N-doped graphene quantum dot-decorated N-TiO2/P-doped porous hollow g-C_(3)N_(4) nanotube composite photocatalysts for antibiotic photodegradation and H2 production

Exclusive responsiveness to ultraviolet light (~3.2 eV) and high photogenerated charge recombination rate are the two primary drawbacks of pure TiO_(2). We combined N-doped graphene quantum dots (N-GQDs), morphology regulation, and heterojunction construction strategies to synthesize N-GQD/N-doped TiO_(2)/P-doped porous hollow g-C_(3)N_(4) nanotube (PCN) composite photocatalysts (denoted as G-TPCN). The optimal sample (G-TPCN doped with 0.1wt% N-GQD, denoted as 0.1% G-TPCN) exhibits significantly enhanced photoabsorption, which is attributed to the change in bandgap caused by elemental doping (P and N), the improved light-harvesting resulting from the tube structure, and the upconversion effect of N-GQDs. In addition, the internal charge separation and transfer capability of0.1% G-TPCN are dramatically boosted, and its carrier concentration is 3.7, 2.3, and 1.9 times that of N-TiO_(2), PCN, and N-TiO_(2)/PCN(TPCN-1), respectively. This phenomenon is attributed to the formation of Z-scheme heterojunction between N-TiO_(2) and PCNs, the excellent electron conduction ability of N-GQDs, and the short transfer distance caused by the porous nanotube structure. Compared with those of N-TiO_(2), PCNs, and TPCN-1, the H2 production activity of 0.1%G-TPCN under visible light is enhanced by 12.4, 2.3, and 1.4times, respectively, and its ciprofloxacin (CIP) degradation rate is increased by 7.9, 5.7, and 2.9 times, respectively. The optimized performance benefits from excellent photoresponsiveness and improved carrier separation and migration efficiencies. Finally, the photocatalytic mechanism of 0.1% G-TPCN and five possible degradation pathways of CIP are proposed. This study clarifies the mechanism of multiple modification strategies to synergistically improve the photocatalytic performance of 0.1% G-TPCN and provides a potential strategy for rationally designing novel photocatalysts for environmental remediation and solar energy conversion.

Template-free synthesis of core-shell Fe_(3)O_(4)@MoS_(2)@mesoporous TiO_(2) magnetic photocatalyst for wastewater treatment

TiO_(2)is the dominant and most widely researched photocatalyst for environmental remediation,however,the drawbacks,such as only responding to UV light(<5%of sunlight),low charge separation efficiency,and difficulties in recycling,have severely hindered its practical application.Herein,we synthesized magnetically separable Fe_(3)O_(4)@MoS_(2)@mesoporous TiO_(2)(FMmT)photocatalysts via a simple,green,and template-free solvothermal method combined with ultrasonic hydrolysis.It is found that FMmT possesses a high specific surface area(55.09 m2·g−1),enhanced visible-light responsiveness(~521 nm),and remarkable photogenerated charge separation efficiency.In addition,the photocatalytic degradation efficiencies of FMmT for methylene blue(MB),rhodamine B(RhB),and tetracycline(TC)are 99.4%,98.5%,and 89.3%within 300 min,respectively.The corresponding degradation rates are 4.5,4.3,and 3.1 times higher than those of pure TiO_(2)separately.Owing to the high saturation magnetization(43.1 A·m^(2)·kg^(−1)),FMmT can achieve effective recycling with an applied magnetic field.The improved photocatalytic activity is closely related to the effective transport of photogenerated electrons by the active interlayer MoS_(2) and the electron–hole separation caused by the MoS_(2)@TiO_(2)heterojunction.Meanwhile,the excellent light-harvesting ability and abundant reactive sites of the mesoporous TiO_(2)shell further boost the photocatalytic efficiency of FMmT.This work provides a new approach and some experimental basis for the design and performance improvement of magnetic photocatalysts by innovatively incorporating MoS2 as the active interlayer and integrating it with a mesoporous shell.

A Study on Translation of Etiquette Culture with Reference to Two English Versions of Hong Lou Meng

As a state of ceremonies,the etiquette culture,which occupies a significant position in the Chinese culture,has gone deep in the soul of every Chinese person,distinguishing the Chinese from other nationalities.Hong Lou Meng(HLM)was written at the end of the feudal era,depicting an extended family which experienced rise and fall,happiness and sorrow as kinsmen of the emperor.The historical and social background of HLM determines that the novel is abundant in etiquette,with elaborate recording of Chinese tradition,which enriched the cultural connotation of HLM and carried forward the Chinese culture.This paper takes HLM as cases to study the translation of etiquette culture.

On the Value Transmission of Feminism from The Marvelous Mrs.Maisel

“All men are created equal.”This sentence is the second paragraph of the American Declaration ofIndependence,and it is what human beings should always strive for.But from the current point of view,there arestill too much discrimination against women in socicty.For now,because of the advantages of the Internet,American TV series has become a major medium for cultural output,and the value transmission in American Tvseries have profoundly affected us.The background of The Marvelous Mrs.Maisel studied in this thesis took place inthe 1950s,the era when ferminism was just emerging.The main character Mrs.Maisel gradually changed from“theo Other”to“the Subject”and eventually got freedom.Only when women do not depend on men and are not affiatedto men,both physically and mentally,and seek for the same right as men do,can they have a complete independentpersonality.This introduces the definition of feminism and analyzes the reasons why Mrs.Maiscl was treatedunequally in society from religious,social and family perspectives.The paper especially focuses on the valuetransmission of feminism,in which the awakening of self-awareness,gender and social consciousness indicate theawakening of Mrs.Maisel's feminist consciousness and also social progress as well.

Moral Infiltration in Junior High School English Class Based on Bandura's Social Learning Theory

In the process of education and teaching,teachers should not only impart systematic scientificknowledge to students,cultivating their ability to solve problems,but also seize the opportunity to permeate moraleducation among students.Junior high school students are in the stage of puberty,and great changes have taken placein their physiology and psychology.Teachers should serve as a guide on the aspect of their moral cognition,moraljudgment and moral behavior.English,as an important subject,plays an important role in middle school's education.Bandura's Social Learning Theory emphasizes the importance of self-efficacy and observation in students’learning.Itis a"good dose"for moral education in junior high school English class.Not only will it help teachers to improve thequality of English class teaching,but also improve students’moral qualities and overall development.

After Forty Years of Reform and Opening up:A Multi-perspective Analysis of the Innovation and Development of Ideological and Political Education

In the past 40 years of reform and opening up,the political,economic and cultural exchanges and cooperation between China and other countries have been increasing.In particular,with the opening of the doors to the outside world,the intermingling and collision of various cultures and trends from the East and the West have affected the practice and development process of ideological and political education to a certain extent.With the continu­ous penetration of network technology,the ideological and political theoret­ical system under the leadership of the Party has been constantly innovated and improved.Although it has gone through the course of cancellation,restoration,development and then integration and deepening,it has also pointed out a series of new diversified development paths for ideological and political education.Therefore,against such a background,it is impor­tant to deeply understand the distinctive features of ideological and political education in the context of pluralism.Adhering to the principle of keeping pace with the times and the people-oriented education policy and exploring new paths,methods and means of ideological and political education in the context of pluralism are not only in line with the trend of development of the times,but also continue to promote the reform and development of ide­ological and political theory in the new era.

A Foreigner,but not an Outsider

Dirk Werner Hartmann,whose Chinese name is Zhang Ke,came to China in 1987 and studied at Wuhan University.He obtained double degrees in the Chinese Department of Wuhan University and Henan University.In 1996,he graduated from Trier University,the hometown of Marx,Germany,majoring in Chinese modem and classical linguistics and earned a Master*s degree.Zhang Ke is proficient in German,English,French,and Chinese.In 2011,he came to Xi'an Fanyi University to teach courses such as oral German language and literature,Germanic language and literature writing,computer English,E-commerce English,German DSH and IELTS training.In addition,Zhang Ke also served as the judge of CCTV Star of Outlook Talent English competition and the judge of German singing,speech and dubbing competition of Shaanxi universities.In 2017,he began to participate in China,s poverty alleviation project.The teachers in poor areas trained by him have won provincial and municipal teaching awards for many times,and the students,foreign language scores have exceeded the historical records of districts and counties for many times.In 2018,as an expert in the translation team,he participated in the English translation of Xi’an bus stop names.

Christabel LaMotte--a Feminist Martyr

In A.S. Byatt’s Possession, Christabel LaMotte is an independent new woman who has a genius for poetry. In this patriarchal society, LaMotte has to make great sacrifice for her cause and her feminist faith, including giving up the most beloved ones in her life. From a feminist viewpoint, LaMotte on the surface is an untraditional literary woman and a feminist fighter. Yet, she lives in great pain and agony all through her life and a martyr of her feminist faith.