JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2019
·
IF 6.361
Houde She,Man Jiang,Pengfei Yue,Jingwei Huang,Lei Wang,Jianzhang Li,Gangqiang Zhu,Qizhao Wang
The performance of BiVO 4 for photoelectrocatalytic (PEC) water decomposition is commonly limited by reaction kinetics. In this work, NiS and CoS nanospheres were respectively loaded on BiVO 4 thin films (NiS/BiVO 4 and CoS/BiVO 4 composites) to improve its reaction kinetics for PEC water decomposition. Both physical and chemical properties of these composites were characterized by XRD , SEM, TEM, PL and UV-DRS. The photoelectric properties of the samples were verified by testing LSV , i-t, EIS and IPCE. The formation of the composites can effectively prevent the recombination of carriers and consequently accelerate the separation of electrons and holes. NiS/BiVO 4 and CoS/BiVO 4 can reach photocurrent of 2.1 mA cm −2 and 2.7 mA cm −2 under light respectively, at 1.23 V vs. RHE, which are 1.75 times and 2.25 times that of BiVO 4 (1.2 mA cm −2 ). The hydrogen production of the NiS/BiVO 4 and CoS/BiVO 4 photoanodes was 4.7 and 7.3 times higher than that of BiVO 4 photoanode, respectively.
研究领域:
材料科学
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能源科学
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产品关联
DOI
PubMed
高影响因子
Advanced Science
·
2022
·Vol. 9
·期 14
·2104927
·
IF 17.521
Yafeng Zhang,Kai Ye,Qianru Liu,Juan Qin,Qike Jiang,Bing Yang,Feng Yin
Structure-controlled Pt-based nanocrystals have the great potential to provide a flexible strategy for improving the catalysis of the oxygen reduction reaction (ORR). Here, a new synthetic approach is developed to tune the 3D structure of Pt-based alloys, and switch a synthetic reaction which produces solid PtCu octahedral stars (OSs) to produce PtCu nested skeleton cubes (NSCs) by simple addition of Ni(acac) 2 . In particular, Ni 2+ -guided anisotropic growth is observed to generate the nested skeleton structure in PtCu NSCs. Ni 2+ , though absent from the nanoalloys, not only endows faster Cu reduction kinetics but also acts as a structure-directing agent. Moreover, it is shown that acetic acid treatment of PtCu NSCs/C exposes Pt-rich surface with a fine-tuned Pt d-band center energy and the reduced Cu leaching, resulting in strikingly high activity and stability. Acid-treated PtCu NSCs/C shows a remarkable ORR mass activity of 5.13 A mg Pt –1 , about 26 times higher than commercial Pt/C catalyst. This catalyst also exhibits excellent stability with a lower activity decay of 11.5% and the negligible variation in structure after 10 000 cycles.
研究领域:
材料科学
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电化学
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产品关联
DOI
PubMed
高影响因子
DALTON TRANSACTIONS
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2024
·Vol. 53
·期 14
·6377-6385
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IF 3.5
Chengping Fang,Shuoheng Wang,Shuai Wei,Qingxian Xu,Zeyu Lyu,Sida Shen,Taixing Tan,Hongpeng You
NIR luminescent materials have garnered widespread attention because of their exceptional properties, with high tissue penetration, low absorption and high signal-to-noise ratio in the field of optical imaging. However, producing nanophosphors with high quantum yields of emitting infrared light with wavelengths above 1000 nm remains a significant challenge. Here, we prepared a nanoscale ZnGa2O4:xCr3+,yNi2+ phosphor with good luminescence performance in near-infrared emission, which was synthesized via a hydrothermal method and subsequent calcination process. By co-doping with Cr3+ and Ni2+, the ZnGa2O4 phosphor shows a strong broadband emission of 1100–1600 nm in the second near-infrared (NIR-II) region, owing to the energy transfer from Cr3+ to Ni2+ with an efficiency up to 90%. Meanwhile, a near-infrared phosphor-conversion LED (NIR pc-LED) device is fabricated based on the ZnGa2O4:0.8%Cr3+,0.4%Ni2+ nanophosphor, which has under 100 mA input current, an output power of 23.99 mW, and a photoelectric conversion efficiency of 7.53%, and can be effectively applied in imaging and non-destructive testing. Additionally, the intensity ratio of INi/ICr of ZnGa2O4:0.8% Cr3+,0.4%Ni2+ with its high sensitivity value of 4.21% K−1 at 453 K under 410 nm excitation, indicates its potential for thermometry application.
研究领域:
材料科学
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光学工程
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生物医学工程
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DOI
高影响因子
ACS Applied Nano Materials
·
2023
·
IF 5.9
Wujiayue Luo,Junjie Chen,Yutong Sun,Zhenglin He,Yunzhang Li,Guosheng Shi
Ultrafast molecular-sieving graphene-based membranes with selective separation of volatile aromatic compounds (VACs) have great potential in environmental protection, reutilization of expensive materials, and industrial separation processes. However, current graphene-based absorbents suffer from slow removal speed and limited adsorption capacity for VACs. Herein, pristine and Ni2+-controlled graphene oxide membranes (GOMs) with a permeance up to ∼8.0 × 10–6 mol m–2 s–1 Pa–1, being 1–2 orders of magnitude higher than those of previously reported membranes. The GOMs selectively separate VACs from N2 is achieved on ceramic substrates via the size-exclusion effect for the first time. At a high VACs feed concentration, such GOMs show high rejection rates of 99.8, 99.4, 95.9, and 97.3% for phenol, benzaldehyde, benzoic acid, and benzylamine, respectively. X-ray diffraction (XRD) results show the two-dimensional (2D) channel size for gas transportation within the GOMs is 0.44 nm, which can reject the transportation of VACs but have no effect on N2. Interestingly, using improved Ni2+-controlled GOMs, the rejection rates of benzoic acid and benzylamine rejection rates increased from 95.9 to 98.6% and from 97.3 to 99.4%, respectively. Our finding provides a fast and efficient way to filter VACs in air and has potential applications in air purification and industrial processes.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
Frontiers in Chemistry
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2018
·
IF 4.155
Jiang Zi-Min,Xu Ting-Ting,Yan Cong-Cong,Ma Cai-Yun,Dai Shu-Ge
Here, we report our finding in the fabrication of novel porous urchin-like Ni2/3Co1/3(CO3)1/2(OH)·0. 11H2O (denoted as NC) nanomaterial composed of numerous nanoneedles through an one-step hydrothermal method, which deliveres a high specific capacity of 318 C g−1 at a current density of 1 A g−1. Moreover, an architectural composite electrode consisting of the porous NC nanoneedles wrapped by reduced graphene oxide (rGO) nanosheets exhibits large specific capacity (431 C g−1 at 1 A g−1), high rate capability and long cycling life (94% capacity retention after 5,000 cycles at 20 A g−1). The presence of rGO in the composite electrode greatly improves the electronic conductivity, providing efficient current collection for fast energy storage.
研究领域:
材料科学
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能源存储
·
纳米技术
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
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2014
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IF 5.9
Yuting Zhang,Dian Li,Meng Yu,Wanfu Ma,Jia Guo,Changchun Wang
Integration of the advantages of immobilized metal-ion affinity chromatography (IMAC) and magnetic microspheres is considered as an ideal pathway for quick and convenient separation of his-tagged proteins, but rare reports concern the natural histidine-rich proteins. In this article, a novel route was presented to fabricate magnetic microspheres composed of a high-magnetic-response magnetic supraparticle (Fe3O4) core and a Ni2+-immobilized cross-linked polyvinyl imidazole (PVIM) shell via reflux-precipitation polymerization. The unique as-prepared Fe3O4/PVIM-Ni2+ microspheres possessed uniform flower-like structure, high magnetic responsiveness, abundant binding sites, and very easy synthesis process. Taking advantage of the pure PVIM-Ni2+ interface and high Ni2+ loading amount, the microspheres exhibited remarkable selectivity, excellent sensitivity, large enrichment capacity, and high recyclability in immobilization and separation of his-tagged recombinant proteins. More interestingly, it was found that the Fe3O4/PVIM-Ni2+ microspheres also showed excellent performance for removal of the natural histidine-rich bovine serum albumin (BSA) from the complex real sample of fetal bovine serum due to the exposed histidine residues. Considering their multiple merits, this new type of Fe3O4/PVIM-Ni2+ nanomaterial displays great potential in enriching low-abundant his-tagged proteins or removing high-abundant histidine-rich natural proteins for proteomic analysis.
研究领域:
生物化学
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材料科学
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生物技术
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分析化学
✓ 已验证
DOI
PubMed
高影响因子
INORGANIC CHEMISTRY
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2026
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IF 4.6
Ze-Jia Shen,Lin Cheng,Xin Hao,Yi-Ming Zhao,Shuaihua Wang,Kai-Yao Wang
The efficient removal of Ni2+ from radioactive wastewater is crucial for environmental protection and nuclear safety, yet current ion exchangers often exhibit limited stability and selectivity. Herein, we report an open-framework gallium–antimony sulfide, K3.6[NH4]0.1[CH3NH3]0.3Ga4SbS9SH·0.9H2O (GaSbS-2K), constructed from supertetrahedral T2-{Ga4S9SH} clusters and asymmetric Sb bridges. Its three-dimensional framework features intersecting chiral channels and tetrahedral voids that facilitate ion diffusion and exchange. GaSbS-2K exhibits rapid Ni2+ adsorption, achieving 67.66% uptake within 2 min and 97.54% removal at equilibrium, with a pseudo-second-order rate constant of 0.318 g mg–1 min–1. The material shows a maximum adsorption capacity of 90.78 ± 2.74 mg g–1 under neutral conditions and remains stable across a wide pH range (3–12). It retains strong selectivity for Ni2+ in the presence of competing ions, maintaining >72% removal even in seawater. The rapid adsorption kinetics enable continuous-flow applications in both fixed-bed columns and composite membranes, achieving >99% removal of Ni2+. Notably, the GaSbS-2K/PTFE membrane with an 80 μm active layer completely removes Ni2+ from 1000 mL of solution at a flux of 1.91 mL min–1 cm–2 with only 0.25 s of contact time. Combined with its facile synthesis, radiation stability, and regenerability, GaSbS-2K represents a promising adsorbent for radionuclide-contaminated wastewater treatment.
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DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2016
·Vol. 41
·期 2
·685-691
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IF 3.277
Kaisi Liu,Bin Yao,Yongfeng Li,Zhanhui Ding,Zhenyu Xiao,Yuhong Jiang,Gang Wang,Daocheng Pan
Cu2CoSnS4 (CCTS) and Cu2NiSnS4 (CNTS) can be regarded as Cu2ZnSnS4 compounds with the Zn2+ replaced by Co2+ and Ni2+, and are alternative absorber materials in thin film solar cells. Here, we fabricated high-quality CCTS and CNTS nanocrystal thin films by employing the ion substitution strategy. We systematically studied the crystal structures, surface morphologies and compositions of the as-prepared and selenized thin films via X-ray diffractometry (XRD), scanning electron microscopy (SEM) and energy dispersive X-ray spectroscopy (EDS). The selenized CCTS and CNTS films showed an obvious phase separation process for the oxidizing reaction of Co2+ and Ni2+ with high-temperature selenium steam, and then formed Cu2Sn(S,Se)3, Co(S,Se)2 and Ni(S,Se)2 compounds. We successfully fabricated photodetector devices using CCTS and CNTS nanocrystal films, and achieved a strong and reversible photoresponse performance.
研究领域:
材料科学
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半导体物理
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薄膜器件
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光电探测
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DOI
高影响因子
Chemistry-An Asian Journal
·
2018
·Vol. 13
·期 6
·672-678
·
IF 3.692
Bo Zhang,Wei-An Li,Yi-Yu Liao,Chen Zhang,Mei-Ling Feng,Xiao-Ying Huang
Graphical Why don′t you give me a nickel? An organically templated three-dimensional Ga-Sb-S compound is reported that exhibits a Ni 2+ ion-exchange property, namely, [CH 3 NH 3 ] 4 Ga 4 SbS 9 QH (Q=S/O) ( 1 ). An open-framework chalcogenidoantimonate, namely, [CH 3 NH 3 ] 4 Ga 4 SbS 9 S 0.28 O 0.72 H ( 1 ), has been solvothermally synthesized and structurally characterized. Interestingly, 1 showed Ni 2+ ion-exchange properties and wide pH resistance, with a maximum exchange capacity of 76.9 mg g −1 . To the best of our knowledge, this is the first example of amine-directed three-dimensional (3D) heterometallic chalcogenidometalates for highly selective Ni 2+ ion capture with a high distribution coefficient ( K d =1.65×10 5 mL g −1 ).
研究领域:
无机化学
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材料科学
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产品关联
DOI
PubMed
高影响因子
Advanced Optical Materials
·
2026
·
IF 7.2
Zhidan Liu,Qiufeng Shi,Lei Wang,Haijie Guo,Dawei Wang,Konstantin V. Ivanovskikh,Jianwei Qiao,Xiao-Jun Wang
Broadband and thermally robust near-infrared (NIR) emitters are essential for advanced photonic applications from night-vision imaging to biological sensing and spectroscopy. However, transition-metal-activated phosphors face an intrinsic coupling between emission bandwidth and thermal stability, with ultrabroad spectra accompanied by severe thermal quenching. Here, we demonstrate a dual-site occupancy strategy mitigating this trade-off by enabling Ni 2+ to occupy two crystallographically distinct octahedral sites in double perovskite Ca 2 AlTaO 6 . The optimized Ca 2 AlTaO 6 :Ni 2+ phosphor exhibits broadband NIR-II emission (1050–1650 nm) with a 225 nm full width at half maximum, retaining 61% of room-temperature luminescence intensity at 423 K. Spectral deconvolution, lifetime analysis, and structural characterization reveal the concentration-dependent emission peak red-shift (1260 → 1310 nm) originates from dynamic Ni 2+ redistribution between the two sites, with controllable spectral broadening. This site-selective emission mechanism provides a reliable route for tunable NIR-II spectral engineering. A phosphor-converted LED based on a commercial red excitation chip delivers efficient NIR-II output, validated in night-vision imaging, biological tissue transillumination, and qualitative chemical identification. These results establish dual-site occupancy as a viable, generalizable design principle for broadband, thermally stable NIR emitters, with direct relevance to photonic light-source engineering.
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DOI
高影响因子
PROGRESS IN NUCLEAR ENERGY
·
2026
·
IF 3.2
Yixuan Cai,Mei Li,Hedi Wei,Xudong Wang,Jiayi Chen,Jia Yan,Rugeng Liu,Linshan Zhang,Wei Han
To electrodeposit uranium dioxide from LiCl–KCl molten salt containing Cr 3+ and Ni 2+ , a series of electrochemical techniques were employed to investigate the electrochemical behavior of UO 2 2+ , Cr 3+ , and Ni 2+ . CV and SWV measurements revealed that Cr 3+ is reduced to metallic Cr through a two-step process, while Ni 2+ undergoes a one-step, two-electron process to form metallic Ni. UO 2 2+ is reduced to uranium dioxide via two successive one-electron transfer steps, and its reduction mechanism remains unaffected by the presence of Cr 3+ and Ni 2+ . Chronoamperometry was employed to study the influence of Cr 3+ on the nucleation mechanism of UO 2 2+ , which indicated that the addition of Cr 3+ could decrease the nucleation density of uranium dioxide. In addition, the effects of Cr 3+ and Ni 2+ on the electrodeposition of uranium dioxide were separately explored. In the presence of Cr 3+ , the deposited product contained only uranium dioxide and no Cr was deposited, but the current efficiency was reduced. Pulse electrolysis was carried out and found that current efficiency could be improved by pulse electrolysis in the presence of Cr 3+ . The introduction of Ni 2+ led to the co-deposition of uranium dioxide and Ni, while significantly accelerating the extraction rate of uranium dioxide. Thermodynamic analysis and experimental results indicate that this enhancement arises from the in situ reduction of UO 2 2+ by the deposited Ni, a process that proceeds much faster than the direct electrochemical reduction of UO 2 2+ .
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DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2015
·
IF 4.529
Ping Tan,Jian Sun,Yongyou Hu,Zheng Fang,Qi Bi,Yuancai Chen,Jianhua Cheng
Novel, highly ordered layered graphene oxide (GO) membranes with larger interlayer spacing were prepared by induced directional flow and were used as adsorbents for the removal of Cu 2+ , Cd 2+ and Ni 2+ from aqueous solutions. The effects of pH, ionic strength, contact time, metal ion concentration and cycle time on Cu 2+ , Cd 2+ and Ni 2+ sorption were investigated. The results indicated that the adsorption of Cu 2+ , Cd 2+ and Ni 2+ onto GO membranes was greatly influenced by the pH and weakly affected by the ionic strength. The adsorption isotherms for Cu 2+ , Cd 2+ and Ni 2+ were well fitted by the Langmuir model. The maximum adsorption capacities of the GO membranes for Cu 2+ , Cd 2+ and Ni 2+ were approximately 72.6, 83.8 and 62.3 mg/g, respectively. The adsorption kinetics of Cu 2+ , Cd 2+ and Ni 2+ onto GO membranes followed the pseudo-second-order model. The adsorption equilibrium was reached in a shorter time. The GO membranes can be regenerated more than six times based on their adsorption/desorption cycles, with a slight loss in the adsorption capacity. The results demonstrated that the GO membranes can be used as effective adsorbents for heavy metal removal from water.
研究领域:
环境科学
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）