Interface engineering of photocatalysts is an effective way to enhance their photocatalytic activity.In this work,the MOF-on-MOF strategy was used to construct the ZIF-9(Co)/Cu_(3)BTC_(2) photocatalyst in situ.Moreove...Interface engineering of photocatalysts is an effective way to enhance their photocatalytic activity.In this work,the MOF-on-MOF strategy was used to construct the ZIF-9(Co)/Cu_(3)BTC_(2) photocatalyst in situ.Moreover,graph-diyne,possessing an inherent capability to facilitate rapid electron transfer at the interface,has been introduced into the ZIF-9(Co)/Cu_(3)BTC_(2) interface to regulate the interfacial carrier migration.The photogenerated carrier transfer capability has been significantly enhanced by the interfacial synergy,while retaining the original active sites and high specific surface area.The exceptional efficiency performance of the composite catalyst under identical conditions could be attributed to the following two key factors:(i)The interfacial S-scheme hetero-junction in ZIF-9(Co)/Cu_(3)BTC_(2) provides the composite catalyst with strong reduction activity,facilitating the involvement of additional electrons in the reduction reaction through bended bands and an internal electric field.(ii)Carrier dynamics analysis shows that graphdiyne,as an electron transport layer,accelerates the charge migration rate at the S-scheme heterojunction interface through the electron relay effect.The incorporation of graphdiyne greatly improves the catalytic activity of MOFs and also demonstrates the great potential of graph-diyne in photocatalysis.This work provides a feasible idea for the interface engineering design of graphdiyne in photocatalysts.展开更多
Background:There are no clear guidelines for the diagnosis and treatment of malignant retrorectal tumours.The purpose of this study was to increase preoperative diagnostic knowledge and to describe the outcomes of tre...Background:There are no clear guidelines for the diagnosis and treatment of malignant retrorectal tumours.The purpose of this study was to increase preoperative diagnostic knowledge and to describe the outcomes of treatment for these patients.Methods:This retrospective study was conducted on patients who underwent complete retrorectal tumour resection between May 2006 and July 2018,and had confirmed post-operative pathology reports.Demographic and clinical data(including imaging,perioperative,pathological,and prognostic data)were collected and analysed.Results:Malignant lesions were identified in 15(9[60%],female)patients.The median age of the patients was 59 years(range,34–72 years).Primary malignant tumours were identified in seven patients with solid tumours,in which gastrointestinal stromal tumours accounted for 71.4%(five of seven)and the remainder were chordoma or mucinous adenocarcinoma.Malignant transformation of cysts occurred in another eight patients with heterogeneous tumours,while histopathological features were present in 75%(six of eight)of patients with mucinous adenocarcinoma,and the remainder were squamouscell carcinoma or neuroendocrine tumour(Grade 2).The malignant characteristics of the solid portions observed using magnetic resonance imaging(MRI)were as follows:the cyst wall of the tumour was irregularly thickened;the surface was convex or lobed;the solid tumour had no capsule,or the capsule was destroyed;and the surface had a gyrus-like morphology.At a median follow-up time of 52 months(range,13–100 months),the overall recurrence-free survival rate was 40.0%and the survival rate was 46.7%.Conclusion:Some MRI features can be used to distinguish malignant retrorectal tumours from benign retrorectal tumours.The survival rate of patients with malignant retrorectal tumours is poor.展开更多
基金supported by the National Natural Science Foundation of China (12032004, 11872114 and 11502150)the Natural Science Foundation of Hebei Province of China (A2016210060)+1 种基金the GHfund B (202202026154)Key Project of Natural Science Foundation of Hebei Province (Basic Discipline Research) (A2023210064)。
基金supprted by the“Fundamental Research Funds for the Central Universities”,North Minzu University(2023XYZHG01)Ningxia low-grade resource high value utilization and environmental chemical integration technology innovation team projectInnovative team for transforming waste cooking oil into clean energy and high value-added chemicals,China
文摘Interface engineering of photocatalysts is an effective way to enhance their photocatalytic activity.In this work,the MOF-on-MOF strategy was used to construct the ZIF-9(Co)/Cu_(3)BTC_(2) photocatalyst in situ.Moreover,graph-diyne,possessing an inherent capability to facilitate rapid electron transfer at the interface,has been introduced into the ZIF-9(Co)/Cu_(3)BTC_(2) interface to regulate the interfacial carrier migration.The photogenerated carrier transfer capability has been significantly enhanced by the interfacial synergy,while retaining the original active sites and high specific surface area.The exceptional efficiency performance of the composite catalyst under identical conditions could be attributed to the following two key factors:(i)The interfacial S-scheme hetero-junction in ZIF-9(Co)/Cu_(3)BTC_(2) provides the composite catalyst with strong reduction activity,facilitating the involvement of additional electrons in the reduction reaction through bended bands and an internal electric field.(ii)Carrier dynamics analysis shows that graphdiyne,as an electron transport layer,accelerates the charge migration rate at the S-scheme heterojunction interface through the electron relay effect.The incorporation of graphdiyne greatly improves the catalytic activity of MOFs and also demonstrates the great potential of graph-diyne in photocatalysis.This work provides a feasible idea for the interface engineering design of graphdiyne in photocatalysts.
基金supported by the developing Program for High-level Academic Talent in Jiangsu Hospital of TCM(Grant No.y2021rc27)PhaseШProject Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions(Grant No.ZYX03KF034).
文摘Background:There are no clear guidelines for the diagnosis and treatment of malignant retrorectal tumours.The purpose of this study was to increase preoperative diagnostic knowledge and to describe the outcomes of treatment for these patients.Methods:This retrospective study was conducted on patients who underwent complete retrorectal tumour resection between May 2006 and July 2018,and had confirmed post-operative pathology reports.Demographic and clinical data(including imaging,perioperative,pathological,and prognostic data)were collected and analysed.Results:Malignant lesions were identified in 15(9[60%],female)patients.The median age of the patients was 59 years(range,34–72 years).Primary malignant tumours were identified in seven patients with solid tumours,in which gastrointestinal stromal tumours accounted for 71.4%(five of seven)and the remainder were chordoma or mucinous adenocarcinoma.Malignant transformation of cysts occurred in another eight patients with heterogeneous tumours,while histopathological features were present in 75%(six of eight)of patients with mucinous adenocarcinoma,and the remainder were squamouscell carcinoma or neuroendocrine tumour(Grade 2).The malignant characteristics of the solid portions observed using magnetic resonance imaging(MRI)were as follows:the cyst wall of the tumour was irregularly thickened;the surface was convex or lobed;the solid tumour had no capsule,or the capsule was destroyed;and the surface had a gyrus-like morphology.At a median follow-up time of 52 months(range,13–100 months),the overall recurrence-free survival rate was 40.0%and the survival rate was 46.7%.Conclusion:Some MRI features can be used to distinguish malignant retrorectal tumours from benign retrorectal tumours.The survival rate of patients with malignant retrorectal tumours is poor.
