Nature Communications
·
2025
·Vol. 16
·期 1
·1-11
·
IF 15.7
Long Haoyu,Zhang Xidong,Zhang Zhenyi,Zhang Jianjun,Yu Jiaguo,Yu Huogen
The H 2 -evolution kinetics play a pivotal role in governing the photocatalytic hydrogen-evolution process. However, achieving precise regulation of the H-adsorption and H-desorption equilibrium (H ads /H des ) still remains a great challenge. Herein, we propose a fine-tuning d - p hybridization strategy to precisely optimize the H ads /H des kinetics in a Ni-B x modified CdS photocatalyst (Ni-B x /CdS). X-ray absorption fine-structure spectroscopy and theoretical calculations reveal that increasing B-atom amount in the Ni-B x cocatalyst gradually strengthens the d - p orbital interaction between Ni 3 d and B 2 p , resulting in a consecutive d -band broadening and controllable d -band center on Ni active sites. The above consecutive d -band optimization allows for precise modulation of the H ads /H des dynamics in the Ni-B x /CdS, ultimately demonstrating a remarkable H 2 -evolution activity of 13.4 mmol g -1 h -1 (AQE = 56.1 %). The femtosecond transient absorption spectroscopy further confirms the rapid electron-transfer dynamics in the Ni-B x /CdS photocatalyst. This work provides insights into the optimal design of prospective H 2 -evolution catalysts.
研究领域:
材料科学
·
催化化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2022
·
IF 14.224
Sikpaam Issaka Alhassan,Haiying Wang,Yingjie He,Lvji Yan,Yuxin Jiang,Bichao Wu,Ting Wang,Haiying Gang,Lei Huang,Linfeng Jin,Yongsheng Chen
Bauxite is a widely available Al-O-rich mineral with great potential for abating fluoride. However, low adsorption capacity, a narrow workable pH range, and a lack of clarity on the best removal mechanism hinder its application. In this work, a highly efficient bauxite nanocomposite (Bx-Ce-La@500) was synthesized via doping and pyrolysis , and its fluoride adsorption in industrial wastewater was examined. Doping Ce/La synergistically improved the fluoride adsorption affinity of the composite (from pH PZC 8.0 ~ 10.0) and enhanced the •OH. The materials were characterized by SEM-EDS, BET, XRD, and TGA while XPS, FTIR, and DFT were used to investigate the mechanism of fluoride sorption . Results show that Bx-Ce-La@ 500 has a positive zeta potential of 26.3–23.1 mV from pH 1~ 10. The Langmuir model was the best fit with a maximum adsorption capacity of 88.13 mg/g and removal efficiency up to 100% in 50 ppm F − solution. The high F − removal was attributed to the enhanced surface affinity and the formation of adequate •OH on the material. Except for carbonate and phosphate ions, other ions exhibited negligible effects and the selective removal of F − in real wastewater was high. The main mechanism of adsorption was the ligand/ion exchange and electrostatic attraction.
研究领域:
环境科学
·
材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED POWDER TECHNOLOGY
·
2023
·
IF 5.2
Da Li,Jian Liu,Hulin Gao,Jiamei Hao,Yunlong Yu
The unavoidable presence of ionic substances in the ore pulp can adversely effects on the separation of pyrite from other valuable metal sulfide ores. Developing new reagents to eliminate this effect is of great significance. In this study, a novel approach was proposed to depress pyrite by utilizing sodium trithiocarbonate (Na 2 CS 3 ) as a depressant in the lime-CuSO 4 system. The results of the micro-flotation experiments showed that a low dosage of Na 2 CS 3 in the lime-CuSO 4 system could effectively depress pyrite. The presence of CuSO 4 in the solution which improves the ability of BX to adsorb on the surface of the pyrite was also revealed by the analysis of LEIS, UV–Vis, and contact angle, while the addition of Na 2 CS 3 effectively hindered the adsorption of BX. XPS and SEM-EDS analysis results showed that Na 2 CS 3 forms a complex with Cu 2+ and adsorbs onto the pyrite surface, thereby impeding the adsorption of the collector and effectively depressing pyrite.
研究领域:
矿物加工
·
化学工程
·
材料科学
✓ 已验证
DOI
高影响因子
JOURNAL OF ETHNOPHARMACOLOGY
·
2024
·
IF 4.8
Qianyi Wei,Yongrong Zhou,Zhengtao Hu,Ye Shi,Qing Ning,Keyun Ren,Xinyu Guo,Ronglin Zhong,Zhi Xia,Yinghao Yin,Yongxin Hu,Yingjie Wei,Ziqi Shi
Ethnopharmacological relevance Psoraleae Fructus (Bu Gu Zhi) is the fruit of Psoralea corylifolia L. (PCL) and has been used for centuries in traditional Chinese medicine formulas to treat osteoporosis (OP). A new drug called "BX" has been developed from PCL, but its mechanism for treating OP is not yet fully understood. Aim of the study To explore the mechanism of action of BX in the treatment of ovariectomy-induced OP based function-oriented multi-omics analysis of gut microbiota (GM) and metabolites. Materials and methods C57BL/6 mice were bilaterally ovariectomized to replicate the OP model. The therapeutic efficacy of BX was evaluated by bone parameters (BMD, BV/TV, Tb.N, Tb.Sp), hematoxylin and eosin (H&E) staining results, and determination of bone formation markers procollagen type Ⅰ amino-terminal peptide (PⅠNP) and bone-specific alkaline phosphatase (BALP). Serum and fecal metabolomics and high-throughput 16S rDNA sequencing were performed to evaluate effects on endogenous metabolites and GM. In addition, an enzyme-based functional correlation algorithm (EBFC) algorithm was used to investigate functional correlations between GM and metabolites. Results BX improved OP in OVX mice by increasing BMD, BV/TV, serum PⅠNP, BALP, and improving Tb.N and Tb.Sp. A total of 59 differential metabolites were identified, and 9 metabolic pathways, including arachidonic acid metabolism, glycerophospholipid metabolism, purine metabolism, and tryptophan metabolism, were found to be involved in the progression of OP. EBFC analysis results revealed that the enzymes related to purine and tryptophan metabolism, which are from Lachnospiraceae_NK4A136_group , Blautia , Rs-E47_termite_group , UCG-009, and Clostridia_UCG-014 , were identified as the intrinsic link between GM and metabolites. Conclusions The regulation of GM and restoration of metabolic disorders may be the mechanisms of action of BX in alleviating OP. This research provides insights into the function-oriented mechanism discovery of traditional Chinese medicine in the treatment of OP.
研究领域:
民族药理学
·
药理学
·
代谢组学
·
微生物组研究
·
传统中药
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）