ACS Omega
·
2022
·
IF 4.132
Xiubo Tian,Ying Chen,Yong Chen,Dong Chen,Quan Wang,Xiaohong Li
The removal of gaseous hydrogen sulfide using FeOCl/H2O2 was studied. The effects of the FeOCl dosage, the H2O2 concentration, the reaction temperature, and the gas flow rate on the removal of H2S were investigated. The reaction products were analyzed, and the characterization of FeOCl was carried out by X-ray diffraction, scanning electron microscopy, X-ray photoelectron spectroscopy, and electron paramagnetic resonance spectroscopy. Furthermore, radical quenching experiments were carried out using butylated hydroxytoluene, isopropanol, and benzoquinone. It was found that the H2S removal rate for a H2S gas concentration of 160 ppm reached 85.6% when bubbling through 100 mL of an aqueous solution containing FeOCl (1 g/L) and H2O2 (0.33 mol/L) at 293 K with a flow rate of 135 mL/min. Although the dissolution of chlorine in FeOCl was found to result in reduced catalytic performance, the activity was restored after soaking the catalyst in concentrated hydrochloric acid (37%) and subsequent calcination. The mechanism of H2S removal was also discussed, and it was found that this process was controlled by H2S diffusion. FeOCl was found to activate H2O2 and produce radicals, such as •OH and •O2–, resulting in the formation of a water film rich in radicals on the FeOCl surface. Following the diffusion of H2S into the water film, it underwent oxidation by radicals to produce SO42–. Overall, the catalyst and the product can be effectively separated.
研究领域:
环境科学
·
化学工程
✓ 已验证
DOI
PubMed
高影响因子
Analytical Methods
·
2015
·Vol. 7
·期 18
·7646-7652
·
IF 1.821
Sheng Chen,Chao Ma,Dong-En Wang,Xiang Han,Longlong Zhang,Jinyi Wang
Hydrogen sulfide (H2S) is the third endogenous gasotransmitter, following nitric oxide (NO) and carbon monoxide (CO). Efficient methods for selective monitoring H2S in biological systems are significant. In this study, we designed and synthesized a new coumarin-based probe DNPOCA for H2S with colorimetric and fluorescent dual signaling. In this probe, 7-hydroxycoumarin-4-acetic acid methyl ester was employed as a fluorophore and a dinitrophenyl (DNP) ether moiety was used as the recognition unit. The H2S probe exhibited excellent selectivity and high sensitivity with a detection limit as low as 49.7 nM. The cytotoxicity assay showed that DNPOCA possessed a low effect on cell viability. Furthermore, DNPOCA could be successfully applied for H2S imaging in living cells.
研究领域:
生物化学
·
医学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF PLANT PHYSIOLOGY
·
2024
·
IF 4
Miao Sun,Huan-Xuan Qiao,Tao Yang,Peng Zhao,Jun-Hao Zhao,Jia-Ming Luo,Hai-Ye Luan,Xiang Li,Sheng-Cai Wu,Ai-Sheng Xiong
Carrot ( Daucus carota L.), a widely cultivated economically vegetable from the Apiaceae family, is grown globally. However, carrots can be adversely impacted by cadmium (Cd) pollution in the soil due to its propensity to accumulate in the fleshy root, thus impeding carrot growth and posing health hazards to consumers. Given the potential of hydrogen sulfide (H 2 S) to improve plant resistance against Cd stress, we treated germinating carrot seeds with varying concentrations of sodium hydrosulfide (NaHS), aiming to alleviate the toxic impacts of Cd stress on carrot seed germination. The results revealed that carrot seeds treated with a concentration of 0.25 mM NaHS displayed better seed germination-associated characteristics compared to seeds treated with NaHS concentrations of 0.1 mM and 0.5 mM. Further investigation revealed a rise in the expression levels of L-cysteine desulfhydrase and D-cysteine desulfhydrase , along with enhanced activity of L-cysteine desulfhydrase and D-cysteine desulfhydrase among the NaHS treatment group, thereby leading to H 2 S accumulation. Moreover, NaHS treatment triggered the expression of pyrroline-5-carboxylate synthase and pyrroline-5-carboxylate reductase and promoted the accumulation of endogenous proline, while the contents of soluble sugar and soluble protein increased correspondingly. Interestingly, since the application of exogenous proline did not influence the accumulation of endogenous H 2 S, suggesting that H 2 S served as the upstream regulator of proline. Histochemical staining and biochemical indices revealed that NaHS treatment led to elevated antioxidant enzyme activity, alongside a suppression of superoxide anion and hydrogen peroxide generation. Furthermore, high performance liquid chromatography analysis revealed that NaHS treatment reduced Cd 2+ uptake, thereby promoting germination rate, seed vitality, and hypocotyl length of carrot seeds under Cd stress. Overall, our findings shed light on the application of NaHS to enhance carrot resistance against Cd stress and lay a foundation for exploring the regulatory role of H 2 S in plants responding to Cd stress.
研究领域:
植物学
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环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MATERIALS & DESIGN
·
2024
·
IF 7.6
Wei Chen,Xu Liu,Zhoudong Yang,Dong Hu,Xu Liu,Xi Zhu,Xuejun Fan,Guoqi Zhang,Jiajie Fan
The power semiconductor joining technology through sintering of copper nanoparticles is well-suited for die attachment in wide bandgap (WBG) semiconductors, offering high electrical, thermal, and mechanical performances. However, sintered nanocopper will be prone to degradation resulting from corrosion in sulfur-containing corrosive environments such as offshore areas. In this study, experiments, including aging test and corrosion characterization, and simulations based on density functional theory (DFT) studies were conducted to explore the corrosion behavior and mechanism of elemental sulfur (S 8 ) and hydrogen sulfide (H 2 S) on sintered nanocopper. The experimental results indicated that loose corrosion products were observed on the sintered nanocopper during the ageing process involving S 8 , and compact layered corrosion products formed during the ageing process involving H 2 S. Furthermore, similar corrosion product compositions (Cu 2 O, Cu 2 S, CuO, CuS, and potentially Cu 2 SO 4 or CuSO 4 ) were observed in both the S 8 - and H 2 S-ageing processes. However, the S 8 -ageing process exhibited more noticeable corrosion penetration. This was explained in simulations results: the unsaturated Cu sites on the oxide layer [Cu 2 O(1 1 1)] of the sintered nanocopper could adsorb both H 2 S and S 8 , while the saturated Cu sites only exhibited the potential to adsorb S 8 .
研究领域:
材料科学
·
化学
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2021
·Vol. 45
·期 7
·3535-3545
·
IF 3.591
Guanqing Zhang,Xun Kan,Yong Zheng,Yanning Cao,Shijiang Liang,Yihong Xiao,Fujian Liu,Lilong Jiang
A variety of MgAl-layered double hydrotalcites (MA-LDHs-x) with different Mg/Al molar ratios (1 : 3–5 : 1) were prepared by a novel solid-thermal approach. The obtained MA-LDH-x catalysts were characterized by various techniques. These results confirm the successful preparation of MA-LDHs-x with a high degree of crystallinity, large BET surface areas, and unique nanosheet structures with controllable hexagonal morphology. In addition, MA-LDHs-x possess tunable OH− group contents, which could be correlated with the molar ratio of Mg/Al. As a result, the MA-LDH-x catalysts exhibited better catalytic performance in carbonyl sulfide (COS) hydrolysis (COS conversion: 100% at 130 °C for MA-LDHs-3 : 1 vs. 38% at 130 °C for commercial Fe2O3) and H2S selective oxidation (H2S conversion: 100% at 150 °C for MA-LDHs-3 : 1 vs. 41% at 150 °C for commercial Fe2O3) than commercial desulfurization catalysts. Superior activities found in MA-LDH-x catalysts were attributed to their controllable 2D nanosheet structures, and the unique structural characteristics enhance the mass transfer of guest molecules. Notably, the exposed OH− base sites of MA-LDHs-x efficiently activate the acid COS and H2S, which facilitate the COS hydrolysis to H2S, and the selective H2S oxidation to elemental sulfur.
研究领域:
材料科学
·
环境催化
✓ 已验证
DOI
高影响因子
ANALYTICA CHIMICA ACTA
·
2023
·
IF 6.2
Yong Zhou,Zhihao Hu,Hongchao Zhao,Yanjie Wang,Jing Li,Cheng Zou
Hydrogen sulfide (H 2 S) emission from industrial fields and bacteria decomposing of sulfur-containing organic matter poses a significant impact on human health and atmospheric environment, thus necessitating the development of a H 2 S sensor with high sensitivity and exclusive selectivity especially at a very low dose. Chemiresistive sensors based on traditional metal oxides were readily limited by the elevated operating temperature and severe cross-sensitivity. To overcome these obstacles, we prepared two dimensional (2D) tin oxide (SnO 2 ) nanosheets decorated with thin black phosphorus (BP) as the sensing layer of MEMS H 2 S sensors. Compared with pure SnO 2 counterparts, BP-SnO 2 sensors demonstrated lower optimal working temperature (130 °C vs. 160 °C), higher response (8.1 vs. 4.6) and faster response/recovery speeds (39.8 s/47.4 s vs. 79 s/140 s) toward 5 ppm H 2 S as well as larger sensitivity (1.3/ppm vs. 0.342/ppm). In addition, favorable repeatability, long-term stability, selectivity and humidity tolerance were exhibited. Thin BP not only served as an excellent conductivity platform within the composites, but enriched the adsorption sites by constructing p-n heterojunctions and introducing more oxygen vacancy , thus separately accelerating and strengthening the gas-solid interaction. This study showcased the application superiorities of BP nanosheets in the field of gas sensing, simultaneously providing a new strategy for trace H 2 S sensing via the 2D heterojunctions.
研究领域:
材料科学
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环境科学
·
化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
VACUUM
·
2025
·
IF 3.9
Fan Du,Ying Zhu,Sisi Chen,Yuwen Deng,Fei Wang,Kai Li,Lei Shi,Xin Sun
The copper smelting industry generates significant gypsum waste, primarily composed of calcium sulfate (CaSO 4 ), which can be utilized as a sulfur source for hydrogen sulfide (H 2 S) production. This study explores an optimized process for H 2 S generation via hydrolysis of calcium sulfide (CaS), produced by vacuum carbothermal reduction of gypsum. The results show that: 1) CaSO 4 is reduced to CaS under vacuum carbothermal conditions, and subsequent hydrolysis efficiently produces H 2 S; 2) key parameters, including reduction temperature, carbon content, and recovery time, significantly influence CaS yield; 3) under optimized conditions (hydrolysis temperature, reaction time, and solid-liquid ratio), H 2 S concentrations exceeded 8000 ppm, and high-purity H 2 S gas was achieved, meeting industrial requirements for further processing. Thermodynamic analysis and characterization of reaction intermediates provided insights into the underlying mechanisms, highlighting the critical role of temperature and phase composition in optimizing H 2 S production. Kinetic analysis further clarified that the hydrolysis process follows a diffusion-controlled mechanism, with the temperature dependence of the reaction rate constant ( k ) aligning with the Arrhenius equation. This optimized approach offers a sustainable pathway for utilizing gypsum from copper smelting, contributing to sulfur resource recovery, waste reduction, and high-purity H 2 S production for industrial applications.
研究领域:
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL & PHARMACEUTICAL BULLETIN
·
2014
·Vol. 62
·期 6
·505-507
·
IF 1.375
Meiling Zhang,Mingjie Deng,Jianshe Ma,Xianqin Wang
Hydrogen sulfide (H2S) is the second leading cause of toxin-related deaths in the operational site. Its main target organs of toxic effects are the central nervous system and respiratory system. In this study, we developed a serum metabonomic method, based on gas chromatography-mass spectrometry (GC/MS), to evaluate the effect of acute poisoning by hydrogen sulfide on rats. Pattern recognition analysis, including both principal component analysis (PCA) and partial least squares-discriminate analysis (PLS-DA), revealed that acute hydrogen sulfide poisoning induced metabolic perturbations. Compared to the control group, the level of urea, glucose, glyceryl stearate in rat serum of the poisoning group increased after two hours, and the level of glucose, docosahexaenoic acid, glyceryl stearate and arachidonic acid in rat serum of the poisoning group increased after 48 h, while the l-valine, galactose, l-tyrosine levels decreased. Our results indicate that metabonomic methods based on GC/MS may be useful to elucidate acute hydrogen sulfide poisoning through the exploration of biomarkers.
研究领域:
毒理学
·
分析化学
·
医学
✓ 已验证
DOI
PubMed
高影响因子
TALANTA
·
2025
·
IF 6.1
Jiameng Pei,Lina Tang,Chenyang Kang,Fan Shi,Fengxia Liang,Yutao Li,Guo-Jun Zhang
Acupuncture therapy reduces blood pressure in hypertensive patients by stimulating acupoints located at specific anatomical positions with needles. Hydrogen sulfide (H 2 S) release and accumulation in the paraventricular nucleus (PVN) might be a pivotal step for triggering blood pressure reduction. But to date, the dynamics of H 2 S in the PVN during acupuncture treatment remain unclear. In this work, a multiple-nanomaterial-functionalized microneedle sensor is prepared for real-time monitoring of H 2 S in the PVN of rat while stimulated by electroacupuncture. Gold nanoparticles (AuNPs), molybdenum disulfide (MoS 2 ) and Ag 2 S were sequentially layered on the needle surface. The excellent electrical conductivity of AuNPs, the high carrier mobility of MoS 2 and the high catalytic performance of Ag 2 S ensure sensitive and specific detection of H 2 S in the range of 1 μM–100 μM with detection limit down to 95 nM. The microneedle sensor also demonstrates exceptional stability, remaining effective at room temperature for up to two weeks. Based on this, the microneedle sensor is used to monitor H 2 S release in vivo before and after acupuncture treatment. Our research indicates that acupuncture effectively increases H 2 S levels in the PVN of hypertensive rats, contributing to blood pressure reduction. This microneedle sensor provides a reliable method for monitoring H 2 S release in vivo, offering valuable insights into the role of H 2 S in the neurophysiology of hypertension and the mechanism of acupuncture in its treatment.
研究领域:
神经生理学
·
生物传感技术
·
中医药学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
·
2016
·
IF 2.653
Jian Pan,Junchao Xu,Youlai Zhang,Liang Wang,Caiqin Qin,Lintao Zeng,Yue Zhang
A novel fluorescent probe for H 2 S was developed based on a far-red emitting indole-BODIPY, which was decorated with morpholine and 2,4-dinitrobenzenesulfonyl (DNBS) group. This probe showed rapid response (t 1/2 = 3 min), high selectivity and sensitivity for H 2 S with significant colorimetric and fluorescence OFF–ON signals, which was triggered by cleavage of 2,4-dinitrobenzenesulfonyl group. This probe could quantitatively detect the concentrations of H 2 S ranging from 0 to 60 μM, and the detection of limit was found to be as low as 26 nM. Cell imaging results indicated that the probe could detect and visualize H 2 S in the living cells.
研究领域:
生物化学
·
医学检测
·
细胞生物学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Agricultural Science & Technology
·
2022
·
IF 0
Nimesh P. R. Ranasinghe Arachchige,Eric M. Brown,Ned B. Bowden
The slow release of hydrogen sulfide has been shown to be beneficial to plants by protecting them from environmental stressors, increasing germination, and extending the lifetime of harvested fruits. A major challenge in this field is controlling the amount and location of release of hydrogen sulfide so that it is available for use by plants at optimal amounts. This article reports a dual method to release hydrogen sulfide near the roots of plants by controlling its release using the hydrolysis of a dithiophosphate and the degradation of poly(lactic acid) [PLA]. Di(t-butanol)dithiophosphate phenylethylamine (tBDPA) was dissolved in a solution of PLA, and the solvent was allowed to evaporate. The resulting solid was crushed in a blender and separated into microparticles with two different size distributions of 250–500 or 500–2000 μm. The microparticles were characterized by powder X-ray diffraction to measure the presence of microcrystals of tBDPA within PLA, and images obtained using scanning electron microscopy with energy dispersive X-ray analysis confirmed the presence of these crystals. Microparticles of tBDPA loaded within PLA were characterized for their release of phosphorus and hydrogen sulfide, which both showed a burst release within 3 days, followed by a steady release. Radish plants grown with microparticles of PLA loaded with tBDPA had up to a 141% increase in harvest yield compared to plants grown in the presence of free tBDPA not loaded into PLA, PLA microparticles without tBDPA, and control plants grown without PLA or tBDPA. These experiments showed that loading hydrogen sulfide-releasing chemicals into PLA is a promising method to improve the effect of hydrogen sulfide on plants.
研究领域:
植物学
·
农业科学
✓ 已验证
DOI
PubMed
SENSORS AND ACTUATORS B-CHEMICAL
·
2019
·
IF 6.393
JunPing Wang,Ying Wen,FangJun Huo,CaiXia Yin
The research of endogenous hydrogen sulfide (H 2 S) biology function, pathological and pharmacological effects has been active in the field of chemists and biologists in recent years. Especially, consequent H 2 S detection mechanisms and biological applications based on fluorescence probe emerged in endlessly, competing ideas, each had its advantage. In facts, the reaction mechanism and luminescence properties play a decisive role in the biology application of H 2 S fluorescence probe. In this despite booming season, in the process of research we still skillfully conceived, in view of H 2 S with small structure being able to do successive nucleophilic substitution in the same molecules, high selective H 2 S subcellular detection was realized. Specifically, we take the cyanine (Cy7) with positive charge as a red fluorophore, through the introduction of disulfide bond and carbonate to build the specific reaction sites of H 2 S, thus avoiding the interference of other sulfur-containing substances in biological systems. After reaction with H 2 S, the Probe released red fluorophore, realizing mitochondria target H 2 S detection. Because the advantages of red fluorescence emission probe, the Probe successfully was applied imaging in mice.
研究领域:
生物化学
·
医学影像
·
分子生物学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）