TOPICS IN CATALYSIS
·
2021
·Vol. 64
·期 7
·559-566
·
IF 2.91
Chen Fangyuan,Mu Kelei,Zhang Dongpeng,Mi Xueyue,Li Yi,Shen Zhurui,Zhan Sihui
As a photocatalyst responding to visible light, red phosphorus has the advantages of cheap and easy availability, low toxicity and suitable band gap. In this work, ultra-thin red phosphorus (URP) with the narrower band gap through ultrasound for 8 h was successfully synthesized. Though a series of characterization (such as: XPS analysis, photoelectric response analysis, Raman analysis, AFM images, etc.), the narrow band gap and ultra-thin nanosheet structure could promote the generation of more photogenerated electrons and effectively improve the separation rate of photogenerated charges for highly efficient hydrogen evolution. URP showed the excellent photocatalytic hydrogen production without any cocatalysts (0.55 mmol g −1 h −1 ), which was 2.88 times for untreated red phosphorus. In addition, URP overcame the limited stability and decreased the band gap of red phosphorus, producing hydrogen at a rate of 0.16 mmol g −1 h −1 after three cycles. This readily available and ultra-thin material can be used as a substrate material for other materials due to its similar graphene thickness.
研究领域:
材料科学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Chemistry C
·
2022
·Vol. 10
·期 27
·10017-10026
·
IF 8.067
Jinchao Qiao,Xin Gao,Jianjun Liu,Qiang Zhou,Longhai Zhong,Kaiyuan Liu,Yunfei Li,Pengwan Chen
In this study, well-crystallized black phosphorus nanosheets are obtained via shock-induced phase transformation. Red phosphorus powder is filled in a sample container and subjected to high shock pressure and temperature using a shock-driven flyer. Moreover, flyer impact velocity is adjusted to investigate the influence of shock pressure and temperature on the phase transformation of red phosphorus. The recovered black samples are characterized via multiple techniques, such as X-ray diffraction, Raman spectroscopy, scanning electron microscopy, transmission electron microscopy and atomic force microscopy. The characteristic results demonstrate the presence of black phosphorus nanosheets with a lateral size of 0.5–20 μm and a thickness of 1.5–50 nm. Moreover, the results also confirm the critical influence of the shock pressure on the micromorphology of the recovered samples. The increase of shock pressure thickens the formed black phosphorus nanosheets and decreases their lateral size. In addition, the formation mechanism of black phosphorus nanosheets by shock-induced phase transformation of red phosphorus is carefully analyzed. This research provides a new method to prepare gram-scale black phosphorous nanosheets through shock treatment for the first time.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
MOLECULES
·
2024
·Vol. 29
·期 6
·1271
·
IF 4.2
Jingjing Wang,Fulai Liu,Yunfei Li,Long Chen,Yong Chen,Hailong Zhang,Zheng Xie
Although laser technology brings convenience to production and daily life, it also causes high-energy damage. Therefore, there is an urgent need to develop optical limiting materials for laser protection. In this study, a novel nonlinear optical material, red/black phosphorus lateral heterojunction, is successfully prepared through solvothermal and ultrasonic treatment. Using the Z−scan method, the nonlinear optical properties of the red/black phosphorus heterojunction are determined at wavelengths of 532 and 1064 nm. These results indicate that the red/black phosphorus heterojunction exhibits reverse saturable absorption properties in 1.2.3-glycerol. Interestingly, the red/black phosphorus heterojunction shows an enhanced performance over red phosphorus by introducing the black phosphorus phase. Moreover, the red/black phosphorus heterojunction is doped into organically modified silicate gel glass with excellent broadband optical limiting performance. This study highlights the promising prospect of the red/black phosphorus heterojunction in the nonlinear optical and optical limiting fields.
研究领域:
材料科学
·
光学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2019
·
IF 14.229
Yukun Zhu,Junzhi Li,Chung-Li Dong,Jun Ren,Yu-Cheng Huang,Daming Zhao,Rongsheng Cai,Daixing Wei,Xianfeng Yang,Chunxiao Lv,Wolfgang Theis,Yuyu Bu,Wei Han,Shaohua Shen,Dongjiang Yang
In this study, we report a facile strategy to prepare a new class of red phosphorus (RP) decorated and doped TiO 2 (A: anatase and B: TiO 2 (B)) nanofibers with boosted photocatalytic hydrogen evolution reaction (HER) performance from pure water. The optimized TiO 2 (B)/RP and TiO 2 (A)/RP heterostructure exhibits significantly enhanced photocatalytic performances, with HER rate reaching 11.4 and 5.3 μmol h −1 , respectively. The optical absorption of TiO 2 is significantly extended to the visible light region after decoration of RP. And more oxygen vacancies (V O ) were introduced by phosphorus doping in the TiO 2 (B)/RP than TiO 2 (A)/RP. The theoretical calculations illustrate the formation of V O can decrease the ratio of effective masses of electron to hole, which gives rise to promoted photoinduced charge separation and transfer. These results suggest that the boosted photocatalytic HER performance should be mainly attributed to the synergetic enhancement in light harvesting and charge separation enabled by RP deposition and P 5+ doping.
研究领域:
材料科学
·
能源化学
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Xian Lu,Wei-Lin Lin,Yue-E Huang,Jia-Xiang Zhang,Lun-Hui Guan,Xiao-Ying Huang,Ke-Zhao Du,Xiao-Hui Wu
A strategy is developed to fabricate NiO-reduced graphene oxide (rGO) layer-modified nickel foam (M-NF) as a current collector. Red phosphorous (RP) nanoparticles embedded in rGO nanosheets (P-rGO) are loaded on the M-NF (P-rGO@M-NF) as a superior anode for high-performance potassium-ion batteries. The binder-free P-rGO@M-NF anode exhibits a remarkable electrochemical performance with outstanding cycling stability and high rate capability, delivering a specific capacity of 361.2 mA h g–1 at a current density of 100 mA g–1 after 125 cycles. Theoretical calculations reveal that RP loaded on NiO can absorb K atoms easily and exhibit a semiconductor-to-metal transition after the incorporation of K atoms, exhibiting the significantly enhanced conductivity. In addition, a NiO layer can efficiently anchor RP nanoparticles by a strong Ni–O–P bond, which can endow P-rGO@M-NF a long-term lifespan. Thus, the excellent potassium storage performance of P-rGO@M-NF can be attributed to synergistic effects between modified nickel foam and P-rGO network. This present strategy to modify the current collector for anchoring alloy-type RP can be extended to other novel electrodes for high-performance energy-storage devices.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
APPLIED SURFACE SCIENCE
·
2020
·
IF 6.182
Donghai Wei,Yinglong Wu,Yan Nie,Junfei Duan,Chenhao Cao,Jianghong Wu,Lingjun Li,Zhaoyong Chen,Guanhua Zhang,Huigao Duan
Red phosphorus (RP), as one of the most promising anode materials for lithium-ion batteries, attracts much attention for its high theoretical specific capacity, cost-effective, and commercial availability. However, poor cycling stability and rate capability caused by huge volume expansion and low intrinsic electronic conductivity hinder the commercialization of RP-based anode. Herein, RP confined in ultrathin hollow carbon-bubble-constructed foam (RP-HC) is developed to improve electronic conductivity and mechanical structure stability. Additionally, low-temperature atomic layer deposition (LT-ALD) technology is adopted to further modify the surface of the RP-HC, forming a core–shell RP-HC@TiO 2 structure with about 5 nm TiO 2 coating layer. Benefiting from the dual confinement of TiO 2 buffer layer and conductive porous carbon host with effective P O C bond, the RP-HC(70%)@TiO 2 electrode delivers an outstanding cycling performance (795.2 mAh g −1 after 200 cycles at 100 mA g −1 ) and rate capability (459.9 mAh g −1 at 2000 mA g −1 , almost 1.6 times and 12 times relative to RP-HC(70%) and RP under the same test condition). In-situ electrochemical impedance spectroscopy analyses are also conducted to investigate the superior Li + storage properties of the RP-HC@TiO 2 .
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
MICROPOROUS AND MESOPOROUS MATERIALS
·
2020
·
IF 4.551
Junpeng Xue,Deping Wang,Xiaohong Xia,Yuxi Chen,Hongbo Liu
Here, we report a nano-sized red phosphorous/biomass-derived porous carbon (P@BDPC) which is employed as anode materials for lithium ion batteries (LIBs) via a facile vaporization−condensation−conversion strategy (VCC) with tobacco stem as the carbon precursor. The biomass-derived porous carbon not only acts as the host of red phosphorus to enhance the electrical conductivity , but also minimizes the volume expansion (≈400%) during cycling. The obtained P@BDPC composite with a high red phosphorus content (62.1 wt%) delivers a high specific capacity of 1689 mA h g −1 at 500 mA g −1 with an initial Coulombic efficiency (ICE) of 91.7% and superior rate capability of 599 mA h g −1 at 30 A g −1 . Furthermore, a high reversible capacity of 918 mA h g −1 can be retained over 600 cycles at 5 A g −1 , indicating a remarkable cycle stability. More importantly, the introduction of agriculture waste-tobacco stem contributes to building low-cost, high-performance anode materials.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
Nanoscale
·
2020
·Vol. 12
·期 27
·14642-14650
·
IF 6.895
Longfei Han,Junling Wang,Xiaowei Mu,Can Liao,Wei Cai,Zhixin Zhao,Yongchun Kan,Weiyi Xing,Yuan Hu
Red phosphorus (P) is considered to be the most suitable electrode for sodium-ion batteries due to its low cost, earth abundance and high theoretical capacity. Numerous studies have focused on improving the low conductivity and the extremely large volume change of red P during the cycling process. However, these strategies heavily decrease the P mass loading in the electrode. Herein, inspired by natural wood, we successfully develop an ultra-thick bulk red Phosphorus@Carbon-Wood (red P@C-Wood) electrode via the vaporization-condensation process. The sodium-ion batteries assembled with the fabricated red P@C-Wood electrode provide a high areal capacity of 18 mA h cm−2 (≈5 times those of other reported electrodes) and the P mass loading of up to 8.4 mg cm−2 (≥2 times those of other reported electrodes). The combination of red phosphorus and carbonized wood provides a new strategy for people to improve the areal energy density of lithium and sodium batteries.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2017
·
IF 7.504
Linli Xu,Linhong Xiao,Pan Jia,Karel Goossens,Peng Liu,Hui Li,Chungui Cheng,Yong Huang,Christopher W. Bielawski,Jianxin Geng
High-performance flame-retardant materials are urgently needed to address outstanding issues that pertain to safety. Traditional flame retardants are toxic to the environment and/or lack the physical properties required for use in many contemporary applications. Here, we show that isocyanate-based polyimide (PI) foam, a flammable material, can exhibit unusually superior flame retardancy as well as other excellent properties, such as being lightweight and displaying high mechanical strength, by incorporating red phosphorus (RP)-hybridized graphene. The covalent bonds formed between the graphene platelets and the PI matrix provide the resultant PI foam with a specific Young’s modulus (83 kNm kg–1) that is comparable to or even higher than those displayed by state-of-the-art foams, including silica aerogels, polystyrene foams, and polyurethane foams. In addition, even a low content of the RP-hybridized graphene (2.2 wt %) results in an exceptionally higher limiting oxygen index (39.4) than those of traditional flame-retardant polymer-based materials (typically 20–30). The resultant PI foam also exhibits thermal insulation properties that are similar to that of air. Moreover, the RP-hybridized graphene is prepared using a one-step ball milling process in 100% yield, and does not require solvent or produce waste. The preparation of the flame-retardant PI foams can be scaled as the starting materials are commercially available and the techniques employed are industrially compatible.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CATALYSIS TODAY
·
2018
·
IF 4.667
Zhenpeng Ren,Donghui Li,Qiang Xue,Jiaojiao Li,Yuewei Sun,Ruiqin Zhang,Yunpu Zhai,Yonggang Liu
Red phosphorus, as a metal free elemental photocatalyst, shows great potential applications for overall water splitting and environmental pollutants degradation. Facile fabrication of nano-sized and uniformly distributed phosphorus material is still challenging. Herein, we develop a facile approach to fabricate red phosphorus with particle size less than 10 nm through a hydrothermal and ultrasonic method. The hydrothermal and ultrasonic conditions were optimized. The red phosphorus sample hydrothermally treated at 200 °C for 12 h and then ultrasonically treated for 2 h at room temperature showed the best photocatalytic performance, which can effectively degrade Rhodamine B (RhB) and p-nitrophenol under visible light irradiation. The origin of the improved activity was attributed to the enhanced physical adsorption capacity, increasing active reaction sites and highly effective charge separation.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Xinyi Han,Xiaodong Meng,Shang Chen,Ji Zhou,Manyun Wang,Longhua Sun,Yuncan Jia,Xiaomeng Peng,Hairong Mai,Guangxu Zhu,Jingyu Li,Christopher W. Bielawski,Jianxin Geng
Red phosphorus (RP) is a promising anode material for use in lithium-ion batteries (LIBs) due to its high theoretical specific capacity (2596 mA h g–1). However, the practical use of RP-based anodes has been challenged by the material’s low intrinsic electrical conductivity and poor structural stability during lithiation. Here, we describe a phosphorus-doped porous carbon (P-PC) and disclose how the dopant improves the Li storage performance of RP that was incorporated into the P-PC (designated as RP@P-PC). P-doping porous carbon was achieved using an in situ method wherein the heteroatom was added as the porous carbon was being formed. The phosphorus dopant effectively improves the interfacial properties of the carbon matrix as subsequent RP infusion results in high loadings, small particle sizes, and uniform distribution. In half-cells, an RP@P-PC composite was found to exhibit outstanding performance in terms of the ability to store and utilize Li. The device delivered a high specific capacitance and rate capability (1848 and 1111 mA h g–1 at 0.1 and 10.0 A g–1, respectively) as well as excellent cycling stability (1022 mA h g–1 after 800 cycles at 2.0 A g–1). Exceptional performance metrics were also measured when the RP@P-PC was used as an anode material in full cells that contained lithium iron phosphate as the cathode material. The methodology described can be extended to the preparation of other P-doped carbon materials that are employed in contemporary energy storage applications.
研究领域:
材料科学
·
能源存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Water
·
2023
·Vol. 16
·期 1
·167
·
IF 3.4
Tiantian Chen,Jiayu Sun,Ruixue Jiang,Tongfei Zhang,Yulei Zhang,Xiaochen Li
Purified red phosphorus (RP) can be used as an adsorbent. However, the adsorption mechanism and reuse ability of purified RP have not been reported. This study utilized X-ray diffraction, Fourier transform infrared spectroscopy and scanning electron microscopy techniques (a statistical physics model and the standard molar free energy of formation) to investigate the adsorption mechanism of methylene blue (MB) by purified RP. Purification did not change commercial RP structure according to X-ray diffraction. The results showed that the adsorption process only included physical adsorption according to Fourier transform infrared spectroscopy and UV–vis diffuse reflection absorption spectra. The specific areas of commercial RP and purified RP were 0.02 cm3/g and 5.27 cm3/g, respectively. Thus, purified RP has a higher adsorption capacity compared with commercial RP. A statistical physics model showed that, as the temperature increased from 288 to 308 K, theqe,Dmandqsatof purified RP for MB increased from 179.87, 0.824 and 0.824 to 303.26 mg/g, 1.497 mol/kg and 1.497 mol/kg, respectively. The fitted values of ΔrSmθ, ΔrHmθand ΔrGmθwere 104.38 J·mol−1·K−1, −2.7 × 103J·mol−1and negative, respectively. Thus, according to adsorption energy, the adsorption of MB by purified RP was a spontaneous process, which was mainly driven by entropy increasing. Compared with neutral dye, the purified RP had higher adsorption ability for the cationic dye and anionic dye. As the purified RP dose increased from 30 to 150 mg, the adsorption capacity of purified RP increased. However, as the MB concentration and pH increased, the adsorption capacity of purified RP decreased. The purified RP had excellent reuse ability and high temperature desorption can be applied to obtain its reuse ability.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）