Publications by authors named "Ke-An Wang"
Article Synopsis
- Methyl formate (MF) is a key chemical compound used in various applications and its electrosynthesis is gaining popularity due to its environmental benefits.
- This study introduces a new electrosynthesis method for MF using a halide-containing methanol solution, revealing a specific reaction mechanism involving aldehyde and methoxy bromide.
- The process boasts high efficiency, consistently achieving around 60% faradaic efficiency for MF production and 100% efficiency for hydrogen gas generation, making it superior to other synthesis methods.
Article Synopsis
- The electrochemical reduction of carbon dioxide is crucial for reducing greenhouse gas emissions, but improvements in efficiency are needed, especially in the anodic oxygen evolution reaction.
- A new bifunctional catalyst, CuS/TiO, has been developed that efficiently conducts both methanol oxidation and carbon dioxide reduction, enhancing the production of formate.
- This catalyst achieved a remarkable total Faradaic efficiency of approximately 170%, with 70% from cathodic carbon dioxide reduction and nearly 100% from anodic methanol oxidation.
Zn(II)-MOF derived N-doped carbons achieve marked ORR activity in alkaline and acidic media.
Chem Commun (Camb)
January 2023
Article Synopsis
- A new, efficient metal-free N-doped carbon electrocatalyst was created using a one-pot pyrolysis method from a lone Zn(II)-MOF with a combination of azolate and terephthalate ligands.
- The electrocatalyst showed impressive performance with an onset potential of 0.88 V (RHE) in a 0.1 M KOH solution and 0.79 V (RHE) in a 0.5 M HSO solution.
- This work highlights the catalyst as one of the top-performing metal-free options for the acidic oxygen reduction reaction (ORR).
Mn-N-C materials have received increasing interest in recent years because of their low Fenton reactivity and ORR activity comparable to those of their Fe-N-C and Co-N-C counterparts. In this contribution, an atomically dispersed Mn-N-C electrocatalyst with a prominent oxygen reduction performance was constructed by employing a cationic Cd-MOF as a precursor that can facilely and accurately introduce MnO anions through anion exchange. The best-performing Mn-N-C catalyst displays a 0.
View Article and Find Full Text PDFReasonable application of microbial agents can significantly improve soil environment and increase the yield and quality of vegetables. In this study, we examined the effects of different forms of microbial agents on the growth and quality of L. ssp.
View Article and Find Full Text PDFObjective: To assess the effectiveness of complementary food supplements with protein and multi-micronutrients on hemoglobin and anemia in infants and young children.
Methods: In 5 poor counties of Gansu, 984 children aged 6-12 months were enrolled and divided into two groups. In addition to the usual home-made complementary food, all the children were fed one sachet of either Formula I or Formula II supplements each day.
Objective: To investigate the effects of complementary food supplements with protein and multimicronutrients on growth of infants and yound children in poor rural area in Gansu Province, China.
Methods: In 5 poor counties of Gansu Province, 1478 children aged 4-12 months were enrolled and divided into two groups. In addition to the usual home-made complementary food, all the children were fed one sachet of either formula I or formula II per day, protein and micronutrient were supplemepted in formula I group, fomula II group got energy supplement corresponding with same energy intake as formula I, a massive dose of vitamin A was supplemented to both groups every 6 months interval.
Objective: To investigate the effects of complementary food supplements on development of infants and young children in poor rural. METHODS In 5 poor counties of Gansu Province, children aged 4 - 12 months were enrolled and divided into two groups. In addition to the usual home-made complementary food, all the children were fed one package of either formula I or formula UI per day, protein and micronutrient were supplemented in formula I group.
View Article and Find Full Text PDF[To bring programs on prevention and control of injuries within the national public health agenda].
Zhonghua Liu Xing Bing Xue Za Zhi
March 2004
[The study on relationship of body mass index and blood pressure in children and adolescents of Beijing].
Zhonghua Liu Xing Bing Xue Za Zhi
February 2004
Objective: To identify the relationship of body mass index (BMI) and blood pressure in 7 - 15 years children and adolescents of Beijing so as to provide scientific basis for early prevention of hypertension and to provide evidence for verification on the category criterion of overweight and obesity in children and adolescents of China, recommended by the Working Group on Obesity in China (WGOC) to sensitively distinguish the blood pressure in normal weight, overweight and obesity populations.
Methods: A cross-sectional survey on epidemiological characteristics of obesity with stratified cluster sampling method carried out in Beijing in April and May, 2000. 5155 students aged 6 - 15 years were selecte das research subjects.
[Study on the utilization of health services and costs of hospital-based medical care for 29 patients with HIV/AIDS in China].
Zhonghua Liu Xing Bing Xue Za Zhi
May 2003
Objective: To describe the costs of medical care and utilization of health service of patients with HIV/AIDS.
Methods: Patients with human immunodeficiency virus (HIV)/AIDS treated in the Beijing You'an Hospital were interviewed retrospectively during December 1999. Data on demographic characteristics, disease process, and utilization of health service and costs of hospital-based medical care were collected.