Ti04:Mn^(4+)phosphor ceramic was suitable for plant lighting when combined with a blue LED chip. | Zixin WANG Hui LIN Dawei ZHANG Yiming SHEN Yang LI Ruijin HONG Chunxian TAO Zhaoxia HAN Lei CHEN Shengming ZHOU | 2021 | Journal of Advanced Ceramics2021，10，1： | 2 |
| 4 | DNA damage evaluated by γ- H2AX foci formation by a selective group of chemical/ physical stressors 显示文摘 | Zhou Chunxian Li Zhongxiang | 2006 | Mutation Research2006，，： | 1 |
| 5 | Laparoscopic ovarian endometriosis cyst surgery 106cases analysis显示文摘 | Liu Chunxian Li Baosen | 2009 | Journal of Huaxi Medical2009，23，7： | 1 |
| 6 | Surface-mediated iron on porous cobalt oxide with high energy state for efficient water oxidation electrocatalysis显示文摘Surface engineering of active materials to generate desired energy state is critical to fabricate high-performance heterogeneous catalysts.However, its realization in a controllable level remains challenging. Using oxygen evolution reaction(OER) as a model reaction, we report a surface-mediated Fe deposition strategy to electronically tailor surface energy states of porous Co_(3)O_(4)(Fe-pCo_(3)O_(4)) for enhanced activity towards OER. The Fe-pCo_(3)O_(4) exhibits a low overpotential of 280 mV to reach an OER current density of 100 mA cm^(-2), and a fast-kinetic behavior with a low Tafel slop of 58.2 mV dec^(-1), outperforming Co_(3)O_(4)-based OER catalysts recently reported and also the noble IrO_(2). The engineered material retains 100% of its original activity after operating at an overpotential of 350 m V for 100 h. A combination of theoretical calculations and experimental results finds out that the surface doped Fe promotes a high energy state and desired coordination environment in the near surface region, which enables optimized OER intermediates binding and favorably changes the rate-determining step. | Jingsha Li Tao Hu Changhong Wang Chunxian Guo | 2022 | Green Energy & Environment2022，7，4： | 1 |
| 7 | A Review on the Progress of Metal-Organic Frameworks in Electro- chemiluminescenceSensors显示文摘Electrochemiluminescence(ECL)is a powerful technology that is the triple point of chemical,electronic,and optical technologies.The ECL-based sensors attract enormous attention due to the unifying of the advantages of electrochemical and optical sensors.The development of ultrasensitive,rapid,highly specific,and cost-effective ECL sensors for detecting substances with human health and life is critical.Metal-organic frameworks(MOFs)is a kind of molecular crystalline material regarded as a promising candidate for application in ECL sensors after its great improvement because of the improved MOFs with particular merits such as large surface area,tunable pore scale,structural diversity,superior conductivity,water stability,low toxicity,and good biocompatibility.In this review,we emphasize discussing the applications of MOFs for ECL sensing detection of varying targets that are related to human health and life,such as metal ions,small molecules,nucleic acids,proteins,bacteria,and viruses.Then,the relationship between ECL performance and MOFs characters is sprinkled in the discussion of the representative example.Finally,we provide the potential opportunities and challenges faced by MOFs in the realm of ECL sensors,as well as the future perspectives. | Huiping Sun Zuoxi Li Yu Gu Chunxian Guo | 2022 | Chinese Journal of Structural Chemistry2022，41，11： | 1 |
| 8 | Synthesis, aggregation behavior and interfacial activity of branched alkylbenzenesulfonate gemini surfactants显示文摘 | Qun Zhang Maozhang Tian Yuchun Han Chunxian Wu Zhibo Li Yilin Wang | 2011 | Journal of Colloid And Interface Science2011，，2： | 1 |
| 9 | Biomol ecule-assisted synthesis of cobalt sulfide nanowires for appli cation in supercapacitors 显示文摘 | Shujuan Bao Changming Li Chunxian Guo | 2008 | Journal of Power Sources2008，180，67： | 1 |
| 10 | Isolation and characterization of a novel anthocyanin-promoting MYBA gene family in Citrus显示文摘 | Zhijian Li Frederick Gmitter Jude Grosser Chunxian Chen Dennis Gray | 2012 | Tree Genetics & Genomes2012，，4： | 1 |
| 11 | Tuning electrospinning hierarchically porous nanowires anode for enhanced bioelectrocatalysis in microbial fuel cells显示文摘Pore structure plays critical roles in electrode kinetics but very challenging to tailor porous nanowires with rationally distributed pore sizes in a bioelectrochemical system.Herein a hierarchically porous nanowires-material is delicately tuned for an optimal pore structure by adjusting the weight percentage of SiO_(2)-hard template in an electrospinning precursor solution.The asprepared optimal electrospinning nanowires further used as an anode of microbial fuel cells(MFCs),delivering a maximum output power density of 1,407.42 mW·m^(−2)with 4.24 and 10 times higher than that of the non-porous fiber and carbon cloth anode,respectively.The great enhancement is attributed to the rational pore structure which offers the largest surface area while the rich-mesopores well match with the size of electron mediators for a high density of catalytic centers.This work provides thoughtful insights to design of hierarchical porous electrode for high-performance MFCs and other bioelectrochemical system devices. | Shiwei Qian Xiaoshuai Wu Zhuanzhuan Shi Xiaofen Li Xin Sun Yongjia Ma Wei Sun Chunxian Guo ChangMing Li | 2022 | Nano Research2022，15，6： | 0 |
| 12 | Main Components and Antioxidant Activity of Callisia repens Extracts显示文摘To study the main active components and antioxidant activity in vitro of extracts from Callisia repens , the contents of main active components such as total flavonoids, total anthocyanin and total sugar in the extracts were studied by spectrophotometry. The components and content of 18 kinds of metals were determined by ICP-MS mass spectrometry. Finally, the oxidative activity of the extract was evaluated by spectrophotometry. Results showed that the content of flavonoids, the total protein, the total sugar and the total anthocyanin in C. repens extract powder were 2.04%, 1.83%, 55.2% and 7.2%, respectively. Beneficial trace elements such as Ca, Mn, Mg in C. repens extracts were higher, while harmful heavy metals such as Pb, Hg, Ag, Co, Ge were very tiny or not detected at all. The IC 50 of C. repens was 0.265 mg/mL for scavenging DPPH·, and 1.16 mg/mL for scavenging ·OH free radical, the total reducing power of 1 mg extract was equivalent to that of 39 μg of Vc, and the extract showed no regular chelating power to ferrous ions. In conclusion, C. repens extracts have high content of natural active components, but extremely low content of the harmful heavy metals, and C. repens extract has good antioxidant capacity. Its antioxidant activity is realized by a variety of active factors through a synergistic mechanism. Thus, C. repens extract has great potential for developing into functional foods. | Bo LENG Shaoru CAI Xiumin LI Jiafu HUANG Yu XUE Zhichao LIN Wensong CHEN Chunxian LI Yutian PAN | 2019 | Asian Agricultural Research2019，11，7： | 0 |
| 13 | Identification of γ-rays in ^(198)Bi显示文摘Identification of γ-rays in ^(198)Bi￥ZhouXiaohong;SunXiangfu;LetXiangguo;ChenXinfeng;LiuZhong;ZhangYuhu;JinHanjuan;GuoYingxia?.. | Zhou Xiaohong Sun Xiangfu Let Xiangguo Chen Xinfeng Liu Zhong Zhang Yuhu Jin Hanjuan Guo Yingxiang Luo Yiniao Wen Shuxian Yuan Guanjun Li Guangsheng and Yang Chunxian(Departemt of Nuclear Physics,CIAE,Beijing.) | 1994 | IMP & HIRFL Annual Report1994，，0： | 0 |
| 14 | Determination of an Isomeric State in ^(198)Bi显示文摘Determination of an Isomeric State in ^(198)Bi￥ZhouXiaohong;SunXiangfu;LetXiangguo;ChenXinfeng;LiuZhong;ZhangYuhu;JinHanjuan;?.. | Zhou Xiaohong Sun Xiangfu Let Xiangguo Chen Xinfeng Liu Zhong Zhang Yuhu Jin Hanjuan Guo Yingxiang Luo Yisiao Wen Shuxian Yuan Guanjun Li Guangsheng and Yang Chunxian(Department of Nuclear Physics,CLAE,Beijing.) | 1994 | IMP & HIRFL Annual Report1994，，0： | 0 |
| 15 | A core-shell copper oxides-cobalt oxides heterostructure nanowire arrays for nitrate reduction to ammonia with high yield rate显示文摘Electrochemical nitrate reduction to ammonia(NRA) can realize the green synthesis of ammonia(NH3) at ambient conditions, and also remove nitrate contamination in water. However, the current catalysts for NRA still face relatively low NH3yield rate and poor stability. We present here a core-shell heterostructure comprising cobalt oxide anchored on copper oxide nanowire arrays(CuO NWAs@Co_(3)O_(4)) for efficient NRA. The CuO NWAs@Co_(3)O_(4)demonstrates significantly enhanced NRA performance in alkaline media in comparison with plain CuO NWAs and Co_(3)O_(4)flocs. Especially, at-0.23 V vs. RHE, NH_(3) yield rate of the CuO NWAs@Co_(3)O_(4)reaches 1.915 mmol h^(-1)cm^(-2),much higher than those of CuO NWAs(1.472 mmol h^(-1)cm^(-2)), Co_(3)O_(4)flocs(1.222 mmol h^(-1)cm^(-2)) and recent reported Cu-based catalysts.It is proposed that the synergetic effects of the heterostructure combing atom hydrogen adsorption and nitrate reduction lead to the enhanced NRA performance. | Hui Liu Jingsha Li Feng Du Luyun Yang Shunyuan Huang Jingfeng Gao Changming Li Chunxian Guo | 2023 | Green Energy & Environment2023，8，6： | 0 |
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