BMC PLANT BIOLOGY
·
2022
·Vol. 22
·期 1
·1-14
·
IF 5.26
Cheng Pengfei,Feng Liying,Zhang Shuoyu,Li Longna,Guan Rongzhan,Long Weihua,Xian Zhihui,Zhang Jiefu,Shen Wenbiao
Background Cold stress adversely influences rapeseeds ( Brassica napus L.) growth and yield during winter and spring seasons. Hydrogen (H 2 ) is a potential gasotransmitter that is used to enhance tolerance against abiotic stress, including cold stress. However, convenience and stability are two crucial limiting factors upon the application of H 2 in field agriculture. To explore the application of H 2 in field, here we evaluated the role of ammonia borane (AB), a new candidate for a H 2 donor produced by industrial chemical production, in plant cold tolerance. Results The application with AB could obviously alleviate the inhibition of rapeseed seedling growth and reduce the oxidative damage caused by cold stress. The above physiological process was closely related to the increased antioxidant enzyme system and reestablished redox homeostasis. Importantly, cold stress-triggered endogenous H 2 S biosynthesis was further stimulated by AB addition. The removal or inhibition of H 2 S synthesis significantly abolished plant tolerance against cold stress elicited by AB. Further field experiments demonstrated that the phenotypic and physiological performances of rapeseed plants after challenged with cold stress in the winter and early spring seasons were significantly improved by administration with AB. Particularly, the most studied cold-stress response pathway, the ICE1-CBF-COR transcriptional cascade, was significantly up-regulated either. Conclusion Overall, this study clearly observed the evidence that AB-increased tolerance against cold stress could be suitable for using in field agriculture by stimulation of H 2 S signaling.
研究领域:
植物学
·
农业科学
✓ 已验证
DOI
高影响因子
RSC Advances
·
2023
·Vol. 13
·期 50
·35562-35568
·
IF 3.9
Fenglong Wu,Jin Song
Herein, we synthesized a hydrophilic support formed from amorphous Cr2O3 and KIT-6 containing P123 using a simple solvent-free thermal method for Co species. The obtained catalyst (denoted as Co/Cr2O3-F-X) exhibits high activity for hydrogen production from ammonia borane (NH3BH3). The optimal Co/Cr2O3-F-0.5 exhibits the highest catalytic performance with the turnover frequency (TOF) value of 111.1 min−1. Advanced characterizations suggest the high catalytic performance is attributed to the synergistic effect of the strong interaction between amorphous Cr2O3 and KIT-6 containing P123 and improved wettability of the catalyst.
研究领域:
催化化学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ENERGY & FUELS
·
2021
·
IF 3.605
Yunfei Yan,Jianbo Li,Tao Jia,Haojie Li,Kaiming Shen,Ziqiang He
TiO2-based photocatalysts are promising materials that show great potential in the field of catalysis due to their excellent properties including nontoxicity, high photocatalytic performance, and outstanding thermal and chemical stability. However, several challenges exist regarding TiO2 applications for catalytic hydrogen production. In this work, Fe- and graphene-comodified TiO2 (Fe–rGO/TiO2) was synthesized via a two-step solvothermal method. In addition, the effect of Fe3+ and graphene addition upon the catalytic performance of TiO2 was investigated based on the ammonia borane hydrogen production reaction, and the catalysts were characterized by SEM, XRD, XPS, UV–vis, FT-IR, and Raman methods. Batch experiments showed that the synthesized Fe–rGO/TiO2 composites exhibited high photocatalytic performance for hydrogen production from ammonia borane under visible-light irradiation. Moreover, the highest photocatalytic hydrogen production rate (1235.32 μmol·min–1·gcat–1) of 2%Fe–1%rGO/TiO2 was observed under visible-light irradiation at 25 °C, and the photocatalytic activity of the sample remained almost unchanged after the fifth cycle. The XRD, XPS, FT-IR, and Raman analyses showed that Fe and graphene successfully modified TiO2 and the presence of Ti4+. In addition, the extended visible-light absorption range and a reduction of the band gap of Fe–rGO/TiO2 were demonstrated by UV–vis diffuse reflectance spectra and calculation of the band gap. Also, the preparation of hydrogen from the hydrolysis of ammonia borane photocatalyzed by TiO2 composites was discussed. These findings are crucial for designing TiO2-based photocatalysts with high performance for photocatalytic hydrogen production.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2017
·
IF 3.582
Junhong Luo,Jinchuan Wang,Xingwen Feng,Jinguang Cai,Weizhi Yao,Jiangfeng Song,Changan Chen,Deli Luo
In this paper, we report an in-depth study of the post-milled 4AB/Mg 2 NiH 4 sample, with a special focus on the promoting mechanism of Mg 2 NiH 4 on the dehydrogenation of AB. A combination of X-ray diffraction (XRD), Fourier transformation infrared (FTIR) spectroscopy, X-ray photoelectron spectroscopy (XPS), scanning electron microscope (SEM) characterizations, together with selective isotopic labelling and other designed experiments, revealed that AB and Mg 2 NiH 4 react with each other from the starting phase of the dehydrogenation process, which eventually results in the formation of Mg Ni B N H complexes. On the other hand, it was found that the reaction between AB and Mg 2 NiH 4 cannot proceed directly, but requires phase transition of normal AB to its mobile phase AB* to occur first. Hence, the promoting mechanism of Mg 2 NiH 4 on the dehydrogenation of AB is attributed to its promoting effect on phase transition of normal AB to AB* under mild conditions and in particular its chemical modification of AB with Mg and Ni.
研究领域:
材料科学
·
化学
✓ 已验证
DOI
高影响因子
Energy & Environmental Materials
·
2021
·Vol. 6
·期 1
·e12292
·
IF 15.122
Ruofan Shen,Yanyan Liu,Hao Wen,Xianli Wu,Zhikun Peng,Sehrish Mehdi,Tao Liu,Huanhuan Zhang,Shuyan Guan,Erjun Liang,Baojun Li
The dissociation of water is the rate-determining step of several energy-relating reactions due to high energy barrier in homolysis of H-O bond. Herein, engineering vacancy-atom ensembles via injecting oxygen vacancy (V O ) into single facet-exposed TiO 2 -Pd catalyst to form V O -Pd ensemble is proposed and implemented. The outstanding activity of as-prepared catalyst, 1.5-PdTV O , toward water dissociation is established with a turnover frequency of 240 min −1 in ammonia borane hydrolysis at 298 K. Density functional theory simulation suggests that the V O -Pd ensemble is responsible for the high intrinsic catalytic activity. Water molecules tend to be dissociated on V O sites and ammonia borane molecules on Pd atoms. Those H atoms from water dissociation on V O combine with H atoms from ammonia borane on Pd atoms to generate H 2 . This insights into engineering vacancy-atom ensembles catalysis provide a new avenue to design catalytic materials for important energy chemical reactions.
研究领域:
材料科学
·
催化化学
·
能源化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2022
·
IF 7.139
Yang Luo,Yao Tian,Shiyu Yang,Jing Jiang,Aike Liu,Hejun Gao,Lunhong Ai
Efficient and controllable release of hydrogen from solid hydrogen storage materials is a promising way to produce hydrogen safely and on-demand. The development of economical, highly active, easily recyclable catalysts is critical for practical applications, which remains a great challenging. Herein, the easily controllable and cost-effective corrosion strategy is ingeniously developed to simply prepare ultralow-content ruthenium coupled with nickel hydroxide on nickel foam (Ru–Ni–NF). After experiencing the spontaneous oxidation-reduction reactions between the reactive NF and Ru 3+ , ultrafine Ru nanoparticles decorated nickel hydroxide nanosheets are in situ intimately grown on porous NF networks. The optimal Ru–Ni–NF catalyst exhibits the excellent performance for catalytic hydrolysis of ammonia borane with a high turnover frequency (TOF) of 539.6 mol H2 mol Ru −1 min −1 at 298 K and a low apparent activation energy of 36.4 kJ mol −1 , due to the synergistic effect between Ru nanoparticles and nickel hydroxide nanosheets. Furthermore, the Ru–Ni–NF catalyst possesses easy separation and outstanding durability, which is superior to powdered catalysts. This study provides a facile and economical strategy for the preparation of ultralow-content noble metal supported metal foam-type catalysts for dehydrogenation of ammonia borane.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Huanhuan Zhang,Qunying Sun,Linyan Bian,Qiuming Peng,Shumin Han,Baozhong Liu,Yanping Fan
Developing noble-based catalysts with high activity is the key to realizing high-efficiency hydrogen generation. Herein, PdRh alloys with different ratios supported on active Ti 3 C 2 is designed by microwave-assisted reduction to enhance the dissociation of NH 3 BH 3 and H 2 O. Specially, Pd 1 Rh 4 /Ti 3 C 2 conveys an optimal turnover frequency ( TOF ) of 338 min −1 and activation energy ( E a ) of 33.8 kJ mol −1 at room temperature. The TOF of Pd 1 Rh 4 /Ti 3 C 2 is 7.3 times than that of Pd/Ti 3 C 2 and 4.8 times of Rh/Ti 3 C 2 because of the construction of dual-active sites of PdRh alloy and active Ti 3 C 2 . The introduction of a small number of Pd changes the chemical environment of catalysts and presents significant excitation effect on catalytic activity. Experimental investigation reveals PdRh alloy and active Ti 3 C 2 are beneficial for the adsorption and dissociation of NH 3 BH 3 and H 2 O (active Ti 3 C 2 activates H 2 O, PdRh activates NH 3 BH 3 ). This research provides experimental foundation for the design of noble-based catalysts with high catalytic activity.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Muhammad Asim,Alibek Kurbanov,Bushra Maryam,Muhammad Ajmal,Chenxiang Shi,Lun Pan,Ji-Jun Zou
Incorporating g-C 3 N 4 with transition metal phosphides is emerging as a low-cost and robust co-catalyst for hydrogen evolution . The ammonia borane hydrolysis is an efficient method to release H 2 at ambient conditions in the presence of a catalyst. An efficient and cheap catalyst is needed for practical application to achieve this benchmark. For this purpose, a catalyst Ni 2 P/C 3 N 4 is synthesized by hydrothermal method and low-temperature phosphidation. The optimization reveals that the Ni 2 P/C 3 N 4 with 6.5% Ni contents shows the best performance for H 2 release. Furthermore, 2% Pt nanoparticles loading over Ni 2 P/C 3 N 4 boosts the charge transfer and improves activity 5.7-fold compared to Ni 2 P/C 3 N 4 , and the Pt-loaded catalyst is depicted as Pt@Ni 2 P/C 3 N 4 . The reaction kinetics reveals that the hydrogen evolution rate accelerates by increasing the amount of Pt@Ni 2 P/C 3 N 4 and AB concentration, and the loading of Pt nanoparticles loaded over Ni 2 P/C 3 N 4 reduces the activation energy significantly. Moreover, the ionic interaction between Pt and Ni 2 P/C 3 N 4 generates Ptᵟ + and (Ni 2 P/C 3 N 4 )ᵟ − active sites which facilitates B–H cleavage and O–H bonds of ammonia borane and water, respectively. Incorporating transition metals phosphide and noble metals supported over g-C 3 N 4 paves the pathway toward the efficient H 2 evolution from ammonia borane, bringing cost-effective modifications to synthesize constructive catalysts.
研究领域:
材料科学
·
催化化学
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
·
2023
·
IF 7.2
Jin Song,Fenglong Wu,Yulun Lu,Xinyan Zhang
Doping as a common mean to generate defects to boost the catalytic performance of metal oxide semiconductor-based materials has aroused great interest. However, doping usually requires high temperatures and is time consuming. Herein, we report a facile strategy for the preparation of F doped CeO 2 (F–CeO 2 ) with assistance of the electrostatic attraction between F − and CeO 2 with oxygen vacancies at room temperature , then F–CeO 2 acts as superior support of metal Co nanoparticles (NPs) for efficient hydrolysis of NH 3 BH 3 under light irradiation . The activity of Co/F–CeO 2 is significantly enhanced and Co/F–CeO 2 -0.6 exhibited highest catalytic activity with TOF value 92.8 min −1 which increases 47% compared with Co/CeO 2 . Experimental and characterization results show the enhanced performance attributes to high efficiency photogenerated carrier separation and boosting adsorption capacity of H 2 O and NH 3 BH 3 over Co/F–CeO 2 due to F doped into CeO 2 crystallites . Furthermore, theory calculations further confirm that the band gap of F–CeO 2 becomes smaller and F–CeO 2 is more favorable the adsorption for H 2 O and NH 3 BH 3 than pure CeO 2 . This work offers a facile and time efficiency strategy to realize controllable element doped in metal oxide under ambient, and gives deep insights into the structure–activity relationship of catalyst between defect engineering and photocatalytic performance.
研究领域:
材料科学
·
化学工程
·
能源科学
✓ 已验证
DOI
高影响因子
ACS Applied Energy Materials
·
2024
·
IF 5.4
Hailiang Chu,Guangyao Li,Chuang Liu,Chenhui Cui,Yutong Li,Shujun Qiu,Yongpeng Xia,Yongjin Zou,Fen Xu,Lixian Sun
Currently, ammonia borane (AB, NH3BH3) hydrolysis is considered an available tactic for hydrogen evolution under ambient conditions, which includes many complex reaction steps, such as the activation and adsorption of AB and water molecules on the catalyst. Therefore, exploiting the high-performance catalysts with multiple active sites to match the multistep catalytic processes in AB hydrolysis is a critical and urgent task but a tough challenge. Herein, we propose a synthesis scheme for a high-entropy alloy (HEA) catalyst for hydrogen liberation from AB hydrolysis. The FeCoNiMnRu HEA with face-centered cubic (fcc) phase was synthesized by the polymer fiber nanoreactor method using low-cost transition metals of Co, Fe, Mn, and Ni as basic elements combined with the precious metal Ru, which facilitates the electron transfer and enhances the synergistic interaction between these elements, hence enhancing the catalytic activity toward AB hydrolysis to release hydrogen. For instance, the as-synthesized Fe23Co27Ni27Mn12Ru11 HEA catalyst shows superior activity in catalyzing AB hydrolysis with an apparent activation energy (Ea) of 42.3 kJ·mol–1 and a turnover frequency (TOF) of 55.3 molH2·molRu–1·min–1 at 298 K. This work affords a facile approach for the synthesis of low-cost and high-efficiency catalysts for AB hydrolysis to produce hydrogen.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
APPLIED CATALYSIS B-ENVIRONMENTAL
·
2024
·
IF 20.2
Yanyan Liu,Huanhuan Zhang,Jingjing Zhou,Shuyan Guan,Ruofan Shen,Wenbo Zhang,Xia Sheng,Lixia Wang,Xianji Guo,Xianli Wu,Jianchun Jiang,Baozhong Liu,Yongfeng Wang,Baojun Li
Proclaiming the interfacial active sites of non-noble metals on supported catalysts is a paramount topic. Herein, a spin-cross interface (Co(OH) x P y (x/y=3.2)) in the intimate region between Co(OH) 2 and CoP is designed by in situ hydroxylation and P-inducing strategy. An ultra-high catalytic hydrogen generation activity with a turnover frequency of 1640 min −1 is achieved for hydrolysis of ammonia borane (NH 3 BH 3 ). Both experimental observations and computational simulations reveal that the spin-cross interface dramatically reduces the energy barriers for the dissociation of reactant molecules (NH 3 BH 3 and H 2 O) to expedite the catalytic activity . The coexistence of active interface and MXene create the ensembles of Co atoms coordinated by OH and P. The construction of active sites of Co(OH) x P y simultaneously boosts the adsorption and dissociation of H 2 O and NH 3 BH 3 molecules. This research provides new paradigm for the rational design of spin-induced catalysts in the future energy system depending on the activation of multi-molecules.
研究领域:
材料科学
·
化学工程
·
能源研究
✓ 已验证
产品关联
DOI
高影响因子
Catalysts
·
2020
·Vol. 10
·期 9
·1037
·
IF 3.52
Zhaoyu Wen,Jie Wu,Guangyin Fan
Hydrogen generation through ammonia–borane (AB) hydrolysis has been regarded as one of the most promising pathways to tap renewable green energy. The design and synthesis of highly effective catalysts toward hydrogen production from aqueous AB is of paramount significance. Here, the facile synthesis of Rh nanoparticles (NPs) immobilized on nanodiamond (nano-DA) and concomitant AB hydrolysis to produce hydrogen was successfully achieved. The in situ generated Rh/nano-DA exhibited excellent catalytic activity toward AB hydrolysis, with a high turnover frequency (TOF) value of 729.4 min−1at 25 °C and a low activation energy of 25.6 kJ mol−1. Moreover, the catalyst could be reused four times. The unique properties of DA with abundant oxygen-containing groups enable the homogeneous distribution of small and surface-clean Rh NPs on the nano-DA surface, which can supply abundant accessible active sites for hydrogen evolution from AB hydrolysis. This study demonstrated that nano-DA can be applied as an ideal matrix to deposit efficient Rh nanocatalyst toward hydrogen evolution reaction.Keywords:nanodiamond;ammonia–borane;hydrogen evolution;rhodium nanoparticles
研究领域:
材料科学
·
催化化学
✓ 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）