Heavy metal pollution in soils of smelting sites is an important environmental problem to be solved urgently. Solidification technology has become one of the mainstream technologies for heavy metal remediation in contaminated sites owing to its shorter remediation time, low cost, and high treatment efficiency. On the basis of summarizing the latest research progress on the remediation of heavy metal pollution in sites by solidification in the past 10 years, this study focused on the mechanisms of solidification technology and analyzed the advantages and disadvantages of different mechanisms (mechanism of inorganic materials, mechanism of organic materials, mechanism of mechanical ball milling, and mechanism of microbial-induced carbonate mineralization (MICP)) and their scope of application.
View Article and Find Full Text PDFThe widespread application of antiandrogen therapies has aroused a significant increase in the incidence of NEPC, a lethal form of the disease lacking efficient clinical treatments. Here we identified a cell surface receptor neurokinin-1 (NK1R) as a clinically relevant driver of treatment-related NEPC (tNEPC). NK1R expression increased in prostate cancer patients, particularly higher in metastatic prostate cancer and treatment-related NEPC, implying a relation with the progression from primary luminal adenocarcinoma toward NEPC.
View Article and Find Full Text PDFThe electrocatalytic properties of metal nanoparticles (NPs) strongly depend on their compositions and structures. Rational design of alloys and/or heterostructures provides additional approaches to modifying their surface geometric and electronic structures for optimized electrocatalytic performance. Here, a solution synthesis of freestanding intermetallic Au Bi NPs, the heterostructures of Au Bi/Bi hetero-NPs, and their promoted electrocatalytic CO reduction reaction (CO RR) performances were reported.
View Article and Find Full Text PDFElectrochemical CO reduction reaction (CORR) yielding value-added chemicals provides a sustainable approach for renewable energy storage and conversion. Bismuth-based catalysts prove to be promising candidates for converting CO and water into formate but still suffer from poor selectivity and activity and/or sluggish kinetics. Here, we report that ultrathin porous Bi nanosheets (Bi-PNS) can be prepared through a controlled solvothermal protocol.
View Article and Find Full Text PDFPhotocatalytic nitrogen fixation reaction can harvest the solar energy to convert the abundant but inert N into NH. Here, utilizing metal-organic framework (MOF) membranes as the ideal assembly of nanoreactors to disperse and confine gold nanoparticles (AuNPs), we realize the direct plasmonic photocatalytic nitrogen fixation under ambient conditions. Upon visible irradiation, the hot electrons generated on the AuNPs can be directly injected into the N molecules adsorbed on Au surfaces.
View Article and Find Full Text PDFChem Commun (Camb)
September 2019
Electrocatalytic nitrogen reduction reactions (ENRR) can produce ammonia from nitrogen and water under ambient conditions. Here, we report the morphology-dependent electro-catalytic nitrogen reduction on Ag triangular nanoplates. Boosted by potassium cations, Ag triangular nanoplates with sharp edges exhibit a high faradaic efficiency of 25% with an ammonia yield of 58.
View Article and Find Full Text PDFPhotocatalytic nitrogen fixation can produce ammonia from nitrogen and water under ambient conditions in the presence of sunlight. Here, we report that alkali metal cations (Li, Na, and K) can significantly promote nitrogen activation and plasmonic nanocrystals (Au and Ag) can sensitize photocatalysts under visible light. The ammonia yield and selectivity on Au/P25 under UV-vis irradiation could be increased from 0.
View Article and Find Full Text PDFZhongguo Zhong Xi Yi Jie He Za Zhi
January 2010
Objective: To verify the efficacy of Jianpi Tiaogan Wenshen Recipe (JTWR) in treating diarrhea-predominant irritable bowel syndrome (IBS-D) and to analyze its therapeutic mechanism through observing the effect of JTWR on clinical symptoms and rectal sensibility in patients.
Methods: With a prospective, randomized controlled trial adopted, 80 patients with IBS-D were assigned randomly equally and to two groups. The treatment group was treated with JTWR, and the control group was treated with pinaverium bromide tablet (PVB), all for four weeks.
Objective: To evaluate the efficacy and safety of Changjishu soft elastic capsule, a new Chinese herbal medicine for smoothing liver, invigorating spleen and regulating qi activity, on diarrhea-predominant irritable bowel syndrome (D-IBS) patients with liver-qi stagnation and spleen deficiency syndrome.
Methods: A randomized, double-blinded, and positive control method was adopted. One hundred and four cases of D-IBS conforming to the inclusive criteria were randomly divided into treatment group (78 cases) and control group (26 cases).
When 1.00 mol l(-1) I(-) is used as ion perturber, rhodamine 6G (Rh 6G) can emit strong and stable room temperature phosphorescence (RTP) on filter paper substrate in KHC(8)H(4)O(4)-HCl buffer solution (pH = 3.50), heated at 70 degrees C for 10 min.
View Article and Find Full Text PDFSpectrochim Acta A Mol Biomol Spectrosc
February 2007
Dissoluble manganese supramolecule containing rhodamine 6G luminescent particles (M2) are synthesized, based on dissoluble manganese supramolecule (M1) doping rhodamine 6G (R.6G), by crystalline method. The particle diameters of M1 and M2 determined by ETM are both of micron degree.
View Article and Find Full Text PDF