NANOTECHNOLOGY
·
2021
·Vol. 33
·期 9
·095601
·
IF 3.874
Lulu Yu,Min Liu,Yanling Zhang,Yun Ni,Shaobo Wu,Ruijiang Liu
A magnetically induced self-assembly DNAzyme electrochemical biosensor based on gold-modified α-Fe2O3/Fe3O4 heterogeneous nanoparticles was successfully fabricated to detect Nickel(II) (Ni2+). The phase composition and magnetic properties of α-Fe2O3/Fe3O4 heterogeneous nanoparticles controllably prepared by the citric acid (CA) sol–gel method were investigated in detail. The α-Fe2O3/Fe3O4 heterogeneous nanoparticles were modified by using trisodium citrate as reducing agent, and the magnetically induced self-assembly α-Fe2O3/Fe3O4–Au nanocomposites were obtained. The designed Ni2+-dependent DNAzyme consisted of the catalytic chain modified with the thiol group (S1-SH) and the substrate chain modified with methylene blue (S2-MB). The MGCE/α-Fe2O3/Fe3O4–Au/S1/BSA/S2 electrochemical sensing platform was constructed and differential pulse voltammetry was applied for electrochemical detection. Under the optimum experimental parameters, the detection range of the biosensor was 100 pM–10 μM (R2 = 0.9978) with the limit of detection of 55 pM. The biosensor had high selectivity, acceptable stability, and reproducibility (RSD = 4.03%).
✓ 已验证
产品关联
DOI
PubMed
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2020
·Vol. 60
·期 10
·2541-2549
·
IF 1.917
Kailun Zhang,Hongjuan Wu,Ruifang Wu,Guang Yang,Tian Wang,Jixing Xie,Hongqiang Qu
Here, a phosphazene-based flame retardant (PBFA) containing active amine groups was synthesized by hexachlorocyclotriphosphazene and N-aminoethylpiperazine and nickel ion (Ni 2+ ) was chelated to the surface of PBFA (named as PBFA-Ni 2+ ). Incorporation into epoxy resin (EP) with a loading of 6 wt% (named as EP/PBFA-Ni 2+ -6.0), enabled the composite to pass the vertical burning test (UL-94) V 0 rating. Peak heat release rate and the total smoke release of EP/PBFA-Ni 2+ -6.0 were decreased by 41.02% and 22.74% as measured by cone calorimeter tests. The production rate of CO was inhibited when PBFA-Ni 2+ was incorporated into EP.
✓ 已验证
产品关联
DOI
高影响因子
SCIENCE OF THE TOTAL ENVIRONMENT
·
2018
·
IF 4.61
Shuran He,Yongtao Li,Liping Weng,Jinjin Wang,Jinxian He,Yonglin Liu,Kun Zhang,Qihong Wu,Yulong Zhang,Zhen Zhang
In present study, the feasibility of applying a natural adsorbent with Fe 3+ modification (Fe 3+ -modified argillaceous limestone, FAL) on the competitive adsorption of heavy metals (i.e., Cd 2+ , Pb 2+ and Ni 2+ ) was evaluated. The current results revealed an efficient adsorption on Cd 2+ , Pb 2+ and Ni 2+ in mono-metal system. Further experiments demonstrated a high selectivity of Pb 2+ during the competitive adsorption of Cd 2+ , Pb 2+ and Ni 2+ . The adsorption selectivity of the metal ions followed the order of Pb ≫ Cd > Ni. In addition, both pH and ionic strength are important factors affecting the metal adsorptions. It is interestingly that various NOMs (i.e., humic acid (HA) and glycine (Gly)) exerted different effects on the adsorption behaviors, probably due to the different affinities for Pb 2+ , Cd 2+ and Ni 2+ and the redistribution of newly-formed metal-DOM complexes. X-ray photoelectron spectroscopy (XPS) analysis together with X-ray diffraction (XRD) and energy dispersive spectrometer (EDS) analysis revealed that the metal adsorptions were mainly regulated via the synergistic mechanisms of ion exchange by Na + , Ca 2+ , and Al 3+ , precipitation to form CdCO 3 and Pb 2 (OH) 2 (CO 3 ) 2 , as well as complexes of FAL-OPb and FAL-ONi by hydroxyl groups on the surface of FAL. The application of FAL would be a promising option in leading to an efficient heavy metal removal.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Tallat Munir,Jiawei Zhou,Ming Liu,Shiyang Bai,Jihong Sun
A highly effective synthetic clinoptilolite (SCP) was developed and assessed for its potential in the simultaneous removal of Cd 2+ , Ni 2+ , Mn 2+ , Sr 2+ , and Fe 3+ from an aqueous solution. The present work explored the influences of SCP dosage, initial metal ion concentrations, temperature, contact time, and pH value on the adsorption performances of these metal ions. The results revealed exceptionally high adsorption capacities, reaching 2000, 1720, 1875, 1510, and 22 mg/g for Ni 2+ , Fe 3+ , Cd 2+ , Mn 2+ , and Sr 2+ , respectively. The specific surface area of SCP increased from 31.4 to 44.7 m 2 /g after five cycles. The adsorption mechanism and structure assessment were elucidated by XRD patterns and SEM images, showing that the Fe 3+ adsorption conformed to the Langmuir isotherm, while that of Mn 2+ , Cd 2+ , Sr 2+ , and Ni 2+ followed the Freundlich isotherm model with the adsorption kinetics best described by the pseudo-2nd-order kinetic model. Thermodynamic parameters showed endothermic behavior for Cd 2+ , Ni 2+ , Mn 2+ , and Sr 2+ , exothermic for Fe 3+ , and spontaneity for all metals except Sr 2+ . SCP retained over 90 % of its adsorption capacity after five regeneration cycles, maintaining structural integrity under thermal, acidic, and recycling conditions. These findings highlight SCP’s robust characteristics, reusability, and potential for sustainable heavy metal removal from wastewater.
✓ 已验证
产品关联
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2018
·
IF 4.439
Qingfeng Zhou,Yun Gong,Jianhua Lin
In the present work, Ni 2+ -doped (NH 4 ) 2 V 3 O 8 nanoflakes are in situ grown on Ni foam through a facile one-pot hydrothermal technique in a NH 4 VO 3 aqueous solution. The Ni 2+ -doped (NH 4 ) 2 V 3 O 8 @Ni foam composite material can be used as binder- and conductivity agent-free electrode in supercapacitor, it manifests a large specific capacitance of 465.5 F g −1 at a current density of 0.2 A g −1 and a superior rate capability of 317.5 F g −1 at 10 A g −1 , which is beneficial from its three-dimensional porous architecture cross-linked by the ultrathin Ni 2+ -doped (NH 4 ) 2 V 3 O 8 nanoflakes on Ni foam. Meanwhile, the Ni 2+ -doped (NH 4 ) 2 V 3 O 8 @Ni foam//Activated carbon asymmetric supercapacitor can deliver a maximum energy density of 20.1 W h kg −1 at a power density of 752.0 W kg −1 . Significantly, the Ni 2+ -doped (NH 4 ) 2 V 3 O 8 @Ni foam electrode possesses reversible electrochromic behavior, and it shows obvious visible light-driven photoresponse with much higher specific capacitance (645.3 F g −1 at 0.5 A g −1 ) under illumination (650 nm > λ > 350 nm, 100 mW cm −2 ), which is probably associated with the semiconducting characteristics of the spin-polarized (NH 4 ) 2 V 3 O 8 and the quantum confinement effect of the nanoflakes.
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2025
·
IF 7.7
Xiaojing Duan,Jiachen Zhu,Chenyang Li,Huidong Fang,Wanji Zhou,Shiai Xu
A mussel-inspired polydopamine-assisted layer-by-layer assembly combined with a metal-chelating strategy using phytic acid was employed to synthesize a novel multi-level core-shell magnesium carbonate-based flame retardant (AMC@PDA@PA-Ni) for enhancing the fire safety of ethylene vinyl acetate (EVA) copolymers. The incorporation of 50 wt% AMC@PDA@PA-Ni increased the LOI of the EVA composite to 30.3 %, achieving a UL94 V-1 rating. Compared to pristine EVA, the composite exhibited a 63.3 % reduction in peak heat release rate (pHRR) and a 66.7 % decrease in peak smoke release rate (pSPR). At elevated temperatures, the combined effects of AMC's gas-solid phase flame retardancy, the phosphorus-containing flame retardant's quenching action, and the transition metal nickel's catalytic charring capability significantly contributed to the composite's superior fire resistance. Additionally, the tensile strength of the EVA/AMC@PDA@PA-Ni composite increased by 97.6 % relative to EVA/AMC, attributed to the PDA modification, which enhanced filler dispersion and interfacial adhesion. This study introduces a facile and effective strategy for developing bio-based multi-level core-shell hybrid flame retardants with outstanding fire resistance and mechanical strength retention.
✓ 已验证
产品关联
DOI
高影响因子
Advanced Optical Materials
·
2026
·Vol. 14
·期 17
·e71226
·
IF 7.2
Jinwei Liu,Jiaxin Li,Guojun Zheng,Chuan Liao,Jianhong Wu,Jianrong Qiu,Wenge Xiao
Cr 3+ emission can well cover the NIR-I region (700–950 nm), while Ni 2+ emission typically extends across the NIR-II region (1000–1700 nm), making the Cr 3+ –Ni 2+ co-doped phosphors among the most promising ultrabroadband NIR emitters for phosphor-converted light-emitting diodes (pc-LEDs). However, a pronounced gap or even spectral discontinuity between the two emission bands results in a severely imbalanced photon flux across the spectrum, thereby degrading multicomponent spectral detection accuracy and significantly limiting the practical applications of such NIR pc-LED devices. Here, we report a superstoichiometric spinel MgO· n Ga 2 O 3 :Cr 3+ ,Ni 2+ ( n > 1) phosphor, in which the excess Ga 2 O 3 increases the degree of cation inversion to achieve a long-wavelength Cr 3+ emission at 895 nm, substantially elevating the spectral gap height to a state-of-the-art value of ≈36%. Moreover, efficient energy transfer from Cr 3+ to Ni 2+ enables the optimized MgO·1.2Ga 2 O 3 :Cr 3+ ,Ni 2+ phosphor to demonstrate a high internal quantum efficiency of 97% and excellent thermal stability. Finally, the as-fabricated NIR pc-LED delivers an exceptional photoelectric efficiency of 21% at 20 mA and a maximum NIR output power of 62 mW at 350 mA. This work establishes a new pathway toward next-generation compact ultrabroadband NIR pc-LEDs featuring unprecedented spectral flatness and superior optoelectronic performance.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Jingqiu Li,Yuming Xie,Mengjue Cao,Yi Feng,Jianfeng Yao
The metal ion etching induced transformation of zeolitic imidazolate frameworks (ZIFs) to layered double hydroxides (LDHs) is closely related to the etching conditions. Here, by tuning the Ni 2+ etching conditions (e.g., initial Ni 2+ concentration and etching time), Co-ZIF-L templated CoNi-LDH with diverse morphologies and tailorable compositions are obtained and their resultant electrochemical properties are optimized. Mechanism study reveals that the etching conditions significantly affect the disassembling rate of Co-ZIF-L as well as the formation rate of CoNi-LDH, leading to the morphological and compositional variance of etched samples, which further results in their distinct electrochemical activities. The resultant asymmetric supercapacitor assembled with Co-ZIF-L derived CoNi-LDH and activated carbon can achieve a maximum energy density of 77.3 Wh/kg at a power density of 700 W/kg with the capacity retention of 85.7 % after 2000 cycles, superior or comparable to other advanced CoNi-LDH based supercapacitors .
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Riyue Ge,Wenxian Li,Juanjuan Huo,Ting Liao,Ningyan Cheng,Yi Du,Mingyuan Zhu,Ying Li,Jiujun Zhang
Efficient photo-electrocatalysts for hydrogen evolution reaction (HER) are synthesized using a facile one-step hydrothermal method. With metal-ion bridges, highly dispersed molybdenum disulfide (MoS 2 ) nanolayers are vertically grown on the reduced graphene oxide (RGO) to form RGO-M-MoS 2 photocatalysts for HER, where M = Fe 3+ , Co 2+ , Ni 2+ , Cu 2+ and Zn 2+ . The results show that the cross-bridging ions can modulate the MoS 2 growth priority and act as efficient charge transfer channels between RGO and MoS 2 , and combine the advantages of the high conductivity of graphene with the photo-electrochemical activity of MoS 2 . The metal-ion bridged MoS 2 -M-RGO heterostructures demonstrate superior catalytic activity toward hydrogen evolution reaction in acid medium, evidenced by the remarkable higher catalytic current density at low overpotential compared with that of MoS 2 -RGO without metal-ion bridge. This study provides a novel and facile route for establishing efficient composite photo-electrocatalysts for water splitting to generate hydrogen.
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED POWDER TECHNOLOGY
·
2018
·
IF 2.943
Xiaoli Zhou,Qinghua Yang,Huanping Wang,Feifei Huang,Junjie Zhang,Shiqing Xu
Ni doped ZnS nanopowders were synthesized by hydrothermal method. The as-synthesized ZnS nanopowders possessed zinc blende structure with the particle sizes of ∼20 nm, and they display a broad emission band from 400 nm to 700 nm centered at ∼540 nm. The influence of Ni 2+ doping and vacuum annealing on the structure, morphology and optical properties was investigated systematically. The results revealed that the emission peaks are blue shifted with Ni 2+ doping, and the emission peaks of 0.2, 0.4, 0.6, 0.8 and 1.0 mol% Ni 2+ doped ZnS nanopowders are centered at ∼520, ∼ 510, 500, 490 and 470 nm, respectively. While, the zinc blende phase transformed to wurtzite phase when annealing at 600 °C or higher, and the annealed samples exhibited three emission peaks positioned at ∼490, ∼547 and ∼580 nm. The results indicated that the as prepared Ni 2+ -doped ZnS nanopowders have a potential application in LED as light conversion layer.
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Bo-Mei Liu,Xiao-Xuan Guo,Lu-Yu Cao,Lin Huang,Rui Zou,Zhi Zhou,Jing Wang
The development of phosphor-converted light-emitting diodes (pc-LEDs) in the second near-infrared window (NIR-II, 1000–1700 nm) represents an important, newly emerging, and dynamic field in NIR spectroscopy. Unfortunately, lacking efficient NIR-II phosphors that can be excited by commercial blue LED chips impedes NIR spectroscopy applications. Herein, a donor–acceptor strategy is developed by introducing Cr 3+ sensitizers to greatly enhance the blue-light excitation efficiency of NIR-II-emitting MgO:Cr 3+ ,Ni 2+ phosphor. Consequently, a high-efficiency blue-light-excitable MgO:Cr 3+ ,Ni 2+ phosphor that gives a NIR-II emission at 1335 nm with a full width at half-maximum (FWHM) of 235 nm, is demonstrated. The product has a high internal quantum efficiency of 92.7 % and excellent thermal stability, maintaining 83.0 % of the room temperature emission intensity at 150 °C. Excitingly, the fabricated NIR-II pc-LED device shows a high NIR-II optical power (27.4 mW@350 mA). The performances of the achieved NIR-II pc-LED are almost the best results until now. Additionally, multifunctional applications including nondestructive detection and anti-counterfeiting of the NIR-II light source are demonstrated. These results are pretty crucial for the further development of NIR-II spectroscopy and imaging technology.
✓ 已验证
DOI
高影响因子
CHINESE JOURNAL OF STRUCTURAL CHEMISTRY
·
2026
·
IF 10.5
Xingyu Li,Jian Peng,Zihao Xu,Wanyuan Li,Biao Xu,Chunyu Li,Wubin Dai
Simultaneous realizations of high thermal stability and quantum efficiency (QE) in phosphors with near-infrared (NIR) photoluminescence (PL) and long-persistent PL (LPL) attributes are a daunting task. Herein, we have come up with a dual-site co-substitution scheme in Ca 3 Sc 2 Ge 3 O 12 : Cr 3+ /Ni 2+ to concurrently actualize high-quality NIR-I/II (L)PL via either equivalent or aliovalent co-substitution at indirect lattice A/C sites of [Y 3+ + Al 3+ ] or [Y 3+ + Si 4+ ] for [Ca 2+ + Ge 4+ ]. Both Cr 3+ and Ni 2+ are colonized at B site (Sc 3+ ) under weak crystal field environment and emitting continuous PL across NIR-I/II regions via energy transfer from Cr 3+ to Ni 2+ under blue-light excitation. Due to inequivalent replacement of Ni 2+ at Sc 3+ site and consequential production of defects, a charming NIR LPL is also gained. Further incorporation of [Y 3+ + Al 3+ ] unit begets densified robust framework with [Sc(Cr/Ni)O 6 ] octahedral distortion, elucidating the mechanism of improved properties in PL QE (76.23%) and stability (89.5%@423 K). While [Y 3+ + Si 4+ ] modulation in Ca 3 Sc 2 Ge 3 O 12 not only brings rigid structure but also suppresses defects (LPL) because of equivalent triple-unit between Y 3+ /Si 4+ /Ni 2+ and Ca 2+ /Ge 4+ /Sc 3+ . A NIR pc-LED based on the designed phosphor with a commercial 460 nm blue LED chip is fabricated and reveals multi-applications in nondestructive detection, bioimaging, and anticounterfeiting. This work provides new perspectives for developing high-performance NIR-emitting phosphor materials. This study reveals the state-of-the-art researches on both NIR-I/II-emitting (L)PL phosphors with high QE and thermal stability from Cr/Ni-activated in garnet Ca 3 Sc 2 Ge 3 O 12 and their multiple applications in the NIR pc-LED, non-destructive detection, and anticounterfeiting. The proposed A/C-site regulation and ET from Cr to Ni pave a new way to design NIR-I/II phosphor and expands their related optoelectronic applications. Download: Download high-res image (298KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）