MOLECULES
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2023
·Vol. 28
·期 11
·4520
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IF 4.6
Xiangrui Feng,Hongji Chen,Hongfei Yin,Chunyu Yuan,Huijun Lv,Qian Fei,Yujin Zhang,Qiuyu Zhao,Mengmeng Zheng,Yongzheng Zhang
ZnIn2S4(ZIS) is widely used in the field of photocatalytic hydrogen production due to its unique photoelectric properties. Nonetheless, the photocatalytic performance of ZIS usually faces problems of poor conductivity and rapid recombination of charge carriers. Heteroatom doping is often regarded as one of the effective strategies for improving the catalytic activity of photocatalysts. Herein, phosphorus (P)-doped ZIS was prepared by hydrothermal method, whose photocatalytic hydrogen production performance and energy band structure were fully studied. The band gap of P-doped ZIS is about 2.51 eV, which is slightly smaller than that of pure ZIS. Moreover, due to the upward shift of its energy band, the reduction ability of P-doped ZIS is enhanced, and P-doped ZIS also exhibits stronger catalytic activity than pure ZIS. The optimized P-doped ZIS exhibits a hydrogen production rate of 1566.6 μmol g−1h−1, which is 3.8 times that of the pristine ZIS (411.1 μmol g−1h−1). This work provides a broad platform for the design and synthesis of phosphorus-doped sulfide-based photocatalysts for hydrogen evolution.Keywords:ZnIn2S4;phosphorus doping;photocatalytic;hydrogen generation
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
Small
·
2019
·Vol. 15
·期 10
·1804546
·
IF 10.856
Jing Yang,Donghua Guo,Shulin Zhao,Yue Lin,Rui Yang,Dongdong Xu,Naien Shi,Xiaoshu Zhang,Lingzhi Lu,Ya-Qian Lan,Jianchun Bao,Min Han
As one class of important functional materials, transition metal phosphides (TMPs) nanostructures show promising applications in catalysis and energy storage fields. Although great progress has been achieved, phase-controlled synthesis of cobalt phosphides nanocrystals or related nanohybrids remains a challenge, and their use in overall water splitting (OWS) is not systematically studied. Herein, three kinds of cobalt phosphides nanocrystals encapsulated by P-doped carbon (PC) and married with P-doped graphene (PG) nanohybrids, including CoP@PC/PG, CoP-Co 2 P@PC/PG, and Co 2 P@PC/PG, are obtained through controllable thermal conversion of presynthesized supramolecular gels that contain cobalt salt, phytic acid, and graphene oxides at proper temperature under Ar/H 2 atmosphere. Among them, the mixed-phase CoP-Co 2 P@PC/PG nanohybrids manifest high electrocatalytic activity toward both hydrogen and oxygen evolution in alkaline media. Remarkably, using them as bifunctional catalysts, the fabricated CoP-Co 2 P@PC/PG || CoP-Co 2 P@PC/PG electrolyzer only needs a cell voltage of 1.567 V for driving OWS to reach the current density at 10 mA cm −2 , superior to their pure-phase counterparts and recently reported bifunctional catalysts based devices. Also, such a CoP-Co 2 P@PC/PG || CoP-Co 2 P@PC/PG device exhibits outstanding stability for OWS. This work may shed some light on optimizing TMPs nanostructures based on phase engineering, and promote their applications in OWS or other renewable energy options.
研究领域:
材料科学
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电催化
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能源化学
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纳米材料
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可再生能源
✓ 已验证
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2020
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IF 7.489
Jiao-Jiao Duan,Ru-Lan Zhang,Jiu-Ju Feng,Lu Zhang,Qian-Li Zhang,Ai-Jun Wang
Developing cost-effectiveness and superior electrocatalysts is crucial to improve the efficiency of oxygen evolution reaction (OER) in water splitting system. Hence, flower-like phosphorus doped Ni 3 S 2 /CoFe 2 O 4 arrays (P-Ni 3 S 2 /CoFe 2 O 4 /NF) were generated on three-dimensional (3D) nickel foam (NF) via the two-step hydrothermal treatment and subsequent phosphorization. Additionally, a series of control experiments were conducted to investigate the formation mechanism. By virtue of the unique 3D configurations and multi-compositions, the as-prepared catalyst exhibited greatly improved OER performance in 1.0 M KOH solution, with the overpotential of only 254 mV at 50 mA cm −2 and low Tafel slope of 54.43 mV dec −1 . This study provides a feasible approach for preparing advanced electrocatalyst in energy conversion and storage devices.
研究领域:
材料科学
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电催化
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能源转换与存储
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2024
·
IF 9.4
Yueru Yan,Yuanyuan Zhao,Yun Lou,Yafei Zhao,Huishan Shang,Yinze Yang,Dan Wang,Bing Zhang
Rational construction of core@shell heterostructured photocatalysts is the key to realize efficient hydrogen production from water splitting attributing to the accelerated photoinduced charges separation/transfer and enhanced light absorption ability. In this work, two-dimensional (2D) ZnIn 2 S 4 (ZIS) nanosheets were in-situ grown on phosphorus doped MnCo 2 O 4.5 (P-MnCo 2 O 4.5 ) nanospheres to construct P-MnCo 2 O 4.5 @ZIS heterostructured photocatalysts for efficient photocatalytic hydrogen production. The optimized 6 wt% P-MnCo 2 O 4.5 @ZIS composite presents remarkable photocatalytic hydrogen evolution rate of 4197 µmol g −1 h −1 (8 times of single ZIS) along with excellent cycling stability, which is comparable to most previous reported ZnIn 2 S 4 -based or even noble-metal involved catalysts. The improved photocatalytic performance is resulted from the distinguished heterostructure and components of P-MnCo 2 O 4.5 @ZIS, in which the close contact interface facilitates the separation/transfer and inhibits the recombination of charges, and the uniform distribution of ZIS nanosheets on P-MnCo 2 O 4.5 increases the active sites and fortifies the light absorption. The present work comes up with a prospective method for establishing core@shell ZIS-based heterostructured photocatalysts for efficient hydrogen generation.
研究领域:
材料科学
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能源化学
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产品关联
DOI
PubMed
高影响因子
Catalysis Science & Technology
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2019
·Vol. 10
·期 1
·263-267
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IF 5.726
Gang Yuan,Yujie Hu,Zihan Wang,Qiwei Wang,Li Wang,Xiangwen Zhang,Qingfa Wang
Water oxidation plays a pivotal role in energy conversion and storage such as in water splitting and metal-air batteries. The development of a highly active and stable electrode for water oxidation at a low price is greatly challenging. Here, we report a self-supported oxygen evolution reaction (OER) electrode with a 3D porous Ni foam (NF) as a core and a dense layer of amorphous phosphorus-doped Ni hydroxide (Ni–OH/P) film as a shell. This facilely fabricated 3D core–shell structured electrode with directly grown active materials offered improved activity and prolonged stability for OER. It required an overpotential of 490 mV to deliver a current density of 100 mA cm−2; it showed a small Tafel slope at 87 mV dec−1 and sustained elongated electrolysis at 100 mA cm−2 for 100 h. The NiOOH shell was in situ formed on the surface of the Ni–OH/P film. Then, a new core–shell structured film was constructed. The synergetic effects of the newly formed crystalline NiOOH shell and amorphous Ni–OH/P core contributed to high stability under harsh conditions. This work presents a facile and easy scale-up path to develop self-supported hybrid electrodes for efficient and stable energy conversion and storage.
研究领域:
能源材料
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电化学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
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2016
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IF 3.958
Zhiwei Li,Guodong Jiang,Zihao Zhang,Ye Wu,Yinhui Han
Photocatalysts Phosphorus-Doped g-C 3 N 4 (P(x%)-g-C 3 N 4 ) were successfully prepared by a two-step method using melamine and phosphonitrilic chloride trimer (Cl 6 N 3 P 3 ). Then, the Phosphorus-doped g-C 3 N 4 sheets coated with TiO 2 nanoparticles (P(x%)-g-C 3 N 4 /TiO 2 ) were prepared by solvent-thermal method. The as-prepared P(x%)-g-C 3 N 4 /TiO 2 composites showed enhanced light absorption and photocatalytic properties in visible light region. The morphology of g-C 3 N 4 nanosheets and square flake TiO 2 nanoparticles were analyzed with field emission scanning electron microscopy (FESEM) and scanning electron microscopy (SEM). X-ray photoelectron spectroscopy (XPS) proved that the P-C bonds were generated in P(x%)-g-C 3 N 4 . Photoluminescence (PL) spectra revealed that the phosphorus doping improved the separation and transfer of photogenerated electrons and holes in P(x%)-g-C 3 N 4 , UV–vis diffuse reflectance spectra (UV-vis DRS) indicated that the P(x%)-g-C 3 N 4 /TiO 2 heterostructure enhanced the absorption of visible light. The photocatalytic activity of the P(x%)-g-C 3 N 4 was evaluated by photocatalytic degradation of Methyl Blue (MB) under visible light irradiation. The result indicated that the P(0.1%)-g-C 3 N 4 /TiO 2 composite present considerably high photocatalytic degradation activities on MB, and the degradation of MB by P(0.1%)-g-C 3 N 4 /TiO 2 were 5.1 times and 2.9 times as high as that of g-C 3 N 4 and P25, respectively. At the end of article, a possible photocatalytic mechanism was discussed based on the experimental results.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
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2024
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IF 8.1
Huanhuan Wu,Huihui Ding,Jun Ma,Xiang Li,Shuangshuang Huai,Chengming Zhang,Ping Li,Jingjing Xia,Xiaolong Fang,Xiufang Wang
Limited charge transfer and slow oxygen evolution (OER) kinetics significantly impede the practical realization of photoanodes for photoelectrochemical (PEC) water splitting. Here, pn-type-Fe 2 O 3 homojunction photoanode catalysts with P active sites are designed by doping phosphorus (P) into outer lattice of n-type Fe 2 O 3 nanorods (pn-P-Fe 2 O 3 ). The optimized pn-P-Fe 2 O 3 photoanode shows the maximum photocurrent density of 2.61 mA/cm 2 at 1.23 V RHE , and the value is 6.4 times greater than that of pristine Fe 2 O 3 . Experimental and theoretical results clearly show that the P–N homogeneous junctions constructed in Fe 2 O 3 through P-doping increase active sites for H 2 O adsorption and activation, reduce OER reaction energy barrier, and promote effective separation of photogenerated electron-hole pairs and water splitting kinetics. This not only makes the photoelectric water decomposition performance outstanding, but also produces excellent durability. This work provides a novel simple and environmentally friendly strategy for designing effective photoanodes for PEC water splitting.
研究领域:
材料科学
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能源化学
✓ 已验证
产品关联
DOI
高影响因子
ENERGY & FUELS
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2024
·
IF 5.2
Munirah D. Albaqami,Mehar Un Nisa,Saikh Mohammad,Jafar Hussain Shah,Ateeq Ur Rehman Baloch,Abdul Ghafoor Abid,Shahroz Saleem
For hydrogen production, the greatest emphasis is on the development of economical and efficient bifunctional electrocatalysts. In the present work, P-doped CuMn2O4 on nickel foam (NF) is prepared. For the physical and structural analysis, XRD, FTIR, SEM, and BET techniques are performed. The optimized P0.3-CuMn2O4/NF shows the best OER and HER activity compared to other concentrations and pristine CuMn2O4/NF. P0.3-CuMn2O4/NF exhibits reduced OER and HER onset potentials of 1.4 and 0.095 V vs RHE, and overpotentials of 208 and 103 mV at 10 mA cm–2, respectively. For P0.3-CuMn2O4/NF, the kinetic study utilizing Tafel slope 32 and 44 mV dec–1 suggests more rapid OER and HER processes, respectively. Furthermore, following phosphorus doping, the turnover frequency (TOF) study shows enhanced intrinsic OER (TOF = 2.3 s–1 at η = 260 mV) and HER activity (TOF = 1.3 s–1 at η = 260 mV). P0.3-CuMn2O4/NF excellent OER and HER activities are supported by the double layer capacitance (Cdl = 92 mF cm–2). Hence, P0.3-CuMn2O4/NF is a potential electrocatalyst for both processes in an alkaline environment because of its improved OER and HER performance.
研究领域:
材料科学
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电化学
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能源科学
✓ 已验证
产品关联
DOI
高影响因子
RSC Advances
·
2020
·Vol. 10
·期 54
·32919-32926
·
IF 3.119
Pengli Zuo,Zhongguang Chen,Fengling Yu,Jinyu Zhang,Wei Zuo,Yanli Gao,Qingyou Liu
Heteroatom doping in carbon dots (CDs) was found to be an efficient way to regulate the structure of electronic energy levels and enhance the fluorescence characteristics of CDs. Nevertheless, most reported fabrication processes of heteroatom-doped CDs are rigorous and complex. Herein, a facile and novel strategy was developed to rapidly prepare nitrogen and phosphorus co-doped CDs (N,P-CDs) using acetic acid as the carbon source, and arginine, 1,2-ethylenediamine (EDA) and diphosphorus pentoxide as the dopants, respectively. The optical, morphological and structural characterizations of the synthesized N,P-CDs were investigated via UV and photoluminescence spectroscopy, X-ray photoelectron spectroscopy, TEM, and FT-IR spectroscopy. The N,P-CDs display outstanding fluorescence stability under high ionic strength (1.6 M KCl), and long time UV irradiation, indicating that they can be used as favorable candidates for fluorescent probes. The fluorescence of N,P-CDs was selectively quenched by chloramphenicol (CAP) with a short response time. The linear range of the response to CAP was from 0.8 to 70 μM with a limit of detection of 0.36 μM (S/N = 3). Notably, the fabricated N,P-CDs were employed for the highly selective and sensitive detection of CAP in milk samples, indicating their potential applications in biologically related areas.
研究领域:
分析化学
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生物医学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
NEW JOURNAL OF CHEMISTRY
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2022
·Vol. 46
·期 6
·3017-3025
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IF 3.925
Wen-Feng Wang,Li-Qi Qiu,Kai-Hong Chen,Hong-Ru Li,Lie-Feng Feng,Liang-Nian He
Photocatalytic CO2 reduction to valuable chemicals, especially fuels, is considered as a promising strategy to mitigate CO2 accumulation and tackle the energy crisis, among which photocatalysis is vital to achieve efficient and selective reduction of CO2. In this work, phosphorus-doped hollow polygonal g-C3N4 rods were prepared through phosphoric acid assisted self-assembly under hydrothermal conditions and subsequent thermal polymerization using phosphoric acid as the phosphorus source and melamine as the nitrogen-rich precursor. The resulting phosphorus-doped hollow polygonal g-C3N4 rods feature increased specific surface area, visible light absorption and photogenerated carrier separation and transfer efficiency according to the structure and photoelectric properties characterization. Coupled with an earth abundant metal-based complex, i.e. [Co(bpy)3]Cl2, as a co-catalyst, the phosphorus-doped hollow polygonal g-C3N4 rods deliver a CO evolution rate of up to 447.5 μmol g−1 h−1 with a selectivity of ca. 96%, being much higher compared to the pristine g-C3N4 (67.01 μmol g−1 h−1 with a selectivity of ca. 94%) resulting from the improved light harvesting and charge transfer to the co-catalyst. Remarkably, the phosphorus-doped hollow polygonal g-C3N4 rods can be reused 6 times while retaining constant catalytic activity in the photoreduction reaction. This work presents new insights into photocatalytic CO2 reduction by developing non-metal doping and hollow structural designs for semiconductor photocatalysts.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
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2025
·
IF 6.3
Longyan Zhang,Gang Zhao,Xinming Wu
Molybdenum disulfide (MoS 2 ) has been widely studied in supercapacitors due to its high theoretical capacity, but the lower intrinsic conductivity limits its further application. In this paper, Al, P-doped MoS 2 was grown in situ on carbon cloth using a one-step hydrothermal method, respectively, and the implementation of the doping strategy increased the layer spacing of MoS 2 while synergistically improving the conductivity and specific capacitance of the material. The results show that Al, P doping not only enhance the conductivity of pristine MoS 2 by 35.8% and 21.1%, respectively, but also improve the specific capacitance from 284.4 F g -1 (at a current density of 0.5 A g -1 ) to 424.6 F g -1 and 449.2 F g -1 , respectively. Surprisingly, the ASC device assembled with Al 0.05 -MoS 2 as the positive electrode and P 0.05 -MoS 2 as the negative electrode achieved an energy density of 30.07 Wh kg -1 at a power density of 1259.99 W kg -1 . These results demonstrate the superiority of Al, P-doped MoS 2 nanoflowers for high-performance supercapacitor applications.
研究领域:
材料科学
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能源存储
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF POWER SOURCES
·
2025
·
IF 7.9
Shengzu Xiao,Zhengyao Sun,Zehao Zhang,Pin Ma,Haibo Li
The application of Mo 2 CT x MXene as an anode for lithium-ion batteries (LIBs) is severely limited by the little electrochemical active sites and large diffusion energy barrier of lithium ions. Creating heterostructures between MXene and high-performance secondary materials with unique structure and tunable electron arrangement is an effective strategy. Herein, the heterostructure of P-doped MoO 2 and Mo 2 CT x (Mo 2 CT x /MoO 2 -P) with built-in-electric field and rich oxygen vacancies is constructed to co-regulate the electrochemical performance of battery. This design enables the material with high electronic density of states, improved ability of lithium adsorption and diffusion as well as strong structural stability. As a result, the as-prepared Mo 2 CT x /MoO 2 -P anode delivers excellent rate performance (301.3 mAh g −1 at 5 A g −1 ) and long cycle stability (1062.13 mAh g −1 at 1350 cycles at 2 A g −1 and 345.5 mAh g −1 at 4500 cycles at 5 A g −1 ), which are superior to that of previously reported Mo 2 CT x -based anode materials. Moreover, the Mo 2 CT x /MoO 2 -P||LiCoO 2 full cell offers 341.4 mAh g −1 after 200 cycles at 1 A g −1 , confirming the practicality of Mo 2 CT x /MoO 2 -P.
研究领域:
材料科学
·
能源存储
✓ 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）