CHEMISTRY OF MATERIALS
·
2024
·
IF 7.2
Xiangdong Li,Kangchi Zhang,Wentao Liang,Cheng Zhong,Di Mai,Azizur Rahman,Xiaoyu Sun,Rucheng Dai,Zhongping Wang,Qiang Wu,Zengming Zhang
Recently, hydrogen sulfide (H2S) and phosphine (PH3) have attracted great attention since the observation of superconducting transitions with high crucial temperatures under high pressure, which inspired subsequent investigations of the superconductivity of nonmetallic hydrides. Here, we report the successful photochemical and thermal syntheses of a series of novel H2S–PH3–H2 ternary hydrides with varying H2S and PH3 molar ratios. Raman, infrared, UV–visible absorption spectra, and electrical transport measurements are employed to investigate the chemical reaction and electronic structure transformation under high pressure. The pressure-induced polymerization of PH3 can be confirmed in H2S–PH3–H2 by Raman and infrared spectra, and the polymerization product, P4H6, can be recovered to ambient pressure; additionally, the polymerization pressure of PH3 is evidently hampered with increasing H2S concentration. Furthermore, it has been found that low temperatures can significantly inhibit the pressure-induced polymerization of PH3. The formation of Hittorf’s phosphorus is experimentally confirmed upon unloading pressure from 100 GPa to ambient pressure, which strongly implies the decomposition of P4H6 under high pressure. The H2S–PH3–H2 molecule gradually turns red and is eventually opaque following compression, which is consistent with the red shift of the UV–visible absorption spectra. Furthermore, synchrotron infrared absorption spectra and electrical transport examined above 65 GPa indicate the insulator-to-metal transition of H2S–PH3–H2 caused by dehydrogenated polymerization of P4H6 to Hittorf’s phosphorus.
✓ 已验证
产品关联
DOI
高影响因子
Biomaterials Research
·
2024
·
IF 8.1
Lin Liu,Yucen Yao,Yang Liu,Bingrong Hong,Ziqing Li,Xuejun Chen,Yaofeng Zhang,Hongbo Fu,Degong Yang,Chunrong Yang
Management of myocardial ischemia–reperfusion injury (MIRI) in reperfusion therapy remains a major obstacle in the field of cardiovascular disease, but current available therapies have not yet been achieved in mitigating myocardial injury due to the complex pathological mechanisms of MIRI. Exogenous delivery of hydrogen sulfide (H 2 S) to the injured myocardium can be an effective strategy for treating MIRI due to the multiple physiologic functions of H 2 S, including anti-inflammatory, anti-apoptotic, and mitochondrial protective effects. Here, to realize the precise delivery and release of H 2 S, we proposed the targeted H 2 S-mediated gas therapy with pH-sensitive release property mediated by platelet membranes (PMs). In this study, a biomimetic functional poly(lactic-co-ethanolic acid) nanoparticle (RAPA/JK-1-PLGA@PM) was fabricated by loading rapamycin (RAPA; mTOR inhibitor) and JK-1 (H 2 S donor) and then coated with PM. In vitro observations were conducted including pharmaceutical evaluation, H 2 S release behaviors, hemolysis analysis, serum stability, cellular uptake, cytotoxicity, inhibition of myocardial apoptosis, and anti-inflammation. In vivo examinations were performed including targeting ability, restoration of cardiac function, inhibition of pathological remodeling, and anti-inflammation. RAPA/JK-1-PLGA@PM was successfully prepared with good size distribution and stability. Utilizing the natural infarct-homing ability of PM, RAPA/JK-1-PLGA@PM could be effectively targeted to the damaged myocardium. RAPA/JK-1-PLGA@PM continuously released H 2 S triggered by inflammatory microenvironment, which could inhibit cardiomyocyte apoptosis, realize the transition of pro-inflammation, and alleviate myocardial injury demonstrated in hypoxia/reoxygenation myocardial cell in vitro. Precise delivery and release of H 2 S attenuated inflammatory response and cardiac damage, promoted cardiac repair, and ameliorated cardiac function proven in MIRI mouse model in vivo. This research outlined the novel nanoplatform that combined immunosuppressant agents and H 2 S donor with the pH-sensitive release property, offering a promising therapeutic for MIRI treatment that leveraged the synergistic effects of gas therapy.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SURFACE & COATINGS TECHNOLOGY
·
2024
·
IF 5.3
Chenhao Huang,Kaiwen Zhang,Chenxi Zhang,Jing Yan,Hongyuan Fan,Lan Sun,Jun Wang
The extraction and transportation of oil and gas pose significant challenges due to corrosive environments, particularly hydrogen sulfide (H 2 S) exposure. This study investigates the use of polytetrafluoroethylene (PTFE) to enhance the corrosion resistance of nickel‑phosphorus (Ni P) coatings in H 2 S-rich environments. Electroless deposition was employed to prepare Ni-P/PTFE coatings, which were then subjected to simulated H 2 S corrosion tests. Results indicate that the incorporation of PTFE led to a more uniform Ni P coating with reduced porosity, significantly improving corrosion resistance. The coatings exhibited enhanced protective performance by stabilizing corrosion product layers and preventing the formation of corrosion channels. Ni-P-PTFE coatings overcame the existing research challenge of Ni P coatings' corrosion in H2S environments, showing no penetration of the corrosive medium into the substrate after 720 h of immersion. The corrosion rate of the coating is only 0.0261 mm/year, only 4.27 % of the corrosion rate of the L245NS substrate in the early stage of corrosion. Moreover, after characterization by SEM, XRD and XPS, it was found that the presence of PTFE altered the corrosion mechanism, promoting the formation of stable nickel sulfide and oxide layers on the surface. This study sheds light on the mechanisms underlying PTFE-enhanced corrosion resistance in Ni P coatings, offering promising implications for extending the lifespan of equipment in the oil and gas industry.
研究领域:
材料科学
·
腐蚀与防护
✓ 已验证
DOI
高影响因子
JOURNAL OF CHEMICAL THERMODYNAMICS
·
2019
·
IF 2.29
Zhijun Zhao,Ying Huang,Zhaohuan Zhang,Weiyang Fei,Mingsheng Luo,Yongsheng Zhao
Currently, solvent-based absorption is known as an effective technology to capture acid gases, e.g., CO 2 or H 2 S. In this work, the constant-volume method is used to determine CO 2 and H 2 S solubility in propylene carbonate (PC), imidazolium-based ionic liquids (ILs): 1-butyl-3-methylimidazolium tetrafluoroborate [Bmim][BF 4 ], 1-hexyl-3-methylimidazolium tetrafluoroborate [Hmim][BF 4 ], and 1-octyl-3-methylimidazolium tetrafluoroborate [Omim][BF 4 ], and their mixtures at temperature from 303.15 to 333.15 K under pressures up to about 1 MPa. Besides, the quantum chemistry-based COSMO-RS models are used to predict the vapor pressure and the solubility in these solvents. The experimental results illustrate that adding [Omim][BF 4 ] into PC can improve the CO 2 and H 2 S solubility and the H 2 S/CO 2 selectivity compared with the pure PC, which increases with the increasing [Omim][BF 4 ] mass fraction in the mixtures. The simulation with COSMO-RS shows the vapor pressures of PC in the mixtures decreases with the increasing [Omim][BF 4 ] mass fraction. Moreover, the prediction results show that COSMO-RS-Lei model is in much better agreement than COSMO-RS (ADF 2005) for predicting both CO 2 and H 2 S solubility and the prediction accuracy of CO 2 is better than that of H 2 S. Finally, the mixtures of PC and [Omim][BF 4 ] may be used as promising physical solvents to capture CO 2 and H 2 S selectively with high partial pressures because they connect the advantages of organic solvents and ILs.
研究领域:
化学工程
·
环境科学
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9.1
Kunlin Li,Wei Guo,Yu Tian,Kai Li,Ping Ning,Xueyan Chen,Fei Wang,Changbin Zhang
Carbon-based materials are widely used for H 2 S oxidation, yet their performance under ambient conditions requires further improvement via precise structural engineering. In particular, existing MgO-modified carbon materials still suffer from suboptimal H 2 S removal capacity, limited regenerability, and/or complicated synthesis processes, which restrict their practical application in room-temperature desulfurization. In this work, we report MgO/N-doped carbon catalysts synthesized by an NH 3 ·H 2 O-modulated citric acid complexation method, which demonstrated superior activity for ambient H 2 S oxidation. It was shown that the introduction of NH 3 ·H 2 O induced the formation of NH 4 NO 3 in pyrolysis precursors, and the decomposition of NH 4 NO 3 during pyrolysis created abundant carbon defects and also incorporated pyridinic/pyrrolic N species. These defects anchor Mg ions, leading to the formation of well-dispersed MgO nanosheets that enhanced surface basicity and facilitated H 2 S dissociation. Meanwhile, the defect-rich structure significantly improved O 2 activation to generate reactive 1 O 2 species for efficient H 2 S oxidation. The optimized MNC-3 delivered an exceptional H₂S capacity of 2.41 g/g cat. with 55 h breakthrough time at room temperature, and retained 0.78 g/g cat. after three regeneration cycles. This work provides a rational design strategy for high-performance, cost-effective room-temperature desulfurization materials through integrated modulation of active phase morphology, nitrogen doping, and carbon defects.
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Energy Materials
·
2026
·
IF 5.5
Yuyu Ma,Yi Dong,Deng Li,Yi Cao,Yuqin Wang,Juhong Lian,Wei Yu,Ruibin Jiang,Junqing Yan,Shengzhong Liu,Shanshan Chen
Solar-driven CO2 conversion via photovoltaic-powered electrolysis offers a sustainable route for carbon utilization and renewable energy storage, yet its current output is still constrained by the low-value yield of the anodic reaction. Herein, we rationally designed a solar-compatible paired electrolysis system by coupling cathodic CO2 reduction reaction (CO2RR) with anodic off-field H2S oxidation reaction (OFSOR) mediated by the I3−/I− redox couple, enabling synchronous production of high-value formate and elemental sulfur with significantly reduced energy input. An acid-tolerant Bi-based metal−organic framework (Bi-MOF) precursor was fabricated and underwent in situ structural reconstruction to form Bi2O2CO3 as an active phase for CO2RR with a formate faradaic efficiency (FE) exceeding 90% over a wide current density range. In situ Raman spectroscopy confirmed the formation of key *HCOO− intermediates over the Bi2O2CO3, accounting for the superior formate selectivity. By coupling with the carbon cloth anode, a two-electrode CO2RR-OFSOR electrolyzer was assembled, delivering a current density of 50 mA/cm2 at a cell voltage of only 2.91 V and reducing cell voltage by 41% under the tested conditions as compared to the conventional CO2RR-OER configuration. Furthermore, a self-driven solar-powered photovoltaic-electrochemical device was established by directly powering the electrolyzer with commercial silicon photovoltaic cells, which steadily operates with formate FE above 90% and achieves a solar-to-chemical conversion efficiency of 4.6%. This work provides a promising and energy-efficient solar-driven integrated strategy for collaborative CO2 conversion and H2S resource utilization, highlighting the potential of hybrid electrolysis systems in sustainable electrosynthesis.
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2026
·
IF 14.1
Yunfei Wang,Min Zhang,Rui Li,Xiaolong Yao,Zhaofeng Wu,Fengdong Qu,Shan Qiu,Zhenjiang Li
High-performance gas sensors with extreme sensitivity and rapid response kinetics are fundamental to sub-ppm H 2 S detection, which is crucial for environmental monitoring and industrial safety. However, most conventional rare-earth ferrites have relatively sluggish responses at low concentrations because of thermodynamic and kinetic constraints and inherently high surface reaction barriers. Herein, a high-entropy perovskite oxide with the composition (Gd 0.2 Tb 0.2 Dy 0.2 Ho 0.2 Er 0.2 )FeO 3 was designed and synthesized using a wet-chemical method. The incorporation of multiple principal elements induced strong local lattice distortion and generated abundant chemically heterogeneous active sites. Furthermore, the application of an external magnetic field significantly optimized electron transfer pathways and accelerated the surface redox reaction kinetics. Our results reveal that the synergistic coupling between high-entropy-induced structural distortion and weak magnetic field modulation breaks the traditional response-recovery trade-off, yielding a 6-fold sensitivity enhancement over conventional counterparts, an ultrafast 1.72 s recovery time, and an H 2 S detection limit of 0.5 ppm. This strategy, which integrates local coordination reconstruction with spin-state intervention, is expected to be widely applicable to the development of next-generation intelligent sensing systems.
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF HAZARDOUS MATERIALS
·
2026
·
IF 10.6
Xingyu Chen,Lulu Xu,Shuai Liu,Yijun Liu,Yuehui Hou,Linxiang Liu,Ling Wang,Junfeng Wu,Hao Zhang
Flexible PANI/Ti 3 C 2 T x /Cu 2 O H 2 S sensor achieves 0.456 ppb LOD, 24.72% ppm −1 sensitivity, and 55/35 s response-recovery at RT. • Enhanced sensing arises from synergistic charge transport, heterojunction amplification, and reduction of PANI. • A portable wireless system enables real-time H 2 S monitoring during shrimp spoilage for food safety warning. Hydrogen sulfide (H 2 S), a highly toxic gas released during meat spoilage, necessitates room-temperature real-time detection for accurate freshness assessment and potential health hazards mitigation. In this work, an ultra-sensitive flexible H 2 S sensor was developed by depositing a polyaniline/MXene/cuprous oxide (PANI/MXene/Cu 2 O) ternary nanocomposite onto a flexible substrate, and it operates reliably at room temperature. The sensing material was synthesized via in-situ polymerization of PANI on titanium carbide (Ti 3 C 2 T x ) MXene, followed by the strategic integration of Cu 2 O microparticles to construct a hierarchical heterostructure. The sensor exhibits a high response sensitivity of 24.72% ppm −1 , a low theoretical detection limit of 0.456 ppb, and fast response/recovery times of 55 s and 35 s. It also delivers good selectivity, repeatability, long-term stability, and mechanical flexibility. A signal acquisition circuit integrating an OPA333 precision amplifier and a microcontroller was assembled for real-time quantitative detection of H 2 S release during shrimp spoilage, enabling effective tracking of H 2 S accumulation and discrimination of freshness stages. The enhanced gas-sensing performance stems from the synergistic combination of the highly conductive Ti 3 C 2 T x network, the p-p heterojunction between PANI and Cu 2 O, and the reduction reaction of PANI with H 2 S, which facilitates rapid charge transport and effectively modulates the interfacial energy band alignment upon H 2 S exposure. This study provides an effective strategy for designing high-performance room-temperature flexible gas sensors for real-time meat freshness assessment. Download: Download high-res image (251KB) Download: Download full-size image
✓ 已验证
DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2025
·
IF 9
Yuan Li,Sisi Pan,Hongyan Li,Ying Zhao,Jie Zhao,Ping Ning,Kai Li
The selective oxidation of H 2 S into elemental sulfur is considered as one promising method for the removal of this undesired gas. Second heterogeneous atom introducing into N doped carbocatalyst skeleton shows their potential on the enhancement of selectivity. We developed a novel N, S co-doped porous carbon with high pyridinic content and mesoporous pore structure for H 2 S selective oxidation. The experimental results showed that the optimized catalyst exhibits excellent durability about 133 h with 100 % conversion and 95 % elemental sulfur selectivity at 180 °C. Kinetic study and density functional theory calculation reveals that sulfur doping could regulate the electronic structure of N atom on the carbocatalyst surface and further weaken the interactions between N active site and H 2 S molecule, then prevent deep oxidation of H 2 S. The work provides a strategy for atomic-level modulation of non-metal doping catalysts, enabling selective oxidation process for efficient and durable desulfurization.
研究领域:
催化化学
·
环境化学
·
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Cong Peng,Lihua Jiang,Chen Qu,Jinhua Liu,Peng Zhao,Yifan Ren,Chuandong Wu,Jiemin Liu
The development of sensing materials capable of detecting H 2 S with ultrasensitivity and practicability is essential. To address this need, an Au and Sc co-modification strategy was proposed to boost the gas-sensing sensitivity of In 2 O 3 to H 2 S. In 2 O 3 and a sequence of binary (Au-In 2 O 3 and Sc x In (2-x) O 3 ) and ternary (Au-Sc x In (2-x) O 3 ) nanofibers (NFs) with different compositions were fabricated by electrospinning-calcination. Morphology characteristics revealed that the doping of Sc led to a reduction in the grain size, whereas the modification of Au induced an increase in the surface roughness of the NFs. Notably, after evolving pristine In 2 O 3 to the co-modified composites, the sensors exhibited an appreciable increase in sensitivity to H 2 S (from 0.51/ppm to 4.41/ppm), and ultralow detection limit of 5 ppb (measured) and 0.82 ppb (calculated). Moreover, the optimal Au-Sc x In (2-x) O 3 sensor exhibited preferable practicability, including selectivity (selectivity coefficient > 7), repeatability (RSD < 0.95 %, n = 7), stability (response decreased 4.3 % over 30 days), and moisture resistance (decreased 15 % at 88 % RH). Ultraviolet photo-electron spectroscopy and UV–vis spectroscopy analysis revealed that the enhanced performance was attributed to the formation of Au-Sc x In (2-x) O 3 heterojunctions, the electronic and chemical sensitization effect of Au, and the synergistic effect between Sc and Au.
研究领域:
材料科学
·
气体传感技术
·
纳米材料
·
环境监测
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Huan Huang,Zhiyuan Meng,Yangmei Wu,Lingfeng Sun,Ting Li,Zhonglong Wang,Yiqin Yang
The accurate detection of hydrogen sulfide (H 2 S) and biothiols (cysteine, homocysteine, and glutathione) is critical due to their roles in human health and disease. Conventional micromolecular probes suffer from the ACQ effect, limiting their processability. To address this, we developed EC-NPCB , a macromolecular probe based on ethyl cellulose grafted with flavonol derivatives, which effectively suppresses ACQ effect. EC-NPCB exhibits rapid fluorescence response (2–4 min) and ultra-low detection limits (LOD) of 64.8 nM (H 2 S), 43.1 nM (Cys), 43.0 nM (Hcy), and 91.5 nM (GSH). Compared to its micromolecular probe MNPCB , EC-NPCB showed >10-fold improved photostability. Practical applications include real-time H 2 S monitoring in red wine and spoilage assessment in prawn and pork, validated against total volatile basic nitrogen (TVBN) values. Furthermore, EC-NPCB was integrated into portable test paper, enabling field-deployable food freshness detection, with significant implications for food safety and public health.
研究领域:
分析化学
·
材料科学
·
食品安全
·
荧光传感
·
高分子化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
EES Catalysis
·
2025
·
IF 8.1
Ganchang Lei,Jiayin Wang,Xinhui Liu,Shiping Wang,Lijuan Shen,Shijing Liang,Yingying Zhan,Lilong Jiang
Developing efficient strategies that convert industrial waste hydrogen sulfide (H2S) into value-added products is meaningful for both applied environmental science and industrial chemistry. Here we report a series of heterogeneous N-doped carbon catalysts with synergistic C-N sites that enable the nucleophilic addition of H2S into aromatic nitrile compounds (PhCN) under mild conditions to produce thiobenzamide (PhCSNH2). The as-designed C-N sites achieve a high thioamide production rate of 26400 μmolPhCSNH2/L·h and a notable selectivity of ca. 80% at 60 °C within a short 2-hour timeframe. Additionally, the catalyst exhibits easy recyclability and maintains high stability over ten cycles during a 6-month period. Systematic microscopic and in situ spectroscopic characterizations, combined with theoretical calculations, reveal that C-pyridinic N coordination sites effectively lower the adsorption energy barrier of the crucial intermediate *PhCSHNH, offering a dynamically favorable pathway for PhCSNH2 production. Furthermore, the protocol demonstrates excellent compatibility with various substituted substrates, providing access to a diverse range of thioamides.
✓ 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）