Nanomaterials
·
2022
·Vol. 12
·期 21
·3742
·
IF 5.719
Qiao Li,Xiaosong Zheng,Xiaoyu Shen,Shuai Ding,Hongjian Feng,Guohua Wu,Yaohong Zhang
Colloidal AgBiS2nanocrystals (NCs) have attracted increasing attention as a near–infrared absorbent materials with non–toxic elements and a high absorption coefficient. In recent years, colloidal AgBiS2NCs have typically been synthesized via the hot injection method using hexamethyldisilathiane (TMS) as the sulfur source. However, the cost of TMS is one of the biggest obstacles to large–scale synthesis of colloidal AgBiS2NCs. Herein, we synthesized colloidal AgBiS2NCs using oleylamine@sulfur (OLA–S) solution as the sulfur source instead of TMS and optimized the synthesis conditions of colloidal AgBiS2NCs. By controlling the reaction injection temperature and the dosage of OLA–S, colloidal AgBiS2NCs with adjustable size can be synthesized. Compared with TMS–based colloidal AgBiS2NCs, the colloidal AgBiS2NCs based on OLA–S has good crystallinity and fewer defects.Keywords:AgBiS2;colloidal nanocrystals;hot injection;sulfur source
研究领域:
材料科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2018
·
IF 5.091
Hui Li,Ziqun Wang,Yunhui He,Sugang Meng,Yun Xu,Shifu Chen,Xianliang Fu
Rational synthesis of photocatalytic materials is an effective way to improve their performance. In this work, to optimize the S precursors, a series of Mn x Cd 1−x S (MCS) were first hydrothermally synthesized with the prevalent thiourea (TA), thioacetamide (TAA) and L-cysteine (L-Cys) as the S sources. The optimum feed ratio of Mn/Cd was then determined based on the optimized S precursor. The effects of S precursors and the feed ratio of Mn/Cd on the phase structure, absorption, morphology, band structure, and the photocatalytic hydrogen evolution reaction (HER) performance of MCS were investigated systematically. The hexagonal phase structures of MnS, CdS, and MCS are favored by TA and L-Cys as the S sources, while their cubic phases are benefited by TAA. TAA is the preferred S source for the preparation of highly active MCS and the solid solution is formed through the consolidation of cubic α-MnS into cubic CdS. The activity of MCS can be improved with the increase of Mn content from x = 0–0.6. The sample with x = 0.6 shows the highest HER activity (2253 μmol·h −1 ·g −1 ) and the performance is almost 6 times higher than CdS (416 μmol·h −1 ·g −1 ). The enhanced activity can be attributed to the improved separation efficiency of photo-induced charge carriers and the negative-shifts of E cb , which are induced by the introduction of Mn. A segregation of inert α−MnS from MCS is occurred when Mn content is >0.6, resulting in a decay of the HER activity. A change of the semiconductivity from n-type to bipolar type is occurred in MCS due to the uneven sulfidation of Mn in MCS.
研究领域:
材料科学
·
光催化
✓ 已验证
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2021
·
IF 8.128
Hong Li,Yu Qiu,Siliang Yue,Ruixin Xu,Xiaohui Guo
Here, Rare-earth metal oxysulfide Ce 2 O 2 S nanostructures with tunable morphology are successfully grown on carbon cloth (CC) for supercapacitors (SCs) via a facile hydrothermal process followed by pyrolysis treatment for the first time. The feeding amount of sulfur source thioacetamide (TAA) plays an important role in the formation of Ce 2 O 2 S nanostructures with tunable morphology. Adjusting TAA feeding amount from 0.5 to 1.0, 1.5, and 2.0 g, the morphology of the resulted Ce 2 O 2 S nanostructure can change from pine bark-like agglomerated nanoparticles to fan-shaped nanosheets with edged branches, cuttlefish-like nanostructure with long terminal whiskers and polygon prism with spikes. Among them, Ce 2 O 2 S/CC-1.0 g TAA nanostructure with largest specific surface area and abundant mesopores exhibits a high specific capacitance of 670, 321.5 or 588.3 mF cm −2 at 1 mA cm −2 in an acid, neutral or alkaline electrolyte , respectively. Moreover, Ce 2 O 2 S/CC-1.0 g TAA electrode delivers excellent cycling stability with high capacitance retention of 93% after 5000 cycles in alkaline electrolyte. Our findings present a new strategy to fabricate rare-earth metal oxysulfide Ce 2 O 2 S nanostructures with controllable morphology and systematically reveal their electrochemical performance for SCs, moreover, provide new perspectives for boosting the preparation and application of metal oxysulfides in energy storage.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
RSC Advances
·
2022
·Vol. 12
·期 18
·11262-11271
·
IF 4.036
Qiong Zhu,Jinhua Wang,Si Chen,Hongquan Fu,Juan Zhang,Hejun Gao,Yunwen Liao
By controlling the species of the organic sulfur source, CdS samples were produced with different photocatalytic performances by a low-temperature solvothermal method. Different species of the organic sulfur source were chosen as the coordination agent to control the interactions in the crystal growth process. Among them, thioacetamide was the best coordination agent. The hydrophobic chain could be good for reducing the resistance of charge transfer, and increasing the rate of surface charge transfer and the lifetime of the photoexcited electrons. Benefiting from the hydrophobic chain, CdS shows an excellent photocatalytic hydrogen evolution rate of 943.54 μmol h−1 g−1 and a rhodamine B photocatalytic degradation rate of 99.1% in 60 min, which is superior to the photocatalysis of pure CdS prepared by many other methods.
研究领域:
材料科学
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化学工程
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环境科学
✓ 已验证
DOI
PubMed
高影响因子
ChemistrySelect
·
2024
·Vol. 9
·期 37
·e202403487
·
IF 1.9
Fang Wu,Yuhong Jiao,Jin-Long Ge,Chao Feng,Zhong Wu,Yujun Zhu,Qiu Li
Graphical Three different nickel sulfides on nickel foam were fabricated via a simple sulfuring the as-formed Ni-MOF/NF with different sulfides as the sulfur source especially MOFs derived Ni-MOF/NF-SS exhibits superior OER performance. Developing low-cost and exceedingly efficient electrocatalysts for oxygen evolution reaction (OER) is vital for application of hydrogen production from water splitting. Herein, three different nickel sulfides on nickel foam were fabricated via a simple sulfuring the as-formed Ni-MOF with different sulfide as the sulfur source. The effect of sulfur source on OER performance, morphology and structure of the as-prepared product are well discussed. The optimized Ni-MOF/NF-SS deliver overpotentials of 253 and 330 mV to reach current densities of 10 and 100 mA cm −2 with a small Tafel slope of 70.9 mVdec −1 , and stability of over 50 h. This work provides insights into the relationship between the OER activity and the structures of nickel sulfides, but also affords a new route to fabricate nickel sulfides-based electrocatalysts for OER.
研究领域:
材料科学
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
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2018
·Vol. 29
·期 10
·8636-8648
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IF 2.324
Yuan Xiaofang,Tang Bin,Sui Yanwei,Huang Saifang,Qi Jiqiu,Pu Yuguang,Wei Fuxiang,He Yezeng,Meng Qingkun,Cao Peng
In this study, CuCo 2 S 4 directly grown on carbon fiber papers (CFP) were prepared by a low-cost hydrothermal method. We also studied the influence of two different sulfur sources on the morphology and performance of CuCo 2 S 4 . Compared to TAA as sulfur source, the performance and morphology of CuCo 2 S 4 by Na 2 S·9H 2 O are better. The CuCo 2 S 4 –Na 2 S nanotubes possess irregular diameters from 100 to 200 nm. An electrode made of the synthesized CuCo 2 S 4 –Na 2 S nanotubes/CFP composite exhibits a maximum specific capacitance of 456 F g −1 at 1 A g −1 and 83% of capacitance retention after 5000 cycles at 5 A g −1 . The synthesized CuCo 2 S 4 –Na 2 S/CFP is used to construct an all-solid-state asymmetric supercapacitor (ASC) as the positive electrode, while and the negative electrode is made of a Fe 2 O 3 /reduced graphene oxide (rGO) composite on Ni foam. This asymmetric device has delivered an energy density of 50 W h kg −1 and a power density of 700 W kg −1 at an operating voltage of 1.5 V. It retains a long cycling life—78.2% capacity retention ratio after 5000 cycles. This work demonstrates the feasibility of the CuCo 2 S 4 –Na 2 S nanotubes in the applications of high-performance supercapacitors.
研究领域:
材料科学
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能源存储技术
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 106
·86885-86890
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IF 3.84
Hechun Lin,Qianqian Luo,Wen-Yi Tong,Chunli Jiang,Rong Huang,Hui Peng,Lai-Chang Zhang,Jadranka Travas-Sejdic,Chun-Gang Duan
EuS and Gd2O2S nanocrystals with narrow size distribution are synthesized in high yields by the thermal decomposition of Eu(oleate)3 or Gd(oleate)3 in oleylamine using CS2 as the sulfur source. The dimensionalities of these nanocrystals can be facilely tuned by the addition of 1-dodecanethiol. The morphologies and crystal structures of EuS and Gd2O2S nanocrystals are characterized by TEM and XRD. The magnetic properties of the obtained nanocrystals are also investigated. The experimental results illustrate that CS2 is an effective sulfur source for the preparation of metal sulfide and lanthanide oxysulfide semiconductor nanocrystals.
研究领域:
材料科学
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纳米科技
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无机化学
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半导体物理
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磁性材料
✓ 已验证
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 21
·11489-11497
·
IF 2.936
Hui Li,Lihua Liu,Ziqun Wang,Xiuzhen Zheng,Sugang Meng,Shifu Chen,Xianliang Fu
Although the CdS photocatalyst has been extensively investigated, a rational hydrothermal synthesis route is still required to prepare highly active CdS for H2 evolution reaction (HER). To optimize the precursor of the sulfur source, three prevalent organic sulfur sources of thiourea (TA), thioacetamide (TAA) and L-cysteine (L-Cys) were used for hydrothermal synthesis of CdS. Their effects on the crystallographic structure, morphology, optical property, band structure, and photocatalytic HER performance of the products were then investigated systematically. The results indicated that hexagonal branched dendritic structure CdS (S-TA) could be produced in TA solution and showed the highest HER activity due to the branched 1D structure, the smallest interfacial electron transfer resistance and the most negative conduction band bottom (Ecb). Whereas in TAA, spherical CdS (S-TAA) with a mixed phase of hexagonal and cubic was obtained. The mixed phase structure and the more positive Ecb of S-TAA lead to a considerably lower HER activity than that of S-TA. Poorly crystallized hexagonal CdS nanoparticles (S-Cys) were prepared in L-Cys and showed the lowest HER performance as its Ecb is very near to H+ reduction potential. Thus, compared to T-AA and L-Cys, TA is a more suitable sulfur source for hydrothermal preparation of highly active CdS for HER.
研究领域:
材料科学
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能源化学
✓ 已验证
DOI
PubMed
高影响因子
Materials Research Express
·
2022
·Vol. 9
·期 11
·115503
·
IF 2.025
Liu Liu,Yijie Zhao,Guowei Zhi,Lihui Cao,Wei Wang,Luanhong Sun,Yuxuan Che
CuSbS2 is a direct p-type semiconductor with a two-dimensional layered structure of orthorhombic system, excellent electrical performance, and a band gap of 1.1–1.5 eV, which has a light absorption coefficient of more than 104cm−1 in the visible light range. CuSbS2 particles were synthesized by microwave irradiation method, and the effects of different sulfur sources on the phase structure, morphology and electrochemical performance of CuSbS2 particles were studied. The results showed that the sample prepared by thiourea as sulfur source was CuSbS2 phase, and the morphology was composed of flower-like microspheres and rod-like particles. However, nanorod-like CuSbS2 particles were obtained using L-cysteine or 3-thiopropionic acid as sulfur sources, and the phase of samples contained CuSbS2 and Sb2S3 phase. Electrochemical tests showed that L-cysteine based CuSbS2 particles had the largest photocurrent response, a photocurrent density of 1.03 μA cm−2 and impedance of 14.66 Ω.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Journal of Environmental Sciences
·
2017
·
IF 2.865
Yanfeng Wang,Wei Chen,Xiao Chen,Huajun Feng,Dongsheng Shen,Bin Huang,Yufeng Jia,Yuyang Zhou,Yuxiang Liang
CdS/MoS 2 , an extremely efficient photocatalyst , has been extensively used in hydrogen photoproduction and pollutant degradation . CdS/MoS 2 can be synthesized by a facile one-step hydrothermal process. However, the effect of the sulfur source on the synthesis of CdS/MoS 2 via one-step hydrothermal methods has seldom been investigated. We report herein a series of one-step hydrothermal preparations of CdS/MoS 2 using three different sulfur sources: thioacetamide, l -cysteine, and thiourea . The results revealed that the sulfur source strongly affected the crystallization, morphology, elemental composition and ultraviolet (UV)–visible-light-absorption ability of the CdS/MoS 2 . Among the investigated sulfur sources, thioacetamide provided the highest visible-light absorption ability for CdS/MoS 2 , with the smallest average particle size and largest surface area, resulting in the highest efficiency in Methylene Blue (MB) degradation. The photocatalytic activity of CdS/MoS 2 synthesized from the three sulfur sources can be arranged in the following order: thioacetamide > l -cysteine > thiourea . The reaction rate constants ( k ) for thioacetamide, l -cysteine, and thiourea were estimated to be 0.0197, 0.0140, and 0.0084 min −1 , respectively. However, thioacetamide may be limited in practical application in terms of its price and toxicity, while l -cysteine is relatively economical, less toxic and exhibited good photocatalytic degradation performance toward MB.
研究领域:
材料科学
·
环境化学
·
纳米催化
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光催化
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无机功能材料
·
能源材料
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2025
·
IF 8.3
Sana Nazeer,Syed Ejaz Hussain,Junjie Qi
Semiconducting 2H-phase MoS 2 often performs poorly in the hydrogen evolution process and has low conductivity. Se increases stability, electrical conductivity, and catalytic activity when added to MoS 2 . Using carbon cloth as the substrate and several sulfur sources, such as Thioacetamide, L-cysteine, and Thiourea, this study developed an effective hydrothermal synthesis process to produce a MoS 2(1-x) Se 2x ternary alloy. When used as an electrocatalyst for HER, the TAA-MoSSe/CC alloy with an S/Se balance of 1:1 reaches at overpotential of 120 mV at the conventional current density of about 10 mA/cm 2 , whereas the observed Tafel slope value is 41 mV/dec. Furthermore, the strength of the Ternary alloys covered by the present investigation is enhanced by testing for air stability and durability. According to the characteristics of these ternary alloys, the creation of MoS 2(1-x) Se 2x depends critically on the temperature at which the sulfur precursor decomposes. Improved HER catalytic performance results from the rapid release of sulfur ions from sulfur precursors, which decompose at lower temperatures. These sulfur ions replace more Se ions in MoS 2(1-x) Se 2x .
研究领域:
材料科学
·
电化学
·
纳米材料
·
能源催化
·
无机功能材料
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2020
·
IF 7.489
Qin Hu,Shengtao Zhang,Feng Chen,Wenpo Li,Hao Jiangyu,Xinyue Liang,Bin Xiang,Chao Chen,Xuefeng Zou
Nickel sulfide possesses ultra-high theoretical energy storage capacity. Though it is easily obtained, it is very difficult to exert its intrinsic strong capacity. In this work, a new strategy based on a binary synergy of sulfur sources is introduced. By regulating the molar ratio of two sulfur sources, a high-performance α-NiS/Ni 3 S 4 binary hybrid is successfully synthesized. Interestingly, it is found that changing the molar ratio of two sulfur sources in hydrothermal process can efficiently regulate the components of product but cannot visibly affect its morphology. The electrochemical results indicate that this strategy is highly effective for improving the performance of nickel sulfide. As a result, a highest specific capacity of 214.9 mAh g −1 at 2 A g −1 was reached. In addition, the fabricated S3//rGO hybrid supercapacitor displays a highest energy density of 41.9 Wh kg −1 at a power density of 799.0 kW kg −1 . Moreover, the device delivers an excellent cycle stability with 103% capacity retention rate after 10,000 cycles. These findings open a new avenue for the controlled synthesis of high-performance nickel sulfides or other metal sulfides.
研究领域:
材料科学
·
电化学
·
纳米技术
·
储能
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）